Duct piece dismantling auxiliary tool in shield section underground excavation construction

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a duct piece dismantling auxiliary tool in shield section underground excavation construction. The duct piece dismantling auxiliary tool comprises a tunnel, a steel pipe piece is arranged on one side of the tunnel, a limiting mechanism is arranged on the surface of the tunnel, the limiting mechanism comprises a movable base, and the movable base is arranged in the tunnel. Rolling wheels are fixedly installed at the bottom of the movable base, and a first hydraulic cylinder is fixedly connected to the surface of the movable base. The device is rapidly fixed on one side of the steel pipe sheet through the limiting mechanism, the position of the electric gripper is flexibly adjusted through the dismantling mechanism, the steel pipe sheet is dismantled through the electric gripper and transferred to the surface of the movable base, manual dismantling through a chain block, a gas welding cutting machine and other tools is not needed, and the dismantling efficiency is greatly improved. The dismantling efficiency of the steel pipe piece is improved, the safety of dismantling the steel pipe piece is guaranteed, and the efficient and safe construction requirements of a tunnel are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to an auxiliary tool for segment removal during shield tunneling. Background Technology

[0002] In tunnel construction, the excavation of connecting passages is a crucial step, especially in subway tunnels constructed using the shield tunneling method. As an evacuation and rescue passage between tunnel sections, connecting passages usually require the pre-installation of steel segments. These steel segments are designed as detachable, modular pieces during shield tunnel construction so that they can be easily removed during the later construction of connecting passages, thus achieving connectivity between tunnels.

[0003] Existing methods for dismantling steel segments involve using tools such as hand-operated hoists and gas welding cutting machines to remove them, as the segments become increasingly tighter under radial force. This requires multiple people to work together, resulting in low efficiency and high construction risks, which cannot meet the requirements for efficient and safe tunnel construction. Therefore, an auxiliary tool for dismantling steel segments during shield tunneling was designed. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary tool for dismantling tunnel segments during shield tunneling construction, in order to solve the problems mentioned in the background art, such as the need for multiple people to work together during the dismantling of existing steel tunnel segments, low dismantling efficiency and high construction risk, which cannot meet the requirements of efficient and safe tunnel construction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary tool for segment removal during shield tunneling construction: It includes a tunnel, with steel segments installed on one side of the tunnel. A limiting mechanism is installed on the surface of the tunnel. The limiting mechanism includes a movable base, which is located inside the tunnel. Rollers are fixedly installed on the bottom of the movable base. A first hydraulic cylinder is fixedly connected to the surface of the movable base. A supporting block is fixedly connected to the piston rod of the first hydraulic cylinder. A limiting frame is fixedly connected to the surface of the movable base. A second hydraulic cylinder is fixedly connected to the surface of the limiting frame. A limiting plate is fixedly connected to the piston rod of the second hydraulic cylinder. A removal mechanism is provided on the surface of the limiting frame. The removal mechanism includes a first motor, which is fixedly connected to the surface of the limiting frame. A first lead screw is fixedly connected to the output shaft of the first motor. A lifting plate is threadedly connected to the surface of the first lead screw. A second motor is fixedly connected to the surface of the lifting plate. A second lead screw is fixedly connected to the output shaft of the second motor. A moving plate is threadedly connected to the surface of the second lead screw. A first cylinder is rotatably connected to the surface of the moving plate. A second cylinder is rotatably connected to the bottom of the moving plate. The piston rod of the first cylinder is rotatably connected to one end of the second cylinder. An electric gripper is provided on the piston rod of the second cylinder.

[0006] Preferably, the moving base moves inside the tunnel through rollers. The first hydraulic cylinder drives the supporting base block to lift through a piston rod, and the supporting base block supports the moving base through the first hydraulic cylinder.

[0007] Preferably, the limiting frame is integrally circular in shape, and the bottom is fixedly arranged on the surface of the moving base in a straight line. There is a "rice" - shaped support inside the limiting frame.

[0008] Preferably, multiple groups of the second hydraulic cylinders and limiting plates are provided and evenly distributed on the surface of the limiting frame. The limiting plates are arc - shaped, and the second hydraulic cylinders drive the limiting plates to be in contact connection with the inner surface of the tunnel through piston rods.

[0009] Preferably, a guiding groove is formed on the surface of the limiting frame. The first motor drives a first screw rod to rotate on the guiding groove of the limiting frame through an output shaft, and the first screw rod drives a lifting plate to slide up and down on the guiding groove of the limiting frame through rotation.

[0010] Preferably, the second motor drives a second screw rod to rotate on the lifting plate through a piston rod. The second screw rod drives a moving plate to slide at the bottom of the lifting plate through rotation, and the moving plate drives the first cylinder and the second cylinder to slide synchronously.

[0011] Preferably, the first cylinder drives the second cylinder to rotate at the bottom of the moving plate through a piston rod. The second cylinder sends an electric gripper towards the steel segment through a piston rod, and the electric gripper forms a clamping force on the steel segment.

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

[0013] 1. The output shaft of the first motor drives the first screw rod to rotate. The first screw rod drives the lifting plate to move up and down on the limiting frame through rotation. The limiting frame drives the electric gripper to move up and down synchronously. Then, the output shaft of the second motor drives the second screw rod to rotate. The second screw rod drives the moving plate to slide at the bottom of the lifting plate through rotation. The moving plate drives the electric gripper to move in position. Then, the piston rod of the first cylinder drives the second cylinder to rotate at the bottom of the moving plate, thereby changing the clamping angle of the electric gripper. Finally, the second cylinder sends the electric gripper towards the steel segment through a piston rod, enabling the electric gripper to clamp the steel segment, facilitating the electric gripper to remove the steel segment and transfer it to the surface of the moving base, improving the removal efficiency of the steel segment, ensuring the safety of removing the steel segment, and meeting the requirements of efficient and safe construction of the tunnel.

[0014] 2. The mobile base is moved to one side of the steel pipe segment by rollers. The piston rod of the first hydraulic cylinder drives the support block to descend, so that the support block supports the mobile base through the first hydraulic cylinder. The support block also increases the overall height of the support block. Then, multiple sets of second hydraulic cylinders drive the limiting plate to move to contact and connect with the inner wall of the tunnel. At this time, the support block and the limiting plate restrict the mobile base and the limiting frame inside the tunnel, which facilitates the dismantling of the steel pipe segment and ensures the stability of the dismantling. This limiting mechanism is easy to operate and can quickly position itself on one side of the steel pipe segment, thus ensuring the efficiency of the dismantling. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional front view of the structure of this utility model;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4 This is a three-dimensional sectional view of the structure of this utility model.

[0019] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A;

[0020] Figure 6 This utility model Figure 2 Enlarged structural diagram at point B;

[0021] Figure 7 This utility model Figure 4 A magnified structural diagram at point C.

[0022] In the diagram: 1. Tunnel; 11. Steel pipe segment; 2. Movable base; 21. Roller; 22. First hydraulic cylinder; 23. Support base block; 24. Limiting frame; 25. Second hydraulic cylinder; 26. Limiting plate; 3. First motor; 31. First lead screw; 32. Lifting plate; 33. Second motor; 34. Second lead screw; 35. Movable plate; 36. First cylinder; 37. Second cylinder; 38. Electric gripper. Detailed Implementation

[0023] Please see Figure 1-5 One embodiment provided by this utility model:

[0024] An auxiliary tool for segment removal in shield tunnel construction: It includes a tunnel. On one side of the tunnel, there is a steel segment. A limiting mechanism is arranged on the surface of the tunnel. The limiting mechanism includes a moving base. The moving base is arranged inside the tunnel. At the bottom of the moving base, rollers are fixedly installed. On the surface of the moving base, a first hydraulic cylinder is fixedly connected. On the piston rod of the first hydraulic cylinder, a supporting bottom block is fixedly connected. On the surface of the moving base, a limiting frame is fixedly connected. On the surface of the limiting frame, a second hydraulic cylinder is fixedly connected. On the piston rod of the second hydraulic cylinder, a limiting plate is fixedly connected. This limiting mechanism can quickly fix the entire device inside the tunnel, prevent the device from moving during the process of removing the steel segment, and ensure the stability of the steel segment during the removal process. On the surface of the limiting frame, a removal mechanism is arranged. The removal mechanism includes a first motor. The first motor is fixedly connected to the surface of the limiting frame. On the output shaft of the first motor, a first screw rod is fixedly connected. On the surface of the first screw rod, a lifting plate is threadedly connected. On the surface of the lifting plate, a second motor is fixedly connected. On the output shaft of the second motor, a second screw rod is fixedly connected. On the surface of the second screw rod, a moving plate is threadedly connected. On the surface of the moving plate, a first cylinder is rotatably connected. At the bottom of the moving plate, a second cylinder is rotatably connected. The piston rod of the first cylinder is rotatably connected to one end of the second cylinder. On the piston rod of the second cylinder, an electric gripper is arranged. This removal mechanism can flexibly adjust the position of the electric gripper inside the tunnel, use the electric gripper to clamp the steel segment, use the electric gripper to remove the steel segment from the tunnel and place it on the moving base, improve the removal efficiency of the steel segment, and also ensure the safety of removing the steel segment.

[0025] Furthermore, the moving base moves inside the tunnel through the rollers. The first hydraulic cylinder drives the supporting bottom block to lift and lower through the piston rod. The supporting bottom block supports the moving base through the first hydraulic cylinder. The supporting bottom block can descend to a position lower than the bottom of the rollers. At this time, the rollers cannot support the moving base, and the supporting bottom block supports the moving base inside the tunnel, ensuring the supporting stability of the moving base inside the tunnel.

[0026] Furthermore, the overall shape of the limiting frame is circular, and the bottom is fixedly arranged on the surface of the moving base in a straight line. There is a "rice" - shaped support inside the limiting frame. There are two groups of limiting frames, and the two groups of limiting frames are connected by a crossbeam, ensuring the strength of the overall structure of the limiting frame on the moving base and extending the service life of the limiting frame on the moving base.

[0027] Furthermore, multiple sets of second hydraulic cylinders and limiting plates are provided and evenly distributed on the surface of the limiting frame. The limiting plates are arc-shaped, and the second hydraulic cylinder drives the limiting plates to contact the inner surface of the tunnel through the piston rod. Through multiple sets of limiting plates and multiple sets of supporting base blocks, the limiting frame and the movable base are limited inside the tunnel, preventing the device from moving inside the tunnel and ensuring the stability of the device during the removal of steel pipe segments.

[0028] Furthermore, a guide groove is provided on the surface of the limiting frame. The first motor drives the first lead screw to rotate on the guide groove of the limiting frame through the output shaft. The first lead screw drives the lifting plate to slide and rise on the guide groove of the limiting frame through rotation. There are two sets of first motors, which are controlled by a unified control system. Threaded holes are provided on both sides of the lifting plate. The first lead screw is threadedly connected to the threaded holes of the lifting plate. After the first lead screw rotates, it will automatically lock the position of the lifting plate on the surface of the limiting frame.

[0029] Furthermore, the second motor drives the second lead screw to rotate on the lifting plate via the piston rod. The rotation of the second lead screw causes the moving plate to slide at the bottom of the lifting plate. The moving plate drives the first cylinder and the second cylinder to slide synchronously. A threaded hole is opened on the surface of the moving plate. The second lead screw is threadedly connected to the threaded hole of the moving plate. The second cylinder can drive the electric gripper to move, thereby changing the position of the electric gripper. During the lifting process, the lifting plate can also drive the electric gripper to lift.

[0030] Furthermore, the first cylinder drives the second cylinder to rotate at the bottom of the moving plate via the piston rod. The second cylinder, through the piston rod, sends the electric gripper head toward the steel pipe segment, and the electric gripper head clamps the steel pipe segment. The electric gripper head is existing technology and can stably and reliably clamp the steel pipe segment, thereby disassembling the steel pipe segment. During the rotation of the second cylinder, the angle of the electric gripper head is changed. After the electric gripper head clamps the steel pipe segment, it is convenient to use machinery to dismantle the steel pipe segment without the need for manual dismantling using tools such as hand chain hoists or gas welding and cutting machines.

[0031] Working principle: A roller drives the movable base to one side of the steel pipe segment. The piston rod of the first hydraulic cylinder drives the support block to descend, allowing the support block to support the movable base and increasing its overall height. Multiple sets of second hydraulic cylinders then drive the limiting plate to move until it contacts and connects to the inner wall of the tunnel. At this point, the support block and the limiting plate confine the movable base and limiting frame inside the tunnel, facilitating the dismantling of the steel pipe segment and ensuring its stability. This limiting mechanism is easy to operate and can quickly position itself on one side of the steel pipe segment, thus ensuring efficient dismantling. The output shaft of the first motor then drives the first lead screw to rotate... The first lead screw rotates, causing the lifting plate to rise and fall on the limiting frame. The limiting frame then causes the electric gripper to rise and fall synchronously. The output shaft of the second motor drives the second lead screw to rotate, which in turn causes the moving plate to slide at the bottom of the lifting plate. The moving plate then moves the electric gripper. The piston rod of the first cylinder drives the second cylinder to rotate at the bottom of the moving plate, thereby changing the clamping angle of the electric gripper. Finally, the second cylinder, through the piston rod, feeds the electric gripper toward the steel pipe segment, allowing the electric gripper to clamp the steel pipe segment. This facilitates the removal of the steel pipe segment by the electric gripper and its transfer to the surface of the moving base, improving the removal efficiency of the steel pipe segment and ensuring the safety of the removal process.

Claims

1. An auxiliary tool for segment removal during shield tunneling, comprising a tunnel, wherein steel segments are installed on one side of the tunnel, characterized in that: A limiting mechanism is provided on the surface of the tunnel. The limiting mechanism includes a moving base which is arranged inside the tunnel. Rollers are fixedly installed at the bottom of the moving base. A first hydraulic cylinder is fixedly connected to the surface of the moving base. A supporting bottom block is fixedly connected to the piston rod of the first hydraulic cylinder. A limiting frame is fixedly connected to the surface of the moving base. A second hydraulic cylinder is fixedly connected to the surface of the limiting frame. A limiting plate is fixedly connected to the piston rod of the second hydraulic cylinder. A dismantling mechanism is arranged on the surface of the limiting frame. The dismantling mechanism includes a first motor which is fixedly connected to the surface of the limiting frame. A first screw rod is fixedly connected to the output shaft of the first motor. A lifting plate is threadedly connected to the surface of the first screw rod. A second motor is fixedly connected to the surface of the lifting plate. A second screw rod is fixedly connected to the output shaft of the second motor. A moving plate is threadedly connected to the surface of the second screw rod. A first air cylinder is rotatably connected to the surface of the moving plate. A second air cylinder is rotatably connected to the bottom of the moving plate. The piston rod of the first air cylinder is rotatably connected to one end of the second air cylinder. An electric gripper is arranged on the piston rod of the second air cylinder.

2. The auxiliary tool for segment removal during shield tunneling construction according to claim 1, characterized in that: The moving base moves inside the tunnel through the rollers. The first hydraulic cylinder drives the supporting bottom block to lift through the piston rod. The supporting bottom block supports the moving base through the first hydraulic cylinder.

3. The auxiliary tool for segment removal during shield tunneling construction according to claim 1, characterized in that: The overall shape of the limiting frame is circular, and the bottom is fixedly arranged in a straight line on the surface of the moving base. There is a "rice" - shaped support inside the limiting frame.

4. The auxiliary tool for segment removal during shield tunneling construction according to claim 1, characterized in that: The second hydraulic cylinders and the limiting plates are provided in multiple groups and are evenly distributed on the surface of the limiting frame. The limiting plates are arc - shaped, and the second hydraulic cylinders drive the limiting plates to be in contact connection with the inner surface of the tunnel through the piston rods.

5. The auxiliary tool for segment removal during shield tunneling construction according to claim 1, characterized in that: A guiding groove is opened on the surface of the limiting frame. The first motor drives the first screw rod to rotate on the guiding groove of the limiting frame through the output shaft. The first screw rod drives the lifting plate to slide and lift on the guiding groove of the limiting frame through rotation.

6. The auxiliary tool for segment removal during shield tunneling construction according to claim 1, characterized in that: The second motor drives the second screw rod to rotate on the lifting plate through the piston rod. The second screw rod drives the moving plate to slide at the bottom of the lifting plate through rotation. The moving plate drives the first air cylinder and the second air cylinder to slide synchronously.

7. The auxiliary tool for segment removal during shield tunneling construction according to claim 6, characterized in that: The first air cylinder drives the second air cylinder to rotate at the bottom of the moving plate through the piston rod. The second air cylinder sends the electric gripper towards the steel segment through the piston rod, and the electric gripper forms clamping on the steel segment.

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