JP2004052232A - Timbering building-up device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timbering building-up device for efficiently and safely installing lower half timbering under upper half timbering. <P>SOLUTION: This timbering building-up device 3 builds up the timbering along the wall surface of a tunnel, and has a sandwiching part 21 for sandwiching or releasing the timbering and arms 12 and 2 installed in a device body 11, holding the sandwiching part 21 and varying the angle and/or position of the sandwiching part 21 to the device body 11. The timbering building-up device 3 can be constituted by installing an attachment 2 having the sandwiching part 21, a rotary part 22 for rotating the sandwiching part 21 around itself and a movable part 23 for varying an angle relative to an arm 12 of the sandwiching part 21 on the arm 21 of a working vehicle 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a shoring construction device for shoring a shoring on a wall surface of a tunnel constructed by a mountain tunnel method.
[0002]
[Prior art]
When constructing a tunnel by the mountain tunnel method, the upper half of the face is excavated, the upper half support is attached to this inner surface, and the lower half of the face is excavated, and the lower half is Connect Shoring.
[0003]
Conventionally, when a lower half support is erected below an upper half support, for example, as shown in FIGS. 4A to 4C, a lifting machine such as a hydraulic excavator with a crane is used, and a wire rope or the like is used. The lower half shoring Sb is lifted by the rope R, and the lower half shoring Sb is manually pushed up to a position immediately below the upper half shoring St while being moved below the upper half shoring St. And the bolt R, the rope R was removed.
[0004]
[Problems to be solved by the invention]
However, when the cross section of the tunnel is large, the size of the shoring increases and the weight increases, which makes it difficult to perform the lifting work by human power. As a result, the cycle time for installing one shoring increases.
In addition, since ropes are used during the transportation of the lower shoring, work requiring skill such as slinging is required, and the lower shoring is moved by a crane and the rope is removed after the lower shoring is moved There are many dangerous operations such as work.
In addition, since the worker performs work at the face, it takes time and effort to perform monitoring for preventing occurrence of a disaster such as falling rocks.
[0005]
An object of the present invention is to provide a shoring installation device to which a shoring (particularly, a lower half shoring) can be efficiently and safely attached.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a shoring construction device 3 according to the first aspect of the present invention is, for example, as shown in FIGS. A holding portion (clamp) 21 which can hold and release the shoring);
Arms (arms) 12 and (attachments) 2 attached to the device main body 11 and capable of holding the holding portion 21 and changing the angle and / or position of the holding portion 21 with respect to the device main body 11 It is characterized by having.
[0007]
Here, the holding portion may be held by the arm portion in a state in which play is provided in which the angle and / or the position can be finely adjusted. With this configuration, the support is held by the holding portion, the angle and / or the position are changed while the support is stably held, and the support is stood on the wall of the tunnel. The position of the building can be fine-adjusted by moving it manually.
Further, a lock function for locking the support in a state where the supporter is held by the holding portion may be provided in a state in which the lock can be operated by an operating device of a cockpit of the apparatus main body. According to this structure, when the supporter is clamped by the holding portion and the angle and / or the position is changed while the supporter is stably held, and the supporter is built on the wall surface of the tunnel, the supporter holds the supporter. Can be prevented from coming off.
[0008]
According to the first aspect of the present invention, a holding portion capable of holding and releasing a shoring attached along the wall surface of the tunnel, and a holding portion attached to the apparatus main body for holding the holding portion and holding the holding portion And an arm capable of changing the angle and / or the position of the support body with respect to the apparatus main body, so that the supporter is held by the holding portion, and the angle and / or the position is changed while the supporter is stably held. Then, it can be built on the wall of the tunnel.
[0009]
Therefore, in the work of lower half shoring, the lower half shoring is erected at a predetermined position below the upper half shoring with the shoring erection device, and then fastened to the upper half shoring with bolts etc. It is only necessary for the worker to enter the face only when performing the work. Therefore, when the worker enters the face, labor and time required for monitoring for preventing occurrence of a disaster due to falling rocks and the like can be reduced.
[0010]
Also, instead of lifting the lower half support with a hydraulic shovel with a crane and transporting it as in the past, the lower half support is operated by holding the lower half support at the holding part, Since it moves and is built below the upper half support, it does not require skilled work such as slinging work, while moving the lower half support by crane and removing the rope after moving the lower support. Dangerous work can be omitted.
[0011]
Further, since the lower half support is built by the operation of the arm instead of the human power, the cycle time for installing the lower half support can be shortened. This effect becomes more pronounced as the diameter of the tunnel increases and the length and weight of the shoring increases.
[0012]
The invention according to claim 2 is, for example, as shown in FIGS. 2 and 3, in the shoring / building device 3 according to claim 1,
A construction work vehicle (hydraulic shovel) 1 including the arm portion (arm) 12;
The holding part (clamp) 21 attached to the arm part 12 of the construction work vehicle 1, a rotating part 22 for rotating the holding part 21 around itself, and an angle of the holding part with respect to the arm part And an attachment 2 having a movable portion 23 for changing the distance.
Here, examples of the construction work vehicle include a shovel car such as a hydraulic shovel, a wheel loader, a bulldozer, and a rock drill.
[0013]
According to the second aspect of the invention, the same effect as the first aspect of the invention can be obtained, and the attachment attached to the arm of the construction work vehicle rotates the holding portion around itself. Since the rotating portion and the movable portion that changes the angle of the holding portion with respect to the arm portion are provided, the rotating portion and / or the movable portion are operated while holding the support by the holding portion. The angle and / or the position can be changed while the is stably held, so that it can be reliably installed on the wall surface of the tunnel.
In addition, by appropriately operating the rotating part and / or the movable part, the erected position of the lower half support can be adjusted.
In addition, by attaching the attachment to the construction work vehicle, the invention according to claim 1 can be easily implemented without manufacturing a dedicated machine.
Further, the attachment of the construction work vehicle can be changed, and the construction work vehicle can be used for other work such as excavation of the ground.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the shoring installation device 3 described in the present embodiment is attached to a tip end of an arm (arm) 12 of a hydraulic excavator (construction work vehicle) 1, as shown in FIG. 2 and is used to build a lower half support Sb below an upper half support St of a tunnel excavated by a mountain tunnel method (see FIG. 4). Things.
[0015]
As shown in FIGS. 2 and 3, the attachment 2 includes a clamp (clamping portion) 21 that can clamp and release the lower half support Sb, and attaches the clamp 21 around an axis X that is attached to the arm 12. , A movable part 23 for rotating the clamp 21 about an axis Y perpendicular to the mounting axis X, and a mounting part 24 for mounting the attachment 2 to the arm 12 of the hydraulic shovel 1. ing.
[0016]
Specifically, as shown in FIG. 3, the clamp 21 is a pair of scissor-like members rotatably attached to a pin 21a provided on a clamp base 21b. The clamp 21 is opened and closed by the expansion and contraction of the hydraulic jack 21J, and the gripper 21g at the tip of the clamp 21 holds the web portion of the lower half support.
A load cell (not shown) is attached to the jack 21J so as to detect whether or not the clamping pressure of the lower half support by the clamp 21 is equal to or higher than a predetermined value.
[0017]
The clamp base 21b is fixed to the movable part 23 via the rotating part 22. The rotation of the stepping motor 22M causes the clamp 21 to rotate around itself (the axis X).
[0018]
The movable portion 23 is rotatably attached to the attachment base 24 with a pin 23a. The movable portion 23 swings about the pin 23a as a center of rotation with respect to the attachment base 24 when the hydraulic jack 23J attached to the pin 23b expands and contracts.
[0019]
The operations of the clamp 21, the rotating part 22, and the movable part 23 can be controlled by an operating device (not shown) provided in the apparatus main body 11 of the excavator 1. Further, the operating device has a lock function for locking the lower half support in a state where the clamping pressure is equal to or higher than a predetermined value in a state where the lower half support is clamped by the clamp 21.
[0020]
Also, in a state where the rotating part 22 and the movable part 23 are fixed, the clamp 21 is held by the arm 12 in a state where play is provided so that the angle and / or the position thereof can be finely adjusted. Has become.
[0021]
As described above, according to the shoring installation device 3 described in the present embodiment, the clamp 21 capable of holding and releasing the lower half shoring attached along the wall surface of the tunnel, and the device of the excavator 1 Since the arm 21 and the attachment 2 are attached to the main body 11 and can change the angle and / or the position of the clamp 21 with respect to the apparatus main body 11 while holding the clamp 21, the lower half support Sb is clamped by the clamp 21. The lower half support can be stably held, and the angle and / or position can be changed to be installed on the wall of the tunnel.
[0022]
Therefore, in the lower half shoring work, after the lower half shoring is erected at a predetermined position below the upper half shoring by the shoring erection device 3, this is fixed by the upper half shoring and bolts. Only at the time of fastening work, the worker only needs to enter the face. Therefore, when the worker enters the face, labor and time required for monitoring for preventing occurrence of a disaster due to falling rocks and the like can be reduced.
[0023]
Also, instead of lifting and carrying the lower half support by a hydraulic excavator with a crane or the like as in the related art, the lower half support is operated by operating the arm 11 while the lower half support is sandwiched by the clamp 21. Since it moves and is built below the upper half support, it does not require skilled work such as slinging work, while moving the lower half support by crane and removing the rope after moving the lower support. Dangerous work can be omitted.
[0024]
Further, since the lower half support is built by the operation of the arm instead of the human power, the cycle time for installing the lower half support can be shortened. This effect becomes more pronounced as the diameter of the tunnel increases and the length and weight of the shoring increases.
[0025]
In addition, since the rotating part 22 for rotating the clamp 21 around itself and the movable part 23 for changing the angle of the clamp 21 with respect to the arm 12 are provided, the lower part is supported by the clamp 21 while being clamped. By operating the moving part 22 and / or the movable part 23, it is possible to reliably change the angle and / or the position while stably holding the lower half support, and to erected the lower half support on the wall surface of the tunnel.
In addition, by appropriately operating the rotating part 22 and / or the movable part 23, the erected position of the lower half support can be adjusted.
According to the second aspect of the invention, the same effect as that of the first aspect of the invention can be obtained, and the angle between the rotating portion for rotating the holding portion around itself and the arm portion is set. Since the movable portion is provided with a movable portion, the rotating portion and / or the movable portion are operated while holding the support by the holding portion, so that the angle and / or the position of the support can be stably held. Can be reliably changed to be built on the wall of the tunnel.
In addition, by appropriately operating the rotating part and / or the movable part, the erected position of the lower half support can be adjusted.
[0026]
Further, since the clamp 21 is held by the arm 12 in a state where play is provided so that the angle and / or the position can be finely adjusted, the lower half support is clamped by the clamp 21, and the lower half support The angle and / or the position are changed while the is stably held, and then the clamp is mounted on the wall of the tunnel, and then the clamp 21 is manually moved with respect to the arm 12 to finely adjust the erected position. Can be.
Specifically, after the lower half shoring is erected below the upper half shoring by the present shoring and erection device 3, the clamps 21 and the lower half shoring sandwiched by the lower half shoring are manually applied to the arm 12. As a result, the positions of the bolt holes drilled in the end plates of the lower half support and the upper half support are aligned with each other, and the lower half support and the upper half support can be fastened to each other with bolts.
[0027]
Further, since the clamp 21 is provided with a lock function for locking the lower half support in a state of being clamped, the lower half support is clamped by the clamp 21 and the lower half support is stably held. When the angle and / or the position are changed to be installed on the wall surface of the tunnel, the support can be prevented from coming off the holding portion.
[0028]
Further, according to the attachment 2 described in the present embodiment, by attaching the attachment 2 to the general-purpose hydraulic excavator 1, the above-mentioned shoring installation device 3 can be easily configured without manufacturing a dedicated machine. .
In addition, the attachment of the hydraulic excavator 1 can be replaced, and the hydraulic excavator 1 can be used for other work such as excavation of the ground.
[0029]
It should be noted that the present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
In addition, it goes without saying that the specific detailed structure and the like can be appropriately changed.
[0030]
Further, a sensor is provided on each of the opposing surfaces of the two holding plates, and when the support placed on the first convex portion 11c and the second convex portion 12c is sandwiched between the two holding plates, this sensor is used. In response, the movement of the other holding plate may be automatically stopped.
[0031]
【The invention's effect】
According to the first aspect of the present invention, a holding portion capable of holding and releasing a shoring attached along the wall surface of the tunnel, and a holding portion attached to the apparatus main body for holding the holding portion and holding the holding portion And an arm capable of changing the angle and / or the position of the support body with respect to the apparatus main body, so that the supporter is held by the holding portion, and the angle and / or the position is changed while the supporter is stably held. Then, it can be built on the wall of the tunnel.
[0032]
Therefore, in the work of lower half shoring, the lower half shoring is erected at a predetermined position below the upper half shoring with the shoring erection device, and then fastened to the upper half shoring with bolts etc. It is only necessary for the worker to enter the face only when performing the work. Therefore, when the worker enters the face, labor and time required for monitoring for preventing occurrence of a disaster due to falling rocks and the like can be reduced.
[0033]
Also, instead of lifting the lower half support with a hydraulic shovel with a crane and transporting it as in the past, the lower half support is operated by holding the lower half support at the holding part, Since it moves and is built below the upper half support, it does not require skilled work such as slinging work, while moving the lower half support by crane and removing the rope after moving the lower support. Dangerous work can be omitted.
[0034]
Further, since the lower half support is built by the operation of the arm instead of the human power, the cycle time for installing the lower half support can be shortened. This effect becomes more pronounced as the diameter of the tunnel increases and the length and weight of the shoring increases.
[0035]
According to the second aspect of the invention, the same effect as the first aspect of the invention can be obtained, and the attachment attached to the arm of the construction work vehicle rotates the holding portion around itself. Since the rotating portion and the movable portion that changes the angle of the holding portion with respect to the arm portion are provided, the rotating portion and / or the movable portion are operated while holding the support by the holding portion. The angle and / or the position can be changed while the is stably held, so that it can be reliably installed on the wall surface of the tunnel.
Further, by appropriately operating the rotating part and / or the movable part, the erected position of the lower half support can be adjusted.
In addition, by attaching the attachment to the construction work vehicle, the invention according to claim 1 can be easily implemented without manufacturing a dedicated machine.
Further, the attachment of the construction work vehicle can be changed, and the construction work vehicle can be used for other work such as excavation of the ground.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of a shoring installation device according to the present invention.
FIG. 2 is a schematic view of an example of a shoring installation device according to the present invention as viewed from the front.
FIG. 3 is a front view of an attachment used in an example of the shoring installation device according to the present invention.
FIG. 4 is a schematic view showing a conventional lower half support erection procedure.
[Explanation of symbols]
1 hydraulic excavator (work vehicle for construction)
2 Attachment 3 Shoring construction equipment 11 Equipment main body 12 Arm (arm)
21 Holding part (clamp)
22 Rotating part 23 Movable part Sb Lower half support St Upper half support W Tunnel wall

Claims (2)

A holding portion capable of holding and releasing a shoring installed along the wall of the tunnel,
An arm mounted on the device main body, the arm holding the holding portion and being capable of changing an angle and / or a position of the holding portion with respect to the device main body. The shoring installation device according to claim 1,
A construction work vehicle having the arm portion,
Attached to the arm portion of the construction work vehicle, the holding portion includes a holding portion, a rotating portion that rotates the holding portion around itself, and a movable portion that changes an angle of the holding portion with respect to the arm portion. And an attachment for mounting.

Images