JP3012866B2 - Temporary retaining plate supply device and temporary retaining plate connecting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary soil plate supplying device and a temporary soil plate connecting device for automatically supplying and connecting a temporary soil plate in a shaft such as a deep foundation.

[0002]

2. Description of the Related Art Conventionally, as for temporary soil retaining of a shaft such as a deep foundation, a method of sequentially assembling a segment-shaped temporary soil retaining plate, which is carried from the ground to the tip of a face by a winch, sequentially and manually is generally used. However, assembling the temporary soil retaining plate by hand is a troublesome operation in a bad environment, and there is a risk in carrying in the temporary soil retaining plate. Therefore, various types of temporary soil retaining plate supply devices and temporary soil retaining construction machines such as an elector device have been proposed in response to demands for improved safety and labor saving. This kind of temporary soil retaining machine is configured to supply a temporary soil retaining plate from the ground to an Electa device by a temporary soil retaining plate supply device, and to move the transported temporary soil retaining plate to a target position. Then, the worker connects the temporary retaining plate with bolts in the circumferential direction and the axial direction to assemble the temporary retaining plate.

[0003]

[0009] Manual assembling of the temporary earth retaining plate requires a large burden on the worker, which is disadvantageous in terms of work efficiency. In addition, a fall accident occurs when the worker enters the mine, There is a risk of accidents due to falling construction materials and the like, and unmanned underground work is desired. However, although the temporary soil retaining construction machine proposed so far can automatically carry in the temporary soil retaining plate and the like, the work of fastening the temporary soil retaining plate with bolts and the like is performed manually, and thus unmanned underground has not been realized. Then, the technical problem which should be solved in order to plan unmanned construction of temporary soil retaining and to improve safety and construction efficiency arises, and an object of the present invention is to solve the above-mentioned problem.

[0004]

SUMMARY OF THE INVENTION The present invention proposes to achieve the above-mentioned object, and provides a segment-shaped temporary earth retaining plate provided with bolt holes on upper, lower, left and right end faces from a stock yard directly below a winch device. And a winch device for suspending the transported temporary soil retaining plate into the shaft, a female screw is formed in the bolt hole of the temporary soil retaining plate, and the lower end surface and either the left or right side are formed. A connecting bolt is screwed into each of the bolt holes on one end face from the inside, and a temporary retaining plate support frame is engaged with a guide rope installed on the ground and in the pit, and the support frame is suspended by the winch device. A bolt hole corresponding to a bolt hole on an upper end surface of the temporary retaining plate is formed in a lower end surface of the support frame, and a bolt is loosely fitted into the bolt hole from above; A temporary soil retaining plate supply device, wherein the temporary retaining soil plate is coupled to a lower end surface of the support frame by the fastening device, and the temporary soil retaining plate is suspended by the winch device and supplied to the shaft. An earth retaining plate supply device is provided.

[0005] Further, the periphery of one of the upper and lower bolt holes of the temporary earth retaining plate is raised, and the periphery of the other bolt hole is symmetrically depressed to form an uneven portion for positioning. A hole position inspection for providing a reference convex portion or a reference concave portion corresponding to the convex portion or the concave portion, respectively, at a lower end surface of the bogie, and inspecting the positions of bolt holes on the right and left end surfaces of the temporary earth retaining plate at both end portions of the traveling range of the bogie. It is intended to provide a temporary earth retaining plate supply device provided with the device.

Further, the temporary soil retaining plate supplied into the shaft is supported and rotated in the circumferential direction of the shaft, and the temporary soil retaining plate is moved in the radial direction of the shaft to be installed at a target position on the wall of the shaft. In the plate connecting device, a fastening device for fastening the bolts in the axial direction and the circumferential direction previously mounted on the temporary soil retaining plate, an expanding device for pressing the existing temporary soil retaining plate in the radial direction, and a radial direction of the shaft. An upper and lower telescopic two-stage gripper device is provided, and a lifting device such as a hydraulic cylinder is interposed between each of the two-stage gripper device and the temporary retaining plate connection device main body, and the two-stage gripper device is connected to the temporary retaining plate. It is an object of the present invention to provide a temporary earth retaining plate connecting device which is separately movable up and down with respect to a connecting device body.

[0007]

According to the first aspect of the present invention, a bolt hole corresponding to the bolt hole of the temporary soil retaining plate is provided on the lower end surface of the temporary soil retaining plate support frame suspended from the winch. Female screws are formed in the bolt holes at the upper, lower, left and right end surfaces of the temporary earth retaining plate, and bolts are temporarily fixed in advance in the bolt holes at the lower end surface or one of the left and right end surfaces. In the axial direction and in the circumferential direction. The temporary earth retaining plate is transported directly below the temporary earth retaining plate support frame, the temporary earth retaining plate support frame is landed on the upper end surface of the temporary earth retaining plate, and the bolt loosely inserted into the bolt hole of the temporary earth retaining plate support frame. Is fastened to the temporary retaining plate by the fastening device, and the temporary retaining plate is connected to the temporary retaining plate support frame.

[0008] By driving the winch device, the temporary retaining plate is suspended in the pit. The temporary soil retaining plate is placed on the temporary soil retaining plate connection device in the pit, and the fastening of the bolts is removed to complete the supply of the temporary soil retaining plate, and the temporary soil retaining plate support frame is pulled up to the ground.

According to the second aspect of the present invention, the temporary retaining plate used in the present invention is such that a convex portion or a concave portion provided around the bolt hole on the upper or lower end face is easily fitted with a concave portion or a convex portion of the adjacent temporary retaining plate. It has a structure that can match the holes.

[0010] On the upper surface of the trolley for transporting the temporary retaining plate from the stock location to immediately below the hanging winch and on the lower surface of the temporary retaining plate support frame, a reference concave portion or a reference convex portion for inspecting a bolt hole position of the temporary retaining plate is provided, respectively. Part is provided.
Therefore, when the temporary earth retaining plate is transferred to the bogie and when the temporary earth retaining plate support frame is landed on the upper end surface of the temporary earth retaining plate, the temporary earth retaining portion is determined depending on whether or not the uneven portion is fitted to the reference uneven portion. The quality of the board can be determined. Then, when the temporary retaining plate is transferred to the bogie, the bolt hole position on the circumferential end surface of the temporary retaining plate is inspected by a bolt hole position inspection device arranged on the end side of the bogie rail. Also, when the bogie is moved to the winch device side, the bolt hole position of the other end face is inspected by the bolt hole inspection device arranged on the other end side of the rail, and the defective temporary retaining soil is placed before the temporary retaining plate is carried into the mine. Boards can be found and eliminated.

In the connecting device according to the third aspect of the invention, when the temporary retaining plate supplied from the ground is moved to a target position, the fastening device rotates a bolt previously mounted in a bolt hole of the temporary retaining plate, and the temporary retaining plate rotates. The earth retaining plate is connected to the existing temporary earth retaining plate.

[0012] When assembling the last of the temporary soil retaining plates for one ring, the expanding device presses the existing temporary soil retaining plates located on the left and right of the last temporary soil retaining plate in the expanding direction, and removes the last temporary soil retaining plate. Form a gap for insertion.

After one ring is assembled, the upper and lower two-stage gripper devices are alternately expanded and contracted, and the lifting / lowering device of the gripper device is driven, so that the entire temporary earth retaining plate connection device is axially moved by one ring in the pit. Then, the process proceeds to the next ring forming step using the temporary retaining plate.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 4 show a temporary earth retaining plate supply device 1, and 2 is a shaft such as a deep foundation. The temporary soil retaining plate supply device 1 is equipped with sheaves 5, 6, 7 on an upper part of a portal frame 4 erected on a base 3 facing a pit of a shaft 2, and is connected to the ground via sheaves 5, 7 at both left and right ends. A guide wire rope 8 is installed on a sheave block (not shown) of the temporary earth retaining plate connection device in the mine. One end of the guide wire rope 8 is locked to a ground guide wire rope tensioning cylinder 9 shown in FIG. 1, and is engaged with a guide wire rope winding winch 10 via a sheave 7, a sheave block and the other sheave 5. ing.

A guide wire rope 8 erected in two sections on the ground and in the mine has a ladder-shaped temporary earth retaining plate support frame 11.
, Are inserted through the cylinder-shaped slide guides 12, 12 provided at the first position. The sheave 13 provided at the upper center of the temporary retaining plate support frame 11 has a temporary retaining plate lifting wire rope 14.
One end of the wire rope 14 is engaged with the cross beam 4a of the portal frame 4 via a tension detector 15 as shown in FIG. 3, and the other end is wound around a temporary retaining plate elevating winch 16. Have been.

As shown in FIG. 3, horizontal slide rails 17, 17 are provided on the front end surface of the base 3, and a carriage 18 engaged with the slide rails 17, 17 is provided with a pinion gear (not shown) meshing with a rack 19. ) Is driven by a motor 20 to reciprocate between the stock floor 21 and immediately below the temporary retaining plate support frame 11 along the slide rails 17.

A jib crane 22 for transferring the temporary earth retaining plate 41 placed on the stock floor 21 to the carriage 18 is disposed above the stock floor 21. The temporary retaining plate 41 is one in which one ring is formed by connecting six temporary retaining plates in the circumferential direction, and four holes are provided on both upper and lower end surfaces, respectively. One hole is drilled.

As shown in FIG. 5A, a convex nut 43 is fixed to the hole 42 on the upper end surface of the temporary retaining plate 41b, and the head of the convex nut 43 projects upward. A concave nut 44 into which the head of the convex nut 43 is fitted is fixed to the hole 42 on the lower end surface, and a bolt 45 is screwed to the concave nut 44 from above. Therefore, as shown in FIG. 5B, the head of the convex nut 43 and the upper temporary retaining plate 41
The upper and lower temporary retaining plates 41a and 41b are aligned with each other by fitting the concave nut 44 on the lower end surface of a, and by fastening the bolt 45, as shown in FIG.
The upper and lower temporary retaining plates 41a and 41b are combined.

FIG. 6 shows the left and right end surfaces of the temporary earth retaining plate 41,
The nuts 46 are fixed to the holes 42, respectively, but unlike the upper and lower end surfaces, the left and right end surfaces are formed flat. A bolt 45 is screwed into the nut 46 on the left end surface from the inside in advance. When the left and right end surfaces are butted together and the bolt 45 is fastened as shown in FIGS. 41c and 41d are combined.

As shown in FIG. 7, a recess 23 is formed at the lower end surface of the lower horizontal frame 11a of the temporary retaining plate support frame 11 at a position corresponding to the convex nut 43 of the temporary retaining plate 41. A bolt hole 24 is formed in the upper part of the hole, and a bolt 25 is inserted from above. Bolt 25 is shaft 25
The male screw 25b is formed only at the distal end of the
Cover 2 fitted to shaft 25a smaller in diameter than 5b
6 is mounted on the lower horizontal frame 11a, and the bolt 25 is held. Head of bolt 25 and retaining cover 26
A compression coil spring 27 is interposed in the and urges the bolt 25 upward, and a stopper 28 that regulates a screwing stroke is provided on the outer periphery of the compression coil spring 27.

As shown in FIG. 2B, the temporary retaining plate support frame 11 is lowered and the convex nut 43 of the temporary retaining plate 41 is fitted into the concave portion 23 of the temporary retaining plate support frame 11, and the bolt 25 is fixed. When fastened to the convex nut 43, the temporary retaining plate 41 is coupled to the temporary retaining plate support frame 11 as shown in FIG. When the bolt 25 is loosened and the connection with the convex nut 43 is released, the bolt 25 returns to the state shown in FIG.

As shown in FIGS. 3 and 4, on the base 3, a bolt fastening machine 29 for fastening the bolts 25, 25 of the temporary retaining plate support frame 11 to the temporary retaining plate is installed. The bolt fastening machine 29 has two hydraulic socket wrenches 30, 30
And a hydraulic socket wrench 30, 30 driven by a motor.
Is driven back and forth and moved up and down.

Further, as shown in FIG.
7, a circumferential bolt hole position inspection device 31,
31 are installed. Bolt hole position inspection device 31,3
1 allows the gauge pin 32 to be protruded by the motor 33, and the appropriateness of the bolt hole position can be determined based on whether the gauge pin 32 is inserted into the nuts 46 on the left and right end surfaces of the temporary retaining plate 41.

On the upper surface of the bogie 18, gauge pins 34, 34,..., Which are reference convex portions to be fitted with the concave nuts 44, 44,.
The appropriateness of the bolt hole position on the lower end surface of the temporary earth retaining plate 41 transferred to the above can be determined.

Next, FIG. 8 to FIG.
It will be described according to. In FIG. 8, reference numeral 51 denotes a temporary earth retaining plate connection device, and BM denotes a full-section excavator. The temporary earth retaining plate connection device 51 includes a connection device 53 mounted below the central shaft 52 and upper and lower two-stage gripper devices 54 and 55 mounted on the upper and lower middle portions of the central shaft 52, and the upper gripper device 54 and the central portion. Two central shaft jacks 56, 56 connecting the shaft 52 and two connecting machine moving jacks 5 connecting the upper and lower gripper devices 54, 55.
7, 57.

The gripper devices 54, 55 have four slide arms 59, 59,... Projecting radially from an annular frame 58 as shown in FIG.
Segment-shaped spreaders 60, 6
0, ... are fitted. The spreaders 60, 60, ... can be expanded and contracted in the radial direction by the operation of the spreader jacks 61, 61, ..., and the V-shaped claws 62, 62, ... at the tips are connected to the joints between the upper and lower flanges of the existing temporary retaining plates 41, 41. The grippers 54 and 55 are fixed by being locked to the vertical ribs. Also, by controlling the amount of expansion and contraction of the four spreader jacks 61, 61,... To a fixed value, the deformed existing temporary retaining plates 41, 41,.

As shown in FIG. 8, the connecting machine 53 includes a slewing bearing 63 with an external gear provided on a lower outer peripheral surface of the central shaft 52.
And can be rotated in the circumferential direction by a hydraulic motor 65.
The connecting machine 53 is, as shown in FIG.
6, a temporary retaining plate holding device 67, a temporary retaining plate moving device 68, fastening devices 69 and 70, and temporary retaining plate expanding devices 71 and 71.

The temporary retaining plate receiving device 66 corrects the position of the temporary retaining plate 41 supplied by the temporary retaining plate supply device 1 to a fixed position on the receiving device 66, as shown in FIGS.
As shown in FIG. 2, positioning levers 73 are pivotally mounted on the lower surfaces of both ends of the receiving table 72. The positioning levers 73, 73 are rotated upward by the hydraulic cylinders 74, 74 and rise up to the outer peripheral surface side of the temporary retaining plate 41.

A pair of slide rods 75, 75 are mounted on the upper surface of the receiving table 72 toward the left and right center directions of the temporary retaining plate 41. The slide rods 75, 75 driven by the hydraulic cylinders 76, 76 Temporary retaining plate 41
The center longitudinal rib 47 is pressed from the left and right to correct the left and right position of the temporary retaining plate 41, and the temporary retaining plate 41 is brought into contact with the positioning levers 73, 73 to correct the front and rear position.

FIG. 13 and FIG.
As shown in FIG. 4, pinion gears 78, 78, a double-sided rack 79, and a hydraulic cylinder are disposed at positions facing the gripping metal fittings 48 fixed to the central vertical ribs 47 of the temporary soil retaining plate 41 and coaxial with the clamp claws 77, 77. 80. The opposed pinion gears 78 with clamp claws are meshed with the double-sided rack 79, respectively, and the hydraulic cylinder 80
By moving the double-sided rack 79 forward, the clamp pawl 7
When the racks 79 are opened and the double-sided rack 79 is retracted, the clamp claws 77 press the grip metal 48. As shown in FIG. 3, a V-shaped groove is provided on the left and right end surfaces of the grip metal 48, and the clamp claws 77 are formed so as to engage with the V-shaped groove.

The temporary retaining plate moving device 68 moves the temporary retaining plate gripping device 67 in the radial direction and the axial direction, and as shown in FIGS. The temporary retaining plate gripping device 67 is attached via a hydraulic cylinder 83 for lifting and lowering mounted on the bracket frame 81.
Is moved in the axial direction. As shown in FIGS. 11 and 12, the bracket frame 81 is attached to the turning ring 64 via a radial guide rod 84, a slide guide 85, and a hydraulic cylinder 86.
6, the temporary earth retaining plate holding device 67 is moved to the front receiving position and the rear standby position.

The axial fastening device 69 is constituted by four hydraulic socket wrenches. As shown in FIGS. 15 and 16, rails 90 are provided on the left and right sides of a plate 89 attached to a connecting machine frame 87 via a hinge 88. , 90, and a hydraulic socket wrench support frame 91 is engaged with the rails 90, 90. The plate 89 is erected by the hydraulic cylinder 92 or turned over to the retracted position at the rear.

The hydraulic socket wrench support frame 91 is
The feed screw 93 is screwed to a feed screw 93 disposed on the plate 89 in the vertical direction. The feed screw 93 is driven by a stepping motor 94 fixed on an upper portion of the plate 89, and is provided with a hydraulic socket wrench support frame 91 and a hydraulic socket wrench 9.
5 is raised and lowered. The hydraulic socket wrench 95 includes a hydraulic motor 96, a speed reducer 97a, a power transmission unit 97b, and a socket wrench 98.

FIGS. 17 and 18 show a circumferential fastening device 70 which has the same structure as the axial fastening device 69, is mounted on the connecting machine frame 87 in a horizontal position, and moves from a position shown by a chain line to a position shown by a solid line. While approaching the side end plate of the temporary earth retaining plate 41 by the stepping motor 94,
The bolt 45 is fastened by the hydraulic socket wrench 95.

As shown in FIG. 10, the temporary soil retaining plate expanding device 71 is disposed at a position displaced 60 ° to the right and left of the temporary soil retaining plate gripping device 67, and is used to assemble the final temporary retaining retaining plate in one ring assembly process. The gap is expanded by pressing the left and right temporary retaining plates at the mounting position to secure a clearance for inserting the final temporary retaining plate.

As shown in FIGS. 19 and 20, the temporary retaining plate expanding device 71 is composed of an elevating device 99, an expanding device 100 and a clamping device 101, and the clamping device 101
Is one of a pair of clamp claws 103 mounted on the clamp frame 102 and a motor 104 and a feed screw 10
5 to move the holding mechanism 48 of the temporary retaining plate 41.

The clamp device 101 is attached to the elevating device 99 via the slide arm 106 of the expansion device 100, and expands and contracts in a radial direction by a hydraulic cylinder 107 interposed on the slide arm 106. The base end of the slide arm 106 is connected to the guide shaft 108 of the elevating device 99.
And the upper and lower frames 109, 11 of the lifting device 99.
A roller chain 113 hung on the sprockets 111 and 112 provided on the base 0 is locked to the base end. The power of the lifting hydraulic motor 114 is transmitted to a sprocket (not shown) coaxial with the lower sprocket 112 via a roller chain 115, and moves the sliding arm 106 and the clamp device 101 up and down in parallel with the shaft.

Next, the steps of temporary soil retaining by the temporary soil retaining plate supply device 1 and the temporary soil retaining plate connecting device 51 will be described. First, the stock floor 21 of the temporary earth retaining plate supply device 1 shown in FIG.
The six temporary retaining plates 41, 41,... For the ring are placed.
Then, the leading temporary retaining plate 41 is mounted on the carriage 18 by the jib crane 22. At this time, the gauge pins 34, 34,... Of the bogie 18 and the concave nut 4
If the numbers 4, 44,... Do not match, the temporary soil retaining plate 41 is excluded as a defective product.

If the bolt hole position is proper, the bolt hole position is inspected by the circumferential bolt hole position inspection device 31 on the stock floor side, and if the hole position is proper, the bogie 18 is run to support the temporary retaining plate support. It is transferred to the lower part of the frame 11. Subsequently, the temporary retaining plate supporting frame 11 is lowered by the temporary retaining plate lifting winch 16, and the concave portions 23, 23,... On the lower end surface of the frame 11 and the convex nuts 43, 43,. If they do not match, the temporary earth retaining plate 4
1 is determined to be defective. Further, the bolt hole position on the other side is inspected by the circumferential bolt hole position inspection device 31 on the end point side of the bogie 18.

If there is no problem in all bolt hole positions, the bolt fastening machine 29 is horizontally moved toward the temporary retaining plate 41,
The hydraulic socket wrench 30 is lowered and the bolt 25 of the temporary retaining plate support frame 11 is moved to the temporary retaining plate 4 as shown in FIG.
Fasten to 1. Subsequently, the bolt fastening machine 29 returns to the standby position, the temporary retaining plate support frame 11 is raised, and the bogie 18 is returned to the stock floor 21 side. Then, the temporary soil plate supporting frame 11 and the temporary soil plate 41 are lowered into the pit by the temporary soil plate lifting winch 16, and the temporary soil plate 41 is landed on the receiving table 72 of the temporary soil plate connecting device 51.

Then, the positioning levers 73, 73 of the temporary retaining plate receiving device 66 shown in FIG. 11 are raised, and the slide rods 75, 75 are extended to correct the position of the temporary retaining plate 41. Subsequently, the temporary retaining plate gripping device 67 is driven forward to grip the grip metal 48 of the temporary retaining plate 41 by the clamp claws 77, 77, and as shown in FIG. The wrench 95 is lowered, and the bolt 25 of the temporary retaining plate support frame 11 is rotated to release the fastening. Then, as shown in FIG. 23, the axial fastening device 69 retreats to the standby position, and the temporary retaining plate supporting frame 11 is raised to the ground by the temporary retaining plate lifting winch 16 of the temporary retaining plate supply device 1. Then, while the positioning levers 73, 73 of the temporary retaining plate receiving device 66 are turned down, the temporary retaining plate moving device 68 slightly raises the temporary retaining plate 41 and retracts the temporary retaining plate 41 toward the center of the shaft, thereby rotating the turning ring 64. Then, the temporary earth retaining plate 41 is moved toward the wellhead wall as shown in FIG. 24.

Then, the temporary retaining plate 41 is raised to fit the convex nuts 43, 43,... On the upper end surface into the concave nuts 44, 44,. The fastening device 69 stands up and the axial bolts 45, 45,.
To conclude. When assembling the second and subsequent temporary retaining plates for one ring, the circumferential fastening device 70 is rotated in the horizontal direction and the circumferential bolt 45 is fastened.

After the fastening, the fastening devices 69 and 70 are retracted, and the temporary retaining plate gripping device 67 releases the gripping metal 48 and is pulled in toward the center of the tunnel, and is again turned to the receiving position of the temporary retaining plate 41 and sequentially temporary. The earth retaining plate 41 is assembled.

When assembling the final temporary retaining plate for one ring, the central shaft jacks 56, 56 are connected to each other as shown in FIGS.
Then, the central shaft 52 and the connecting machine 53 are lowered by almost one ring as shown in FIG. 25, and the first and fifth temporary earth retaining plate expanding devices 71, 71 shown in FIG. The left and right existing temporary retaining plates corresponding to are expanded to secure the insertion space. Then, the central shaft jacks 56, 56 are extended, and as shown in FIG. 24, the central shaft 52 is raised to insert the final temporary retaining plate 41 into a predetermined position from below, and the axial fastening device 69 and the circumferential fastening device are inserted. The bolts 45, 45,... Are connected by 70 to complete the assembly of the temporary retaining plate for one ring.

After the assembly of one ring is completed, the temporary earth retaining plate connecting device 51 descends by one ring to assemble the next ring. The lowering operation of the temporary earth retaining plate connecting device 51 is shown in FIGS. It will be described according to.

First, the central shaft jack 5 is moved from the state shown in FIG.
The central shaft 52 is lowered as shown in FIG. Next, as shown in FIG. 26, the slide arms 59, 59,... Of the lower gripper device 55 are contracted to disengage the spreaders 60, 60,. Connecting machine moving jack 5
7, 57 are extended to lower the lower gripper device 55.

Then, as shown in FIG. 28, the lower slide arms 59, 59,.
Are engaged with the existing temporary retaining plate 41, and then the slide arm 5 of the upper gripper device 54 as shown in FIG.
, Are contracted, and as shown in FIG. 30, the central shaft jacks 56, 56,... Are extended, and the connecting machine moving jacks 57, 57 are contracted to lower the upper gripper device 54. Then, as shown in FIG. 31, the upper slide arms 59 are extended to engage the spreaders 60, 60,... With the existing temporary retaining plate 41, thereby lowering the temporary retaining plate connecting device 51 by one ring. The process is completed, and the next stage temporary assembling plate can be assembled.

In this way, all steps of carrying in the temporary earth retaining plate from the ground, transferring it to the connecting machine, and assembling the temporary earth retaining plate are performed unattended. It should be noted that the present invention is not limited to the one embodiment described above, and various modifications can be made within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

[0049]

As described in detail in the above embodiment,
According to the first aspect of the present invention, the supporting frame connected to the winch device and the temporary soil retaining plate are connected by bolts, and the temporary soil retaining plate is suspended and supplied into the shaft. The occupied space can be reduced as much as possible, and the possibility of a temporary accidental retaining plate falling accident can be eliminated.

According to the second aspect of the present invention, the bolt holes of the temporary soil retaining plate are inspected before the temporary soil retaining plate is transferred to the temporary earth retaining plate support frame by the bogie, so that the defective temporary soil retaining plate is put into the pit. It can be found before carrying in, and work delays due to defective products can be prevented.

According to the third aspect of the present invention, a series of steps such as positioning of the temporary earth retaining plate carried into the mine, fastening of bolts, and lowering of the connecting machine after assembling one ring can be carried out unattended. By using the temporary earth retaining plate supply device and the temporary earth retaining plate connection device, automatic unmanned construction of the temporary earth retaining portion of the shaft can be realized, which is effective in improving safety and saving labor.

[Brief description of the drawings]

FIG. 1 is a side view of a temporary retaining plate supply device.

FIG. 2 is a plan view of a temporary retaining plate supply device.

FIG. 3 is a front view of a temporary retaining plate supply device.

FIG. 4 is a partially cutaway side view of the temporary earth retaining plate supply device.

5 (a), 5 (b) and 5 (c) are cross-sectional views of relevant parts showing a procedure for fastening a temporary retaining plate in the axial direction.

FIGS. 6 (a), (b) and (c) are cross-sectional views of relevant parts showing a procedure for fastening a temporary retaining plate in the circumferential direction.

FIGS. 7 (a), (b) and (c) are cross-sectional views of relevant parts showing a procedure for fastening a temporary retaining plate support frame and a temporary retaining plate.

FIG. 8 is a cross-sectional view of a shaft showing a temporary earth retaining plate connection device and a full-section excavator.

FIG. 9 is a view taken along line AA of FIG. 8;

FIG. 10 is a view taken along line BB of FIG. 8;

FIG. 11 is a side sectional view of a temporary retaining plate receiving device and a temporary retaining plate moving device.

FIG. 12 is a plan view of the temporary retaining plate receiving device.

FIG. 13 is a side sectional view of the temporary earth retaining plate gripping device.

FIG. 14 is a view taken along line CC of FIG. 13;

FIG. 15 is a side view of the axial fastening device.

FIG. 16 is a view taken along line DD in FIG. 15;

FIG. 17 is a plan view of a circumferential fastening device.

FIG. 18 is a view taken along line EE in FIG. 17;

FIG. 19 is a side view of the temporary earth retaining plate expanding device.

FIG. 20 is a view taken along the line FF in FIG. 19;

FIG. 21 is an essential part side view showing a bolt fastening step of the temporary retaining plate supply device;

FIG. 22 is an essential part side view showing a receiving step of the temporary soil retaining plate connection device by the temporary soil retaining plate receiving device.

FIG. 23 is a side view showing a first stage of a connection process of the temporary earth retaining plate connection device.

FIG. 24 is a side view showing a second stage of the connection process of the temporary earth retaining plate connection device.

FIG. 25 is a side view showing the first stage of the descending step.

FIG. 26 is a side view showing a second stage of the descending step.

FIG. 27 is a side view showing a third stage of the descending step.

FIG. 28 is a side view showing a fourth step of the descending step.

FIG. 29 is a side view showing a fifth step of the descending step.

FIG. 30 is a side view showing a sixth step of the descending step.

FIG. 31 is a side view showing a completed state of the lowering step.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temporary retaining plate supply device 2 Vertical shaft 11 Temporary retaining plate support frame 12 Slide guide 16 Temporary retaining plate elevating winch 18 Bogie 21 Stock floor 23 Concave 24 Bolt hole 25 Bolt 29 Bolt fastening machine 31 Circumferential bolt hole position inspection device 32, 34 Gauge pin 41 Temporary retaining plate 42 Hole 43 Convex nut 44 Recessed nut 45 Bolt 46 Nut 48 Gripping metal fitting 51 Temporary retaining plate connecting device 52 Central shaft 53 Connecting machine 54, 55 Gripper device 56 Central shaft jack 57 Connecting machine moving jack 66 Temporary Soil plate receiving device 67 Temporary soil plate holding device 68 Temporary soil plate moving device 69 Axial fastening device 70 Circumferential fastening device 71 Temporary soil plate expanding device

────────────────────────────────────────────────── ─── Continued on the front page (73) Patent owner 000207780 Taitoyo Construction Co., Ltd. 1-24-4 Shinkawa, Chuo-ku, Tokyo (73) Patent owner 391035795 Shiraishi Co., Ltd. 3-4-1 Marunouchi, Chiyoda-ku, Tokyo (72) Inventor Nobuo Oda 2-3-4 Yokota, Atsuta-ku, Nagoya-shi, Aichi Chubu Electric Power Co., Inc.Central Transmission and Substation Construction Works (72) Inventor Tomoo Mimura 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Stock Association (56) References JP-A-6-42284 (JP, A) JP-A-4-57588 (JP, A) JP-A-4-112987 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02D 17/02-17/08 E21D 1/08 E21D 5/00-5/12

Claims (3)

(57) [Claims] A trolley for transporting a segment-shaped temporary soil retaining plate provided with bolt holes on the upper, lower, left and right end surfaces from a stock yard to immediately below a winch device, and a winch device for suspending the transported temporary soil retaining plate into a shaft. In the temporary soil retaining plate supply device, female screws are formed in the bolt holes of the temporary soil retaining plate, and the connecting bolts are screwed into the bolt holes on the lower end surface and one of the left and right end surfaces from the inside, respectively. The temporary soil retaining plate support frame is engaged with the guide rope installed in the pit and the mine, the support frame is suspended by the winch device, and the lower end surface of the support frame corresponds to the bolt hole on the upper end surface of the temporary soil retaining plate. A temporary earth retaining plate supply device provided with a bolt hole, wherein a bolt is loosely fitted into the bolt hole from above, and provided with a fastening device for the bolt. A temporary soil retaining plate supply device, wherein the temporary soil retaining plate is suspended by the winch device and supplied into the shaft. 2. The upper and lower sides of the temporary retaining plate are raised, and the periphery of the other bolt hole is symmetrically depressed to form a concave and convex portion for positioning. A hole position inspection for providing a reference convex portion or a reference concave portion corresponding to the convex portion or the concave portion, respectively, at a lower end surface of the bogie, and inspecting the positions of bolt holes on the right and left end surfaces of the temporary earth retaining plate at both end portions of the traveling range of the bogie. The temporary soil retaining plate supply device according to claim 1, wherein an apparatus is installed. 3. A temporary earth retaining member for supporting a temporary earth retaining plate supplied into a shaft and rotating in a circumferential direction of the shaft, moving the temporary earth retaining plate in a radial direction of the shaft and installing the temporary earth retaining plate at a target position on a pit wall. In the plate connecting device, a fastening device for fastening the bolts in the axial direction and the circumferential direction previously mounted on the temporary soil retaining plate, an expanding device for pressing the existing temporary soil retaining plate in the radial direction, and a radial direction of the shaft. An upper and lower telescopic two-stage gripper device is provided, and a lifting device such as a hydraulic cylinder is interposed between each of the two-stage gripper device and the temporary retaining plate connection device main body, and the two-stage gripper device is connected to the temporary retaining plate. A temporary earth retaining plate connecting device, which is formed so as to be able to move up and down separately from the connecting device main body.