Tunnel arch frame primary support feet-lock bolt driving device

Abstract

The utility model discloses a tunnel arch frame primary support feet-lock bolt driving device which comprises an arc-shaped base frame, arc-shaped bases are installed at the two ends of the arc-shaped base frame, a rotating frame is connected to the two arc-shaped bases in a sliding mode, a limiting cylinder is installed on the rotating frame through a connecting assembly, and the limiting cylinder is connected with the arc-shaped bases in a sliding mode. The arc-shaped base frame is connected with the rotating frame through an angle transmission assembly; a mounting groove is formed in the lower end of the arc-shaped base frame, and a clamping assembly is mounted in the mounting groove. The device is ingenious in structure and reasonable in design, the device can be fixed to tunnel steel arches of different sizes, meanwhile, the rotating angle of the rotating frame can be monitored in real time, so that the angle of the limiting cylinder is adjusted, and then the angle of the feet-lock bolt is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel arch initial support locking foot anchor rod driving device. Background Art

[0002] In the initial stage of tunnel construction, steel arch frames are required for support. After the steel arch frames are installed, locking anchor rods need to be installed in time. The conventional installation method is to first drill holes on the working surface manually with a handheld pneumatic drill, and then install locking anchor rods at the drilled holes. Since a large number of locking anchor rods are required to be installed, and there are requirements for the hole position and the downward tilt angle of the locking anchor rods, in actual construction, in the traditional manual drilling process, the angle control of the locking anchor rods is usually through human visual judgment, and more reliance is placed on the experience of on-site construction personnel to carry out construction, resulting in deviations in the construction angle of the hole position. In the later stage, the steel frame may sink or converge, resulting in deformation of the initial support, which poses certain safety hazards. Utility Model Content

[0003] The utility model aims to solve the problems in the background technology and proposes a tunnel arch initial support locking foot anchor rod driving device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A device for driving anchor rods for initial support of tunnel arch frame, comprising an arc-shaped base frame, arc-shaped bases are installed at both ends of the arc-shaped base frame, a rotating frame is slidably connected to the two arc-shaped bases, a limiting cylinder is installed on the rotating frame through a connecting assembly, and the arc-shaped base frame and the rotating frame are connected through an angle transmission assembly;

[0006] A mounting groove is provided at the lower end of the arc-shaped base frame, and a clamping component is installed in the mounting groove.

[0007] Preferably, the connecting assembly comprises two symmetrically arranged connecting frames, and each of the connecting frames is connected to the limiting cylinder via a connecting rod.

[0008] Preferably, the angle transmission assembly includes a worm, the rotating frame is equipped with a mounting frame, a knob 1 is installed on the mounting frame through a rotating shaft, and the worm is installed on the rotating shaft, a worm gear frame is installed on the outer side wall of the arc-shaped base, and the worm gear frame is engaged with the worm.

[0009] Preferably, the clamping assembly includes a bidirectional threaded rod, and the bidirectional threaded rod is horizontally installed in the mounting groove, one end of the bidirectional threaded rod passes through one of the arc-shaped bases and is installed with knob 2, and two sections of threads are symmetrically opened on the bidirectional threaded rod, and the directions of the two sections of threads are opposite, each section of the thread is threadedly connected with a splint, and the splint is slidably connected in the mounting groove.

[0010] Preferably, each of the arc-shaped bases is provided with an arc-shaped limit hole, two limit rods are symmetrically installed on the rotating frame, and each limit rod is slidably connected in the arc-shaped limit hole at a corresponding position, and the lower end of each limit rod is fixedly connected to a limit block, and the limit block is slidably connected to the arc-shaped base.

[0011] Preferably, each of the arc-shaped bases is provided with a scale on its end surface away from the arc-shaped base frame, and pointers are provided at both ends of the rotating frame, and the pointers are in contact with the end surfaces of the arc-shaped bases.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Use the knob 2 and the bidirectional threaded rod to drive the two clamps to move relative to each other. Install the device on the tunnel steel arch frame by controlling the distance between the two clamps. After the anchor rod is inserted, remove the device from the tunnel steel arch frame through the clamps and remove the device along the center line of the limit cylinder.

[0014] 2. The angle of the rotating frame can be rotated by knob 1, worm and worm gear seat. The angle of the rotating frame can be monitored in real time by limit rod, limit block, arc limit hole, pointer and scale to adjust the angle of the limit cylinder and accurately control the angle of the locking foot anchor rod.

[0015] To sum up, the utility model has an ingenious structure and a reasonable design. The device can be fixed on tunnel steel arch frames of different sizes. At the same time, it can monitor the rotation angle of the rotating frame in real time to adjust the angle of the limit cylinder, thereby accurately controlling the angle of the locking foot anchor rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a tunnel arch initial support locking foot anchor rod driving device proposed by the utility model;

[0017] Figure 2 This is a visual diagram from another perspective of a tunnel arch initial support locking foot anchor rod driving device proposed by the utility model;

[0018] Figure 3 This is an enlarged view of the structure of the rotating frame part of the tunnel arch initial support locking foot anchor rod driving device proposed by the utility model;

[0019] Figure 4 This is an enlarged view of the structure of the worm gear frame part in the tunnel arch initial support locking anchor rod driving device proposed by the utility model.

[0020] In the figure: 1 arc-shaped base, 2 arc-shaped base, 3 arc-shaped limiting hole, 4 rotating frame, 5 connecting frame, 6 connecting rod, 7 limiting block, 8 worm gear frame, 9 knob one, 10 worm, 11 clamping plate, 12 bidirectional threaded rod, 13 mounting frame, 14 knob two, 15 mounting groove, 16 limiting rod, 17 limiting cylinder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 , a device for driving and setting anchor bolts for initial support of tunnel arch frame, comprising an arc-shaped base frame 1, arc-shaped bases 2 are installed at both ends of the arc-shaped base frame 1, and a rotating frame 4 is slidably connected to the two arc-shaped base frames 2, and an arc-shaped limiting hole 3 is opened on each arc-shaped base frame 2, and two limiting rods 16 are symmetrically installed on the rotating frame 4, and each limiting rod 16 is slidably connected in the arc-shaped limiting hole 3 corresponding to the position, and the lower end of each limiting rod 16 is fixedly connected to a limiting block 7, and the limiting block 7 is slidably connected to the arc-shaped base frame 2 to ensure the stability of the rotation of the rotating frame 4 and avoid large shaking of the rotating frame 4 during the rotation process, and at the same time, the angle of the limiting cylinder 17 can also be ensured, and the end face of each arc-shaped base frame 2 away from the arc-shaped base frame 1 is provided with a scale, and pointers are provided at both ends of the rotating frame 4, and the pointers are in contact with the end face of the arc-shaped base 2;

[0023] A limit cylinder 17 is installed on the rotating frame 4 through a connecting assembly, and the connecting assembly includes two symmetrically arranged connecting frames 5, and each connecting frame 5 is connected to the limit cylinder 17 through a connecting rod 6;

[0024] The arc-shaped base frame 1 is connected to the rotating frame 4 through an angle transmission assembly, which includes a worm 10. The rotating frame 4 is equipped with a mounting frame 13, and a knob 9 is installed on the mounting frame 13 through a rotating shaft, and the worm 10 is installed on the rotating shaft. A worm gear frame 8 is installed on the outer wall of the arc-shaped base frame 1, and the worm gear frame 8 is meshed with the worm 10. The worm gear frame 8 and the arc-shaped base frame 1 are fixed under the limiting action of the clamping plate 11 and the tunnel steel arch frame, so the worm 10 rotates through the rotating frame 4, and the rotating frame 4 drives the limiting cylinder 17 to rotate through the connecting frame 5 and the connecting rod 6. The worm gear transmission can achieve self-locking to prevent reversal, and avoid the stability of the rotating frame 4 when the locking foot anchor rod is used through the limiting cylinder 17;

[0025] A mounting groove 15 is provided at the lower end of the arc-shaped base 1, and a clamping assembly is installed in the mounting groove 15. The clamping assembly includes a bidirectional threaded rod 12, and the bidirectional threaded rod 12 is horizontally installed in the mounting groove 15. One end of the bidirectional threaded rod 12 passes through one of the arc-shaped bases 2 and is installed with a knob 2 14. The bidirectional threaded rod 12 is symmetrically provided with two sections of threads, and the directions of the two sections of threads are opposite. A clamping plate 11 is threadedly connected to each section of the thread, and the clamping plate 11 is slidably connected in the mounting groove 15.

[0026] When the utility model is used, the device is placed on the tunnel steel arch frame, and then the knob 14 is turned, the knob 14 drives the bidirectional threaded rod 12 to rotate, and the two sections of threads arranged in opposite directions on the bidirectional threaded rod 12 drive the two clamping plates 11 to move toward each other until the two clamping plates 11 clamp and fix the tunnel steel arch frame, thereby fixing the device on the tunnel steel arch frame;

[0027] When adjusting the angle of the limit cylinder 17, turn the knob 9, the knob 9 drives the worm 10, the worm 10 engages with the worm gear frame 8, the worm gear frame 8 and the arc base frame 1 are fixed under the limiting action of the clamping plate 11 and the tunnel steel arch frame, so the worm 10 rotates through the rotating frame 4, and the rotating frame 4 drives the limit cylinder 17 to rotate through the connecting frame 5 and the connecting rod 6. When the rotating frame 4 rotates, the limit rod 16 moves in the arc limit hole 3, and the limit hole 16 drives the pointer to move through the limit block 7. The rotation angle of the rotating frame 4 and the limit cylinder 17 can be observed through the pointer and the scale. When it rotates to a suitable predetermined angle, stop turning the knob 9, insert the anchor rod into the limit cylinder 17 for operation.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tunnel arch initial support locking foot anchor rod driving device, comprising an arc-shaped base frame (1), characterized in that: Both ends of the arc-shaped base frame (1) are provided with an arc-shaped base (2), and a rotating frame (4) is slidably connected to the two arc-shaped base frames (2), and a limiting cylinder (17) is installed on the rotating frame (4) via a connecting assembly, and the arc-shaped base frame (1) and the rotating frame (4) are connected via an angle transmission assembly; The lower end of the arc-shaped base frame (1) is provided with a mounting groove (15), and a clamping assembly is installed in the mounting groove (15).

2. A tunnel arch initial support locking anchor rod driving device according to claim 1, characterized in that: The connection assembly comprises two symmetrically arranged connection frames (5), and each of the connection frames (5) is connected to a limiting cylinder (17) via a connection rod (6).

3. The tunnel arch initial support locking foot anchor rod driving device according to claim 1 is characterized in that: The angle transmission assembly comprises a worm (10), the rotating frame (4) is equipped with a mounting frame (13), a knob (9) is mounted on the mounting frame (13) via a rotating shaft, and the worm (10) is mounted on the rotating shaft, a worm gear frame (8) is mounted on the outer side wall of the arc-shaped base frame (1), and the worm gear frame (8) is meshed with the worm (10).

4. The tunnel arch initial support locking anchor rod driving device according to claim 1 is characterized by: The clamping assembly comprises a bidirectional threaded rod (12), and the bidirectional threaded rod (12) is horizontally installed in the installation groove (15), one end of the bidirectional threaded rod (12) passes through one of the arc-shaped bases (2) and is installed with a second knob (14), the bidirectional threaded rod (12) is symmetrically provided with two sections of threads, and the directions of the two sections of threads are opposite, each section of the threads is threadedly connected with a clamping plate (11), and the clamping plate (11) is slidably connected in the installation groove (15).

5. The tunnel arch initial support locking anchor rod driving device according to claim 1 is characterized in that: Each of the arc-shaped bases (2) is provided with an arc-shaped limiting hole (3), and two limiting rods (16) are symmetrically mounted on the rotating frame (4), and each limiting rod (16) is slidably connected in the arc-shaped limiting hole (3) at a corresponding position, and the lower end of each limiting rod (16) is fixedly connected to a limiting block (7), and the limiting block (7) is slidably connected to the arc-shaped base (2).

6. The tunnel arch initial support locking anchor rod driving device according to claim 1 is characterized by: The end surface of each arc-shaped base (2) away from the arc-shaped base frame (1) is provided with a scale, and pointers are provided at both ends of the rotating frame (4), and the pointers are in contact with the end surface of the arc-shaped base (2).

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