JP2922152B2 - Vertical conveyor device and excavated soil unloading method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical conveyor device and a method for unloading excavated soil, and more particularly to a vertical conveyor device and a method for unloading excavated soil that can easily cope with a change in excavation depth during excavation work.

[0002]

BACKGROUND OF THE INVENTION In general,
When excavating a shaft, excavated soil must be carried to the ground with the excavation.

[0003] As a means for carrying such excavated soil to the ground, a method of carrying it to the ground using a clamshell or a vessel has been adopted.

However, when the excavated soil is carried out to the ground using a clamshell or a vessel, the excavated soil is transported from the excavation work position and loaded, and the excavated soil is loaded and unloaded by operating a crane on the ground. Is required, and there is a problem that a large number of workers are required to perform work at the excavation position and on the ground.

In addition, when a crane is used, there is a problem that as the excavation depth increases, the time required for hoisting and unwinding becomes longer, so that the unloading capacity decreases and the unloading time becomes longer.

Further, when the excavated soil is carried out, the excavation work must be interrupted, and as the excavation depth increases, the interruption time of the excavation operation becomes longer and the construction period becomes longer.

Further, since most of the devices are made of metal, there is a problem that noise is generated.

A method of carrying excavated soil to the ground using a fixed bucket conveyor has also been adopted, but in this case, there is a problem that it is difficult to cope with a change in depth due to excavation. .

Also, in this case, as in the case described above, since most of the device is made of metal, there is a problem that noise is generated.

The present invention has been made to solve the above problems, and has as its object to reduce the number of workers,
Provided are a vertical conveyor device and an excavated soil unloading method capable of continuously unloading conveyed objects, reducing noise, and easily adapting to changes in the distance between a loading position and an unloading height position. It is in.

[0011]

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a horizontal portion is provided at a carry-out height position in a horizontal direction, and the horizontal portion is bent from one end of the horizontal portion. A belt conveyor having a cross section having a vertical portion vertically disposed to a loading height position; and a horizontal section overlapping the horizontal section at a position below the horizontal section of the belt conveyor with the cross section; A carry-out belt conveyor for carrying the conveyed object carried by the attached belt conveyor to a carry-out position, a platform for placing and supporting a horizontal portion of the belt-attached belt conveyor and a carry-out belt conveyor, and A traction device that movably pulls and supports a driving device provided at the other end of the horizontal portion of the conveyor, and that has a variable length of the vertical portion; Move the object to the belt And a loading device that supplies the conveyor belt with a crossover belt having a marginal margin on both sides of the belt body and the belt body on a feed side of the horizontal portion. A feed roller having a length extending over the entire width of the belt body that supports the back surface of the belt body, and a length corresponding to the margin of the ear of the belt body that supports the margin of the front edge of the belt body on the return side of the horizontal portion A return roller, and the feed roller can be positioned at a predetermined position on a pair of receiving rails disposed in parallel along the length direction of the gantry, and rolls along the receiving rail. Both ends are mounted and supported as much as possible.

According to the present invention, the conveyed object is continuously conveyed from the loading height position at the lower end of the vertical portion to the unloading height position by the crossed belt conveyor having the horizontal portion and the vertical portion. In addition, with the unloading belt conveyor disposed below the crossed belt conveyor, the unloading position can be reliably transported to the unloading position, and the transported object is continuously transported without requiring the unloading side operator. Further, since the conveyor belt of the belt conveyor is generally made of a rubber material, the state can be reduced in noise.

In addition, a loading device for supplying the article to be transported is provided at the lower end of the vertical portion, and the loading device is pulled by the pulling means together with the belt conveyor with a bar, so that the vertical position of the belt conveyor with the bar is increased. The loading device can be moved up and down integrally with the vertical movement of the lower end, and it is possible to easily cope with a change in the distance between the loading position and the unloading height position.

Further, the belt main body of the conveyor belt on the feed side of the horizontal portion that conveys the article to be conveyed can be reliably supported by the feed roller having a length over the entire width of the belt main body positioned on the receiving rail.

Moreover, when the driving means is moved by the traction means, the positioning of the feed roller is released and the roller is rolled on the receiving rail, so that the feed roller can be easily removed from the moving part of the drive device. Therefore, the feed roller does not hinder the movement of the driving device, and when re-positioning, the feed roller may be rolled and moved, which is troublesome for mounting and removing the heavy feed roller. And labor can be reduced, and the working time can also be reduced.

Further, on the return side of the horizontal portion having no object to be conveyed, the excess width portion of the front surface of the belt body is supported by a return roller having a short length corresponding to the excess width of the ear portion of the belt body. When the driving device is moved by the traction device, it is not necessary to remove the return roller, and the belt roller can be reliably supported by the return roller.

According to a second aspect of the present invention, in the first aspect, the gantry has a roof frame that covers an upper portion of the gantry,
The receiving rail on which the feed roller is placed and supported is suspended from and supported by the roof frame.

According to the present invention, by suspending and supporting the receiving rail on the roof frame, the space around the horizontal portion on the gantry can be widened, and the surrounding space can be used effectively. For example, when an inspection passage or the like is formed, the frame can be formed without making the gantry wide, and the space can be saved.

According to a third aspect of the present invention, in the first aspect, the pedestal has a horizontal erected on a side of a horizontal portion of the belt conveyor with a crosspiece, and the support for mounting and supporting the feed roller is provided. A rail is supported on the horizontal frame.

According to the present invention, when a certain amount of space can be secured on the side of the horizontal portion, the receiving rail can be easily supported by erection of the horizontal frame on the gantry.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the feed roller is provided with a detachable positioning pin which is inserted into and engaged with an engagement hole formed at a predetermined position of the receiving rail. Characterized in that the positioning is possible.

According to the present invention, the feed roller can be positioned and released simply by inserting and removing the positioning pin into and out of the engaging hole of the receiving rail, thereby facilitating the operation and shortening the operation time.

According to a fifth aspect of the present invention, a horizontal portion is provided on a gantry of the ground portion in a horizontal direction, and a vertical portion bent from one end of the horizontal portion and vertically provided to an excavation portion. A belt conveyor with a crossbar, wherein a driving device disposed at the other end of the horizontal portion is movably supported by traction means and the length of the vertical portion is variable, and on the gantry, An unloading belt conveyor horizontally disposed below the horizontal portion, and a loading device suspended and disposed by the traction means at the lower end of the vertical portion. A method for transporting excavated soil to the unloading position of the section, wherein the driving device provided at the other end of the horizontal portion is pulled toward the towing device by the towing device, and Raise the lower end to feed the horizontal section A plurality of feed rollers having a length extending over the entire width of the belt main body that supports the belt main body back surface of the conveyor belt are placed and supported at predetermined positions on receiving rails arranged in parallel along the length direction of the gantry. Positioning, and supporting, by a return roller having a length corresponding to the margin of the ear portion, a surface margin portion formed on the belt main body of the conveyor belt on the return side of the horizontal portion; The excavated soil is excavated to a predetermined depth, and the excavated soil is carried out of the loading device to the ground portion by the vertical portion and the horizontal portion of the belt conveyor with rails, and the excavated soil carried out to the ground portion is transferred from the horizontal portion to the unloading belt. Supplying to a conveyor and carrying out to a carry-out position of a ground portion by the carry-out belt conveyor; and, after excavation of the predetermined depth, a predetermined number of the drive device side of a distance corresponding to a descending distance of the lower end of the vertical portion. Releasing the positioning of the feed roller, and rolling along the receiving rail toward one end of the horizontal portion, and after rolling the predetermined number of feed rollers, return the drive device by the traction means. A step of moving the lower end of the vertical part by a predetermined distance by moving the roller to the vertical part side between rollers, repeating the above-described steps, excavating a predetermined depth sequentially, and carrying out excavated soil, I do.

According to the present invention, the excavated soil can be carried out from the excavated portion to the above-ground portion without being interrupted by the excavating portion, and can be carried out to the carry-out position on the above-ground portion. By simply releasing the positioning and rolling the feed roller on the receiving rail, the lower end of the vertical part can be easily lowered, reducing the labor and labor required for mounting and removing the receiving roller. Thus, working time can be reduced.

As in the case described above, it is possible to reduce the noise without requiring a worker on the carry-out side and to easily cope with the excavation depth.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 14 are views showing a state in which a vertical conveyor device according to an embodiment of the present invention is used for carrying out excavated soil when excavating a shaft.

This shaft, as shown in FIGS. 1 and 2,
An earth retaining wall 12 is formed around the shaft formation area from the ground part 10, and an inner area of the earth retaining wall 12 is excavated at a predetermined depth, and an earth retaining wall is formed on the earth retaining wall 12 in the excavation part 14, for example, An uprising member 16 is attached, and a cutting beam 18 is provided between the uprising members 16 so as to be able to resist earth pressure.

Then, a vertical conveyor device 20 is arranged from the ground portion 10 into the excavation portion 14.

The vertical conveyor device 20 supports the gantry 22 on the ground 10 via a gantry 24,
A belt conveyor 26 with a crosspiece, a pulling device 28, an unloading belt conveyor 30, and a screw feeder 32 as a loading device are supported.

The gantry 22 is provided in a state in which the end on the side of the excavation section 14 projects above the excavation section 14.
An excavated soil pit 34 is provided below an end opposite to the end on the fourth side.

A work table 36 is formed on the pedestal 24 on the side of the excavation part 14.

Although not shown, the gantry 22 is appropriately reinforced by a truss structure or the like.

Further, as shown in FIG. 4, the gantry 22 is provided with an inspection passage 21 around it.
1 so as to cover the upper part of the gantry 22 including
And a roof (not shown) is attached to the roof frame 23.

As shown in FIG. 3, the conveyer belt 27 has a wavy elastic vertical bar 40 along the length direction near the both sides of the surface of a flat belt-shaped belt body 38, as shown in FIG. The horizontal rails 42 are provided at predetermined intervals between the vertical rails 40, and a storage section 44 is formed by the vertical rails 40 and the horizontal rails 42.

Further, a margin portion 46 is formed on both sides of the belt body 38 in the width direction.

Further, the belt conveyor 26 with a crosspiece is shown in FIG.
As shown in FIG. 2 and FIG. 2, a horizontal portion 48 is provided on the gantry 22 along the gantry 22 in a horizontal direction.
And a vertical portion 50 which is bent at a right angle from the end on the side of the excavation portion 14 and is disposed vertically to the excavation position in the excavation portion 14.

At the lower end of the vertical portion 50, a tail portion 52 bent horizontally along the excavation surface is formed.

A tail pulley 54 is disposed at an end of the tail portion 52. A bending pulley 56 is provided at a bent portion from the horizontal portion 48 to the vertical portion 50 and at a bent portion from the vertical portion 50 to the tail portion 52, respectively. A drive pulley 58 provided in a drive device 80 is provided at an end of the horizontal portion 48 on the side of the excavated soil pit 34.

Further, feed rollers 60 for supporting the back surface of the belt body 38 are disposed at predetermined intervals on the conveyor belt 27 on the feed side in the horizontal portion 48 of the belt conveyor 26 with rails. A return roller 62 that supports the surface of the belt body 38 is provided at a predetermined interval on the belt 27.

In the bent portion from the horizontal portion 48 to the vertical portion 50, the back surface of the belt body 38 of the conveyor belt 27 on the feed side is bent and supported by a plurality of feed rollers 60.

As shown in FIG. 11, side rollers 64 that contact the side of the belt body 38 of the conveyor belt 27 are disposed on both sides of the horizontal portion 48 of the belt conveyor 26 with rails. 27 horizontal direction (width direction)
At the same time, pulley-like rollers 66 sandwiching both sides of the belt body 38 of the conveyor belt 27 are disposed on both sides of the vertical portion 50 so that the conveyor belt 27 can move in the horizontal direction (width direction). ), And also in the front-back direction (front and back).

As shown in FIGS. 1 and 2, the pulley-shaped rollers 66 are disposed at two locations near the upper end of the conveyor belt 27 near the feed side and near the lower end of the return side of the vertical portion 50. ing.

In this case, in the vertical portion 50, FIG.
As shown in FIG. 7, in addition to the pulley-shaped rollers 66, a pair of pinching rollers 68 for pinching the marginal width 46 of the belt body 38 from both front and back sides are disposed on both sides, and the conveyor belt 27 is provided.
It is also possible to reliably prevent the vertical portion 50 from moving in the front-rear direction (front-back direction).

Further, on the return side of the conveyor belt 27 near the driving pulley 58 of the horizontal section 48, a hitting roller 70 spanning the entire width of the belt main body 38 is provided on the back side of the belt main body 38, as shown in FIGS. The excavated soil attached to the conveyor belt 27 is reliably dropped by hitting the back surface of the belt main body 38 by the hitting roller 70.

The hitting roller 70 has a state in which a plurality of pieces 72 having a plurality of convex portions in the circumferential direction are attached with the positions of the plurality of convex portions shifted from each other.
The convex portion of the frame 72 hits the back surface of the belt body 38 with the movement of.

In this case, in order to prevent resonance of the conveyor belt 27 due to the hitting roller 70, as shown in FIG. 8, a pair of adjusting rollers 74 are provided in contact with the vertical rail 40, and the distance between the adjusting rollers 74 is adjusted. Adjustment is made possible to reliably prevent resonance.

At the bent portion between the horizontal portion 48 and the vertical portion 50, as shown in FIG. 10, a cover 76 formed of four protective sheets is attached so as to cover the entire bent portion from the worktable 36. The excavated soil is prevented from dropping into the work area of the excavation part 14 when bending from the vertical part 50 to the horizontal part 48.

Further, from the position above the work table 36, the vertical portion 5
Until the lower end, the dust chute 78 formed of four protective sheets partially covers the cover 76 with the dust chute 78 so as to cover the crossed belt conveyor 26, and excavated soil falls into the work area of the excavation part 14. To ensure that the

Further, as shown in FIG. 10, a scraper 102 is provided on a bending pulley 56 disposed at a bent portion between the horizontal portion 48 and the vertical portion 50, and excavated soil adhered to the bending pulley 56 is removed. I try to scrape it.

As shown in FIGS. 1 and 2, the traction device 28 movably supports a driving device 80 disposed at the end of the crossed belt conveyor 26 on the excavated soil pit 34 side. It comprises an electric winch 82 and a wire rope 86.

The driving device 80 is movable in the longitudinal direction of the gantry 22 along a rail 84 provided on the gantry 22. The driving device 80 includes a driving pulley 5
The conveyor belt 27 is driven by the driving pulley 58.

The electric winch 82 is fixed to the end of the excavated soil pit 34 on the gantry 22 and is connected to the driving device 80 by a wire rope 86. By extending the wire rope 86, the driving device 80 is connected to the rail 84. Along the excavation part 14
Side, the length of the vertical portion 50 is extended to lower the lower end thereof, and the wire rope 86 is wound thereon to draw the driving device 80 toward the excavated soil pit 34, thereby lowering the lower end of the vertical portion 50. The section can be raised.

In this case, when the driving device 80 moves,
It is necessary to keep the feed roller 60 and the return roller 62 out of the way.

Therefore, as shown in FIG. 4 and FIG. 5, the feed roller 60 has a length extending over the entire width of the belt body 38,
The back surface of the belt body 38 is reliably supported by the feed roller 60 so that the load on the feed side of the conveyor belt 27 on which the excavated soil is piled can be reliably supported. Is positioned at a predetermined position with respect to a pair of receiving rails 88 arranged in parallel along the axis, and is rollable along the receiving rail 88.

Specifically, the pair of receiving rails 88 are attached to a pair of hanging frames 89 which are attached to the roof frame 23 covering the upper part of the gantry 22 in a hanging state, and are supported by the roof frame 23 in a suspended state. It has become. Also,
The interval between the pair of receiving rails 88 is set to an interval at which the driving device 80 can move.

As described above, although the interval between the pair of receiving rails 88 is set to an interval at which the driving device 80 can move, the inspection rail is suspended from the roof frame 23 and supported. Without narrowing the passage space of 21, the space can be effectively utilized and space can be saved.

Further, by forming a pair of suspension racks 89 in a truss structure and forming a pair of receiving rails 88 with a channel material, the conveyor belt 27 on the feed side on which excavated soil is loaded.
It is designed to withstand the load.

Further, as shown in FIGS. 6 and 7, a plurality of engaging holes 90 are formed in the pair of receiving rails 88 at predetermined intervals in the length direction thereof. The shafts 60a at both ends are placed, and the shafts 60a
By inserting both ends of the substantially U-shaped positioning pin 91 into the engagement hole 90 so as to sandwich the
The feed roller 60 can be rolled on the rail 88 by receiving the positioning pin 91 from the engaging hole 90.

Therefore, when the driving device 80 is moved toward the excavation section 14 by the electric winch 82, the positioning pin 91 is pulled out and the feed roller 60 is received by the rail 8
In order to position the feed roller 60 on the opposite side, the feed roller 60 is rolled on the receiving rail 88 to a predetermined position and the positioning pin 91 is engaged. It is only necessary to insert the feed roller 90 into the hole 90, and the labor and labor for mounting and removing the feed roller itself are not required.
Work will be performed in a short time.

The return roller 64 is connected to the belt body 38.
The belt has a short length corresponding to the ear margin 46, and the conveyor belt 27 is supported by being in contact with the surface ear margin 46 of the belt body 38, thereby allowing the driving device 80 to pass therethrough. Removal of the roller 62 is unnecessary.

The unloading belt conveyor 30 is disposed horizontally below the horizontal section 48 of the crossed belt conveyor 26 on the gantry 22 so as to overlap the horizontal section 48, and the excavated soil conveyed by the crossed belt conveyor 26. Receiving
The excavated soil 1 is transported to the excavated soil pit 34 which is the carry-out position.
14 is dropped into the excavated soil pit 34.

As shown in FIGS. 1 and 2, the carry-out belt conveyor 30 is constituted by a flat belt conveyor. The carry-out length of the carry-out belt conveyor 30 is longer than the length that the driving device 80 can move on the horizontal portion 48, and is substantially equal to the one-step excavable depth.

As shown in FIG. 10, a protection sheet 100 is provided below the excavation section side end of the discharge belt conveyor 30, and a scraper 102 is also used as a shooter. By guiding the excavated soil dropped from the carry-out belt conveyor 30 onto the protective sheet 100, the excavated soil is prevented from falling into the work area of the excavation unit 14.

As shown in FIGS. 13 and 14, the screw feeder 32 integrally has a charging hopper 104,
It is in a state of being supported by the frame 106.

The tail pulley 54 of the tail portion 52, the variable-angle pulley 56, and the like are attached and fixed to the frame 106, and the tail portion 52 and the screw feeder 32 are integrated.

The frame 106 is connected to the driving device 80 via wire ropes 108 at a plurality of locations.
It is suspended and held via a wire rope 108 so as to be able to move up and down with the movement of the driving device 80. In this case, since the loading device including the screw feeder 32 is suspended, an appropriate tension acts on the crossed belt conveyor, the crossed belt conveyor is held at a predetermined position, and an adverse effect such as blurring is prevented. be able to.

Further, the screw feeder 32 has two screws 110 in parallel, and by the rotation of the screws 110, the excavated soil injected into the input hopper 104 from the input port 112 is fixed to the tail section 52 by a fixed amount. It can be supplied on a belt conveyor 26.

Next, a method of unloading excavated soil using the vertical conveyor 20 will be described.

First, in the first excavation stage, as shown in FIG. 1, the area surrounded by the retaining wall 12 constructed in the shaft formation area is excavated to a predetermined depth by excavating means such as a backhoe, and The belly material 16 and the cutting beam 18 are provided, and the tail 52 and the screw feeder 32 of the belt conveyor 26 are installed on the excavated surface.

After the second excavation, the excavated soil is introduced into the input hopper 104 of the screw feeder 32 while excavating the excavated surface of the excavation section 14.

The excavated soil injected into the input hopper 104 is dropped by a predetermined amount from the input port 112 onto the conveyor belt 27 of the tail section 52 by the screw 110 of the screw feeder 32. When the soil moves the conveyor belt 27, the vertical rail 4
In a state where the vertical section 50 is stored in the storage section 44 formed by the horizontal rails 42 and the horizontal rails 42, the vertical section 50 is lifted and carried out onto the ground section 10.

In this case, since the vertical portion 50 is completely covered from the excavation region by the dust chute 78 and the cover 76 above the dust chute 78, even if excavated soil falls from the conveyor belt 27 of the belt conveyor 26 with rails, The excavated soil does not fall into the work area of the excavation unit 14.

The excavated soil carried out onto the above-ground portion 10 moves from the vertical portion 50 to the horizontal portion 48 and is conveyed by the horizontal portion 48 to the excavated soil pit 34 side, and at the end on the excavated soil pit 34 side. The take-out belt conveyor 30 below the horizontal section 48
Dropped on top.

The excavated soil dropped onto the unloading belt conveyor 30 is driven into the excavated soil pit 34 from the end of the unloading belt conveyor 30 by driving the unloading belt conveyor 30.

At the return side of the horizontal section 48, the excavated soil adhered to the conveyor belt 27 is dropped by the hitting roller 70, and the excavated soil dropped by the hitting roller 70 is left as it is. It falls on the carry-out belt conveyor 30 and is thrown into the excavated soil pit 34.

At the bent portion between the horizontal portion 48 and the vertical portion 50, the excavated soil adhering to the variable-angle pulley 56 is scraped off by the scraper 102 and falls through the dust chute 78 into the working area of the excavating portion 14. Without falling down.

Further, the conveyor belt 27 of the crossed belt conveyor 26 is prevented from laterally swaying and longitudinally swaying in the vertical portion 50 by the side rollers 64 and the rollers 66 on the pulleys, and the excavated soil is carried out in a stable state. The Rukoto.

The excavating section 1 of the unloading belt conveyor 30
At the end on the four side, a scraper 10 that is also used as a shooter
2, the excavated soil that has fallen from the carry-out belt conveyor 30 is guided onto the protective sheet 100 provided thereunder, and does not fall into the excavation work area of the excavation unit 14.

In this way, every time the excavated surface of the excavated portion 14 is excavated to a predetermined depth, as shown in FIG. 2, the bulging material 16 and the cutting beam 18 are disposed on the retaining wall 12. In parallel with this operation, the wire rope 86 is extended by the electric winch 82, the driving device 80 is moved toward the excavating section 14 by the excavating depth, and the length of the vertical section 50 of the belt conveyor 26 is extended, and the tail The unit 52 and the screw feeder 32 are lowered integrally and installed on the excavation surface of the excavation unit 14.
By doing so, excavation and unloading of excavated earth and sand can be continued without stopping the excavation operation.

In this case, when the driving device 80 is moved, the positioning pin 91 for positioning the feed roller 60 of the driving device 80 by a distance corresponding to the descending distance of the lower end of the vertical portion 50 is received by the rail 88. The feed roller 60 is withdrawn from the hole 90, and the excavation unit 1 is
The driving device 80 is moved in this state by rolling to the side 4 and excluding the moving portion of the driving device 80.

As described above, since it is only necessary to pull out the positioning pin 91 and roll the feed roller 60, the work can be performed easily and in a short time.

Thereafter, the same steps as described above are repeated, and while excavating to a predetermined depth, the excavated soil is removed from the vertical conveyor 2.
By 0, it is carried out to the excavated soil pit 34.

By repeating such a process, it is possible to form a shaft by excavating the excavated soil continuously and excavating the excavated soil to a desired depth sequentially.

When the length of the conveyor belt 27 becomes insufficient, it is possible to easily cope with the problem by adding the conveyor belt 27 appropriately.

In this case, if the work of adding the conveyor belt 27 is performed during the installation work of the base support, the construction can be continued without interrupting the construction work of the shaft.

When raising the lower end of the vertical portion 50 after adding the conveyor belt 27, the electric winch 82
Drive device 80, and then the receiving rail 8
8, the feed roller 60 is moved to a predetermined position, and the positioning pin 91 is inserted into the engaging hole 90 of the receiving rail 88 at that position, thereby easily and quickly positioning the feed roller 60. It can be performed.

FIG. 15 shows another embodiment of the present invention.

In this embodiment, unlike the previous embodiment, a case is shown in which a roof frame is not provided on the gantry 22.

In this case, the receiving rail 88 cannot be suspended and supported.
A horizontal rail 150 is erected at the side of the horizontal portion 50 of the first belt conveyor 26, and the feed rail 60 is positioned on the horizontal rail 150, and a receiving rail 88 that supports the rolling roller is attached and supported. Like that.

Thus, even if the roof frame is not provided on the gantry 22, the receiving rail 88 can be supported.

In this case, the horizontal frame 150 is
Since it is located on the side, it is preferable to slightly widen the inspection passage 21 to secure a passage space.

On the other hand, when the inspection passage 21 is not desired to be widened, the horizontal frame 15 is formed by a pantograph structure or the like.
It is preferable that the “0” is formed so as to be extendable and contractible so that the “0” can be contracted toward the excavation portion 14 side.

In this case, the feed roller 60 may be directly attached to and supported by the horizontal frame 150 without providing the receiving rail 88, and the feed roller 60 may be moved together with the horizontal frame 150.

The present invention is not limited to the above embodiments, but can be modified to various embodiments within the scope of the present invention.

Although the embodiment in which the vertical conveyor device is supported by the gantry installed on the ground has been described, the vertical conveyor device may be installed on a gantry provided on the excavation unit 14. In this case, the installation of the vertical conveyor device is performed above the excavation section, so that the facility site is not required and the merit is great. In addition, the earth retaining method is not limited to the cutting beam / belly raising method, but may be applied to a method using an earth anchor method, a stile beam, or a ring beam method.

Further, in the above-described embodiment, the case where the vertical conveyor of the present invention is used for excavation work in a shaft or the like has been described. However, in the case where grain, ready-mixed concrete, pulp, etc. are conveyed from a low place to a high place. Is also applicable.

Further, in the above-described embodiment, the case where the cutting beam / raveling method is adopted as the earth retaining structure has been described. However, the present invention is not limited to this example, and the earth anchor method and the stile beam method can be adopted. It is.

Further, the vertical conveyor device is not limited to the case where the vertical conveyor device is installed on the ground surface above the ground, but for example, the vertical conveyor device may be installed on a loading gantry that is frequently used in excavation for underground structures. it can. In this case, since most of the vertical conveyor device can be installed in the space above the excavation section, the work space required for excavation work can be reduced.

[0100]

[Brief description of the drawings]

FIG. 1 is a side view in an early stage of excavation showing a state in which a vertical conveyor device according to an embodiment of the present invention is used for carrying out excavated soil during excavation of a shaft.

FIG. 2 is a side view showing a state where excavation is advanced from the state of FIG.

FIG. 3 is an enlarged perspective view showing a part of a conveyor belt of the belt conveyor with a crosspiece shown in FIGS. 1 and 2;

FIG. 4 is a longitudinal sectional view showing a state of a feed roller and a return roller in a horizontal portion of the belt conveyor with rails.

FIG. 5 is a partial side view showing a relationship between the suspension of FIG. 4 and a feed roller.

FIG. 6 is an enlarged sectional view showing a relationship between a receiving rail and a positioning pin.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a side view showing a mounting state of a hitting roller in a horizontal portion.

FIG. 9 is a front view of the hitting roller of FIG. 8;

FIG. 10 is a side view showing a state of a bent boundary portion between a horizontal portion and a vertical portion.

FIG. 11 is a perspective view showing a side roller of a horizontal portion and a pulley-shaped roller of a vertical portion.

FIG. 12 is a perspective view showing a mounting state of a sandwiching roller for reliably preventing the vertical portion from moving in the front-rear direction.

FIG. 13 is a plan view of the screw feeder.

FIG. 14 is a side view of the screw feeder of FIG.

FIG. 15 is a cross-sectional view illustrating a vertical conveyor device according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Aboveground part 20 Vertical conveyor 21 Inspection passage 23 Roof frame 26 Belt conveyor with crosspiece 27 Conveyor belt 28 Traction device 30 Unloading belt conveyor 32 Screw feeder 38 Belt main body 40 Vertical beam 42 Horizontal beam 46 Ear margin 48 Horizontal portion 50 Vertical portion Reference Signs List 60 feed roller 60a shaft 62 return roller 64 side roller 66 pulley-shaped roller 80 drive device 82 electric winch 88 receiving rail 89 suspension 90 engaging hole 91 positioning pin 114 excavated soil

Continuation of front page (56) References JP-A-3-90708 (JP, A) JP-A-8-260510 (JP, A) JP-A-6-17443 (JP, A) JP-A-7-253000 (JP) , A) (58) Field surveyed (Int. Cl. ⁶ , DB name) E02F 7/00-7/04 B65G 15/00-15/64

Claims (5)

(57) [Claims] 1. A crosspiece having a horizontal portion disposed in a horizontal direction at a carry-out height position and a vertical portion bent from one end of the horizontal portion and vertically disposed to a loading height position. A belt conveyor with an output, and an output belt conveyor disposed horizontally below the horizontal portion of the belt conveyor with the rail so as to overlap with the horizontal portion, and transporting the conveyed object conveyed by the belt conveyor with the rail to an output position. And a gantry on which the horizontal portion of the bar-shaped belt conveyor and the unloading belt conveyor are placed and supported, and a driving device disposed on the other end of the horizontal portion of the bar-shaped belt conveyor can be moved on the gantry. A vertical conveyor including: a traction device that supports traction and changes the length of the vertical portion; and a loading device that is disposed at a lower end portion of the vertical portion and supplies a conveyed object to the belt conveyor with a crosspiece. A device, The crossed belt conveyor is a conveyor belt having a marginal width on both sides of the belt main body, and a feed roller having a length over the entire width of the belt main body that supports the back surface of the belt main body on the feed side of the horizontal portion. A return roller having a length corresponding to the margin of the ear of the belt body that supports the margin of the surface of the belt main body on the return side of the horizontal portion; and the feed roller has a length of the gantry. A vertical conveyor device, wherein both ends are placed and supported on a pair of receiving rails arranged in parallel along a direction so as to be able to be positioned at a predetermined position and rollable along the receiving rail. . 2. The gantry according to claim 1, wherein the gantry has a roof frame that covers an upper portion of the gantry, and the receiving rail on which the feed roller is placed and supported is suspended and supported by the roof frame. And vertical conveyor equipment. 3. The gantry according to claim 1, wherein the gantry has a gantry standing upright on a side of a horizontal portion of the belt conveyor with crosspieces, and the receiving rail for placing and supporting the feed roller is a gantry. A vertical conveyor device, which is supported by a vertical conveyor. 4. The feed roller according to claim 1, wherein the feed roller is capable of being positioned by a detachable positioning pin that is inserted into and engaged with an engagement hole formed at a predetermined position of the receiving rail. A vertical conveyor device. 5. A horizontal part which is horizontally disposed on a gantry of the above-ground part, and a vertical part which is bent from one end of the horizontal part and vertically disposed to a digging part, wherein the horizontal part is provided. A driving device disposed at the other end of the belt conveyor is movably supported by traction means and the length of the vertical portion is variable, and on the gantry, at a position below the horizontal portion. Excavation from the excavation unit to the unloading position on the ground part using a vertical conveyor device including a horizontally disposed discharge belt conveyor and a loading device suspended and disposed at the lower end of the vertical part by the traction means. An excavated soil unloading method for transporting soil, wherein the driving device provided at the other end of the horizontal portion is pulled toward the traction device by the traction device, and the lower end of the vertical portion is raised, The conveyor belt on the feed side of the horizontal section A plurality of feed rollers having a length extending over the entire width of the belt main body supporting the back surface of the main body are placed and supported at predetermined positions on receiving rails disposed in parallel along the length direction of the gantry, and positioned. And a step of supporting, by a return roller having a length corresponding to the margin of the ear portion, a surface margin portion formed on the belt body of the conveyor belt on the return side of the horizontal portion; Excavation is carried out to the above-ground part by the vertical and horizontal parts of the belt conveyor with crosspieces, and the excavated soil is delivered from the horizontal part to the unloading belt conveyor. And a step of unloading to the unloading position of the ground portion by the unloading belt conveyor, and after excavation of the predetermined depth, a predetermined number of the feed rollers on the drive device side for a distance corresponding to a descending distance of the lower end of the vertical section. Rank Releasing the determination and rolling along the receiving rail toward one end of the horizontal portion, after rolling the predetermined number of feed rollers, the traction means causes the drive device to move between the return rollers. A step of moving the lower end of the vertical portion to a predetermined distance by moving to a vertical portion side; and repeating the above steps, excavating a predetermined depth in order, and discharging the excavated soil, Method.