JP7428735B2 - tunnel boring machine - Google Patents

Description

The present invention relates to a tunnel excavator equipped with an earth and sand sampling device that samples excavated earth and sand taken into a chamber from a cutter head.

A typical tunnel excavator excavates a tunnel by rotating a cutter head and using a plurality of cutter bits attached to the front of the cutter head to excavate the ground in front and form a face. The excavated earth and sand generated by excavating the earth (cutting the face) passes through the earth and sand passage part, which is an opening formed in the cutter head, and is taken into a chamber on the back side of the cutter head. Thereafter, the excavated earth and sand in the chamber is transported and discharged toward the rear in the tunnel extending direction by an earth and sand discharge device such as a screw conveyor provided in the tunnel excavator.

Here, when the tunnel excavator is a mud pressure type shield excavator, the front surface of the cutter head is mainly composed of a plurality of cutter spokes extending radially from the center, and most of the front surface of the cutter head is an open cross section. In this case, the gap between cutter spokes that are adjacent to each other in the circumferential direction becomes an earth and sand passage section, and the excavated earth and sand is taken into the chamber through the gap (earth and sand passage section).

On the other hand, when the tunnel excavator is a mud shield excavator, the ground (face) is held by mud water pressure, but a cutter face plate is generally used to prevent the ground (face) from collapsing. Therefore, the front surface of the cutter head is composed of a plurality of cutter spokes and a cutter face plate that closes the gap between the circumferentially adjacent cutter spokes. In this case, a gap between the cutter spoke and the cutter face plate, a gap between adjacent cutter face plates, or multiple slits formed as through holes in the cutter face plate becomes the dirt passage part, and the dirt passes from the slit etc. into the chamber. Excavated soil is taken in.

In recent years, it has become more important than ever to minimize the impact on the ground during shield construction using tunnel excavators. To solve this problem, there is a need for a technology that can check whether the properties of the excavated soil taken into the chamber from the cutter head are appropriate. For this reason, a soil sampling device is used to sample the excavated soil in the chamber from the inside of the excavator main body (the rear side of the bulkhead). For example, Patent Document 1 describes that an earth and sand sampling device equipped with a screw blade for taking out earth and sand is attached to a partition wall, and excavated earth and sand in a chamber is sampled by rotation of the screw blade.

Japanese Patent Application Publication No. 2004-68250

However, the conventional soil sampling device described in Patent Document 1 has a structure in which the excavated soil in the chamber is taken into the inside of the machine using a rotating screw blade, so the properties of the excavated soil change due to stirring. However, there was a problem in that the properties of the excavated soil could not be accurately determined. In addition, in the conventional sediment sampling device, since the opening provided in the bulkhead is used as the intake port for the excavated soil, it is possible to collect excavated soil only near the bulkhead in the chamber, and it is not possible to collect excavated soil in the vicinity of the bulkhead in the chamber. There was also the problem that excavated soil could not be collected.

In view of these problems, the present invention aims to provide a tunnel excavator that is capable of sampling excavated soil at a position separated from the partition wall within a chamber without changing the properties of the excavated soil. The purpose is

In order to solve the above problems, the tunnel excavator of the present invention has the following features:
A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism and the sliding mechanism are configured with a common movement mechanism,
The common movement mechanism is
a power applying device that applies power to the piston to move the piston in the axial direction of the cylindrical member inside the cylindrical member;
a locking member for moving the cylindrical member in the axial direction of the cylindrical member together with the piston;
has
The common moving mechanism is configured to move the cylindrical member together with the piston in the axial direction by applying the power from the power applying device to the piston that is locked by the locking member. This serves as the insertion/extraction mechanism for the cylindrical member.

In the sediment sampling device, the opening of the partition wall or the moving passage is opened by the on-off valve, and the piston is moved by the sliding mechanism with the cylindrical member inserted into the chamber by the insertion/extraction mechanism. The earth and sand in the chamber may be taken into the interior of the cylindrical member by sliding the cylindrical member axially rearward.

The locking member is
a front stopper provided on the front end side of the cylindrical member and capable of locking the piston slid on the front end side of the cylindrical member;
a rear stopper provided on the rear end side of the cylindrical member and capable of locking the piston slid on the rear end side of the cylindrical member;
may also be included.

The power imparting device includes a jack that is extendable and retractable in the axial direction of the cylindrical member,
The jack may be connected to the piston through a rear end opening of the cylindrical member, and may not be connected to the cylindrical member.

The sediment sampling device includes:
a casing attached to the partition wall and accommodating the cylindrical member;
The internal space of the casing communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
The power applying device may include a pneumatic device capable of supplying and suctioning air to an internal space of the casing on the rear side of the cylindrical member.

The sediment sampling device includes:
further comprising a casing attached to the partition wall and accommodating the cylindrical member,
The internal space of the casing communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
The power imparting device includes:
a pneumatic device capable of supplying air to an internal space of the casing on the rear side of the cylindrical member;
a wire connected to the piston through a rear end opening of the cylindrical member;
a winding device that winds up the wire;
may also be included.

In order to solve the above problems, the tunnel excavator of the present invention has the following features:
A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism includes a jack that is extendable and retractable in the axial direction of the cylindrical member,
The jack is connected to the cylindrical member,
The rear end side of the cylindrical member is closed,
The sliding mechanism may include a pneumatic device capable of supplying and suctioning air to an internal space of the cylindrical member on the rear side of the piston.

In order to solve the above problems, the tunnel excavator of the present invention has the following features:
A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the device into the body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism includes a first jack that is extendable and retractable in the axial direction of the cylindrical member,
The sliding mechanism includes a second jack that is extendable and retractable in the axial direction of the cylindrical member,
The telescoping rod of the second jack is connected to the piston and not connected to the cylindrical member,
The main body of the second jack is connected to the cylindrical member,
The telescopic rod of the first jack may be connected to the main body of the second jack or the cylindrical member.

In order to solve the above problems, the tunnel excavator of the present invention has the following features:
A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the device into the body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The sediment sampling device is configured to perform the insertion and removal in a state in which the opening of the partition wall or the movement passage is opened by the on-off valve, and the piston is advanced axially forward within the cylindrical member by the sliding mechanism. By moving the cylindrical member forward relative to the piston by a mechanism and inserting the cylindrical member into the chamber, dirt in the chamber is taken into the cylindrical member,
further comprising a casing attached to the partition wall and accommodating the cylindrical member,
The internal space of the casing is divided into a front internal space in which the cylindrical member is arranged and a rear internal space,
The front internal space communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
A movable member is disposed in the rear internal space so as to be slidable in the axial direction in the rear internal space, and the movable member is connected to the piston via a shaft member,
The insertion/extraction mechanism and the sliding mechanism are
a first hydraulic mechanism that moves the piston in the axial direction of the cylindrical member via the movable member and the shaft member by supplying hydraulic pressure to the rear internal space of the casing;
a second hydraulic mechanism that moves the cylindrical member forward in the axial direction by supplying hydraulic pressure to a space on the rear side of the cylindrical member in the front internal space of the casing;
It may also be made up of:

According to the present invention, it is possible to sample excavated soil at a position separated from the partition wall within the chamber without changing the properties of the excavated soil.

BRIEF DESCRIPTION OF THE DRAWINGS It is a cross-sectional schematic diagram which shows the whole structure of the tunnel excavation machine based on embodiment of this invention. It is a sectional view showing operation of the sediment sampling device concerning a 1st embodiment of the present invention. It is a sectional view showing operation of the sediment sampling device concerning a 1st embodiment of the present invention. It is a sectional view showing operation of the sediment sampling device concerning a 1st embodiment of the present invention. It is a sectional view showing operation of the sediment sampling device concerning a 1st embodiment of the present invention. FIG. 2 is an enlarged sectional view showing the peripheral configuration of a cylindrical member of the sediment sampling device according to the first embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 2nd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 2nd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 2nd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 2nd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 3rd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 3rd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 3rd embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 3rd embodiment of the present invention. FIG. 7 is a schematic diagram showing the periphery of a cylindrical member and the configuration of a pneumatic device of a sediment sampling device according to a third embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 4th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 4th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 4th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 4th embodiment of the present invention. FIG. 7 is a schematic diagram showing the periphery of a cylindrical member and the configuration of a pneumatic device of a sediment sampling device according to a fourth embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 5th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 5th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 5th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 5th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 6th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 6th embodiment of the present invention. It is a sectional view showing operation of a sediment sampling device concerning a 6th embodiment of the present invention. It is a sectional view showing the composition of the earth and sand sampling device concerning the example of a modification of the 6th embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in these embodiments are merely illustrative to facilitate understanding of the invention, and do not limit the invention unless otherwise specified. In this specification and the drawings, elements with substantially the same functions and configurations are given the same reference numerals to omit redundant explanation, and elements not directly related to the present invention are omitted from illustration. do.

<1. Overall configuration of tunnel excavator>
The configuration of a tunnel excavator 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a schematic cross-sectional view showing the overall configuration of a tunnel excavator 1. As shown in FIG. Note that the arrow F in FIG. 1 indicates the forward direction (that is, the traveling direction) of the tunnel excavating machine 1, and the arrow B indicates the rear direction of the tunnel excavating machine 1. Arrow F in FIG. 1 points toward the face, and arrow B points toward the mine entrance.

The tunnel excavator 1 is an earth pressure type (including mud pressure type) shield excavator that can excavate the ground. As shown in FIG. 1, the tunnel excavator 1 includes an excavator main body 10. The excavator main body 10 has a cylindrical shape (for example, a cylindrical shape or a rectangular cylindrical shape). The axial direction of the excavator main body 10 coincides with the longitudinal direction of the tunnel excavator 1.

Below, the axial direction of the tunnel excavator 1 (that is, the axial direction of the excavator main body 10) is also simply referred to as the axial direction, and the radial direction of the tunnel excavator 1 (that is, the radial direction of the excavator main body 10) is simply referred to as the radial direction. Also, the circumferential direction of the tunnel excavator 1 (that is, the circumferential direction of the excavator main body 10) is also simply called the circumferential direction.

A cutter head 11 is provided at the front end of the excavator body 10. The cutter head 11 is a substantially disc-shaped rotating body. A front end of a cutter rotation shaft 12 is fitted into the center of the cutter head 11, and the cutter head 11 is rotatably supported around the cutter rotation shaft 12.

The cutter head 11 includes an outer ring 11a, an inner ring 11b, cutter spokes 11c, a fishtail cutter 11d, a cutter bit 11e, and the like. Among these, the outer ring 11a forms the outer circumference of the cutter head 11, and the inner ring 11b is arranged radially inward than the outer ring 11a. Further, the plurality of cutter spokes 11c are arranged radially around the cutter rotation shaft 12 on the front surface of the cutter head 11. A fishtail cutter 11d is attached to the center of the front surface of the cutter head 11. Further, a large number of cutter bits 11e are attached to the front surface of the cutter spoke 11c. Note that the fishtail cutter 11d and the cutter bit 11e may or may not be detachable.

The cutter head 11 has a plurality of openings formed between the outer ring 11a, the inner ring 11b, and the cutter spokes 11c. The opening functions as an excavated dirt inlet for taking in excavated dirt generated when the ground (face) is excavated by the cutter head 11 into the excavator main body 10 (into a chamber 17 described later).

A partition wall 13 is arranged behind the cutter head 11 in the excavator main body 10. The partition wall 13 is a plate-shaped (for example, disk-shaped) wall body arranged perpendicularly to the axial direction (tunnel extension direction), and the outer peripheral edge of the partition wall 13 is aligned with the inner peripheral surface 10a of the excavator main body 10. It is attached. The cutter head 11 and the partition wall 13 are arranged at a predetermined interval in the axial direction (the direction in which the tunnel extends). Various equipment of the tunnel excavator 1 is arranged on the rear side of the partition wall 13, and the partition wall 13 isolates the equipment from excavated earth and sand generated at the face. A discharge port 13a, which is an opening for discharging excavated earth and sand, is formed in the lower part of the partition wall 13.

A cutter rotating shaft 12 is rotatably supported at the center of the partition wall 13 . Further, an annular rotating ring 14 is supported on the partition wall 13 so as to be rotatable about the cutter rotating shaft 12 . At the front of the rotating ring 14, a plurality of connecting beams 15 are provided at predetermined intervals in the circumferential direction. A plurality of connecting beams 15 connect the cutter head 11 and the rotating ring 14 . The front end of the connecting beam 15 is connected to a connecting portion between the inner ring 11b of the cutter head 11 and the cutter spokes 11c. On the other hand, a ring gear 14a is provided at the rear of the rotating ring 14. Note that the ring gear 14a may be of an external tooth type or an internal tooth type. Furthermore, a cutter rotation motor 16 is provided behind the partition wall 13. A drive gear 16a of this cutter rotation motor 16 meshes with a ring gear 14a of the rotary ring 14.

By driving the cutter rotation motor 16, the rotation of the drive gear 16a is transmitted from the ring gear 14a to the rotating ring 14 and the connecting beam 15. Thereby, the cutter head 11 can be rotated around the cutter rotation shaft 12. As a result, the front surface of the rotating cutter head 11 can be pressed against the ground (face) using a shield jack 19, which will be described later, and the ground can be excavated.

A chamber 17 is defined between the cutter head 11 and the partition wall 13. The chamber 17 is a space (for example, a substantially cylindrical space) defined by the rear surface of the cutter head 11, the front surface of the partition wall 13, and the inner peripheral surface 10a of the excavator main body 10. Excavated earth and sand generated as the cutter head 11 excavates the ground is taken into the chamber 17 through the opening (excavated earth inlet) formed through the cutter head 11 . The chamber 17 functions as a space (chamber) for temporarily storing excavated soil. The excavated earth and sand taken into the chamber 17 is discharged from the chamber 17 into the screw conveyor 18 through the discharge port 13a located at the lower part of the partition wall 13.

The screw conveyor 18 is provided on the rear side of the partition wall 13 inside the excavator main body 10. The screw conveyor 18 is disposed within the excavator main body 10 so as to be inclined upward toward the rear side. An opening at the front end of the screw conveyor 18 is connected to an outlet 13a of the partition wall 13. Thereby, the internal space of the screw conveyor 18 communicates with the chamber 17 through the discharge port 13a of the partition wall 13. The screw conveyor 18 is provided with a screw blade 18a, which is a screw-shaped rotating body having spiral blades. By rotationally driving the screw blades 18a, excavated earth and sand stored in the chamber 17 can be taken into the screw conveyor 18, transported toward the rear of the excavator main body 10, and discharged.

Further, an erector device (not shown) is provided on the rear side of the partition wall 13 of the excavator main body 10. The erector device is provided so as to be movable in the axial direction, radial direction, and circumferential direction of the excavator main body 10 (that is, the tunnel extending direction, the tunnel radial direction, and the tunnel circumferential direction). The erector device is capable of gripping segments S, which are lining members, and assembles the gripped segments S along the inner wall surface (pit wall) of the tunnel T.

The segment S is a ring piece having a curved shape along the inner wall surface of the excavated tunnel T. By driving the erector device, a plurality of segments S can be assembled into a ring shape along the circumferential direction. As a result, the inner wall surface of the tunnel T is lined with a plurality of segments S, thereby preventing the inner wall surface from collapsing.

Further, inside the excavator main body 10, a plurality of shield jacks 19 are provided at intervals from each other in the circumferential direction. Each shield jack 19 is provided along the inner peripheral surface 10a of the excavator main body 10 so as to extend in the axial direction of the excavator main body 10. The shield jack 19 is, for example, a hydraulic jack, but may be any other type of jack, actuator, etc. as long as it can generate the thrust of the tunnel excavator 1. A retractable drive rod 19a is provided at the rear end of the shield jack 19. The tip of the drive rod 19a faces the front end surface of the existing segment S. By extending the drive rod 19a of the shield jack 19 rearward and pressing the existing segment S, a propulsive reaction force (that is, thrust) can be applied to the excavator main body 10. That is, the excavator main body 10 can move forward by the thrust generated when the shield jack 19 presses the existing segment S.

As described above, in the tunnel excavator 1, excavated earth and sand generated as the ground is excavated is taken into the chamber 17 from the cutter head 11. The excavated earth and sand taken into the chamber 17 is moved into the chamber by stirring blades (not shown) that rotate integrally with the cutter head 11 and fixed blades (not shown) fixed to the partition wall 13. It is stirred in 17. In the tunnel excavator 1 according to the present embodiment, the excavated earth and sand in the chamber 17 are sampled for the purpose of confirming whether the properties of the excavated earth taken into the chamber 17 from the cutter head 11 are appropriate. A sampling device is provided. The sediment sampling device according to this embodiment will be described below.

<2. Overview of sediment sampling equipment>
Next, with reference to FIGS. 2 to 11, an outline of the earth and sand sampling device 100 provided on the partition wall 13 of the tunnel excavating machine 1 according to the present embodiment will be described.

The soil sampling device 100 according to the present embodiment is a device for sampling excavated soil in the chamber 17 from the inside of the excavator main body 10 (the rear side of the partition wall 13). By sampling the actual excavated earth and sand in the chamber 17 using the earth and sand sampling device 100, it is possible to confirm the properties of the earth and sand excavated by the cutter head 11 in the chamber 17. In detail, by sampling the actual excavated earth and sand in the chamber 17, it is possible to determine whether the earth and sand excavated (scraped away) at the face using the cutter bit 11e or roller cutter is properly taken into the chamber 17. It is possible to check whether the excavated soil and additives are properly mixed and whether the excavated soil is appropriately plastically fluidized.

Note that it is possible to check whether the excavated soil is properly taken into the chamber 17 by checking the specific gravity, water content, presence or absence of voids (bubble content), etc. of the sampled excavated soil. Furthermore, by checking the slump value and additive content of the sampled excavated soil, it is possible to check whether the excavated soil is appropriately plastically fluidized.

<2.1. Problems with conventional sediment sampling equipment>
By the way, the conventional soil sampling device described in Patent Document 1 has a structure in which the excavated soil in the chamber is taken into the inside of the device through an opening formed in a partition wall using a rotating screw blade. However, this conventional structure has a problem in that the mechanical structure of the soil sampling device is complicated. In addition, there is a problem in that the excavated soil in the chamber is kneaded during the process of taking in the excavated soil by the screw blade, and the properties of the excavated soil may change. Furthermore, conventional soil sampling devices using screw blades have a weak sealing structure, so there is a risk of excavated soil spewing out, and although they can be applied to earth pressure type shield machines, they are not applicable or applicable to muddy water type shield machines. The problem was that it was difficult. In addition, since the structure is such that the excavated soil in the chamber is taken in through the opening formed in the bulkhead, it is possible to sample only the excavated soil near the bulkhead, and it is not possible to sample the excavated soil at a position further away from the bulkhead. There was also the problem of not being able to do it.

Therefore, in order to solve the problems of the conventional sediment sampling device, the sediment sampling device 100 according to the present embodiment can be realized with a simple mechanical structure, and the sampling of the excavated sediment in the chamber 17 can be performed by changing the properties of the excavated sediment. The purpose of this invention is to enable sampling of excavated soil from a desired sampling position within the chamber 17 (including a position spaced forward from the bulkhead 13). .

<2.2. Schematic configuration of sediment sampling device>
Next, a schematic configuration of the sediment sampling device 100 according to this embodiment will be described.

First, the installation position of the sediment sampling device 100 will be explained. As shown in FIGS. 2 to 11, the sediment sampling device 100 according to the present embodiment is installed inside the excavator main body 10 on the rear side of the bulkhead 13 (hereinafter referred to as "inside the machine"), and inside the machine body. It is attached to the partition wall 13 from. The earth and sand sampling device 100 is attached near an opening 13b formed through the partition wall 13, and samples excavated earth and sand in the chamber 17 through the opening 13b.

The formation position of the opening 13b in the partition wall 13 and the mounting position of the sediment sampling device 100 with respect to the partition wall 13 are adjusted according to the desired position in the chamber 17 for sampling the excavated soil (hereinafter referred to as "desired sampling position"). be done. In the example shown in FIG. 2, an opening 13b is formed on the upper side of the partition wall 13, and the sediment sampling device 100 is attached to a position corresponding to the opening 13b. With this arrangement, the earth and sand sampling device 100 can sample the excavated earth and sand on the upper side of the chamber 17. However, the mounting position of the sediment sampling device 100 with respect to the partition wall 13 is not limited to this example. For example, depending on the desired sampling position within the chamber 17, the sediment sampling device 100 may be attached to any position in the radial direction and circumferential direction of the partition wall 13, such as the lower side, right side, left side, etc. of the partition wall 13. In addition, in the example shown in FIG. 2, only one sediment sampling device 100 is provided for the partition wall 13, but if there are multiple desired sampling positions in the chamber 17, the sampling device 100 can correspond to the multiple sampling positions. A plurality of sediment sampling devices 100 may be attached to the partition wall 13 in this manner.

Next, the components of the sediment sampling device 100 will be explained. As shown in FIGS. 2 to 11, the sediment sampling device 100 includes an on-off valve 110, a cylindrical member 120, a piston 130, a casing 140, and a cylindrical member 120 inserted and removed between the body and the chamber 17. and a sliding mechanism that slides the piston 130 in the axial direction of the cylindrical member 120 within the cylindrical member 120.

The on-off valve 110 is configured to be able to open and close the opening 13b of the partition wall 13 or the movement passage of the cylindrical member 120 that communicates with the opening 13b. In the example of this embodiment, the on-off valve 110 is configured to be able to open and close the movement path of the cylindrical member 120 that communicates with the opening 13b.

Here, the movement path of the cylindrical member 120 is the internal space of the casing 140 that accommodates the cylindrical member 120. As will be described later, the cylindrical member 120 is provided so as to be movable inside the casing 140 in the axial direction of the cylindrical member 120 (hereinafter sometimes simply referred to as the "axial direction"). The on-off valve 110 has a function of opening and closing the movement passage of the cylindrical member 120 within the casing 140. Specifically, the on-off valve 110 is formed of, for example, a knife gate valve, and is attached to the casing 140 at a position slightly on the rear side of the partition wall 13 . The on-off valve 110 opens and closes the internal space of the casing 140 (that is, the movement path of the cylindrical member 120) by operating the valve body 112 to open/block the movement path. Thereby, the on-off valve 110 can indirectly open and close the opening 13b of the partition wall 13 that communicates with the moving passage. However, the on-off valve 110 is not limited to such an example, and for example, the on-off valve 110 may be configured with a gate valve disposed at the opening 13b of the partition wall 13, or may directly open and close the opening 13b of the partition wall 13. .

The cylindrical member 120 is a member having a cylindrical shape that is long in the axial direction, and functions as a sampling tube inserted into the chamber 17. The cylindrical member 120 is made of, for example, a cylindrical metal tube. It is preferable that the cylindrical member 120 is a cylindrical body. However, the cylindrical member 120 is not limited to this example, and may have any cylindrical cross-sectional shape such as an ellipse, a rectangle, a triangle, or a polygon, as long as it has an internal space. The outer diameter of the cylindrical member 120 is smaller than the diameter of the opening 13b so that the cylindrical member 120 can pass through the opening 13b of the partition wall 13. Further, the wall thickness of the cylindrical member 120 is not particularly limited, but it should be a wall thickness that can appropriately suppress insertion resistance while maintaining the strength as a sampling pipe inserted into the excavated earth and sand in the chamber 17. preferable.

The piston 130 is a plug member installed inside the cylindrical member 120, and is provided so as to be slidable inside the cylindrical member 120 in the axial direction of the cylindrical member 120. The piston 130 has a function of sucking excavated earth and sand in the chamber 17 into the cylindrical member 120 and a function of closing the front end opening 121 of the cylindrical member 120. The material of the piston 130 may be, for example, metal, or resin such as rubber or plastic. The outer circumferential surface of the piston 130 is in close contact with the inner circumferential surface of the cylindrical member 120, and is airtight and liquid-tight so that air and liquid do not escape from the gap between the two. The thickness (length in the axial direction) of the piston 130 is greater than the length in the axial direction of the cylindrical member 120 so that the piston 130 can slide inside the cylindrical member 120 from the front end side to the rear end side with a long stroke L1. It is also preferable that it is sufficiently small.

The casing 140 has a function as a container that covers the cylindrical member 120 , a function to support the cylindrical member 120 movably in the axial direction, and a function to fix the sediment sampling device 100 to the partition wall 13 . The casing 140 is attached and fixed near the opening 13b of the partition wall 13. The casing 140 is made of a hollow member that can accommodate the cylindrical member 120. The front end of the casing 140 is open, and a front end opening 141 is formed on substantially the entire surface of the front end. On the other hand, the rear end of the casing 140 is closed, and a rear end opening 142 is partially formed in the center thereof.

The internal space of the casing 140 communicates with the chamber 17 through the opening 13b of the partition wall 13, and serves as a movement passage for the cylindrical member 120. The cylindrical member 120 is movable in the axial direction in the internal space of the casing 140, and the casing 140 guides the axial movement of the cylindrical member 120. The casing 140 in the example shown in FIG. 2 and the like is constituted by a cylindrical body having a larger diameter than the cylindrical member 120. An appropriate clearance is provided between the inner circumferential surface of the casing 140 and the outer circumferential surface of the cylindrical member 120 so that the cylindrical member 120 can move smoothly in the axial direction in the internal space of the casing 140. There is. However, the casing 140 is not limited to such an example, and may have any shape other than a cylindrical shape as long as it has an internal space that can accommodate the cylindrical member 120 in an axially movable manner.

The insertion/extraction mechanism is a mechanism for moving the cylindrical member 120 in the axial direction and inserting/extracting it into/from the chamber 17 from within the body. The insertion/extraction mechanism inserts the cylindrical member 120 into the chamber 17 from inside the body through the opening 13b of the partition wall 13 by moving the cylindrical member 120 housed in the casing 140 forward in the axial direction. Furthermore, the insertion/extraction mechanism moves the cylindrical member 120 inserted into the chamber 17 axially rearward, thereby removing the cylindrical member 120 from the chamber 17 through the opening 13b into the body.

The sliding mechanism is a mechanism for sliding the piston 130 in the axial direction inside the cylindrical member 120. The sliding mechanism slides the piston 130 disposed on the rear end side of the cylindrical member 120 forward in the axial direction, and pushes the piston 130 toward the front end side of the cylindrical member 120 . Further, the sliding mechanism causes the piston 130 disposed on the front end side of the cylindrical member 120 to slide rearward in the axial direction, thereby drawing it into the rear end side of the cylindrical member 120. In this way, the sliding mechanism moves the piston 130 forward or backward in the axial direction inside the cylindrical member 120.

Note that the insertion/extraction mechanism and the sliding mechanism described above are connected to one common moving mechanism (one jack 150 or one pneumatic device) as in the first to third embodiments shown in FIGS. 2 to 6. 160, etc.), or a combination of a plurality of different moving mechanisms (for example, a combination of a jack 150 and a pneumatic device 160), as in the fourth to sixth embodiments shown in FIGS. 7 to 11. , or a combination of a plurality of jacks 180 and 190, a combination of a plurality of hydraulic mechanisms 210 and 22, etc.). Details of the specific configurations of the insertion/extraction mechanism and the sliding mechanism will be described later.

<2.3. Overview of sampling operation of sediment sampling device>
Next, an overview of the excavated soil sampling operation by the soil sampling device 100 according to the present embodiment will be described with reference to the examples shown in FIGS. 2A to 2D.

Before sampling the excavated soil in the chamber 17 using the soil sampling device 100 attached to the opening 13b formed in the partition wall 13, first, as shown in FIG. 2A, the on-off valve 110 provided in the casing 140 is The valve body 112 is closed to block the internal space of the casing 140 (the movement path of the cylindrical member 120) that communicates with the opening 13b of the partition wall 13. Thereby, excavated earth and sand in the chamber 17 can be prevented from entering the body through the opening 13b and the moving passage. Next, the cylindrical member 120 is set on the rear side of the internal space of the casing 140. At this time, the piston 130 is disposed on the front end opening 121 side within the cylindrical member 120 by sliding the piston 130 axially forward within the cylindrical member 120 in advance by the sliding mechanism.

Next, as shown in FIG. 2B, the valve body 112 of the on-off valve 110 is opened to open the movement path of the cylindrical member 120 in the casing 140 and communicate with the opening 13b of the partition wall 13. Thereafter, the cylindrical member 120 is advanced in the axial direction by the insertion/extraction mechanism and inserted into the chamber 17 through the opening 13b. At this time, the insertion stroke L2 of the cylindrical member 120 is adjusted so that the front end opening 121 of the inserted cylindrical member 120 is placed at a desired sampling position within the chamber 17. Further, when inserting the cylindrical member 120 into the chamber 17, the piston 130 is placed on the front end opening 121 side of the cylindrical member 120. Therefore, since the piston 130 functions as a plug that closes the front end opening 121 of the cylindrical member 120, excavated earth and sand do not enter into the interior through the front end opening 121 of the cylindrical member 120.

As described above, the sediment sampling device 100 opens the movement path of the cylindrical member 120 by the on-off valve 110, and the cylindrical member 120 is inserted into the chamber 17 and fixed (see FIG. 2B), and the sediment sampling device 100 is shown in FIG. 2C. As shown in , the piston 130 disposed on the front end side of the cylindrical member 120 is slid axially rearward and drawn into the rear end side of the cylindrical member 120 by the sliding mechanism. The excavated soil in the chamber 17 is taken into the interior of the cylindrical member 120 through the front end opening 121 of the cylindrical member 120 by the suction force caused by the retraction of the piston 130 . As a result, the excavated earth and sand in the chamber 17 enters and fills the internal space of the cylindrical member 120 created as the piston 130 retreats.

Next, as shown in FIG. 2D, the cylindrical member 120 that has taken in the excavated earth is moved rearward in the axial direction by the insertion/extraction mechanism, and is removed from the chamber 17 into the machine body, so that it is removed from the opening/closing valve 110 in the casing 140. Place it on the rear side. Thereafter, the valve body 112 of the on-off valve 110 is closed to block the passage of movement of the cylindrical member 120 within the casing 140. Thereby, excavated earth and sand in the chamber 17 can be prevented from entering the body through the opening 13b of the partition wall 13 and the movement passage. Then, the cylindrical member 120 that has taken in the excavated earth and sand is removed from the casing 140 inside the machine, and sampling (collection) of the excavated earth and sand is completed.

<2.4. Effects of sediment sampling equipment>
As described above, according to the present embodiment, the excavated earth and sand in the chamber 17 can be safely and reliably sampled using the earth and sand sampling device 100 which has a simpler mechanical structure than the conventional technology. Furthermore, the sediment sampling device 100 according to the present embodiment has a structure that can be easily attached to the opening 13b of the partition wall 13, so it is easy to handle, low cost, and highly versatile, and can be used with existing tunnel excavators. Additional installations can be easily done.

Further, according to the present embodiment, the excavated earth and sand in the chamber 17 can be naturally taken into the inside of the cylindrical member 120 and sampled by the suction operation using the cylindrical member 120 and the piston 130. Therefore, the excavated earth and sand in the chamber 17 can be smoothly taken into the cylindrical member 120 and sampled without kneading the excavated earth and sand as in the conventional screw blade type earth and sand sampling device. Therefore, since the properties of the excavated earth and sand are not changed during sampling, it is possible to accurately grasp the properties of the excavated earth and sand in the chamber 17.

Furthermore, the sediment sampling device 100 according to the present embodiment has a relatively simple structure, includes an on-off valve 110, a casing 140, etc., and has excellent structural sealing performance. Therefore, the excavated earth and sand in the chamber 17 can be prevented from ejecting into the body of the machine through the earth and sand sampling device 100. Therefore, the earth and sand sampling device 100 according to the present embodiment is suitably applicable not only to earth pressure type shield machines but also to muddy water type shield machines and the like, and the safety of sampling work is also high.

In addition, according to the earth and sand sampling device 100 according to the present embodiment, by changing the insertion stroke L2 of the cylindrical member 120 into the chamber 17, excavated earth and sand can be sampled from any position in the longitudinal direction within the chamber 17. can do. For example, if the insertion stroke L2 is lengthened, the excavated earth and sand near the back of the cutter head 11 can be sampled, and when the insertion stroke L2 is shortened, the excavated earth and sand near the partition wall 13 can be sampled. Therefore, not only the excavated earth and sand near the partition wall 13 but also the excavated earth and sand at any sampling position within the chamber 17, such as a position spaced forward from the partition wall 13, can be easily and appropriately sampled. Therefore, there is a high degree of freedom in selecting sampling positions within the chamber 17, and the properties of the excavated soil at each sampling position within the chamber 17 can be accurately grasped.

Note that in this embodiment, an example will be described in which the insertion direction of the cylindrical member 120 into the chamber 17 is parallel to the axial direction (tunnel extension direction) of the tunnel excavator 1; It may also be deflected in an oblique direction with respect to the axial direction of the machine 1. Thereby, it becomes possible to easily sample excavated earth and sand at more various positions within the chamber 17 from various directions.

The outline of the sediment sampling device 100 according to this embodiment has been described above. Below, a plurality of specific examples of the sediment sampling device 100 will be described in detail.

<3. Specific example of sediment sampling device>
Next, a plurality of specific examples of the sediment sampling device 100 according to the present embodiment will be described with reference to FIGS. 2 to 11. In the following, the insertion/extraction mechanism and the sliding mechanism are configured as a common moving mechanism (first to third embodiments: see FIGS. 2 to 6), and the insertion/extraction mechanism and the sliding mechanism are configured as separate mechanisms. A case in which the moving mechanism is configured by a combination of a plurality of moving mechanisms (fourth to sixth embodiments: see FIGS. 7 to 11) will be explained separately.

<3.1. When the insertion/extraction mechanism and sliding mechanism are common moving mechanisms>
As shown in FIGS. 2 to 6, the sediment sampling device 100 according to the first to third embodiments includes an insertion/extraction mechanism for inserting and extracting the cylindrical member 120 into and from the chamber 17, and a mechanism for sliding the piston 130 within the cylindrical member 120. The sliding mechanism for moving is composed of one common moving mechanism.

The moving mechanism generally includes a power applying device and a locking member. The power applying device applies power to the piston 130 to move the piston 130 in the axial direction of the cylindrical member 120 inside the cylindrical member 120 . Here, the power applying device may be configured with the jack 150 as in the first embodiment (see FIGS. 2 and 3) and the second embodiment (see FIG. 4), or It may be configured with a pneumatic device 160 as in the third embodiment (see FIGS. 5 and 6).

The locking member is a member that locks a plurality of members to each other in order to move the cylindrical member 120 together with the piston 130 in the axial direction. The locking member locks the cylindrical member 120 and the piston 130 with each other so that the cylindrical member 120 and the piston 130 move in conjunction with each other. The locking member locks the cylindrical member 120 and the piston 130 as in the first embodiment (see FIGS. 2 and 3) and the third embodiment (see FIGS. 5 and 6). It may be configured with a pair of front and rear stoppers 123 and 124. Alternatively, the locking member may include a rear stopper 124 that locks the cylindrical member 120 and the piston 130, and a rear stopper 124 that locks the cylindrical member 120 and the jack 150, as in the second embodiment (see FIG. 4). It may also be combined with a stopper 155.

In this way, by configuring the insertion/extraction mechanism and the sliding mechanism as one common moving mechanism, the insertion/extraction operation of the cylindrical member 120 and the sliding operation of the piston 130 can be realized with one mechanism. Therefore, the number of parts of the insertion/extraction mechanism and the sliding mechanism can be reduced, and the mechanical structure can be simplified, so that the reliability of the insertion/extraction operation and sliding operation by the earth and sand sampling device 100 can be improved.

<3.1.1. First embodiment>
Next, with reference to FIGS. 2 and 3, the sediment sampling device 100 according to the first embodiment of the present invention will be described in detail. 2A to 2D are cross-sectional views showing the operation of the sediment sampling device 100 according to the first embodiment. FIG. 3 is an enlarged sectional view showing the peripheral configuration of the cylindrical member 120 of the sediment sampling device 100 according to the first embodiment.

First, the configuration of the sediment sampling device 100 according to the first embodiment will be described. As shown in FIGS. 2 and 3, the sediment sampling device 100 according to the first embodiment includes one jack 150 as a power imparting device for a common moving mechanism (insertion/extraction mechanism and sliding mechanism). The jack 150 is preferably configured with a hydraulic jack, for example, but may be configured with other types of jacks such as an air jack.

The jack 150 includes a telescoping rod 151 that is extendable and retractable in the axial direction of the cylindrical member 120, and a jack body 152 that accommodates and supports the telescoping rod 151. As shown in FIG. 3, the telescopic rod 151 of the jack 150 is inserted into the inside of the casing 140 through the rear end opening 142 formed through the rear end of the casing 140, and is inserted into the rear end of the cylindrical member 120. It is inserted into the inside of the cylindrical member 120 through the rear end opening 122 formed therethrough. The telescopic rod 151 is inserted through the rear end opening 142 of the casing 140 and the rear end opening 122 of the cylindrical member 120 and connected to the piston 130, but is not connected to the casing 140 or the cylindrical member 120.

The jack body 152 is arranged behind the casing 140 that houses the cylindrical member 120. The front end of the jack body 152 is connected to and fixed to the rear end of the casing 140. The jack 150 extends and contracts a telescoping rod 151 with respect to a jack body 152 fixed to the casing 140. The expansion and contraction of the telescopic rod 151 causes the piston 130 to slide in the axial direction inside the cylindrical member 120, and in conjunction with the sliding movement of the piston 130, the cylindrical member 120 is moved in the axial direction inside the casing 140. It can be slid.

In order to achieve such interlocking between the piston 130 and the cylindrical member 120, in the first embodiment, a pair of front and rear stoppers are provided on the cylindrical member 120 as locking members that lock the piston 130 and the cylindrical member 120. 123 and 124 are formed. Specifically, the locking member includes a front stopper 123 provided on the front end side of the cylindrical member 120 and a rear stopper 124 provided on the rear end side of the cylindrical member 120.

A sliding range of the piston 130 within the cylindrical member 120 is regulated by a front stopper 123 and a rear stopper 124 provided at the front end and rear end of the cylindrical member 120, respectively. The piston 130 is capable of sliding axially forward and backward inside the cylindrical member 120 within the range of a sliding stroke L1 shown in FIGS. 2A and 2C.

The front stopper 123 is provided at the front end opening 121 of the cylindrical member 120. The front stopper 123 is provided in an annular or intermittent partial arc shape along the inner peripheral surface of the front end of the cylindrical member 120, and extends from the inner peripheral surface toward the radial center of the cylindrical member 120. It is formed like this. The front stopper 123 can lock the piston 130 that has slid toward the front end side of the cylindrical member 120 (see FIG. 2B). A radially inner opening portion of the front stopper 123 becomes a front end opening 121 of the cylindrical member 120, and the front end opening 121 becomes an inlet for excavated earth and sand during earth and sand sampling, which will be described later. From this point of view, the size of the front stopper 123 (radial extension width) is made as small as possible within the range in which the piston 130 can be locked by the front stopper 123, and the front end opening 120 of the cylindrical member 120 is closed by the front stopper 123. It is preferable to minimize the area covered. This makes it possible to secure a large area of the front end opening 121 which is the inlet for excavated earth and sand, and allows the excavated earth and sand to be smoothly introduced into the cylindrical member 120 from the front end opening 121.

On the other hand, the rear stopper 124 is provided at the rear end opening 122 of the cylindrical member 120. The rear stopper 124 is annularly provided along the inner circumferential surface of the rear end of the cylindrical member 120 and is formed to protrude from the inner circumferential surface toward the radial center of the cylindrical member 120 . The rear stopper 124 can lock the piston 130 that has slid toward the rear end side of the cylindrical member 120 (see FIG. 2C). The radially inner opening portion of the rear stopper 124 becomes the rear end opening 122 of the cylindrical member 120, and the rear end opening 122 functions as an insertion hole through which the telescopic rod 151 of the jack 150 described above is inserted. The rear stopper 124 not only functions to lock the piston 130 as described above, but also functions as a shielding member that closes the rear end of the cylindrical member 120. From this point of view, it is preferable to make the size (radial extension width) of the rear stopper 124 as large as possible so that the area that the rear stopper 124 covers the rear end of the cylindrical member 120 is made as large as possible. Thereby, excavated earth and sand taken into the inside of the cylindrical member 120 during earth and sand sampling, which will be described later, can be prevented from leaking out from the rear end opening 122 of the cylindrical member 120.

As described above, the sediment sampling device 100 according to the first embodiment includes a moving mechanism that has both the functions of an insertion/extraction mechanism and a sliding mechanism, and the moving mechanism includes the jack 150 as a power applying device. and a front stopper 123 and a rear stopper 124 as locking members.

With this configuration, the sediment sampling device 100 can be mounted on a jack with the piston 130 advanced within the cylindrical member 120 in contact with the front stopper 123 of the cylindrical member 120, as shown in FIGS. 2A and 2B. 150 applies axial forward power to the piston 130. Thereby, the cylindrical member 120 can be moved axially forward together with the piston 130 and inserted into the chamber 17 . Furthermore, as shown in FIGS. 2C and 2D, the sediment sampling device 100 is configured to use a jack 150 to axially rearward the piston 130 with the retracted piston 130 in contact with the rear stopper 124 of the cylindrical member 120. Gives power to Thereby, the cylindrical member 120 can be moved axially rearward together with the piston 130, and can be removed from the chamber 17 into the body.

As described above, according to the first embodiment, the connection relationship between the piston 130 and the cylindrical member 120 and the jack 150 is devised, and the piston 130 and the cylindrical member 120 are mutually connected by the stoppers 123 and 124. Make it a structure that can be locked. Thereby, using one jack 150, the piston 130 and the cylindrical member 120 can be moved forward and backward in the axial direction in conjunction with each other. Therefore, the operation of sliding the piston 130 within the cylindrical member 120 and the operation of inserting and extracting the cylindrical member 120 into and out of the chamber 17 can be realized with only one moving mechanism (jack 150).

Next, with reference to FIGS. 2A to 2D, a sampling operation of excavated soil by the soil sampling device 100 according to the first embodiment will be described.

FIG. 2A shows a standby state before the sediment sampling operation. As shown in FIG. 2A, the sediment sampling device 100 is installed near the opening 13b of the bulkhead 13 in the body behind the bulkhead 13. Specifically, the tip of the casing 140 is attached to the opening 13b of the partition wall 13, and the cylindrical member 120 and the piston 130 are installed inside the casing 140. The piston 130 is previously slid axially forward in the cylindrical member 120 (toward the chamber 17) by a jack 150 (sliding mechanism), and pushed out to a position where it abuts the front stopper 123.

In the standby state shown in FIG. 2A, the on-off valve 110 attached to the casing 140 is in a closed state, and the internal space of the casing 140 (that is, the movement path of the cylindrical member 120) is blocked by the valve body 112. ing. Therefore, the excavated earth and sand in the chamber 17 is blocked by the on-off valve 110, so that the excavated earth and sand can be prevented from entering the body of the machine through the opening 13b of the partition wall 13 and the internal space of the casing 140. Further, a piston 130 is installed inside the cylindrical member 120, and the piston 130 also functions as a plug that blocks the internal space of the cylindrical member 120 and prevents excavated earth and sand from entering the body. The combined shielding function of the on-off valve 110, the cylindrical member 120, the piston 130, and the casing 140 makes it possible to more reliably prevent excavated soil from being ejected into the body through the soil sampling device 100.

Next, when starting the sediment sampling operation, first, as shown in FIG. 2B, the valve body 112 of the on-off valve 110 is opened to open the movement passage of the cylindrical member 120 in the casing 140. Thereafter, by extending the telescopic rod 151 of the jack 150 (insertion/extraction mechanism), the piston 130 is pushed forward in the axial direction. At this time, since the piston 130 is in contact with the front stopper 123 of the cylindrical member 120, the cylindrical member 120 moves forward in the axial direction together with the piston 130. As a result, the cylindrical member 120 moves forward through the movement passage within the casing 140, passes through the on-off valve 110, and is inserted into the chamber 17 through the opening 13b of the partition wall 13. During this insertion, the insertion stroke L2 of the cylindrical member 120 is adjusted so that the front end opening 121 of the cylindrical member 120 inserted into the chamber 17 is located at a desired sampling position within the chamber 17.

Thereafter, as shown in FIG. 2C, by contracting the telescopic rod 151 of the jack 150 (sliding mechanism), the piston 130 is slid axially rearward within the cylindrical member 120, and Pull it to the end. The sliding stroke L1 of the piston 130 at this time is the same as the sliding stroke L1 shown in FIG. 2A above. As a result, the piston 130 slides toward the rear end opening 122 of the cylindrical member 120 and comes into contact with the rear stopper 124. Due to the suction force caused by the retraction of the piston 130, the excavated earth and sand in the chamber 17 is taken into the interior of the cylindrical member 120 through the front end opening 121 of the cylindrical member 120, and the interior of the cylindrical member 120 is filled.

Next, while the piston 130 remains in contact with the rear stopper 124, the telescoping rod 151 of the jack 150 (sliding mechanism and insertion/extraction mechanism) is further contracted to pull the piston 130 back. At this time, since the piston 130 is in contact with the rear stopper 124, the cylindrical member 120 moves rearward in the axial direction together with the piston 130. As a result, the cylindrical member 120 moves backward through the movement passage in the casing 140, passes through the on-off valve 110, is extracted from the chamber 17 into the body, and is retracted into the casing 140, as shown in FIG. 2D. Ru. Then, when the rear end of the cylindrical member 120 contacts the rear end of the casing 140 (that is, when the removal stroke of the cylindrical member 120 becomes the same as the insertion stroke L2 in FIG. 2B), the jack 150 At the same time, the on-off valve 110 is closed, and the internal space of the casing 140 (the movement path of the cylindrical member 120) is shut off by the valve body 112.

Thereby, the cylindrical member 120 that has taken in the excavated earth and sand in the chamber 17 can be recovered into the body behind the partition wall 13. At this time, since the on-off valve 110 disposed on the front side of the casing 140 is closed, excavated earth and sand in the chamber 17 can be prevented from entering the fuselage body through the opening 13b of the bulkhead 13 and the internal space of the casing 140. . Thereafter, the cylindrical member 120 that has taken in the excavated earth and sand is removed from the casing 140 together with the piston 130 inside the machine. Then, by taking out the excavated earth and sand from inside the cylindrical member 120, sampling of the excavated earth and sand is completed.

The sediment sampling method using the sediment sampling device 100 according to the first embodiment has been described above. According to the first embodiment, the insertion and removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be realized by one common movement mechanism (jack 150). Therefore, as described above, the number of parts can be reduced, the mechanical structure can be simplified, and the reliability of the insertion/extraction operation and sliding operation can be improved.

Further, in the first embodiment, the power imparting device for the moving mechanism is configured with one jack 150, for example, a hydraulic jack. Thereby, by using the jack 150 with a large output as the power applying device, reliable operation (insertion/extraction operation, sliding operation) of the power applying device can be realized.

Moreover, with a simple structure in which two stoppers (front stopper 123 and rear stopper 124) are provided at both ends of the cylindrical member 120 as locking members, the cylindrical member 120 and the piston 130 can be moved in conjunction with each other. . This also allows the number of parts of the moving mechanism to be reduced and the mechanical structure to be simplified.

Note that consideration may be given to the structure of the sediment sampling device 100 in order to make the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 as intended. For example, in the operation order according to the present embodiment described above, the sliding operation of the piston 130 comes first than the insertion/removal operation of the cylindrical member 120 in both the forward movement and the backward movement. For this reason, so that the insertion/extraction operation of the cylindrical member 120 is delayed, for example, a resistance may be provided in the mechanism section for the insertion/extraction operation to slow down the insertion/extraction operation, or a resistance may be provided in the mechanism section for the insertion/extraction operation. A mechanical locking mechanism may be provided and the locking mechanism may be released after the sliding movement of the piston 130. With these additional configurations, the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be made as intended.

<3.1.2. Second embodiment>
Next, with reference to FIG. 4, a sediment sampling device 100 according to a second embodiment of the present invention will be described in detail. 4A to 4D are cross-sectional views showing the operation of the sediment sampling device 100 according to the second embodiment.

The sediment sampling device 100 (see FIG. 4) according to the second embodiment is different from the first embodiment (see FIGS. 2 and 3) in the configuration of the locking member, and other configurations. The elements are the same as those in the first embodiment. Therefore, in the following, the differences in the locking member, which is a feature of the second embodiment, will be mainly explained, and detailed explanations of the other components will be omitted.

As shown in FIG. 4, the sediment sampling device 100 according to the second embodiment uses, as a locking member, the front stopper 123 (see FIG. 3) of the cylindrical member 120 according to the first embodiment. The difference is that a stopper 155 is provided on the telescopic rod 151 of the jack 150.

Specifically, in the second embodiment, a rear stopper 124 is provided at the rear end of the cylindrical member 120 as in the first embodiment, but the rear stopper 124 is provided at the front end of the cylindrical member 120. The front stopper 123 as in the first embodiment is not provided. In the second embodiment, a stopper 155 is provided in the middle of the telescopic rod 151 of the jack 150 instead of the front stopper 123 of the first embodiment. The stopper 155 is a disk-shaped stopper that is formed so as to project outward from the telescopic rod 151 in the radial direction. The stopper 155 can lock the rear end portion (rear stopper 124) of the cylindrical member 120.

Stopper 155 is arranged inside casing 140 between the rear end of cylindrical member 120 and the rear end of casing 140 . As shown in FIGS. 4A and 4B, when the telescopic rod 151 of the jack 150 is extended and the forward piston 130 is located near the front end opening 121 of the cylindrical member 120, the stopper 155 is placed behind the cylindrical member 120. The position of the stopper 155 on the telescopic rod 151 is adjusted so that it comes into contact with the end portion. Thereby, by extending the telescopic rod 151 of the jack 150, the cylindrical member 120 can be pushed forward in the axial direction by the stopper 155, and the cylindrical member 120 can be inserted into the chamber 17.

Further, as shown in FIGS. 4C and 4D, by contracting the telescopic rod 151 of the jack 150, the retracted piston 130 is brought into contact with the rear stopper 124 of the cylindrical member 120, and the cylindrical member 120 is moved inside the casing 140. When retracting the piston 130 together with the piston 130, it is necessary to prevent the stopper 155, which has also retreated, from interfering with the rear end of the casing 140. Therefore, in the second embodiment, the casing 140 is formed to extend longer toward the rear than the first embodiment, and there is a space inside the casing 140 for the retreated stopper 155 to retreat. is ensured. In addition, if the casing 140 in this case is watertight as a housing part for the cylindrical member 120, there is a space for checking the stopper 155 in the casing 140 at a position corresponding to the space for the stopper 155 to retreat. A window (opening) may be provided.

Even in the case of the second embodiment as described above, the cylindrical member 120 and the piston 130 are held together by the jack 150, the rear stopper 124, and the stopper 155 during the sampling operation of excavated earth and sand, as in the first embodiment. It can be moved forward and backward in conjunction.

That is, in the standby state shown in FIG. 4A, the stopper 155 is in contact with the rear stopper 124 at the rear end of the cylindrical member 120, and the piston 130 is arranged near the front end opening 121 of the cylindrical member 120. . When the jack 150 is extended from this standby state, the locking function of the stopper 155 allows the cylindrical member 120 to be pushed forward. As a result, as shown in FIG. 4B, the cylindrical member 120 can be moved forward together with the piston 130 and inserted into the chamber 17.

Next, when the jack 150 is retracted, the piston 130 moves back inside the cylindrical member 120, and the excavated soil in the chamber 17 is taken into the cylindrical member 120, and the piston 130 The tubular member 120 comes into contact with a rear stopper 124 at the rear end and is locked. When the jack 150 is further retracted from the state shown in FIG. 4C and the piston 130 is moved back, the cylindrical member 120 is also moved back together with the piston 130 due to the locking function of the rear stopper 124, as shown in FIG. 4D. Then, it is extracted from the chamber 17 into the body of the machine. At the time of this removal, the stopper 155 can retreat through the internal space of the casing 140 that extends rearward, so that it does not interfere with the rear end of the casing 140.

As described above, in the second embodiment, the stopper 155 provided on the telescoping rod 151 of the jack 150 is used to perform the sampling operation of the excavated earth and sand in the chamber 17 in the same manner as in the first embodiment. Can be done. Therefore, the second embodiment also has the same effects as the first embodiment.

In addition, in the second embodiment, similarly to the first embodiment, in order to make the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 as intended, the sediment sampling device 100 is Consideration may be given to the structure of For example, in the operation order according to the present embodiment described above, the sliding operation of the piston 130 comes first than the insertion/removal operation of the cylindrical member 120 in both the forward movement and the backward movement. For this reason, so that the insertion/extraction operation of the cylindrical member 120 is delayed, for example, a resistance may be provided in the mechanism section for the insertion/extraction operation to slow down the insertion/extraction operation, or a resistance may be provided in the mechanism section for the insertion/extraction operation. A mechanical locking mechanism may be provided and the locking mechanism may be released after the sliding movement of the piston 130. With these additional configurations, the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be made as intended.

<3.1.3. Third embodiment>
Next, with reference to FIGS. 5 and 6, a sediment sampling device 100 according to a third embodiment of the present invention will be described in detail. 5A to 5D are cross-sectional views showing the operation of the sediment sampling device 100 according to the third embodiment. FIG. 6 is a schematic diagram showing the periphery of the cylindrical member 120 and the configuration of the pneumatic device 160 of the sediment sampling device 100 according to the third embodiment. Note that for convenience of explanation, illustration of the wire 170 and the winding device 172 is omitted in FIG. 6 .

The sediment sampling device 100 according to the third embodiment (see FIGS. 5 and 6) moves the cylindrical member 120 and the piston 130, compared to the first embodiment (see FIGS. 2 and 3). The difference is that a pneumatic device 160 is used instead of the jack 150 as a power supply device for the common movement mechanism (insertion/extraction mechanism and sliding mechanism), and other components are the same as in the first embodiment. It is. Therefore, below, the pneumatic device 160, which is a feature of the third embodiment, will be mainly explained, and detailed explanations of the other components will be omitted.

First, the configuration of a sediment sampling device 100 according to a third embodiment will be described. As shown in FIGS. 5 and 6, the sediment sampling device 100 according to the third embodiment includes one pneumatic device 160 as a power applying device for a common moving mechanism (insertion/extraction mechanism and sliding mechanism). Furthermore, a wire 170 and a winding device 172 are provided as auxiliary devices of the power applying device.

The pneumatic device 160 has a function of moving the cylindrical member 120 and the piston 130 in the axial direction using air pressure. As shown in FIGS. 5 and 6, the sediment sampling device 100 includes a casing 140 that is attached around the opening 13b of the partition wall 13 and houses the cylindrical member 120. The internal space of the casing 140 communicates with the opening 13b of the partition wall 13 and forms a movement passage for the cylindrical member 120. The pneumatic device 160 is capable of supplying and suctioning air to the space on the rear side of the cylindrical member 120 in the internal space of the casing 140 .

Here, with reference to FIG. 6, the configuration of the pneumatic device 160 will be described in detail. As shown in FIG. 6, the pneumatic device 160 includes a compressor 161, a pressure regulating valve 162, a switching valve 163, a silencer 164, and flow paths 165, 166, and 167.

The compressor 161 generates air at a pressure higher than atmospheric pressure using the power of the motor. The pressure regulating valve 162 is connected to the compressor 161 via a flow path 166 and regulates the pressure of the air generated by the compressor 161. The switching valve 163 is connected to the casing 140 via a flow path 165, to the pressure regulating valve 162 via a flow path 166, and to the silencer 164 via a flow path 167. The switching valve 163 switches the flow path communicating with the flow path 165 to a flow path 166 or a flow path 167. This switching operation of the switching valve 163 allows the flow path 165 and the flow path 166 to communicate with each other, so that the high-pressure air generated by the compressor 161 can be supplied to the casing 140. Further, by communicating the flow path 165 and the flow path 167, air can be extracted from the internal space of the casing 140 and released from the silencer 164 to the atmosphere.

A rear end opening 142 is formed at the rear end of the casing 140 for supplying air from the pneumatic device 160 to the internal space of the casing 140 (the space on the rear side of the cylindrical member 120). Furthermore, a rear end opening 122 is formed at the rear end of the cylindrical member 120 for supplying the air to the internal space of the cylindrical member 120 (the space on the rear side of the piston 130). The rear end opening 142 and the rear end opening 122 function as communication ports for sending air into these spaces. In this way, the flow path 165 of the pneumatic device 160, the rear portion of the internal space of the casing 140, and the rear portion of the internal space of the cylindrical member 120 are in communication with each other, and the pneumatic device 160 allows these to communicate with each other. It is possible to supply air to a space or to suck air from the space.

Here, with reference to FIG. 6, the operation of moving the piston 130 and the cylindrical member 120 in the axial direction by the pressure of air supplied from the pneumatic device 160 will be described. Note that FIG. 6 also shows the pressures (P1, Patm, Px, P0) at each part of the sediment sampling device 100. P0 is the soil water pressure inside the chamber 17. Px is the atmospheric pressure in the internal space of the casing 140 and the cylindrical member 120 (hereinafter also referred to as "air chamber"). P1 is the atmospheric pressure of high-pressure air supplied from the compressor 161. Patm is atmospheric pressure. P1 is a positive pressure greater than Patm and P0.

As shown in FIG. 6, the piston 130 is slid axially forward or backward within the cylindrical member 120 due to the differential pressure between the earth water pressure P0 within the chamber 17 and the air pressure Px of the air chamber within the casing 140. Can be done.

For example, when high-pressure air (P1) from the compressor 161 is supplied to the air chamber in the casing 140, the air pressure (Px) in the air chamber becomes Px=P1>P0. In this way, if Px=P1>P0, the piston 130 is pushed forward in the axial direction by the high pressure air (Px) in the air chamber, so the piston 130 is slid forward in the axial direction within the cylindrical member 120 ( forward). Further, since the advancing piston 130 and the front stopper 123 of the cylindrical member 120 come into contact with each other, the cylindrical member 120 is slid (advanced) in the axial direction together with the piston 130 within the casing 140, and the cylindrical member 120 is moved forward. It can be inserted into chamber 17 from within the body.

On the other hand, when the switching valve 163 is switched to connect the air chamber in the casing 140 to the silencer 164 to remove high-pressure air from the air chamber, the air pressure (Px) in the air chamber becomes Px=Patm<P0. In this way, if Px=Patm<P0, the piston 130 is sucked rearward in the axial direction due to the differential pressure between the earth water pressure (P0) in the chamber 17 and the air pressure (Px) in the air chamber, so the cylindrical shape Piston 130 can be slid axially rearward (retracted) within member 120. Further, since the retracting piston 130 and the rear stopper 124 of the cylindrical member 120 come into contact with each other, the cylindrical member 120 is slid (backed) in the axial direction together with the piston 130 within the casing 140, and the cylindrical member 120 is moved into the chamber. It can be removed from 17 into the fuselage.

Furthermore, in the pneumatic device 160 shown in FIG. 6, a vacuum pump (negative pressure generating pump) may be installed in place of the silencer 164. Thereby, negative pressure (Px) can be generated in the air chamber in the casing 140 using the vacuum pump, and Px<Patm<P0. Therefore, since the piston 130 can be attracted with a stronger suction force, it becomes possible to more reliably slide (retreat) the piston 130 rearward in the axial direction.

Next, with reference to FIG. 5, the configurations of the wire 170 and the winding device 172 will be described. As described above, the wire 170 and the winding device 172 function as auxiliary devices for the power supply device of the movement mechanism (insertion/extraction mechanism and sliding mechanism) that moves the piston 130 and the cylindrical member 120 in the axial direction.

As shown in FIG. 5, one end of the wire 170 is connected to the piston 130 through the rear end opening 142 of the casing 140 and the rear end opening 122 of the cylindrical member 120, and is not connected to the cylindrical member 120. . The other end of the wire 170 is connected to a winding device 172 installed outside the casing 140. The winding device 172 is a device that can wind up and feed out the wire 170.

By winding up the wire 170 using the winding device 172, the piston 130 can be pulled axially rearward within the cylindrical member 120 and forced to retreat. Therefore, when the air suction force of the pneumatic device 160 is insufficient, by operating the winding device 172, the piston 130 and the cylindrical member 120 can be more reliably retreated. Note that if it is possible to move the piston 130 and the cylindrical member 120 forward and backward using only the air pressure (P1) of the pneumatic device 160, the wire 170 and the winding device 172 may not be provided. .

As described above, according to the third embodiment, the pneumatic device 160 is used as the movement mechanism for the piston 130 and the cylindrical member 120 to move the piston 130 and the cylindrical member 120. Furthermore, similarly to the first embodiment, the piston 130 and the cylindrical member 120 are configured to be lockable to each other by the front stopper 123 and the rear stopper 124 provided on the cylindrical member 120. Thereby, using the pneumatic device 160, the piston 130 and the cylindrical member 120 can be moved forward and backward in the axial direction in conjunction with each other. Therefore, the operation of sliding the piston 130 within the cylindrical member 120 and the operation of inserting and removing the cylindrical member 120 into and from the chamber 17 can be realized with only one moving mechanism (pneumatic device 160).

Furthermore, by additionally installing the wire 170 and the winding device 172 as auxiliary devices for the power applying device, it becomes possible to more reliably retreat the piston 130 and the cylindrical member 120.

Next, with reference to FIGS. 5A to 5D, a sampling operation of excavated soil by the soil sampling device 100 according to the third embodiment will be described.

First, in the standby state shown in FIG. 5A, the on-off valve 110 attached to the casing 140 is in a closed state, and the internal space of the casing 140 (that is, the movement path of the cylindrical member 120) is closed by the valve body 112. It is blocked. A cylindrical member 120 and a piston 130 are installed inside the casing 140. The piston 130 is previously slid axially forward in the cylindrical member 120 (towards the chamber 17) by a pneumatic device 160 (sliding mechanism), and pushed out to a position where it abuts the front stopper 123.

Next, when starting the sediment sampling operation, first, as shown in FIG. 5B, after opening the on-off valve 110, high pressure air is supplied to the air chamber in the casing 140 by the pneumatic device 160 (insertion/extraction mechanism). The pressure of this high-pressure air pushes the piston 130 forward in the axial direction. At this time, since the piston 130 is in contact with the front stopper 123 of the cylindrical member 120, the cylindrical member 120 moves forward in the axial direction together with the piston 130. As a result, the cylindrical member 120 moves forward through the movement passage within the casing 140, passes through the on-off valve 110, and is inserted into the chamber 17 through the opening 13b of the partition wall 13. During this insertion, the insertion stroke L2 of the cylindrical member 120 is adjusted so that the front end opening 121 of the cylindrical member 120 inserted into the chamber 17 is located at a desired sampling position within the chamber 17.

Thereafter, as shown in FIG. 5C, air is removed from the air chamber in the casing 140 by the pneumatic device 160 (sliding mechanism), and the piston 130 is sucked axially rearward. As a result, the piston 130 is slid axially rearward within the cylindrical member 120 and drawn toward the rear end side of the cylindrical member 120. As a result, the piston 130 slides toward the rear end opening 122 of the cylindrical member 120 and comes into contact with the rear stopper 124. Due to the suction force caused by the retraction of the piston 130, the excavated earth and sand in the chamber 17 is drawn into the interior of the cylindrical member 120 through the front end opening 121 of the cylindrical member 120, and the interior of the cylindrical member 120 is filled.

Next, as shown in FIG. 5D, air is further removed from the air chamber in the casing 140 by the pneumatic device 160 (sliding mechanism and insertion/extraction mechanism), and the piston 130 is sucked axially rearward. Pull back. At this time, since the piston 130 is in contact with the rear stopper 124, the cylindrical member 120 moves rearward in the axial direction together with the piston 130. As a result, the cylindrical member 120 moves backward along the movement path in the casing 140, passes through the on-off valve 110, is extracted from the chamber 17 into the body, and is retreated into the casing 140. When the rear end of the cylindrical member 120 comes into contact with the rear end of the casing 140, the suction operation of the pneumatic device 160 is stopped, the on-off valve 110 is closed, and the valve body 112 is opened to the inner space of the casing 140. (the movement path of the cylindrical member 120) is blocked.

As described above, the cylindrical member 120 that has taken in the excavated earth and sand in the chamber 17 can be recovered into the body behind the partition wall 13. Thereafter, the cylindrical member 120 that has taken in the excavated earth and sand is removed from the casing 140 together with the piston 130 inside the machine. Then, by taking out the excavated earth and sand from inside the cylindrical member 120, sampling of the excavated earth and sand is completed.

In addition, in the suction process shown in FIGS. 5C and 5D, for example, when the piston 130, the cylindrical member 120, and the casing 140 are fixed to each other, the suction force of the air of the pneumatic device 160 alone is insufficient to remove the piston 130 and the casing 140. There may also be cases where it is difficult to retreat the cylindrical member 120.

In this case, the piston 130 may be moved backward using the wire 170 and the winding device 172 as auxiliary devices for the pneumatic device 160 (power applying device). That is, by winding up the wire 170 with the winding device 172 and pulling the piston 130 axially rearward, the piston 130 is forcibly retreated within the cylindrical member 120 as shown in FIG. 5C. Excavated earth and sand can be taken into the shaped member 120. Furthermore, as shown in FIG. 5D, by further winding up the wire 170 by the winding device 172, the cylindrical member 120 is forcibly retreated together with the piston 130, and the cylindrical member 120 is moved from the chamber 17 into the casing 140. It can be removed.

The sediment sampling method using the sediment sampling device 100 according to the third embodiment has been described above. According to the third embodiment, the insertion and removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be realized by one common movement mechanism (pneumatic device 160). Therefore, as described above, the number of parts can be reduced, the mechanical structure can be simplified, and the reliability of the insertion/extraction operation and sliding operation can be improved. Therefore, the third embodiment also has the same effects as the first embodiment.

Further, according to the third embodiment, since the pneumatic device 160 is used as the power supply device for the moving mechanism, there is no need to use a mechanical drive device like the jack 150 of the first embodiment. . Therefore, compared to the first embodiment, the component configuration of the power application device can be simplified, and the installation space for the power application device within the fuselage can be reduced.

Furthermore, according to the third embodiment, the piston 130 is pushed forward in the axial direction by air from the pneumatic device 160, and the piston 130 is pulled back in the axial direction by pulling the wire 170. You can. As a result, even if the suction force of the piston 130 by the air of the pneumatic device 160 is insufficient due to the sticking of the piston 130 and the cylindrical member 120, the wire 170 is pulled by the winding device 172. The mechanical action allows the piston 130 and the cylindrical member 120 to be pulled back more reliably.

In addition, in the third embodiment, similarly to the first embodiment, in order to make the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 as intended, the sediment sampling device 100 is Consideration may be given to the structure of For example, in the operation order according to the present embodiment described above, the sliding operation of the piston 130 comes first than the insertion/removal operation of the cylindrical member 120 in both the forward movement and the backward movement. For this reason, so that the insertion/extraction operation of the cylindrical member 120 is delayed, for example, a resistance may be provided in the mechanism section for the insertion/extraction operation to slow down the insertion/extraction operation, or a resistance may be provided for the mechanism section for the insertion/extraction operation. A mechanical locking mechanism may be provided and the locking mechanism may be released after the sliding movement of the piston 130. With these additional configurations, the order of the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be made as intended.

<3.2. When the insertion/extraction mechanism and sliding mechanism are a combination of separate mechanisms>
Next, with reference to FIGS. 7 to 11, an insertion/extraction mechanism for inserting/extracting the cylindrical member 120 into/from the chamber 17 and a sliding mechanism for sliding the piston 130 within the cylindrical member 120 are provided in a plurality of different ways. An example configured by a combination of moving mechanisms will be described.

<3.2.1. Fourth embodiment>
First, a sediment sampling device 100 according to a fourth embodiment of the present invention will be described with reference to FIGS. 7 and 8. 7A to 7D are cross-sectional views showing the operation of the sediment sampling device 100 according to the fourth embodiment. FIG. 8 is an enlarged sectional view showing the periphery of the cylindrical member 120 and the configuration of the pneumatic device 160 of the earth and sand sampling device 100 according to the fourth embodiment.

Compared to the first embodiment (see FIGS. 2 and 3), the sediment sampling device 100 according to the fourth embodiment (see FIGS. 7 and 8) is provided with a jack 150 as an insertion/extraction mechanism, The second embodiment is different in that a pneumatic device 160 is provided as a sliding mechanism, and other components are the same as those in the first embodiment. Therefore, below, the combination structure of the jack 150 (insertion/extraction mechanism) and the pneumatic device 160 (sliding mechanism), which is a feature of the fourth embodiment, will be mainly explained, and detailed explanation of other components will be omitted. .

As shown in FIGS. 7 and 8, in the fourth embodiment, an insertion/extraction mechanism for inserting/extracting the cylindrical member 120 into/from the chamber 17 includes a jack 150 that is extendable/retractable in the axial direction of the cylindrical member 120. On the other hand, a sliding mechanism for sliding the piston 130 within the cylindrical member 120 is constituted by a pneumatic device 160 that can supply and suck air into the cylindrical member 120. In this way, in the fourth embodiment, separate mechanisms such as the jack 150 and the pneumatic device 160 are provided as the power applying device.

As shown in FIG. 8, a jack 150 (insertion/extraction mechanism) according to the fourth embodiment includes a telescoping rod 151 that is extendable in the axial direction of a cylindrical member 120, and a jack body 152 that accommodates and supports the telescoping rod 151. and has. The telescopic rod 151 of the jack 150 is inserted into the casing 140 through a rear end opening 142 formed through the rear end of the casing 140. The telescopic rod 151 is inserted through the rear end opening 142 of the casing 140 and connected to the rear end of the cylindrical member 120, but is not connected to the casing 140 or the piston 130.

The jack body 152 is arranged behind the casing 140 that houses the cylindrical member 120. The front end of the jack body 152 is connected to and fixed to the rear end of the casing 140. The jack 150 extends and contracts a telescoping rod 151 with respect to a jack body 152 fixed to the casing 140. The expansion and contraction of the telescopic rod 151 allows the cylindrical member 120 to slide in the axial direction inside the casing 140, thereby allowing the cylindrical member 120 to be inserted into and removed from the chamber 17.

That is, the sediment sampling device 100 can move the cylindrical member 120 axially forward within the casing 140 and insert it into the chamber 17 through the opening 13b of the partition wall 13 by extending the jack 150. Further, by contracting the jack 150, the cylindrical member 120 can be moved axially rearward and removed from the chamber 17 through the opening 13b into the body.

Further, the cylindrical member 120 according to the fourth embodiment is open at its front end and has a front end opening 121. A front stopper 123 similar to that of the first embodiment is formed around the front end opening 121 so as to protrude toward the center in the radial direction. This front stopper 123 can lock the piston 130. On the other hand, the rear end of the cylindrical member 120 is closed and does not have a rear end opening (see FIG. 3) as in the first embodiment, so that air does not leak out. There is. An air hose 168 is introduced into the rear end of the cylindrical member 120.

The pneumatic device 160 (sliding mechanism) according to the fourth embodiment is capable of supplying and suctioning air to the space (air chamber) on the rear side of the piston 130 in the internal space of the cylindrical member 120. be. As shown in FIG. 8, the pneumatic device 160 includes a compressor 161, a pressure regulating valve 162, a switching valve 163, a silencer 164, flow paths 166 and 167, and an air hose 168. The configuration of the pneumatic device 160 according to the fourth embodiment is substantially the same as that of the pneumatic device 160 according to the third embodiment (see FIG. 6), so detailed explanation will be omitted.

However, the pneumatic device 160 according to the fourth embodiment is connected to the cylindrical member 120 through an air hose 168. The air hose 168 is configured to be expandable and retractable as the cylindrical member 120 moves forward and backward in order to smoothly supply and suck air to the cylindrical member 120, which is a movable part. The pneumatic device 160 supplies and sucks air into a space (air chamber) on the rear side of the piston 130 in the internal space of the cylindrical member 120 using the air hose 168 . The switching valve 163 switches the flow path communicating with the air hose 168 to a flow path 166 or a flow path 167. This switching operation of the switching valve 163 allows the air hose 168 and the flow path 166 to communicate with each other, so that the high-pressure air generated by the compressor 161 can be supplied to the air chamber within the cylindrical member 120. Further, by communicating the air hose 168 and the flow path 167, air can be extracted from the air chamber in the cylindrical member 120 and released from the silencer 164 to the atmosphere.

Here, with reference to FIG. 8, the operation of sliding the piston 130 in the axial direction within the cylindrical member 120 by the pressure of air supplied from the pneumatic device 160 will be described. As shown in FIG. 8, the differential pressure between the earth water pressure P0 in the chamber 17 and the air pressure Px in the air chamber in the cylindrical member 120 causes the piston 130 to slide axially forward or backward within the cylindrical member 120. can be done.

For example, if high pressure air (P1) from the compressor 161 is supplied to the air chamber in the cylindrical member 120 so that Px=P1>P0, the high pressure air (Px) in the air chamber moves the piston 130 forward in the axial direction. The piston 130 can be slid (advanced) within the cylindrical member 120 by pressing the piston 130 . On the other hand, if the switching valve 163 is switched to remove air from the air chamber in the cylindrical member 120 and Px=Patm<P0, then the earth water pressure in the chamber 17 (P0) and the air pressure in the air chamber (Px) Due to the differential pressure, the piston 130 can be sucked axially rearward, and the piston 130 can be slid (retracted) axially rearward within the cylindrical member 120 .

Furthermore, in the pneumatic device 160 shown in FIG. 8, a vacuum pump (negative pressure generating pump) may be installed in place of the silencer 164. Thereby, negative pressure (Px) can be generated in the air chamber in the casing 140 using the vacuum pump, and Px<Patm<P0. Therefore, since the piston 130 can be attracted with a stronger suction force, it becomes possible to more reliably slide (retreat) the piston 130 rearward in the axial direction.

Next, with reference to FIGS. 7A to 7D, a sampling operation of excavated soil by the soil sampling device 100 according to the fourth embodiment will be described.

First, in the standby state shown in FIG. 7A, the on-off valve 110 attached to the casing 140 is in a closed state. A cylindrical member 120 and a piston 130 are installed inside the casing 140. In this standby state, high-pressure air is supplied in advance to the air chamber in the cylindrical member 120 through the air hose 168 by the pneumatic device 160 (sliding mechanism). As a result, the piston 130 slides axially forward within the cylindrical member 120 and is pushed out to a position where it abuts the front stopper 123.

Next, when starting the sediment sampling operation, first, as shown in FIG. 7B, after opening the on-off valve 110, the telescopic rod 151 of the jack 150 (insertion/extraction mechanism) is extended to move the cylindrical member 120 in the axial direction. push forward. As a result, the cylindrical member 120 moves forward through the movement passage within the casing 140, passes through the on-off valve 110, and is inserted into the chamber 17 through the opening 13b of the partition wall 13. During this insertion, the insertion stroke L2 of the cylindrical member 120 is adjusted so that the front end opening 121 of the cylindrical member 120 inserted into the chamber 17 is located at a desired sampling position within the chamber 17.

Thereafter, as shown in FIG. 7C, air is removed from the air chamber in the cylindrical member 120 through the air hose 168 by the pneumatic device 160 (sliding mechanism), and the piston 130 is sucked rearward in the axial direction. As a result, the piston 130 is slid axially rearward within the cylindrical member 120 and drawn into the rear end side of the cylindrical member 120. Due to the suction force caused by the retraction of the piston 130, the excavated earth and sand in the chamber 17 is taken into the interior of the cylindrical member 120 through the front end opening 121 of the cylindrical member 120, and the interior of the cylindrical member 120 is filled. The piston 130 that has been drawn into the rear end of the cylindrical member 120 is locked by the rear end of the cylindrical member 120, and is restricted from retreating beyond the sliding stroke L1.

Next, as shown in FIG. 7D, the telescopic rod 151 of the jack 150 (insertion/extraction mechanism) is contracted to pull back the cylindrical member 120. As a result, the cylindrical member 120 moves backward along the movement path in the casing 140, passes through the on-off valve 110, is extracted from the chamber 17 into the body, and is retreated into the casing 140. When the rear end of the cylindrical member 120 comes into contact with the rear end of the casing 140, the jack 150 stops contracting, the on-off valve 110 is closed, and the valve body 112 opens the inner space of the casing 140 ( the movement path of the cylindrical member 120).

As described above, the cylindrical member 120 that has taken in the excavated earth and sand in the chamber 17 can be recovered into the body behind the partition wall 13. Thereafter, the cylindrical member 120 that has taken in the excavated earth and sand is removed from the casing 140 together with the piston 130 inside the machine. Then, by taking out the excavated earth and sand from inside the cylindrical member 120, sampling of the excavated earth and sand is completed.

In the suction process shown in FIG. 7C, for example, when the piston 130 and the cylindrical member 120 are fixed to each other, the piston 130 and the cylindrical member 120 cannot be retracted by the suction force of the air of the pneumatic device 160 alone. It is conceivable that there may be cases where it is difficult to do so. In this case, similarly to the third embodiment, a wire 170 and a winding device 172 (see FIG. 5) are used as auxiliary devices for the pneumatic device 160 (power applying device) to move the piston 130 backward. You can also tow it back.

The sediment sampling method using the sediment sampling device 100 according to the fourth embodiment has been described above. According to the fourth embodiment, a jack 150 is used as an insertion/extraction mechanism for the cylindrical member 120, and a pneumatic device 160 is used as a sliding mechanism for the piston 130. As a result, the operation of sliding the piston 130 within the cylindrical member 120 and the operation of inserting and removing the cylindrical member 120 into and from the chamber 17 can be realized separately using two independent mechanisms (the jack 150 and the pneumatic device 160). . Therefore, the intended operation can be performed at the intended timing, and the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be performed reliably.

<3.2.2. Fifth embodiment>
Next, with reference to FIG. 9, a sediment sampling device 100 according to a fifth embodiment of the present invention will be described in detail. 9A to 9D are cross-sectional views showing the operation of the sediment sampling device 100 according to the fifth embodiment.

The sediment sampling device 100 according to the fifth embodiment (see FIGS. 9A to 9D) is different from the first embodiment (see FIGS. 2 and 3) in that a first jack 180 is provided as an insertion/extraction mechanism. The second embodiment is different in that a second jack 190 is provided as a sliding mechanism, and other components are the same as those in the first embodiment. Therefore, below, the combination structure of the first jack 180 (insertion/extraction mechanism) and the second jack 190 (sliding mechanism), which is a feature of the fifth embodiment, will be mainly explained, and other components will not be explained in detail. Omitted.

As shown in FIG. 9, in the fifth embodiment, the insertion/extraction mechanism for inserting/extracting the cylindrical member 120 into/from the chamber 17 includes a first jack 180 that is expandable/contractable in the axial direction of the cylindrical member 120. Further, a sliding mechanism for sliding the piston 130 within the cylindrical member 120 is also constituted by a second jack 190 that is extendable and retractable in the axial direction of the cylindrical member 120. Both the first jack 180 and the second jack 190 are configured, for example, by hydraulic jacks, but may be configured by other types of jacks. In this manner, in the fifth embodiment, two different jacks 180 and 190 are provided as power applying devices.

As shown in FIG. 9, a first jack 180 (insertion/extraction mechanism) according to the fifth embodiment is installed outside the casing 140. The second jack 190 (sliding mechanism) is installed inside the casing 140 and outside the cylindrical member 120. The casing 140 is formed to extend rearward, and has a space within the casing 140 that can accommodate the second jack 190 in addition to the cylindrical member 120. Further, the cylindrical member 120 is not provided with the front stopper 123 and the rear stopper 124 (see FIG. 3) as in the first embodiment, and the cylindrical member 120 is composed of a simple cylindrical body. . However, the rear end of the cylindrical member 120 is closed except for the rear end opening 122.

The first jack 180 includes a telescoping rod 181 that is expandable and retractable in the axial direction of the cylindrical member 120, and a jack body 182 that accommodates and supports the telescoping rod 181. Similarly, the second jack 190 includes a telescoping rod 191 that can be expanded and contracted in the axial direction of the cylindrical member 120, and a jack body 192 that accommodates and supports the telescoping rod 191.

The telescopic rod 181 of the first jack 180 (insertion/extraction mechanism) is inserted into the inside of the casing 140 through the rear end opening 142 formed through the rear end of the casing 140 . The telescopic rod 181 of the first jack 180 is inserted through the rear end opening 142 of the casing 140 and connected to the rear end of the jack body 192 of the second jack 190, and is connected to the casing 140 and the cylindrical member 120. It has not been.

A jack body 182 of the first jack 180 is disposed outside the casing 140 and at the rear of the casing 140. The front end of the jack body 182 is connected to and fixed to the rear end of the casing 140. The first jack 180 extends and contracts a telescoping rod 181 with respect to a jack body 182 fixed to the casing 140. By expanding and contracting the telescopic rod 181, the cylindrical member 120 can be slid in the axial direction together with the second jack 190 inside the casing 140. Thereby, the cylindrical member 120 can be inserted into and removed from the chamber 17.

In the example of FIG. 9, the telescopic rod 181 of the first jack 180 is connected to the jack body 192 of the second jack 190, and is not connected to the cylindrical member 120. However, the present invention is not limited to this example, and for example, the telescopic rod 181 of the first jack 180 may be directly connected to the cylindrical member 120. Even with such a connection structure, the first jack 180 can move the cylindrical member 120 forward and backward in the axial direction to insert it into and remove it from the chamber 17.

On the other hand, the telescopic rod 191 of the second jack 190 (sliding mechanism) is inserted into the inside of the cylindrical member 120 through the rear end opening 122 formed through the rear end of the cylindrical member 120. The telescopic rod 191 of the second jack 190 is inserted through the rear end opening 122 of the cylindrical member 120 and connected to the piston 130, but is not connected to the casing 140 or the cylindrical member 120.

A jack body 192 of the second jack 190 is arranged inside the casing 140 and behind the cylindrical member 120. The front end of the jack body 192 is connected to and fixed to the rear end of the cylindrical member 120, and the rear end of the jack body 192 is connected to the tip of the telescopic rod 181 of the first jack 180. ing. The second jack 190 extends and contracts a telescoping rod 191 with respect to a jack body 192 fixed to the cylindrical member 120 . By expanding and contracting the telescopic rod 191, the piston 130 can be slid in the axial direction inside the cylindrical member 120.

The sediment sampling device 100 having such a configuration moves the cylindrical member 120 axially forward together with the second jack 190 within the casing 140 by extending the first jack 180 (insertion/extraction mechanism), thereby opening the opening 13b of the partition wall 13. It can be inserted into the chamber 17 through. Further, by contracting the first jack 180, the cylindrical member 120 can be moved axially rearward together with the second jack 190, and can be removed from the chamber 17 through the opening 13b into the body.

Moreover, the sediment sampling device 100 can slide the piston 130 axially forward within the cylindrical member 120 by extending the second jack 190 (sliding mechanism). Furthermore, by contracting the second jack 190, the piston 130 can be slid axially rearward within the cylindrical member 120.

Next, with reference to FIGS. 9A to 9D, a sampling operation of excavated soil by the soil sampling device 100 according to the fifth embodiment will be described.

First, in the standby state shown in FIG. 9A, the on-off valve 110 attached to the casing 140 is in a closed state. A cylindrical member 120 and a piston 130 are installed inside the casing 140. Note that in this standby state, the piston 130 is previously slid axially forward within the cylindrical member 120 by the second jack 190 (sliding mechanism) and pushed out to a position where it abuts the front stopper 123. There is.

Next, when starting the sediment sampling operation, first, as shown in FIG. 9B, after opening the on-off valve 110, the telescopic rod 181 of the first jack 180 (insertion/extraction mechanism) is extended, and the second jack 190 and The cylindrical member 120 is pushed forward in the axial direction. As a result, the cylindrical member 120 moves forward through the movement passage within the casing 140, passes through the on-off valve 110, and is inserted into the chamber 17 through the opening 13b of the partition wall 13. During this insertion, the insertion stroke L2 of the cylindrical member 120 is adjusted so that the front end opening 121 of the cylindrical member 120 inserted into the chamber 17 is located at a desired sampling position within the chamber 17.

Thereafter, as shown in FIG. 9C, by contracting the telescopic rod 191 of the second jack 190 (sliding mechanism), the piston 130 is slid axially rearward within the cylindrical member 120. Pull it toward the inner rear end. Due to the suction force caused by the retraction of the piston 130, the excavated earth and sand in the chamber 17 is taken into the interior of the cylindrical member 120 through the front end opening 121 of the cylindrical member 120, and the interior of the cylindrical member 120 is filled. The piston 130 that has been drawn into the rear end of the cylindrical member 120 is locked by the rear end of the cylindrical member 120, and therefore is restricted from retreating beyond the sliding stroke L1.

Next, as shown in FIG. 9D, the telescopic rod 181 of the first jack 180 (insertion/extraction mechanism) is contracted, and the cylindrical member 120 is pulled back together with the second jack 190. As a result, the cylindrical member 120 moves backward along the movement path in the casing 140, passes through the on-off valve 110, is extracted from the chamber 17 into the body, and is retreated into the casing 140. When the rear end of the cylindrical member 120 comes into contact with the rear end of the casing 140, the contraction of the first jack 180 is stopped, the on-off valve 110 is closed, and the valve body 112 opens the inside of the casing 140. The space (movement path of the cylindrical member 120) is blocked.

As described above, the cylindrical member 120 that has taken in the excavated earth and sand in the chamber 17 can be recovered into the body behind the partition wall 13. Thereafter, the cylindrical member 120 that has taken in the excavated earth and sand is removed from the casing 140 together with the piston 130 inside the machine. Then, by taking out the excavated earth and sand from inside the cylindrical member 120, sampling of the excavated earth and sand is completed.

The sediment sampling method using the sediment sampling device 100 according to the fifth embodiment has been described above. According to the fifth embodiment, the first jack 180 is used as the insertion/extraction mechanism for the cylindrical member 120, and the second jack 190 is used as the sliding mechanism for the piston 130. As a result, the operation of sliding the piston 130 within the cylindrical member 120 and the operation of inserting and removing the cylindrical member 120 into and from the chamber 17 are performed separately by two independent mechanisms (the first jack 180 and the second jack 190). realizable. Therefore, the intended operation can be performed at the intended timing, and the insertion/removal operation of the cylindrical member 120 and the sliding operation of the piston 130 can be performed reliably.

Further, by using the jacks 180 and 190 with large output as the power applying device, it is possible to realize reliable operation (insertion/extraction operation, sliding operation) of the power applying device compared to the pneumatic device 160 described above.

<3.2.3. Sixth embodiment>
Next, with reference to FIG. 10, a sediment sampling device 100 according to a sixth embodiment of the present invention will be described in detail. 10A to 10C are cross-sectional views showing the operation of the sediment sampling device 100 according to the sixth embodiment.

The sediment sampling device 100 according to the sixth embodiment (see FIGS. 10A to 10C) differs from the first embodiment (see FIGS. 2 and 3) in that it has a first insertion/extraction mechanism and a sliding mechanism. The difference is that a hydraulic mechanism 210 and a second hydraulic mechanism 220 are provided, and other components are the same as in the first embodiment. Therefore, below, the combination of the first hydraulic mechanism 210 and the second hydraulic mechanism 220 (insertion/extraction mechanism and sliding mechanism), which is a feature of the sixth embodiment, will be mainly explained, and other components will not be explained in detail. Omitted.

As shown in FIG. 10, in the sixth embodiment, the insertion/extraction mechanism for inserting/extracting the cylindrical member 120 into/from the chamber 17 is configured by a combination of a first hydraulic mechanism 210 and a second hydraulic mechanism 220. On the other hand, the sliding mechanism for sliding the piston 130 within the cylindrical member 120 is also configured by a combination of the first hydraulic mechanism 210 and the second hydraulic mechanism 220. As described above, in the sixth embodiment, two hydraulic moving mechanisms, the first hydraulic mechanism 210 and the second hydraulic mechanism 220, are used as the power applying device that applies the power for moving the cylindrical member 120 and the piston 130. A mechanism is provided.

Below, the configurations of the first hydraulic mechanism 210 and the second hydraulic mechanism 220 according to the sixth embodiment, and the cylindrical member 120, piston 130, and casing 140 corresponding to the first hydraulic mechanism 210 and the second hydraulic mechanism 220 will be described. The configuration of the following will be explained in detail.

As shown in FIG. 10, the sediment sampling device 100 according to the sixth embodiment includes a casing 140 that is attached around the opening 13b of the partition wall 13 and houses the cylindrical member 120. A central wall 143 is provided at the axial center of the casing 140 . The interior space of the casing 140 is divided into a front interior space 144 and a rear interior space 145 by this central wall 143 .

The front internal space 144 of the casing 140 is an internal space provided on the front side of the casing 140. The front internal space 144 communicates with the opening 13b of the partition wall 13 and forms a movement passage for the cylindrical member 120. The front side of the front internal space 144 is open and communicates with the chamber 17. The moving passage on the front side of the front internal space 144 can be opened and closed by the on-off valve 110. The cylindrical member 120 is arranged in the front internal space 144. The cylindrical member 120 is provided within the casing 140 so as to be slidable in the front internal space 144 in the axial direction.

Further, an oil supply port 146 is formed through the casing 140 near the rear end of the front internal space 144 . A space on the rear side of the cylindrical member 120 (that is, a space between the rear end of the cylindrical member 120 and the center wall 143) in the front internal space 144 in the casing 140 is provided with a second hydraulic mechanism 220, which will be described later. , oil is supplied through the oil supply port 146. The rear space (rear oil chamber) of the front internal space 144 is filled with oil.

The cylindrical member 120 is movable forward within the front internal space 144 by the hydraulic pressure of oil supplied from the second hydraulic mechanism 220 to the rear oil chamber of the front internal space 144 . The front internal space 144 of the casing 140 functions as a cylinder that accommodates the cylindrical member 120 that is moved by the hydraulic pressure. A seal member (not shown) is attached to the outer peripheral surface of the rear portion of the cylindrical member 120. Further, a sealing member (not shown) is also attached to the front inner peripheral surface of the front internal space 144 of the casing 140. These seal members block the gap between the cylindrical member 120 and the casing 140 and prevent oil from leaking from the rear oil chamber of the front internal space 144 through the gap.

The rear internal space 145 of the casing 140 is an internal space provided on the rear side of the casing 140, and is a sealed space. Oil supply ports 147 and 148 are formed through the casing 140 near the front and rear ends of the rear internal space 145, respectively. Oil is supplied to the rear internal space 145 through oil supply ports 147 and 148 by a first hydraulic mechanism 210, which will be described later. The rear internal space 145 is filled with oil.

A movable member 230 is arranged in the rear internal space 145. The movable member 230 is provided so as to be slidable in the rear internal space 145 in the axial direction. The rear internal space 145 is divided into two spaces (a front oil chamber and a rear oil chamber) by the movable member 230. The movable member 230 functions as a piston that moves back and forth within the rear internal space 145 by the hydraulic pressure of oil supplied from the first hydraulic mechanism 210. Further, the rear internal space 145 of the casing 140 functions as a cylinder that accommodates the movable member 230 as the piston. A seal member (not shown) is attached to the outer peripheral surface of the movable member 230. The sealing member blocks a gap between the movable member 230 and the casing 140 and prevents oil from leaking between the front oil chamber and the rear oil chamber of the rear internal space 145.

Movable member 230 is connected to piston 130 via shaft member 240. The shaft member 240 is a connecting member that connects the piston 130 and the movable member 230. The shaft member 240 is arranged to extend in the axial direction from the front internal space 144 to the rear internal space 145 of the casing 140, and passes through a through hole formed in the central wall 143. Further, the shaft member 240 is inserted through the rear end opening 122 of the cylindrical member 120 disposed within the front internal space 144 of the casing 140. The shaft member 240 is not connected to the casing 140 or the cylindrical member 120, but is connected to the piston 130 disposed within the cylindrical member 120. For example, the front end of the shaft member 240 is connected to the back surface of the piston 130. On the other hand, the rear end of the shaft member 240 is connected to the front surface of the movable member 230 disposed within the rear internal space 145 of the casing 140.

By connecting the piston 130 and the movable member 230 through the shaft member 240, when the movable member 230 is moved back and forth within the rear internal space 145, the piston 130 is moved within the front internal space 144 in conjunction with this movement. It can be moved back and forth. In this way, the movable member 230, the shaft member 240, and the piston 130 move forward or backward in the axial direction within the casing 140 together.

The shaft member 240 is inserted into the through hole provided in the center wall 143 of the casing 140, and seal members (not shown) are provided on the front and rear sides of the inner peripheral surface of the through hole in the center wall 143, respectively. ) is installed. These seal members block the gap between the shaft member 240 and the center wall 143 and block the flow of oil between the rear oil chamber of the front internal space 144 and the front oil chamber of the rear internal space 145.

Furthermore, the air chamber 250 within the cylindrical member 120 is a sealed space on the rear side of the piston 130 in the internal space of the cylindrical member 120 . An air passage 252, an air passage 254, and an air intake/discharge port 256 are provided to circulate air between the air chamber 250 within the cylindrical member 120 and the external space of the casing 140. Air flow path 252 is formed inside piston 130 and shaft member 240. This air passage 252 communicates with an air passage 254. The air flow path 254 is formed along the shaft member 240 on the inner peripheral surface of the through hole in the center wall 143 of the casing 140 . This air passage 254 communicates with an air intake/discharge port 256 formed on the outside of the center wall 143 of the casing 140 .

Next, the first hydraulic mechanism 210 will be explained. The first hydraulic mechanism 210 is a hydraulic moving mechanism that uses hydraulic pressure to move the movable member 230 in the axial direction in the rear internal space 145 within the casing 140. The first hydraulic mechanism 210 is capable of supplying and discharging oil to and from the rear internal space 145 of the casing 140 .

As shown in FIG. 10, the first hydraulic mechanism 210 includes a pump 211 operated by an electric motor, a tank 212 for storing oil, a switching valve 213, and flow paths 214, 215, 216, and 217. Furthermore, the above-described casing 140, movable member 230, shaft member 240, rear internal space 145, and oil supply ports 147 and 148 are also examples of the components of the first hydraulic mechanism 210.

Pump 211 is connected to switching valve 213 via flow path 214. Pump 211 sends oil stored in tank 212 to switching valve 213 via flow path 214. The switching valve 213 is connected to the oil supply port 148 of the casing 140 via a flow path 216, and is connected to the oil supply port 147 of the casing 140 via a flow path 217. The switching valve 213 switches the communication state between the flow paths 214 and 215 and the flow paths 216 and 217.

The switching operation of the switching valve 213 causes the flow path 214 and the flow path 216 to communicate with each other, thereby supplying the oil sent from the pump 211 to the rear oil chamber of the rear internal space 145 through the oil supply port 148 of the casing 140. can do. At the same time, by communicating the flow path 215 and the flow path 217 with the switching valve 213, the oil in the front oil chamber of the rear internal space 145 is discharged from the oil supply port 147 of the casing 140, and the flow path 217 and the flow path It can be collected into tank 212 via channel 215. Due to these switching operations, the oil pressure in the rear oil chamber of the rear internal space 145 becomes higher than the oil pressure in the front oil chamber, so that the movable member 230 can be pushed and moved axially forward within the rear internal space 145. As a result, the piston 130 connected to the movable member 230 via the shaft member 240 can be moved forward together with the movable member 230.

In addition, by switching the switching valve 213, as shown in FIG. It can be supplied to the front oil chamber of the space 145. At the same time, by communicating the flow path 215 and the flow path 216 with the switching valve 213, the oil in the rear oil chamber of the rear internal space 145 is discharged from the oil supply port 148 of the casing 140, and the flow path 216 and the flow path It can be collected into tank 212 via channel 215. As a result, the oil pressure in the front oil chamber of the rear internal space 145 is higher than the oil pressure in the rear oil chamber, so that the movable member 230 can be pushed and moved axially rearward within the rear internal space 145. As a result, the piston 130 connected to the movable member 230 via the shaft member 240 can be moved back together with the movable member 230.

In this way, the first hydraulic mechanism 210 moves the piston 130 forward in the axial direction via the movable member 230 and the shaft member 240 by supplying hydraulic pressure to the rear oil chamber of the rear internal space 145 of the casing 140. It can be moved (forward). In addition, the first hydraulic mechanism 210 moves the piston 130 axially rearward (backward) via the movable member 230 and the shaft member 240 by supplying hydraulic pressure to the front oil chamber of the rear internal space 145 of the casing 140. ), the cylindrical member 120 can also be retreated together with the piston 130, and the cylindrical member 120 can be removed from the chamber 17 into the body of the fuselage.

Next, the second hydraulic mechanism 220 will be explained. The second hydraulic mechanism 220 is a hydraulic moving mechanism that uses hydraulic pressure to move the cylindrical member 120 in the axial direction in the front internal space 144 within the casing 140. The second hydraulic mechanism 220 is capable of supplying and discharging oil to and from the front internal space 144 of the casing 140 .

As shown in FIG. 10, the second hydraulic mechanism 220 includes the pump 211, the tank 212, the switching valve 223, and flow paths 214, 215, 224, 225, and 226. Thus, in the example of FIG. 10, the second hydraulic mechanism 220 and the first hydraulic mechanism 210 share the same pump 211 and tank 212. However, the present invention is not limited to this example, and for example, a dedicated pump, tank, etc. for the second hydraulic mechanism 220 may be provided separately from the pump 211, tank 212, etc. of the first hydraulic mechanism 210. Note that the above-described casing 140, cylindrical member 120, front internal space 144, and oil supply port 146 are also examples of components of the second hydraulic mechanism 220.

Pump 211 is connected to switching valve 223 via channels 214 and 224. Pump 211 sends oil stored in tank 212 to switching valve 223 via channels 214 and 224. The switching valve 223 is connected to the oil supply port 146 of the casing 140 via a flow path 226. The switching valve 223 switches the communication state between the channels 224 and 225 and the channel 226.

By the switching operation of the switching valve 223, the flow path 224 and the flow path 226 are communicated with each other as shown in FIG. 144 rear oil chamber. As a result, the oil pressure in the rear oil chamber of the front internal space 144 becomes higher than the earth pressure in the chamber 17, so as shown in FIG. It can be inserted into 17.

In addition, by switching the switching valve 223, as shown in FIG. It can be discharged and collected into tank 212 through channel 226, channel 225, and channel 215. This reduces the oil pressure in the rear oil chamber of the front internal space 144, allowing the cylindrical member 120 to freely retreat. Therefore, as shown in FIG. 10C, when the movable member 230 is retreated by the first hydraulic mechanism 210, the piston 130 and the cylindrical member 120 can be smoothly retreated together with the movable member 230.

In this way, the second hydraulic mechanism 220 supplies hydraulic pressure to the space (rear oil chamber) on the rear side of the cylindrical member 120 in the front internal space 144 of the casing 140, thereby increasing the cylindrical member 120. can be moved axially forward and inserted into the chamber 17.

Next, with reference to FIGS. 10A to 10C, a sampling operation of excavated soil by the soil sampling device 100 according to the sixth embodiment will be described.

First, in a standby state (shown in the figure) before the sediment sampling operation, the on-off valve 110 attached to the casing 140 is in a closed state, and the valve body 112 opens the front internal space 144 of the casing 140 (i.e., (movement path of the cylindrical member 120) is blocked. The piston 130 is slid axially forward in the cylindrical member 120 (towards the chamber 17) by the first hydraulic mechanism 210 (sliding mechanism) and is pushed out to the front end position of the cylindrical member 120.

Next, the insertion operation of the cylindrical member 120 (switching operation from the state shown in FIG. 10A to the state shown in FIG. 10B) will be described.

When starting the sediment sampling operation, first, as shown in FIG. 10A, the on-off valve 110 is opened. Thereafter, oil is supplied to the rear oil chamber (the space between the rear end of the cylindrical member 120 and the center wall 143) of the front internal space 144 of the casing 140 by the second hydraulic mechanism 220 (insertion/extraction mechanism). Due to the hydraulic pressure of this oil, the cylindrical member 120 is pushed forward in the axial direction and moves forward, as shown in FIG. 10B. At this time, the piston 130 does not move as an absolute position, but since the cylindrical member 120 moves forward, the piston 130 slides relative to the advancing cylindrical member 120 and moves behind the cylindrical member 120. Move relative to the end. As a result, the cylindrical member 120 moves forward through the movement passage within the casing 140, passes through the on-off valve 110, and is inserted into the chamber 17 through the opening 13b of the partition wall 13. During this insertion, the insertion stroke of the cylindrical member 120 is adjusted so that the front end opening 121 of the cylindrical member 120 inserted into the chamber 17 is located at a desired sampling position within the chamber 17.

In this way, as shown in FIGS. 10A and 10B, the second hydraulic mechanism 220 (insertion/extraction mechanism) moves the cylindrical member 120 forward relative to the piston 130 to move the cylindrical member 120 into the chamber 17. Insert into. As a result, the excavated earth and sand in the chamber 17 is cut out by the cylindrical member 120 and taken into the cylindrical member 120 .

Here, the insertion operation of the cylindrical member 120 by the second hydraulic mechanism 220 as described above (switching operation from the state shown in FIG. 10A to the state shown in FIG. 10B) will be described in more detail.

When inserting the cylindrical member 120 into the chamber 17 from the state shown in FIG. 10A, as shown in FIG. 10B, the switching valve 223 of the second hydraulic mechanism 220 is switched by the solenoid valve command (SOLc) and connected to the pump 211. The flow path 224 connected to the oil supply port 146 is communicated with the flow path 226 connected to the oil supply port 146. As a result, oil from the pump 211 is supplied to the rear oil chamber of the front internal space 144 of the casing 140 through the flow path 224, the flow path 226, and the oil supply port 146, thereby increasing the oil pressure in the rear oil chamber. As a result, the hydraulic pressure acts on the back side of the cylindrical member 120, so that the cylindrical member 120 moves forward and is inserted into the chamber 17.

Note that in order to advance the cylindrical member 120 as described above, it is necessary to release the air in the air chamber 250 on the rear side of the piston 130 within the cylindrical member 120 to the outside. In this regard, in this embodiment, as described above, the air passage 252 is provided inside the piston 130 and the shaft member 240, and the air passage 254 and the air intake/exhaust port 256 are provided in the center wall 143 of the casing 140. There is. As a result, the air in the air chamber 250 is discharged to the outside from the air intake/discharge port 256 through the air flow path 252 and the air flow path 254. Therefore, the cylindrical member 120 can be smoothly advanced while discharging the air in the air chamber 250 to the outside.

Moreover, after the cylindrical member 120 is advanced, inserted into the chamber 17, and placed at a desired sampling position, it is preferable to fix the cylindrical member 120 so that it does not move back and forth unnecessarily. Therefore, although not shown, after inserting the cylindrical member 120, the above-mentioned solenoid valve command (SOLc) for the switching valve 223 of the second hydraulic mechanism 220 is turned off, the switching valve 223 is switched, and the oil supply port 146 is turned off. It is preferable that the flow path 226 connected to the pump 211 and the flow path 225 connected to the tank 212 be kept in a blocked state without being connected to the flow path 224 connected to the pump 211 or the flow path 225 connected to the tank 212. This fixes the cylindrical member 120 at the desired sampling position without applying hydraulic pressure to the cylindrical member 120 that has been inserted to the desired sampling position, thereby preventing unnecessary back and forth movement of the cylindrical member 120. can.

Next, the removal operation of the cylindrical member 120 (the switching operation from the state shown in FIG. 10B to the state shown in FIG. 10C) will be described.

After the insertion operation of the cylindrical member 120 as described above, as shown in FIG. The space between the front end of member 230 and central wall 143) is supplied with oil. Due to the hydraulic pressure of this oil, the movable member 230 slides axially rearward in the rear internal space 145 of the casing 140 and retreats. As a result, the piston 130 connected to the movable member 230 via the shaft member 240 also retreats in the front internal space 144, and the cylindrical member 120 locked by the piston 130 also retreats together with the piston 130. As a result, the cylindrical member 120 retreats through the movement passage in the front internal space 144 of the casing 140, passes through the on-off valve 110, is extracted from the chamber 17 into the fuselage body, and retreats into the front internal space 144 of the casing 140. be done.

Here, the removal operation of the cylindrical member 120 by the first hydraulic mechanism 210 as described above (switching operation from the state shown in FIG. 10B to the state shown in FIG. 10C) will be described in more detail.

When removing the cylindrical member 120 from the chamber 17 from the state shown in FIG. 10B, as shown in FIG. 10C, the switching valve 223 is switched by the electromagnetic valve command (SOLd) to the switching valve 223 of the second hydraulic mechanism 220. A flow path 226 connected to the oil supply port 146 and a flow path 225 connected to the tank 212 are made to communicate with each other. As a result, the oil pressure in the flow paths 225, 226 and the oil supply port 146 disappears, so that the oil pressure acting on the back surface of the cylindrical member 120 in the rear oil chamber of the front internal space 144 of the casing 140 decreases.

Next, as shown in FIG. 10C, the switching valve 213 of the first hydraulic mechanism 210 is switched by the solenoid valve command (SOLa) to connect the flow path 214 connected to the pump 211 and the flow path connected to the oil supply port 147. 217. As a result, oil from the pump 211 is supplied to the front oil chamber of the front internal space 144 of the casing 140 through the flow path 214, the flow path 217, and the oil supply port 147, thereby increasing the oil pressure in the front oil chamber. Further, a flow path 215 connected to the tank 212 and a flow path 216 connected to the oil supply port 148 are communicated with each other. As a result, the oil pressure in the flow paths 215, 216 and the oil supply port 148 disappears, so that the oil pressure acting on the back surface of the movable member 230 in the rear oil chamber of the rear internal space 145 of the casing 140 decreases. As a result, the hydraulic pressure acts on the front side of the movable member 230, so the movable member 230 moves backward. Then, in conjunction with the retreat of the movable member 230, the shaft member 240 and the piston 130 retreat, so the cylindrical member 120 locked to the piston 130 also retreats and is removed from the chamber 17.

Thereafter, when the rear end of the retreating cylindrical member 120 comes into contact with the center wall 143 of the casing 140, the oil supply by the first hydraulic mechanism 210 is stopped, the on-off valve 110 is closed, and the valve body 112 closes the casing. 140 (the movement path of the cylindrical member 120) is blocked. As a result, the earth pressure within the chamber 17 will not act on the cylindrical member 120 and the like within the casing 140.

As described above, the cylindrical member 120 that has taken in the excavated earth and sand in the chamber 17 can be recovered into the body behind the partition wall 13. Thereafter, inside the machine, the part of the sediment sampling device 100 that is inside the machine from the on-off valve 110 is separated. Then, by taking out the excavated earth and sand from inside the cylindrical member 120, sampling of the excavated earth and sand is completed.

Next, after the above sampling is completed, the piston 130 is advanced by the first hydraulic mechanism 210 to return to the standby state before sampling (switching operation from the state shown in FIG. 10C to the state shown in FIG. 10A) in more detail. Explain.

When the sampled excavated soil is collected as described above, there will be no excavated soil in the cylindrical member 120 in the arrangement of each part as shown in FIG. 10C. In this state, although not shown, the switching valve 213 of the first hydraulic mechanism 210 is switched by the solenoid valve command (SOLb) to connect the flow path 214 connected to the pump 211 and the flow path connected to the oil supply port 148. 216. As a result, oil from the pump 211 is supplied to the rear oil chamber of the front internal space 144 of the casing 140 through the flow path 214, the flow path 216, and the oil supply port 148, thereby increasing the oil pressure in the rear oil chamber. Further, the flow path 215 connected to the tank 212 and the flow path 217 connected to the oil supply port 147 are communicated with each other. As a result, the hydraulic pressure in the flow paths 215, 217 and the oil supply port 147 disappears, so that the hydraulic pressure acting on the front surface of the movable member 230 in the front oil chamber of the rear internal space 145 of the casing 140 decreases. As a result, the hydraulic pressure acts on the back side of the movable member 230, so the movable member 230 moves forward, and in conjunction with this, the shaft member 240 and the piston 130 also move forward. At this time, since no power acts on the cylindrical member 120, it does not move forward together with the piston 130. Therefore, the piston 130 slides axially forward within the cylindrical member 120 and advances to near the front end of the cylindrical member 120, as shown in FIG. 10A.

Note that when the piston 130 moves forward within the cylindrical member 120 as described above, an air chamber 250 is formed in the cylindrical member 120 on the rear side of the piston 130. At this time, air is supplied to the air chamber 250 of the cylindrical member 120 through the air intake/discharge port 256, the air passage 254, and the air passage 252 described above. Therefore, since the air chamber 250 is formed without any problem, the piston 130 can move smoothly inside the cylindrical member 120.

The sediment sampling method using the sediment sampling device 100 according to the sixth embodiment has been described above. The sediment sampling device 100 according to the sixth embodiment opens a movement passage communicating with the opening 13b of the partition wall 13 using the on-off valve 110, and moves the piston 130 in the axial direction within the cylindrical member 120 using the first hydraulic mechanism 210. By moving the cylindrical member 120 forward relative to the piston 130 by the second hydraulic mechanism 220 in the forwardly advanced state (see FIG. 10A), and inserting the cylindrical member 120 into the chamber 17, The excavated earth and sand in the chamber 17 is taken into the cylindrical member 120 (see FIG. 10B). Thereafter, by moving the piston 130 backward in the axial direction together with the movable member 230 by the first hydraulic mechanism 210, the cylindrical member 120 that has taken in the excavated soil is moved back together with the piston 130, and is removed from the chamber 17 into the machine body. (See Figure 10C).

According to this earth and sand sampling method, the excavated earth and sand at the sampling position in the chamber 17 can be cut out by the cylindrical member 120 and taken into the cylindrical member 120. Thereafter, the cylindrical member 120 that has taken in the excavated earth and sand and the piston 130 are collectively retreated, thereby completing sampling of the excavated earth and sand. With such a sampling method, the excavated earth and sand at a desired sampling position within the chamber 17 can be cut out as is and taken into the cylindrical member 120 without being moved in the front-back direction. Therefore, it is possible to suitably sample the excavated soil as it is at the desired sampling position within the chamber 17 without changing its properties.

In the example of the sixth embodiment, a combination of two hydraulic devices (the first hydraulic mechanism 210 and the second hydraulic mechanism 220 shown in FIG. 10) is used as the insertion/extraction mechanism of the cylindrical member 120 and the sliding mechanism of the piston 130. Although used herein, it may be replaced by, for example, a pneumatic device, an electric mechanical device, or any other type of driving means as long as it satisfies the same functions as those described above.

Here, a modification of the sixth embodiment will be described with reference to FIG. 11. FIG. 11 is a sectional view showing the configuration of a sediment sampling device 100 according to a modification of the sixth embodiment.

As shown in FIG. 11, this modified example is different from the sixth embodiment (see FIG. 10) in that the configurations of the casing 140 and the first hydraulic mechanism 210 are changed, and other changes are made. The components are the same as those in the sixth embodiment. Therefore, in the following, the casing 140 and the first hydraulic mechanism 210, which are the characteristics of this modification, will be described in detail, and the detailed description of the other components will be omitted.

The casing 140 (see FIG. 11) according to this modification example has the same peripheral configuration of the front internal space 144 as compared to the casing 140 (see FIG. 10) according to the sixth embodiment, but The surrounding configuration of the space 145 is different. As shown in FIG. 11, a bracket 149 is provided on the rear side of the casing 140 according to this modification. The bracket 149 is a support member having, for example, an L-shaped cross section, and has a function of supporting a hydraulic jack 260, which will be described later. A through hole 149b is formed in the rear wall 149a of the bracket 149. A shaft member 240 connected to the piston 130 is inserted through the through hole 149b.

The hydraulic jack 260 functions as a moving mechanism that moves the shaft member 240 connected to the piston 130 back and forth in the axial direction. The hydraulic jack 260 is provided as an alternative to the movable member 230 (see FIG. 10) of the first hydraulic mechanism 210 according to the sixth embodiment and its surrounding structure. The hydraulic jack 260 is a component that includes the movable member 230 described above. Hydraulic jack 260 is fixed to rear wall 149a of bracket 149. The telescoping rod of the hydraulic jack 260 is integrated with a shaft member 240 connected to the piston 130.

The hydraulic jack 260 is provided with the oil supply ports 147 and 148 of the first hydraulic mechanism 210 described above. These oil supply ports 147 and 148 are connected to the pump 211 and the tank 212 via the switching valve 213, flow paths 214 and 215, and flow paths 216 and 217 of the first hydraulic mechanism 210 described above. Oil sent from the pump 211 of the first hydraulic mechanism 210 is supplied into the hydraulic jack 260 through the oil supply ports 147 and 148. The hydraulic jack 260 uses this oil pressure to move the piston 130 forward or backward in the axial direction via the shaft member 240 based on the same principle as the movable member 230 of the sixth embodiment.

Here, as shown in FIG. 11, the bracket 149 according to the present modification example is, for example, a hollow member having an L-shaped cross section, so that the inside of the bracket 149 is an open space. Therefore, of the shaft member 240 inserted through the bracket 149 and the casing 140, the portion existing inside the bracket 149 is exposed to the atmosphere inside the fuselage. A rear end opening 252a of an air flow path 252 formed inside the shaft member 240 is arranged in the exposed portion of the shaft member 240. Therefore, the air flow path 252 is always in communication with the atmosphere inside the body while the sediment sampling device 100 is in operation. Therefore, air can be freely supplied to and discharged from the air chamber 250 within the cylindrical member 120 through the air passage 252.

The configuration of this modified example has been described above with reference to FIG. 11. According to this modification, the component including the movable member 230 of the first hydraulic mechanism 210 according to the sixth embodiment can be configured as the hydraulic jack 260, so the device configuration can be simplified. Further, by using a hollow bracket 149 instead of a block-shaped member such as the center wall 143 (see FIG. 10) of the casing 140 according to the sixth embodiment, the weight of the casing 140 can be reduced. can. Furthermore, since the flow path structures such as the air flow path 254 and the air supply/discharge port 256 (see FIG. 10) provided in the center wall 143 of the casing 140 according to the sixth embodiment are no longer required, the device configuration can be changed. Can be simplified.

As described above, according to this modification example, the device configuration can be simplified and lightened compared to the sixth embodiment, while in terms of functions such as the insertion/extraction mechanism of the cylindrical member 120 and the sliding function of the piston 130, Functions similar to those of the sixth embodiment described above can be exhibited.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the embodiments described above, and various modifications within the scope of the claims are possible. It goes without saying that modifications or modifications also fall within the technical scope of the present invention.

For example, in the above embodiment, the earth pressure type (including mud pressure type) tunnel excavation machine 1 has been described, but the tunnel excavation machine according to the present invention may be a mud water type tunnel excavation machine.

In addition, in the sediment sampling device 100 according to the above embodiment, the entrance and exit of the cylindrical member 120 to the chamber 17 is the front end opening 141 of the casing 140, and the front end opening 141 is arranged to match the position of the opening 13b of the partition wall 13. The cylindrical member 120 was configured to be inserted into the chamber 17 through the front end opening 141 (the entrance/exit of the cylindrical member 120). However, the present invention is not limited to such an example, and for example, the entrance and exit of the cylindrical member 120 to the chamber 17 is provided at the tip of a fixed wing (not shown) provided in the partition wall 13, and the inside of the fixed wing is A passage for movement of the cylindrical member 120 may be formed through the cylindrical member 120 . Thereby, the cylindrical member 120 can be inserted into or removed from the chamber 17 through the opening at the tip of the fixed wing (the entrance/exit of the cylindrical member 120).

Here, the fixed blade and the stirring blade are members used to stir the excavated earth and sand in the chamber 17. The fixed wing is fixed to the front surface of the bulkhead 13 and is arranged to protrude forward from the bulkhead 13. The stirring blade is arranged to protrude rearward from the back surface of the cutter head 11 and rotates integrally with the cutter head 11. By providing the moving passage and the entrance/exit for the cylindrical member 120 in the fixed wing, the cylindrical member 120 can be inserted into or removed from the chamber 17 from the tip of the fixed wing (the entrance/exit of the cylindrical member 120). With this configuration, by changing the length of the fixed blade, it is possible to change the position at which excavated earth and sand in the chamber 17 is sampled by the cylindrical member 120. For example, by making the fixed blades longer, it is possible to sample the excavated earth and sand at the back of the cutter head 11, and by making the fixed blades shorter, it is possible to sample the excavated earth and sand near the partition wall 13. Therefore, the degree of freedom of the sampling position within the chamber 17 can be improved.

Further, in the above, each component of the tunnel excavating machine 1 has been explained with reference to the drawings, but the dimensions and positional relationship of each component in the drawings are merely an example, so each component of the tunnel excavating machine 1 The dimensions and positional relationships are not limited to the examples shown in the drawings. Moreover, components may be added, deleted, or changed as appropriate to the tunnel excavating machine 1 illustrated in the drawings.

1 Tunnel excavator 10 Excavator main body 11 Cutter head 12 Cutter rotating shaft 13 Partition wall 13a Discharge port 13b Opening 17 Chamber 18 Screw conveyor 19 Shield jack 100 Sediment sampling device 110 Opening/closing valve 120 Cylindrical member 121 Front end opening 122 Rear end opening 123 Front Stopper 124 Rear stopper 130 Piston 140 Casing 141 Front end opening 142 Rear end opening 143 Center wall 144 Front internal space 145 Rear internal space 149 Bracket 150 Jack 151 Telescopic rod 152 Jack main body 160 Pneumatic device 170 Wire 172 Winding device 180 First jack 190 Second jack 210 First hydraulic mechanism 220 Second hydraulic mechanism 230 Movable member 240 Shaft member 250 Air chamber 260 Hydraulic jack S Segment T Tunnel

Claims (9)

A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism and the sliding mechanism are configured with a common movement mechanism,
The common movement mechanism is
a power applying device that applies power to the piston to move the piston in the axial direction of the cylindrical member inside the cylindrical member;
a locking member for moving the cylindrical member in the axial direction of the cylindrical member together with the piston;
has
The common moving mechanism is configured to move the cylindrical member together with the piston in the axial direction by applying the power from the power applying device to the piston that is locked by the locking member. and functions as the insertion/extraction mechanism of the cylindrical member;
tunnel boring machine. In the sediment sampling device, the opening of the partition wall or the moving passage is opened by the on-off valve, and the piston is moved by the sliding mechanism with the cylindrical member inserted into the chamber by the insertion/extraction mechanism. The tunnel excavator according to claim 1, wherein earth and sand in the chamber is taken into the interior of the cylindrical member by sliding the cylindrical member axially rearward. The locking member is
a front stopper provided on the front end side of the cylindrical member and capable of locking the piston slid on the front end side of the cylindrical member;
a rear stopper provided on the rear end side of the cylindrical member and capable of locking the piston slid on the rear end side of the cylindrical member;
The tunnel boring machine according to claim 1 , comprising: The power imparting device includes a jack that is extendable and retractable in the axial direction of the cylindrical member,
The tunnel excavator according to claim 1 or 3 , wherein the jack is connected to the piston through a rear end opening of the cylindrical member, and is not connected to the cylindrical member. The sediment sampling device includes:
further comprising a casing attached to the partition wall and accommodating the cylindrical member,
The internal space of the casing communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
The tunnel excavator according to claim 1 or 3 , wherein the power applying device includes a pneumatic device capable of supplying and suctioning air to an internal space of the casing on the rear side of the cylindrical member. The sediment sampling device includes:
further comprising a casing attached to the partition wall and accommodating the cylindrical member,
The internal space of the casing communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
The power imparting device includes:
a pneumatic device capable of supplying air to an internal space of the casing on the rear side of the cylindrical member;
a wire connected to the piston through a rear end opening of the cylindrical member;
a winding device that winds up the wire;
The tunnel boring machine according to claim 1 or 3 , comprising: A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism includes a jack that is extendable and retractable in the axial direction of the cylindrical member,
The jack is connected to the cylindrical member,
The rear end side of the cylindrical member is closed,
The sliding mechanism includes a pneumatic device capable of supplying and suctioning air to an internal space of the cylindrical member on the rear side of the piston. A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The insertion/extraction mechanism includes a first jack that is extendable and retractable in the axial direction of the cylindrical member,
The sliding mechanism includes a second jack that is extendable and retractable in the axial direction of the cylindrical member,
The telescoping rod of the second jack is connected to the piston and not connected to the cylindrical member,
The main body of the second jack is connected to the cylindrical member,
The tunnel excavator, wherein the telescopic rod of the first jack is connected to the main body of the second jack or the cylindrical member. A cylindrical excavator body,
a cutter head rotatably provided at the front end of the excavator body;
a partition wall disposed behind the cutter head in the axial direction of the excavator main body and spaced apart from the cutter head in the axial direction;
a chamber that is a space defined between the cutter head and the partition wall;
Equipped with
The partition wall is provided with a sediment sampling device,
The sediment sampling device includes:
a cylindrical member that is provided inside the excavator body on the rear side of the bulkhead and located at a position facing an opening formed in the bulkhead;
a piston provided inside the cylindrical member;
By moving the cylindrical member in the axial direction of the cylindrical member, the cylindrical member is inserted into the chamber from the body through the opening, and the cylindrical member is inserted from within the chamber through the opening. An insertion/extraction mechanism for removing the material into the aircraft body;
a sliding mechanism that slides the piston in the axial direction of the cylindrical member inside the cylindrical member;
an on-off valve that can open and close the opening of the partition wall or the movement passage of the cylindrical member that communicates with the opening;
has
The sediment sampling device is configured to perform the insertion and removal in a state in which the opening of the partition wall or the movement passage is opened by the on-off valve, and the piston is advanced axially forward within the cylindrical member by the sliding mechanism. By moving the cylindrical member forward relative to the piston by a mechanism and inserting the cylindrical member into the chamber, dirt in the chamber is taken into the cylindrical member,
further comprising a casing attached to the partition wall and accommodating the cylindrical member,
The internal space of the casing is divided into a front internal space in which the cylindrical member is arranged and a rear internal space,
The front internal space communicates with the opening of the partition wall and forms the movement passage of the cylindrical member,
A movable member is disposed in the rear internal space so as to be slidable in the axial direction in the rear internal space, and the movable member is connected to the piston via a shaft member,
The insertion/extraction mechanism and the sliding mechanism are
a first hydraulic mechanism that moves the piston in the axial direction of the cylindrical member via the movable member and the shaft member by supplying hydraulic pressure to the rear internal space of the casing;
a second hydraulic mechanism that moves the cylindrical member forward in the axial direction by supplying hydraulic pressure to a space on the rear side of the cylindrical member in the front internal space of the casing;
A tunnel boring machine consisting of.

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