A device and method for removing a support frame from a subterranean conduit

Abstract

This application relates to the field of underground pipeline construction, and in particular to a device and method for dismantling support frames inside underground pipelines. The device includes a vehicle body with clamping components, a guide plate, a bearing plate, and a support spring. The bearing plate is slidably connected within the vehicle body to support the support frame. The bearing plate includes two rotating plates and a connecting shaft, with the two rotating plates rotatably connected to both sides of the connecting shaft. The support spring connects the vehicle body and the bearing plate, giving the bearing plate an upward sliding tendency. The clamping components clamp the support frame, and the vehicle body also has a clamping component drive mechanism for driving the clamping components. The dismantling method includes adjusting the bearing plate, clamping, transferring the support frame, and leveling the rotating plates. The dismantling device and method provided by this application allow the support frame to rest stably on the bearing plate, reducing the space occupied by the support frame to prevent it from scattering, allowing the vehicle body to accommodate more support frames at a time, reducing the number of transfers, and improving construction efficiency.

Description

Technical Field

[0001] This application relates to the field of underground pipeline construction, and in particular to a device and method for dismantling support frames inside underground pipelines. Background Technology

[0002] Before connecting the existing pipeline to the new underground passage, a support frame needs to be erected inside the pipeline to support the upper and lower side walls and improve the stability of the pipeline during the connection process. After the connection between the pipeline and the new underground passage is completed and the structure at the connection point is stable, the support frame is removed and transported away by a transport vehicle.

[0003] In existing technologies, workers typically throw the dismantled support frames directly into the transport vehicle. However, this method makes the support frames easily scattered and messy inside the transport vehicle, increasing the space occupied and thus affecting the number of support frames that the transport vehicle can hold at one time. The transport vehicle needs to make more round trips, which affects construction efficiency. Summary of the Invention

[0004] In order to increase the number of support frames that a transport vehicle can accommodate and thus improve construction efficiency, this application provides a device and method for dismantling support frames inside underground pipelines.

[0005] The present application provides a device and method for dismantling an internal support frame of an underground pipeline, which adopts the following technical solution:

[0006] A device for dismantling a support frame inside an underground pipeline includes a vehicle body. The vehicle body is equipped with a clamping component, a guide plate, a bearing plate, and a support spring. The bearing plate is slidably connected within the vehicle body to support the support frame. The bearing plate includes two rotating plates and a connecting shaft. The two rotating plates are rotatably connected to opposite sides of the connecting shaft. The connecting shaft also has a rotation drive for rotating the rotating plates. The support spring connects the vehicle body and the bearing plate, giving the bearing plate an upward sliding tendency. Two sets of guide plates are arranged opposite each other, each guide plate being inclined and positioned directly above the bearing plate. A through hole for the support frame to pass through is left between the lower ends of the two sets of guide plates. The connecting shaft is parallel to the length direction of the through hole. The clamping component clamps the support frame, and the vehicle body is also equipped with a clamping component drive mechanism for moving the clamping component.

[0007] By adopting the above technical solution, before dismantling the support frame, the rotating plate is first rotated to a certain angle using a rotation drive, so that a certain angle is formed between the two rotating plates, and the connecting shaft is higher than the end of the rotating plate. The clamping member driving mechanism first moves the clamping member to the support frame, clamps the support frame, and then, driven by the clamping member driving mechanism, moves it to above the guide plate and releases the support frame. The support frame falls onto the guide plate and slides along the guide plate towards the through hole. When the support frame passes through the through hole, it can be adjusted to the same angle before falling, so that each support frame can fall neatly onto the bearing plate. As the dismantled support frames are placed back into the vehicle body, the load-bearing plate gradually moves downwards while the rotating plate rotates upwards, bringing the two rotating plates into a parallel state. During the rotation of the rotating plate, the support frames on the load-bearing plate move slightly within a range, making the upper surface of the stacked support frames nearly horizontal. This allows the newly placed support frames to be neatly and evenly spread on the load-bearing plate, preventing the support frames from scattering due to uneven stacking. This reduces the space occupied by the support frames, increases the number of support frames that the vehicle body can accommodate at one time, reduces the number of times the vehicle body needs to be moved, and improves construction efficiency.

[0008] In addition, because the support spring has the tendency to push the support plate upward, it reduces the distance between the support plate and the through hole, thus allowing the support frame to rest more stably on the support plate.

[0009] Optionally, the rotation drive includes a worm gear and a worm shaft rotatably disposed within the connecting shaft. The worm gear and worm shaft are provided in two sets, and the worm gear and worm shaft in each set mesh with each other. The two sets of worm gears are respectively connected to two rotating plates. The connecting shaft is provided with a clearance groove for the rotating plates to rotate. The axis of the worm shaft is perpendicular to the axis of the connecting shaft.

[0010] By adopting the above technical solution, the two sets of worm gears rotate in opposite directions, driving the two sets of worm wheels to rotate in opposite directions, which in turn drives the two rotating plates to rotate in opposite directions, thus achieving the rotation drive of the rotating plates. Because the worm wheel and worm gear have a self-locking function, the rotating plates can rotate to any angle and then stop, ensuring the stability of the rotating plates. No additional limiting structures are needed, simplifying the device structure.

[0011] Optionally, the rotation drive further includes a drive rod, a first bevel gear, a second bevel gear, and a first motor. The drive rod, the first bevel gear, and the second bevel gear are all rotatably connected to the connecting shaft. The drive rod is parallel to the connecting shaft. The first bevel gear and the second bevel gear are provided in two sets and correspond to the two sets of worm gears respectively. The bevel gears are coaxially fixed on the drive rod. The second bevel gear in each set meshes with the first bevel gear. The worm gear in each set is coaxially fixedly connected to the second bevel gear, and the threads of the two sets of worm gears are opposite. The first motor is mounted on the connecting shaft to drive the drive rod to rotate.

[0012] By adopting the above technical solution, the first motor drives the drive rod to rotate, which in turn drives two sets of bevel gears to rotate synchronously, thereby driving two sets of bevel gears to rotate synchronously, and simultaneously driving two sets of worm gears to rotate. Since the threads of the two sets of worm gears have opposite directions, the rotation directions of the two sets of worm gears are opposite. That is, driving the drive rod to rotate enables the two rotating plates to rotate in opposite directions simultaneously, which facilitates the control of the movement of the two rotating plates and saves resources.

[0013] Optionally, the rotation drive is provided in multiple sets at intervals along the axial direction of the connecting shaft.

[0014] By adopting the above technical solution, multiple sets of rotation drives are used to jointly drive the rotation of the rotating plate, which improves the stability of the rotation of the rotating plate and can also play a role in sharing the load, thereby extending the service life of the rotation drive.

[0015] Optionally, a top plate is slidably connected to the vehicle body, the top plate being directly below the connecting shaft, and a top spring for connecting the vehicle body and the top plate is also provided on the vehicle body, the top spring causing the top plate to tend to support the connecting shaft upward.

[0016] By adopting the above technical solution, the clamping plate supports the connecting shaft under the action of the clamping spring, so that the middle and end of the bearing plate can be supported, reducing the pressure on the connecting shaft and reducing the possibility of damage to the connecting shaft.

[0017] Optionally, the clamping member includes a fixed plate and two sets of clamping plates. The fixed plate is mounted on the clamping member driving mechanism. The two sets of clamping plates are arranged opposite to each other on both sides of the fixed plate and can slide on the fixed plate. The fixed plate is also provided with clamping cylinders for driving the clamping plates closer to or further apart from each other. There are two sets of clamping cylinders and they correspond to the two sets of clamping plates.

[0018] By adopting the above technical solution, before clamping the support frame, the clamping cylinder first drives the two sets of clamping plates away from each other. After the clamping component moves to the point where the support frame is between the two clamping plates, the clamping cylinder then drives the clamping plates closer together until the support frame is clamped. To release the support frame, simply drive the two sets of clamping plates away from each other; the operation is simple.

[0019] Optionally, the clamping component driving mechanism includes a third motor, a driving cylinder, a mounting plate, a driving wheel, a driven wheel, and a second motor. The driving cylinder is hinged to the top of the vehicle body. The third motor is mounted on the vehicle body to drive the driving cylinder to rotate. The mounting plate is mounted on the end of the driving cylinder away from the vehicle body. The driving wheel and the driven wheel are both rotatably connected to the mounting plate. The second motor is fixed on the mounting plate to drive the driving wheel to rotate. The driven wheel meshes with the driving wheel. The fixed plate is connected to the driven wheel.

[0020] By adopting the above technical solution, when the support frame needs to be clamped, the third motor drives the drive cylinder to rotate towards the support frame. Subsequently, the drive cylinder drives the mounting plate to move until the support frame is between the two sets of clamping plates. After the clamping component clamps the support frame, the drive cylinder retracts, and then the third motor reverses, driving the clamping component to rotate above the guide plate.

[0021] When the support frame is tilted relative to the clamping member, the second motor drives the drive wheel and the driven wheel to rotate, so that the two sets of clamping plates are on both sides of the support frame. Then the clamping member is rotated again so that the support frame is parallel to the through hole, making it easier for the support frame to pass through the through hole.

[0022] A method for dismantling an internal support frame of an underground pipeline, using the aforementioned dismantling device, includes the following steps:

[0023] S1, Adjust the support plate. The support plate moves to the upper part of the vehicle body under the action of the support spring. The rotation drive drives the rotating plate to rotate, so that the connecting shaft is higher than the end of the rotating plate.

[0024] S2, Clamping, the clamping member drive mechanism drives the clamping member to approach the support frame, and the clamping member clamps the support frame;

[0025] S3, transfer support frame, the clamping member drive mechanism drives the clamping member to move the support frame above the guide plate, then the clamping member releases the support frame, the support frame falls onto the guide plate, and passes through the through hole onto the bearing plate;

[0026] S4. After placing the rotating plate flat and stacking a number of support frames on the support frame, drive the rotating plate to rotate to a horizontal position.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Under the action of the support spring, the bearing plate moves closer to the guide plate, reducing the distance between the through hole and the bearing plate. This makes it easier for the support frame to land stably on the bearing plate, allowing the bearing plate to be neatly placed in the vehicle body. This reduces the space occupied by the support frame and increases the number of support frames that the vehicle body can accommodate at one time, thereby reducing the number of handling operations and improving construction efficiency.

[0029] 2. The rotating plate can be rotated, which makes it easier to adjust the position of the support frame on the load-bearing plate, so that the load-bearing plate can be evenly distributed on the load-bearing plate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the rotating plate in the rotating state in Embodiment 1 of this application;

[0031] Figure 2 yes Figure 1 An exploded view of the connecting shaft and the rotating plate is intended to illustrate the structural features of the rotation drive.

[0032] Figure 3 This is a schematic diagram of the overall structure of the rotating plate in the horizontal state in Embodiment 1 of this application;

[0033] Figure 4 yes Figure 1 Enlarged diagram of point A in the middle.

[0034] Explanation of reference numerals in the attached drawings: 1. Vehicle body; 2. Clamping component; 3. Guide plate; 4. Bearing plate; 5. Support spring; 6. Rotating plate; 7. Connecting shaft; 8. Limiting plate; 9. Slide groove; 10. Through hole; 11. Clamping component drive mechanism; 12. Worm gear; 13. Worm; 14. Connecting rod; 15. Relief groove; 16. Drive rod; 17. Bevel gear one; 18. Bevel gear two; 19. First motor; 20. Top block; 21. Tightening plate; 22. Tightening spring; 23. Fixing plate; 24. Clamping plate; 25. Clamping cylinder; 26. Third motor; 27. Drive cylinder; 28. Mounting plate; 29. ​​Drive wheel; 30. Driven wheel; 31. Second motor. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0036] Example 1:

[0037] A device for dismantling support frames inside underground pipelines, referring to Figure 1 The system includes a vehicle body 1, on which clamping components 2, guide plates 3, bearing plates 4, and support springs 5 ​​are mounted. The bearing plate 4 is slidably connected within the vehicle body 1 to support a support frame. The bearing plate 4 includes two rotating plates 6 and a connecting shaft 7. The two rotating plates 6 are rotatably connected to both sides of the connecting shaft 7, and the connecting shaft 7 is also equipped with a rotation drive for rotating the rotating plates 6. Each of the two rotating plates 6 has a limiting plate 8 at its end away from the connecting shaft 7. The limiting plate 8 is parallel to the connecting shaft 7. Slide grooves 9 are provided on opposite sides inside the vehicle body 1, allowing the limiting plates 8 to insert into and slide within the slide grooves 9. Support springs 5 ​​are vertically mounted within the slide grooves 9, and each slide groove 9 contains two sets of support springs 5. One end of each support spring 5 is connected to the vehicle body 1, and the other end is connected to the limiting plate 8. The support springs 5 ​​cause the bearing plate 4 to have an upward sliding tendency.

[0038] Two sets of guide plates 3 are arranged opposite each other, each guide plate 3 is inclined and directly above the bearing plate 4, and a through hole 10 is left between the lower ends of the two sets of guide plates 3 for the support frame to pass through. The connecting shaft 7 is parallel to the length direction of the through hole 10, and the through hole 10 is directly above the connecting shaft 7. The clamping member 2 is used to clamp the support frame, and the vehicle body 1 is also provided with a clamping member drive mechanism 11 for driving the clamping member 2 to move.

[0039] The initial position of the support plate 4 is at the top of the vehicle body 1, driving the rotating plate 6 to rotate to a certain angle, so that the connecting shaft 7 is higher than the limiting plate 8. The clamping member driving mechanism 11 drives the clamping member 2 to move to the support frame, using the clamping member 2 to clamp the support frame. Then, after the clamping member driving mechanism 11 transfers the support frame to above the guide plate 3, the clamping member 2 releases the support frame, and the support frame falls onto the support plate 4 through the through hole 10. When the support plate 4 moves down, the rotating plate 6 rotates upward to a horizontal position, and the support frame on the support plate 4 moves slightly, making the upper surface of the support frame stack relatively flat, and then the support frame continues to be pushed into the vehicle body 1.

[0040] Reference Figure 1 and Figure 2 The rotation drive includes a worm gear 12 and a worm 13 rotatably mounted within the connecting shaft 7. Two sets of worm gears 12 and worm 13 are provided, with each set meshing with the worm gear 13. The two sets of worm gears 12 are respectively connected to two rotating plates 6 via connecting rods 14. The connecting shaft 7 has clearance grooves 15 for the connecting rods 14 to rotate, and the axes of the worms 13 are perpendicular to the axis of the connecting shaft 7.

[0041] The rotation drive also includes a drive rod 16, a first bevel gear 17, a second bevel gear 18, and a first motor 19. The drive rod 16, the first bevel gear 17, and the second bevel gear 18 are all rotatably connected to the connecting shaft 7. The drive rod 16 is parallel to the connecting shaft 7. The first bevel gear 17 and the second bevel gear 18 each have two sets, corresponding to the two sets of worm gears 13 respectively. The first bevel gear 17 is spaced apart on the drive rod 16 and is fixed coaxially with the drive rod 16. The second bevel gear 18 in each set meshes with the first bevel gear 17. The worm gear 13 in each set is fixed coaxially with the second bevel gear 18, and the threads of the two sets of worm gears 13 have opposite directions. The first motor 19 is mounted on the connecting shaft 7 to drive the drive rod 16 to rotate.

[0042] To improve the stability of the rotating plate 6, multiple sets of rotation drives are provided at intervals along the axial direction of the connecting shaft 7.

[0043] The first motor 19 drives the drive rod 16 to rotate, which, through the meshing of the bevel gear 17 and the bevel gear, drives the two sets of worm gears 13 to rotate in opposite directions, thereby causing the two rotating plates 6 to rotate in opposite directions. Under the connection of the support spring 5, the end of the rotating plate 6 remains stationary, while the connecting shaft 7 moves up or down, realizing the rotation or flattening of the rotating plate 6.

[0044] Reference Figure 2 and Figure 3 On the side of the rotating plates 6 that are close to each other, there are also multiple sets of top blocks 20. When the rotating plates 6 are flat, the top blocks 20 on the two rotating plates 6 contact each other to prevent the connecting shaft 7 from moving downward under the pressure of the support frame.

[0045] A top plate 21 is also slidably connected inside the vehicle body 1. The top plate 21 is located directly below the connecting shaft 7. The vehicle body 1 is also provided with a top spring 22 for connecting the vehicle body 1 and the top plate 21. The top spring 22 makes the top plate 21 tend to support the connecting shaft 7 upward.

[0046] Reference Figure 1 and Figure 4 The clamping component 2 includes a fixed plate 23 and two sets of clamping plates 24. The two sets of clamping plates 24 are arranged opposite to each other on both sides of the fixed plate 23 and can slide on the fixed plate 23. The fixed plate 23 is also provided with clamping cylinders 25 for driving the clamping plates 24 to move closer or further apart. There are two sets of clamping cylinders 25, which are correspondingly connected to the two sets of clamping plates 24.

[0047] The clamping drive mechanism 11 includes a third motor 26, a drive cylinder 27, a mounting plate 28, a drive wheel 29, a driven wheel 30, and a second motor 31. The drive cylinder 27 is hinged to the top of the vehicle body 1, and the third motor 26 is mounted on the vehicle body 1 to drive the drive cylinder 27 to rotate. The mounting plate 28 is vertically mounted on the end of the drive cylinder 27 away from the vehicle body 1. The drive wheel 29 and the driven wheel 30 are both rotatably connected to the mounting plate 28. The second motor 31 is fixed to the mounting plate 28 to drive the drive wheel 29 to rotate. The driven wheel 30 meshes with the drive wheel 29, and the fixing plate 23 is connected to the driven wheel 30.

[0048] The second motor 31 drives the fixed plate 23 to rotate, changing the angle of the fixed plate 23, making it easier to clamp the support frame. The third motor 26 drives the drive cylinder 27 to rotate, which can drive the support frame to move closer to or away from the guide plate 3.

[0049] Example 2:

[0050] A method for dismantling an internal support frame of an underground pipeline, using the dismantling device described in Example 1, includes the following steps:

[0051] S1, adjust the support plate 4, the support plate 4 moves to the upper part of the vehicle body 1 under the action of the support spring 5, start the first motor 19 to drive the two rotating plates 6 to rotate downward, so that the connecting shaft 7 is higher than the end of the rotating plate 6.

[0052] S2, clamping, the third motor 26 drives the drive cylinder 27 to rotate downwards, and at the same time the drive cylinder 27 extends to bring the clamping part 2 close to the support frame. The second motor 31 drives the fixing plate 23 to rotate so that the support frame can be between the two clamping plates 24. Then the clamping cylinder 25 drives the clamping plate 24 to move to clamp the support frame.

[0053] S3, transfer support frame, clamp 2 drives support frame to move above guide plate 3, then clamp 24 move away from each other, release support frame, support frame falls onto guide plate 3, and passes through through hole 10 onto bearing plate 4;

[0054] S4, flatten the rotating plate 6. When there are many support frames stacked on the support frame, after the bearing plate 4 moves down a certain distance, the first motor 19 drives the rotating plate 6 to rotate upward, so that the two rotating plates 6 rotate to a horizontal state.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for dismantling an internal support frame of an underground pipeline, characterized in that: The system includes a vehicle body (1), on which are provided clamping components (2), guide plates (3), bearing plates (4), and support springs (5). The bearing plates (4) are slidably connected within the vehicle body (1) to support the support frame. The bearing plates (4) include two rotating plates (6) and a connecting shaft (7). The two rotating plates (6) are rotatably connected to both sides of the connecting shaft (7). The connecting shaft (7) is also provided with a rotation drive for driving the rotating plates (6) to rotate. The support springs (5) are used to connect the vehicle body (2), guide plates (3), bearing plates (4), and support springs (5). 1) With the support plate (4), the support plate (4) has an upward sliding tendency. The guide plate (3) is provided in two sets opposite each other. Each guide plate (3) is inclined and set directly above the support plate (4). A through hole (10) is left between the lower ends of the two sets of guide plates (3) for the support frame to pass through. The connecting shaft (7) is parallel to the length direction of the through hole (10). The clamping member (2) is used to clamp the support frame. The vehicle body (1) is also provided with a clamping member driving mechanism (11) for driving the clamping member (2) to move.

2. The device for dismantling an internal support frame for an underground pipeline according to claim 1, characterized in that: The rotation drive includes a worm gear (12) and a worm (13) rotatably disposed in the connecting shaft (7). There are two sets of worm gears (12) and worm (13), and the worm gears (12) and worm (13) in each set mesh with each other. The two sets of worm gears (12) are respectively connected to two rotating plates (6). The connecting shaft (7) is provided with a relief groove (15) for the rotating plates (6) to rotate. The axis of the worm (13) is perpendicular to the axis of the connecting shaft (7).

3. The device for dismantling an internal support frame of an underground pipeline according to claim 2, characterized in that: The rotation drive also includes a drive rod (16), a first bevel gear (17), a second bevel gear (18), and a first motor (19). The drive rod (16), the first bevel gear (17), and the second bevel gear (18) are all rotatably connected to the connecting shaft (7). The drive rod (16) is parallel to the connecting shaft (7). The first bevel gear (17) and the second bevel gear (18) are provided in two sets and correspond to the two sets of worm gears (13) respectively. The first bevel gear (17) is coaxially fixed on the drive rod (16). The second bevel gear (18) in each set meshes with the first bevel gear (17). The worm gear (13) in each set is coaxially fixedly connected with the second bevel gear (18), and the threads of the two sets of worm gears (13) are opposite. The first motor (19) is set on the connecting shaft (7) to drive the drive rod (16) to rotate.

4. The device for dismantling an internal support frame of an underground pipeline according to claim 3, characterized in that: The rotation drive is provided in multiple sets at intervals along the axial direction of the connecting shaft (7).

5. The device for dismantling an internal support frame of an underground pipeline according to claim 1, characterized in that: A top plate (21) is slidably connected inside the vehicle body (1). The top plate (21) is located directly below the connecting shaft (7). The vehicle body (1) is also provided with a top spring (22) for connecting the vehicle body (1) and the top plate (21). The top spring (22) makes the top plate (21) tend to support the connecting shaft (7) upward.

6. The device for dismantling an internal support frame of an underground pipeline according to claim 1, characterized in that: The clamping member (2) includes a fixed plate (23) and two sets of clamping plates (24). The fixed plate (23) is mounted on the clamping member driving mechanism (11). The two sets of clamping plates (24) are arranged opposite to each other on both sides of the fixed plate (23) and can slide on the fixed plate (23). The fixed plate (23) is also provided with clamping cylinders (25) for driving the clamping plates (24) to move closer or further apart. There are two sets of clamping cylinders (25) and they correspond to the two sets of clamping plates (24).

7. The device for dismantling an internal support frame of an underground pipeline according to claim 6, characterized in that: The clamping drive mechanism (11) includes a third motor (26), a drive cylinder (27), a mounting plate (28), a drive wheel (29), a driven wheel (30), and a second motor (31). The drive cylinder (27) is hinged to the top of the vehicle body (1). The third motor (26) is mounted on the vehicle body (1) to drive the drive cylinder (27) to rotate. The mounting plate (28) is mounted on the end of the drive cylinder (27) away from the vehicle body (1). The drive wheel (29) and the driven wheel (30) are both rotatably connected to the mounting plate (28). The second motor (31) is fixed on the mounting plate (28) to drive the drive wheel (29) to rotate. The driven wheel (30) meshes with the drive wheel (29). The fixed plate (23) is connected to the driven wheel (30).

8. A method for dismantling a support frame inside an underground pipeline, characterized in that, The dismantling device according to any one of claims 1-7 includes the following steps: S1, adjust the support plate (4), the support plate (4) moves to the upper part of the vehicle body (1) under the action of the support spring (5), and the rotation drive drives the rotating plate (6) to rotate, so that the connecting shaft (7) is higher than the end of the rotating plate (6); S2, clamping, the clamping member drive mechanism (11) drives the clamping member (2) to approach the support frame, and the clamping member (2) clamps the support frame; S3, transfer support frame, clamping member drive mechanism (11) drives clamping member (2) to move support frame above guide plate (3), then clamping member (2) releases support frame, support frame falls onto guide plate (3) and passes through through hole (10) onto bearing plate (4); S4, flatten the rotating plate (6), after stacking a lot of support frames on the support frame, drive the rotating plate (6) to rotate to the horizontal.

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