JP6355574B2 - Hanging tool - Google Patents

Description

The present invention relates to a lifting tool that allows a lifting object to be detachably connected to a wire of a lifting device such as a crane so that a lifting object can be lifted by the lifting device.

In general, when an operation of lifting a lifting object with a crane and moving it to a desired place is performed, first, the lifting object is detachably connected to a wire provided on the crane using a lifting tool. In that state, by winding the wire, lifting the lifting object, moving it to the desired location and placing it, then releasing the connection between the lifting object and the wire by the lifting tool and separating them A series of moving work of the lifting object is completed.

Various types of lifting devices that detachably connect a lifting object and a wire have been developed according to the lifting object. For example, Patent Document 1 discloses a neck coupler 2 (hanging tool) configured to be able to stand up and lift a long roll 10 (a lifting object) extending in the horizontal direction.
Is disclosed. The neck connector 2 is configured to be able to lift a roll 10 having a lifting tool through hole 12 in the roll neck portion 11, and is configured to receive the roll neck portion 11 and to be rotatably inserted. A jig 6, a pin 3 for connecting the neck insertion jig 6 to the roll neck portion 11, and a pin attaching / detaching mechanism 5 for inserting and removing the pin 3 by the rotation of the rotary hook 1 are configured.

When the horizontally extending roll 10 is lifted by using the neck coupler 2, as shown in FIG. 3, first, the roll neck portion 11 is inserted into the inside using the rotation of the neck insertion jig 6. In this state, the neck hook 2 is connected to the roll 10 by rotating the rotary hook 1 and passing the pin 3 through the lifting tool through hole 12 by the pin attaching / detaching mechanism 5. And the roll 10 extended in a horizontal direction by raising the neck coupler 2 in this state
Can be lifted up. In addition, the neck coupler 2 can be removed from the roll 10 by performing the above-described operation for coupling the neck coupler 2 to the roll 10 in the reverse procedure.

Japanese Patent No. 5228764

However, in the neck coupler 2 of Patent Document 1, the rotary hook 1 is rotated and the pin 3 is inserted and removed by the pin attaching / detaching mechanism 5 to connect and release the roll 10 and the neck coupler 2. In addition, there is a problem that the configuration for performing the connection and release is complicated. In particular, the pin attaching / detaching mechanism 5 may be deformed and broken when a force or impact is applied from the outside, and the neck coupler 2 may not be connected to the roll 10 or may not be released. There is also a problem that there is.

The present invention has been made in view of such a problem, and provides a lifting device configured to be able to stand up and lift a long lifting object while having a simple configuration. With the goal.

In order to achieve the above object, a lifting tool according to the present invention includes an object-side lifting tool provided on a lifting object (for example, the excavating apparatus T in the embodiment) and a lifting apparatus (for example, a carrier device in the embodiment). 121) (for example, a wire (wire rope) W in the embodiment, a rope configured by twisting chemical fibers, a rope configured by twisting natural fibers, etc.) A line-side hanger (for example, the wire-side hanger 30 in the embodiment) removably coupled to the object-side hanger, and the hanger by connecting the line-side hanger to the object-side hanger. A lifting tool that connects an upper object and the line-shaped member and allows the lifting object to be lifted by the lifting device, wherein the line-side hanging tool is the line-shaped member. Connected to a line mounting part to be attached (for example, the hanging ring part 31 in the embodiment), an intermediate part (for example, the straight part 32a in the embodiment) that extends downward from the line mounting part, and a lower part of the intermediate part. A line-side engaging portion (for example, the engaged tapered portion 32b in the embodiment) formed to have a larger diameter than the intermediate portion, and the object-side suspension has an insertion / extraction space penetrating vertically. A receiving member; and a rotating member rotatably attached to the receiving member, wherein the rotating member communicates with the insertion / extraction space at a predetermined rotational position and has an engaging space penetrating vertically. the ingredients, together with the line-side engaging portion is projected downward from the insertion space to the intermediate portion is positioned in the insertion space, insertable from above into the insertion space, and The intermediate portion positioned in the insertion / extraction space can be moved laterally into the engagement space in a state where the rotating member is positioned at the predetermined rotation position, and the intermediate portion is in the engagement When the line side engaging portion is moved up from a state of moving into the space, the line side engaging portion is configured to vertically engage with the rotating member in the engaging space, and the line side In the state where the engaging portion is engaged with the rotating member in the up-and-down direction within the engaging space, the object-side suspension and the line-side suspension are connected, and the suspension object is suspended by the suspension device. The line-side hanger can be rotated with respect to the receiving member integrally with the rotating member.

In the above-described hanger, the line-side engagement portion is formed in a substantially conical shape with a diameter increasing downward, and the engagement space is directed downward corresponding to the outer shape of the line-side engagement portion. And the line-side engaging portion is in contact with the inner surface of the engaging space having a substantially conical shape (for example, the engaging taper portion 21c in the embodiment). It is preferable to be configured to engage with the top and bottom.

Further, each of the receiving member and the rotating member includes a rotation restricting portion that faces the rotating direction of the rotating member, and the rotation restricting portion of the receiving member (for example, the rotation restricting protrusion 13e in the embodiment) and the rotating member. Rotation regulating portions (for example, upper end surfaces 21e, 21 in the embodiment)
A configuration in which the rotation of the rotating member exceeding a predetermined rotation range including the predetermined rotation position is regulated by contacting with f) is preferable.

In the hanging device according to the present invention, the line side hanging portion of the line side hanging device is vertically engaged with the rotating member in the engaging space of the rotating member constituting the object side hanging device. It is configured to be rotatable integrally with the rotating member. For this reason, when lifting the lifting object, the rotating member rotates so as to absorb the change in the angle formed by the lifting object and the line-side hanging tool, so that the line-side hanging tool extends substantially vertically. Since it is maintained, it is possible to erect and elongate a long lifting object. Here, since the line side engaging part of the line side hanger is vertically engaged in the engagement space and the line side hanger is connected to the object side hanger, the line side hanger and the object A suspension device that can simplify and simplify the connecting structure of the side suspension device can be configured.

In the above-described hanger, the line side engaging portion is formed in a substantially conical shape, the engaging space is formed in a substantially conical shape, and the line side engaging portion is in contact with the inner surface of the substantially conical shaped engaging space. An engaging configuration is preferred. If the line side engaging portion and the rotating member (engaging space) are configured in this way, it is possible to provide an engaging structure that can be engaged vertically while being simple and simple. Moreover, since it is a simple and simple engagement structure, it can be set as the structure with few failures and excellent durability and operation reliability.

Moreover, the structure which controls rotation of the rotation member exceeding the predetermined rotation range including a predetermined rotation position by contact | abutting the rotation control part of a receiving member and a rotation member is preferable. For example, if the predetermined rotation range is set to a rotation range when lifting and transporting and placing a lifting object, a rotation range that is not necessary when lifting and transporting (a rotation range exceeding the predetermined rotation range)
The rotation of the rotating member can be restricted.

It is a side view which shows the lifting target object lifted using the lifting tool which concerns on this invention, and the lifting target object before lifting. It is a figure which shows the object side hanging tool which comprises the said hanging tool, (a) is a side view, (b) is a top view, (c) is a front view. It is a figure which shows the receiving member which comprises the said object side hanging tool, (a) is a side view, (b) is a top view, (c) is a front view, (d) is a bottom view. It is sectional drawing which shows the IV-IV part in FIG. It is a figure which shows the rotating member which comprises the said object side hanging tool, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is IV shown in FIG. 4 (a). It is the side view (partial sectional view) seen from the direction of (d) -IV (d). It is a side view of the wire side hanger which comprises the said hanger, (a) is a side view of a wire side hanger alone, (b) is a side view in the state received by the rotating member, (c) is a rotating member It is a side view of the state engaged with. It is a longitudinal cross-sectional view which shows the main equipment of a pneumatic caisson method. It is a side view which shows the process of engaging a wire side hanger with an object side hanger, (a) is the state which located the insertion / extraction space below the wire side hanger, (b) is related in the insertion / extraction space. (C) is a state in which the engaging portion is received in the engaging space, (d) is a state in which the wire-side suspension is engaged with the rotating member, and (e) is a state in which the wire is wound. (F) is a side view showing a state where the lifting object is lifted and (f) is a state where the lifting object is further away from the transport carriage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the outline | summary of the hanging tool 1 which concerns on this invention is demonstrated. In the following description, for convenience of explanation, front and rear, left and right, and up and down directions are defined in the directions of arrows attached to each drawing.

As shown in FIG. 1, the hoist 1 according to the present invention is attached to an object-side hoist 10 coupled to an excavator T and a wire W that is wound and unwound by a winch device of a crane (not shown). The wire-side hanger 30 is configured to be detachably connected to the object-side hanger 10. This hoisting tool 1 connects the wire-side hoisting tool 30 to the object-side hoisting tool 10 so that the wire W and the excavating equipment T can be detachably connected to enable lifting of the excavating equipment T by a crane. It is.

FIG. 1 shows an excavator T as a part of an excavator for carrying out excavation work of the ground by carrying it into the work room at the bottom of the caisson in the pneumatic caisson method as an example of the lifting object. The matic caisson method will be described later). The excavator T is connected to a main body device (not shown) to form an excavator, and is configured to perform excavation work on the ground with the excavator. The excavator T is configured to be stably placed in a horizontal state as shown on the lower side of FIG. However, since it has a shape that is long in the horizontal (left and right) direction in the horizontal state, the lifting tool 1 is configured so that it can be lifted and conveyed in the upright state as shown in the upper side of FIG. FIG. 1 shows a configuration in which the excavator T is placed and transported in a horizontally placed state on a self-propelled transport cart D. However, the excavator T can be placed on the ground as it is or in a storage place. Sometimes it is placed. Thus, in order to lift and convey in an upright state, the object-side hanger 10 is fixed to the side surface of the excavator T (the left side surface in the lower side of FIG. 1), and the wire-side hanger 30 is connected thereto. By winding the wire W, the horizontally placed excavating apparatus T can be raised and lifted as shown in the upper side of FIG.

Next, the configuration of the hanger 1 will be described. As shown in FIG.
A receiving member 11 formed in a substantially rectangular parallelepiped shape and coupled to the left side surface of the excavator T;
And a rotating member 20 accommodated therein.

In FIG. 3, the receiving member 11 which comprises the target object hanging tool 10 is shown. The receiving member 11 includes a front half member 11F and a rear half member 1 which are symmetrical with respect to a plane extending in the vertical and horizontal directions in FIG.
1B is combined. The receiving member 11 has a rectangular parallelepiped shape extending substantially left and right, and a cylindrical insertion / extraction space 12a penetrating vertically formed by semicylindrical recesses provided in opposing portions of the half members 11F and 11B. And a rotating member accommodating portion 13 having a rotating member accommodating space 13c that is formed coaxially with the half members 11F and 11B on the left side of the inserting / extracting portion 12 and is formed through the front and rear. . The rotating member 20 is accommodated and held in the rotating member accommodation space 13c. Chamfered portions 12b are formed at both upper and lower end portions of the insertion / extraction space 12a.

The rotating member accommodating portion 13 has an inner support portion 13 that forms a substantially cylindrical space extending in the front-rear direction.
a and outer support portions 13b and 13b that form a space having a smaller diameter than the inner support portion 13a and coaxially penetrating outward in the front-rear direction. These inner support part 13a and outer support part 13b
, 13b forms a rotating member accommodating space 13c penetrating in the front-rear direction. Furthermore, between the insertion / extraction space 12a and the rotating member accommodation space 13c, the two spaces 12a, 1 extend in the front-rear direction.
A slide movement space S that connects 3c and penetrates up and down is formed.

The upper part of the rotating member accommodating portion 13 is formed in a substantially arc shape along the inner peripheral surface of the inner support portion 13a in a front view (FIG. 3C), and the slide movement space S is formed in the substantially arc-shaped portion. The upper receiving space U having the same front-rear width and opening the rotating member housing space 13c upward and leftward is formed (see FIGS. 3A and 3C). Furthermore, a cylindrical lower receiving space L that is formed to penetrate downward from the rotating member accommodating space 13c is formed in the lower portion of the rotating member accommodating portion 13 (see FIG. 3D). A chamfered portion 13 d is formed at the lower end of the lower receiving space L.

As can be clearly understood from FIG. 4, rotation restricting protrusions 13e and 13e are formed on the front end and the rear end of the inner support portion 13a so as to stand inward in the front-rear direction and protrude into the rotation member housing space 13c. . A screw insertion hole 19 a and a female screw hole 19 b are formed in the right portion of the insertion / extraction portion 12 and the lower left portion of the rotating member housing portion 13 so as to penetrate in the front-rear direction. 3B is a cross-sectional view showing the screw insertion hole 19a and the female screw hole 19b formed in the right side portion of the insertion / extraction portion 12. FIG.

As shown in FIG. 5, the rotating member 20 has a main body portion 21 formed in a substantially columnar shape with the lower portion cut off and extending in the front-rear direction, and a smaller diameter than the main body portion 21 extending outward in the front-rear direction from the front and rear sides of the main body portion 21. And cylindrical support end portions 22 and 22. As shown in FIG. 5 (d), the main body portion 21 forms an upper straight portion 21b that forms a cylindrical space located in the upper portion, and a substantially conical space that is connected to the upper straight portion 21b and expands downward. Engaging taper part 2
1c and a lower straight portion 21d that forms a cylindrical space extending downward from the engagement taper portion 21c. The rotating member 20 is further formed with an engagement space 21a that opens in the right direction. The inner spaces of the upper straight portion 21b, the engagement taper portion 21c, and the lower straight portion 21d are connected to the engagement space 21a to the right. (See Figs. 5 (a) and 5 (c))
.

5B and 5C, receiving recesses 21E, 21E, 21F, and 21F that are recessed toward the front and rear inner sides are provided on the lower right side and lower left side of the front and rear end portions of the main body portion 21, respectively. . The scale of FIG. 5 is larger than the scale of FIGS. 3 and 4, and the rotating member 20 is shown enlarged to the receiving member 11 shown in FIGS. 3 and 4, but the rotating member 20 is described later.
Is a dimensional relationship in which the receiving member 11 is rotatably accommodated.

The object-side hanger 10 is configured by accommodating the rotation member 20 in the rotation member accommodation space 13 c of the receiving member 11. As described above, the receiving member 11 includes the front half member 11F and the rear half member 11.
Since B is formed by joining front and rear, the half member 11F and 11B are joined after the rotating member 20 is accommodated in the rotating member accommodating space 13c. Specifically, the support end 2 of the rotating member 20.
2 is received by the outer support portion 13 b of the receiving member 11, and the main body portion 21 is received by the inner support portion 1.
The front half member 11 </ b> F and the rear half member 11 </ b> B are coupled so as to be received by 3 a.
This coupling is performed by inserting a fastening screw (not shown) into the screw insertion hole 19a and screwing it into the female screw hole 19b.

In the object-side hanger 10 made in this way, the rotating member 20 is the receiving member 11.
The inner support portion 13a and the outer support portion 13b are supported so as to be rotatable about an axis extending in the front-rear direction. In this case, the rotation member 20 is rotated by the rotation restricting protrusion 13e.
It is restricted to an angular range in which it can move within the receiving recesses 21E, 21E, 21F, 21F of the main body 21). More specifically, a rotation position where the rotation restricting protrusion 13e and the upper end surface 21e of the receiving recess 21E abut (hereinafter referred to as “accepting rotation position”) rotates about 90 degrees counterclockwise from the receiving rotation position. Thus, the rotation restricting projection 13e and the upper end surface 21f of the receiving recess 21F can rotate between rotation positions (hereinafter referred to as “suspending rotation positions”).

As shown in FIG. 6 (a), the wire-side hanger 30 includes a hanging ring portion 31 on which the wire W is hung,
A rod-shaped engaging portion 32 connected to the lower portion of the hanging ring portion 31 and extending downward is configured. The engaging portion 32 is connected to the lower portion of the suspension ring portion 31 and extends downward, and is formed in a substantially conical shape that is connected to the lower portion of the straight portion 32a and increases in diameter downward. The portion is composed of an engaged tapered portion 32b formed in a hemispherical shape.

Returning to FIG. 2, the dimensional relationship between the object-side hanger 10 and the wire-side hanger 30 will be described. The insertion / extraction space 12a of the receiving member 11 has a diameter that allows the engagement-side tapered portion 32b of the wire-side suspension 30 to be inserted vertically, and the wire-side suspension 30 is positioned above the insertion / extraction space 12a. The engaged taper portion 32 b can be caused to pass through the insertion / extraction space 12 a and protrude downward from the receiving member 11. The slide movement space S of the receiving member 11 has a front-rear width that is larger than the diameter of the straight portion 32a of the wire-side hanger 30 and smaller than the diameter of the engaged tapered portion 32b. For this reason, the wire-side hanger 30 is inserted into the insertion / extraction space 12a from above,
In a state where the engaged tapered portion 32b protrudes downward from the receiving member 11 and the straight portion 32a is positioned in the insertion / extraction space 12a, the wire-side suspension 3 with respect to the object-side suspension 10.
If 0 is relatively moved to the left, the straight portion 32a can be received in the engagement space 21a of the rotating member 20 through the slide movement space S.

Further, the lower receiving space L of the receiving member 11 is an engaged tapered portion 32 of the wire-side hanger 30.
It has a diameter that allows b to be inserted vertically. For this reason, when the wire-side suspension 30 received in the engagement space 21a of the rotary member 20 through the slide movement space S is raised, the engaged tapered portion 32b protruding downward from the reception member 11 is lowered. The side receiving space L can be passed vertically and positioned in the engagement space 21a. Here, the engagement taper portion 21c of the rotating member 20
Has a shape that vertically engages with the engaged tapered portion 32b of the wire-side hanger 30, and, for this reason, the wire-side hanger received in the engagement space 21a through the slide movement space S. 30
(See FIG. 6B) is raised with respect to the object-side hanger 10, the engaged tapered portion 32b.
Is vertically engaged with the engagement taper portion 21c (see FIG. 6C).

When the engaged taper portion 32b is engaged with the engagement taper portion 21c in this way and the wire side hanger 30 and the rotating member 20 are integrated, the wire side hanger 30 is moved by the rotating member 20. It is possible to swing between the fixed receiving rotation position and the lifting rotation position. Specifically, a receiving rotation position (30V indicated by a two-dot chain line in FIG. 2 (c)) in which the wire-side hanging tool 30 extends substantially in the vertical direction, and a lifting rotation position (see FIG. 2C) that extends obliquely downward in the horizontal direction. 2 (c) and 30H) indicated by a two-dot chain line.

Next, an example of a work site where a lifting object is lifted using the lifting tool 1 will be described by exemplifying a case where an underground structure is constructed by the pneumatic caisson method shown in FIG.

FIG. 7 shows the main equipment of the pneumatic caisson method. This pneumatic caisson method is a method that is performed using the excavation equipment E1, the outfitting equipment E2, and the earth removal equipment E3, which are main equipment. Specifically, a caisson made of reinforced concrete is built on the ground, an airtight work room is provided at the bottom of the caisson, and the caisson is excavated into the work room floor while sending compressed air that matches the groundwater pressure. It is configured to build underground structures by sinking the ground into the ground.

The excavation equipment E1 includes an excavator 103 installed in a work chamber 102 provided at the bottom of the caisson 101, an automatic earth and sand loading device 105 that loads the earth and sand excavated by the excavator 103 into a cylindrical earth bucket 104, And a ground remote control room 107 having a remote control device 106 for remotely operating the excavator 103 from the ground.

The outfitting equipment E <b> 2 includes a cylindrical man shaft 111 that connects the ground and the work chamber 102 so that an operator can enter and leave the work chamber 102, and a pressure difference between the atmospheric pressure on the ground and the work chamber 102 provided on the man shaft 111. Man lock 112 (air lock) for adjusting the load, and automatic earth and sand loading device 10
5, a cylindrical material shaft 113 that connects the ground and the work chamber 102 to carry the earth bucket 104 loaded with earth and sand to the ground, and a pressure difference between the ground atmospheric pressure provided in the material shaft 113 and the work chamber 102. And a material lock 114 (air lock) for adjusting the pressure. A spiral staircase 115 is provided in the man shaft 111, and an operator can go back and forth between the ground and the work chamber 102 using the spiral staircase 115.

The earth removal equipment E3 is an earth bucket 1 on which earth and sand excavated by the excavator 103 are loaded.
04, a carrier device 121 (crane) that lifts and carries the earth bucket 104 to the ground via the material shaft 113, and a earth and sand hopper that temporarily stores the earth and sand carried to the ground by the earth bucket 104 and the carrier device 121. 122.

The lifting tool 1 according to the present invention uses a carrier device 121 (crane) to lift an object to be lifted, and in that state, lifts and lowers the material shaft 113 up and down to work room 10 from the ground.
This is used when a lifting object is carried into 2 or a lifting object in the work chamber 102 is carried out to the ground.

Next, the operation of the hanger 1 configured as described above will be described with reference to FIG. In FIG. 8, the transport cart D and the excavation device T that is the lifting target illustrated in FIG. 1 are illustrated in a simplified manner.

In the following, as an example of the operation, the operation when the excavator T is carried into the work chamber 102 at the bottom of the caisson in the pneumatic caisson method by lifting the excavator T using the lifting tool 1 will be described. Specifically, the wire side hanger 30 attached to the tip of the wire W fed out from the carrier device 121 (crane) outside the work chamber 102 (ground) is connected to the object side hanger 10, and the carrier device 121 ( A series of operations for lifting the excavator T by a crane) and carrying it into the work chamber 102 and removing the wire-side hanger 30 from the object-side hanger 10 in the work chamber 102 will be described. In the following, the excavator T is connected to the working chamber 1
The case where it is placed directly on the ground surface outside 02 (ground) and placed on the transport carriage D in the work chamber 102 will be described. In addition, the operation | movement which carries out the excavation apparatus T out of the working chamber 102 from the inside of the working chamber 102 is mentioned later.

First, the operation when the wire-side hanger 30 is connected to the object-side hanger 10 and the excavator T is prepared for lifting will be described with reference to FIG. Although FIG. 8 illustrates the excavator T placed on the transport carriage D, the excavator T may be placed directly on the ground. First, the carrier device 121 (crane) is operated so that the wire-side hanger 30 is attached to the object-side hanger 1.
After being positioned above the zero insertion / extraction space 12a, the wire W is drawn out and the wire-side suspension 30 is lowered (see FIG. 8A). At this time, the engagement tapered portion 32b of the wire-side hanger 30 is vertically passed through the insertion / extraction space 12a and protrudes downward from the receiving member 11, so that the insertion / extraction space 12 is inserted.
The wire-side hanger 30 is lowered so that the straight portion 32a of the wire-side hanger 30 is located in a (see FIG. 8B).

The carrier device 121 (crane) is operated from the state shown in FIG. 8B to move the wire-side hanging tool 30 to the left with respect to the object-side hanging tool 10. Thereby, the straight part 32a
Is moved to the left through the slide movement space S of the receiving member 11 and received in the engagement space 21a of the rotating member 20 (see FIG. 8C). As a result, as shown in FIG. 6B, the engaged taper portion 32b of the wire-side hanger 30 is positioned below the engagement taper portion 21c of the rotating member 20, and the wire W is wound up in this state. When the wire-side lifting tool 30 is raised, the engagement taper portion 21c is vertically engaged with the engagement taper portion 32b, and the excavation device T can be lifted, and the lifting preparation is completed (FIG. 6 (c) and (Refer FIG.8 (d)).

After completion of the lifting preparation, when the wire W is wound up and the wire-side lifting tool 30 is raised, the excavation apparatus T is lifted up via the object lifting tool 10. As described above, since the object-side hanger 10 is attached to the left side of the excavator T, when the wire W is wound from the state shown in FIG. 8D, the excavator T is separated from the ground. Is lifted while swinging so as to stand up around the lower right side of the excavator T. At this time, according to the standing swing of the excavator T,
The angle formed by the excavator T and the wire W (wire-side suspension 30) changes, but the rotating member 20 rotates in the receiving member 11 so as to absorb this angle change. As a result, the wire-side hoisting tool 30 is maintained in a state of extending substantially vertically, and the excavator T can be lifted up smoothly while being swung upright (see FIG. 8E).

As a result, as shown in FIG. 8 (f), the object-side lifting tool 10 is positioned above the excavating apparatus T, and the excavating apparatus T can be lifted and conveyed in the standing posture. By lifting and transporting the excavator T in this way, the excavator T is moved above the material shaft 113 connected to the work chamber 102, and then the wire W is unwound to pass the material shaft 113 so that the excavator T is moved to the work chamber 102. Move down to the inside. In this way, the excavator T is installed in the work chamber 10.
2. Carry in the work chamber 102 from outside.

The excavator T is carried into the work chamber 102 such that the excavator T is placed on the transport carriage D in the work chamber 102. Specifically, as shown in FIG. 8 (f), the transport cart D is moved below the material shaft 113, and the excavator T is lowered and placed on the transport cart D. When the excavator T is lowered by feeding the wire W, the lower end portion of the excavator T comes into contact with the transport carriage D. When the excavator T is further lowered in this state, as shown in FIG. It descends while swinging so as to fall downward with the lower end contacting the carriage D as the center. At this time, similarly to the above-described connection operation, the rotating member 20 rotates in the receiving member 11 so as to absorb the change in the angle formed by the excavating device T and the wire W. Therefore, the excavating device T
Can be lowered smoothly while rocking. In this way, the excavator T is lowered, and the excavator T is placed on the transport carriage D as shown in FIG.

In this way, after the excavator T is carried on the carriage D in the work chamber 102, it is necessary to remove the wire-side hanger 30 from the object-side hanger 10 in the work chamber 102. The above procedure is performed in the reverse order of connecting the wire-side hanger 30 to the object-side hanger 10. Specifically, first, the wire W is unwound and the wire-side hanger 30 is lowered with respect to the object-side hanger 10. Thereby, the wire side hanging tool 30 moves downward, and the engagement taper portion 2
The engagement between 1c and the engaged tapered portion 32b is released (see FIG. 6B), and the state shown in FIG. 8C is obtained.

In the state shown in FIG. 8C, the engaged tapered portion 32b protrudes below the receiving member 11, and the straight portion 32a is received in the engaging space 21a. In this state, at least one of the transport cart D and the wire-side hanging tool 30 is moved left and right, and the object-side hanging tool 10 is moved.
By moving the wire-side hanger 30 to the right relative to the straight portion 32,
a is moved through the slide movement space S and is received in the insertion / extraction space 12a (FIG. 8B).
reference). Here, since the insertion / extraction space 12a of the receiving member 11 has a diameter that allows the engagement tapered portion 32b to be inserted vertically, the wire W is wound up in this state to raise the wire-side suspension 30. Then, the engaged tapered portion 32b can be removed from the object-side hanger 10 by vertically passing through the insertion / extraction space 12a.

Then, if the wire W is wound up and the wire-side hanger 30 is taken out to the ground, the work chamber 102
The loading of the excavator T into the interior is completed. Thereafter, in the work chamber 102, the excavator T carried in is connected to the main body device to constitute the excavator 103, and the excavator 103 can be used for excavating the ground.

Next, after the work in the work chamber 102 by the excavator T is completed, the hanging tool 1
The operation in the case where the excavator T is lifted up and carried out from the work chamber 102 to the outside of the work chamber 102 will be described.

This operation is the reverse of the above operation. First, the excavator T is removed from the main body device, placed on the transport carriage D, and transported below the material shaft 113. And wire side hanging tool 3
0 is lowered in the material shaft 113, and the straight portion 32a is received in the insertion / extraction space 12a of the object-side hoist 10 attached to the side portion of the excavator T transported as described above (FIG. 8 ( b)). Next, at least one of the transport carriage D and the wire-side hanger 30 is moved in the horizontal direction, and the straight portion 32a is received in the engagement space 21a through the slide movement space S (see FIG. 8C). In this state, the wire W is wound up, the engaged taper portion 32b is engaged with the engagement taper portion 21c, and the excavator T is lifted (FIGS. 8D to 8F).
See), passing the material shaft 113 and carrying it out to the ground.

Then, the wire side hanging tool 30 is removed from the object side hanger 10 by performing the same operation as the above-described operation of removing the wire side hanger 30 from the object side hanger 10 in the work chamber 102 (FIG. 8 ( a)). This completes the unloading of the excavator T out of the work chamber 102.

As described above, the hanger 1 according to the present invention has the engaged taper portion 32b of the wire-side hanger 30 vertically engaged with the engagement taper portion 21c of the rotating member 20 so that the object-side hanger 10 is engaged. Since the wire-side hanger 30 is engaged with the object-side hanger 30, the object-side hanger 10 and the wire-side hanger 3
0 can be a simple and simple configuration. In addition, the object-side hanger 10 and the wire-side hanger 30 have such a simple and simple configuration, so that there are few failures and excellent durability and operation reliability.

Further, the wire-side hanger 30 may be connected to the object-side hanger 10 by the up-and-down movement of the wire-side hanger 30 and the relative movement of the wire-side hanger 30 in the horizontal direction with respect to the object-side hanger 10. Since the connection is released, the wire side hanger 30 can be easily connected to and released from the object side hanger 10.

Furthermore, the rotating member 20 rotates in the receiving member 11 so as to absorb the change in the angle formed by the lifting object and the wire-side lifting tool 30 when the lifting object is lifted, transported or placed. Therefore, the wire-side hanger 30 is maintained in a state extending substantially vertically. That is, wire W
Since the wire-side lifting tool 30 extends in the up-down direction, which is the winding / feeding-out direction, it is possible to smoothly perform the standing swing when lifting and transporting and the falling swing when placing.

In addition, as described above, when the lifting object is lifted, conveyed, or placed, the rotating member 20 has a receiving rotation in which the wire-side lifting tool 30 received in the engagement space 21a extends substantially in the vertical direction. It is designed to rotate within a rotation range of about 90 degrees between the position and a rotation position extending substantially in the left-right direction (position rotated from the suspension rotation position to the reception rotation position side). It doesn't rotate beyond. On the other hand, assuming a state in which the rotating member 20 is rotated beyond the angular range, for example, a state in which the rotating member 20 is rotated clockwise from the receiving rotation position in FIG. 2C, in this state, the sliding movement is performed from the insertion / extraction space 12a. It may be difficult to move the straight portion 32a through the space S into the engagement space 21a. Therefore, the receiving member 11
Rotation restricting projection 13e and receiving recesses 21E, 21F (upper end surfaces 21e, 2) of rotating member 20
1f), the rotating member 20 exceeds a predetermined angular range between the receiving rotation position and the lifting rotation position.
Is configured to restrict rotation. For this reason, the straight part 32a is reliably moved from the insertion / extraction space 12a into the engagement space 21a, and the wire-side hanger 30 is moved to the rotating member 20.
Can be engaged.

In this embodiment, the engaged taper portion 32b of the wire-side hanger 30 is vertically engaged with the engagement taper portion 21c of the rotating member 20, and the wire-side hanger 30 is engaged with the object-side hanger 10. Although the hanging tool 1 having a configuration to be combined has been illustrated and described, the object-side hanging tool 10 and the wire-side hanging tool 3 are described.
The engagement structure with 0 is not limited to this. In short, any structure may be used as long as the wire-side hanger 30 is raised and engaged vertically, and lowered to release this engagement. For this reason, for example, the wire-side hanger 30 has a configuration in which a spherical portion is formed below the straight portion 32a instead of the engaged tapered portion 32b, while the rotating member 20 is replaced with the engaging tapered portion 21c. It is good also as a structure which has a shape which can be engaged with the spherical part of the wire side hanging tool 30 up and down.

In the present embodiment, the example in which the object-side hoisting tool 10 is coupled to the side portion of the excavating device T has been described. Instead of this configuration, the object-side hoisting device 10 is detachably attached to the excavating device T. It is good also as composition to do. According to this configuration, the object-side hanger 1 between the plurality of excavating devices T
0 can be diverted, and the necessary number of the object-side hanger 10 can be reduced to reduce the manufacturing cost (carrying-in and carrying-out costs).

In the above-described embodiment, as an example of a work site in which the lifting tool 1 according to the present invention is used, a drilling device as a lifting object is carried into the unmanned work chamber 102 at the bottom of the caisson in the pneumatic caisson method. The work site where the excavator is carried out from the work chamber 102 has been described. The hanging tool 1 according to the present invention is not limited to this example, and is also useful when other equipment is required to be unmanned, for example, when equipment is carried in or out of a nuclear power generation facility. The hanging tool 1 according to the present invention is particularly useful in the work environment where unmanned operation is required as described above, but, of course, can be used in a work environment where unmanned operation is not required.

In the above-described embodiment, the lifting object T is lifted by using the wire W (a so-called wire rope, which is formed by twisting a plurality of strands formed by twisting a wire and using a core steel as a core). Has been described as an example. However, if the wire rope used for lifting the lifting object is strong enough to lift the lifting object, a rope constructed by twisting chemical fibers and natural fibers are twisted together. It may be a rope configured as described above.

DESCRIPTION OF SYMBOLS 1 Hanging tool 10 Object side hanging tool 11 Receiving member 12a Insertion / extraction space 13e Rotation restriction protrusion (rotation restriction part)
20 Rotating member 21a Engagement space 21c Engagement taper part (inner surface of substantially conical engagement space)
21e Upper end surface (rotation restricting portion)
21f Upper end surface (rotation restricting portion)
30 Wire-side hanger (line-side hanger)
31 Suspension ring part (line mounting part)
32a Straight part (intermediate part)
32b Engagement taper part (line side engagement part)
121 Carrier device (lifting device)
T Excavator (Hanging object)
W wire (line-shaped member)

Claims (3)

An object side hanger provided on a lifting object; and a line side hanger provided on a line member of the lifting device and detachably connected to the object side hanger. By connecting the lifting object and the line-shaped member by connecting the line-side lifting tool to a tool, the lifting device enables the lifting object to be lifted by the lifting device,
The line-side hanger has a line attachment portion to which the line-shaped member is attached, an intermediate portion that is connected to the lower portion of the line attachment portion and extends downward, and is connected to the lower portion of the intermediate portion and has a larger diameter than the intermediate portion. A line side engaging portion formed on
The object-side hanger includes a receiving member having an insertion / extraction space penetrating vertically and a rotation member rotatably attached to the reception member, and the rotation member communicates with the insertion / extraction space at a predetermined rotational position. And has an engaging space that penetrates up and down,
The line-side hanger can be inserted into the insertion / extraction space from above until the line-side engaging portion protrudes downward from the insertion / extraction space and the intermediate portion is located in the insertion / extraction space, and the rotating member In a state where the intermediate portion located in the insertion / extraction space can be moved laterally to the engagement space,
The line-side engagement portion is configured to vertically engage the rotating member in the engagement space when the line-side engagement portion is moved up from a state where the intermediate portion has moved into the engagement space. Has been
In the state where the line side engaging portion is vertically engaged with the rotating member in the engagement space, the object side hanging tool and the line side hanging tool are connected and the lifting object is connected by the lifting device. A hanger characterized in that an object can be hung and the line-side hanger is integrated with the rotating member and is rotatable with respect to the receiving member. The line side engaging portion is formed in a substantially conical shape with a diameter increasing downward.
The engagement space is formed in a substantially conical shape whose diameter increases toward the lower side corresponding to the outer shape of the line side engagement portion,
The suspension tool according to claim 1, wherein the line-side engagement portion is configured to contact the inner surface of the engagement space having a substantially conical shape so as to engage with the rotating member in the vertical direction. Each of the receiving member and the rotating member includes a rotation restricting portion facing the rotating direction of the rotating member,
2. The rotation of the rotating member that exceeds a predetermined rotation range including the predetermined rotation position is controlled by contacting the rotation restricting portion of the receiving member and the rotation restricting portion of the rotating member. Or the hanging tool of 2.

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