Pipe roof jacking device

Abstract

The utility model discloses a pipe roof jacking device, which mainly solves the technical problem of how to conveniently adjust the device to adapt to steel pipes with different diameters, and comprises a lifting platform and a fixed frame, the fixed frame is fixedly connected to the top end of the lifting platform, a supporting mechanism is arranged at the top of the fixed frame, and an adjusting mechanism is arranged in the fixed frame. The supporting mechanism comprises a supporting plate, side plates are fixedly connected to the two sides of the top of the supporting plate, and a plurality of roller shafts are rotationally connected between the two side plates. The two-way threaded rod is driven by the motor to rotate, so that the positions of the two supporting pieces can be adjusted, the two supporting plates are adjusted, the two sets of roll shafts are tangent to the outer wall of a steel pipe, and under the condition, the roll shafts can support the steel pipe and play a role in limiting and guiding movement of the steel pipe; and the angle of the roll shaft can be adjusted in real time through the motor, so that the device can adapt to the steel pipes with different diameters, and the stable supporting and guiding effects are provided for the steel pipes.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe curtain steel pipe support guidance, in particular to a pipe curtain jacking device. Background Art

[0002] The pipe curtain method is an underground tunnel construction method. Its core lies in using the micro pipe jacking technology to push pipes made of steel pipes or other materials around the proposed underground building. These pipes are connected by locks and waterproof materials are injected, so as to form a waterproof underground space for building an underground building therein.

[0003] During the process of pushing the steel pipe in the pipe curtain method, it is usually necessary to consider the support and guidance of the steel pipe to ensure that the steel pipe can be accurately pushed into the designed position without deviation or deformation. Otherwise, if the jacking deviation is too large, it will cause the lock opening to deform or crack, making the pipe curtain unable to close, and even making it impossible to smoothly build an underground building due to the excessive deviation of the pipe curtain. Therefore, the temporary steel support for pipe curtain positioning and support is quite important.

[0004] After retrieval, the Chinese utility model patent with the publication number of CN216104139U discloses a guiding device for pipe curtain jacking, which includes a pair of guiding brackets, jacks arranged at the bottom ends of each guiding bracket, one-way roller conveyors and sliding grooves arranged on each guiding bracket, a row of locking positioning plates and two sliders arranged in each sliding groove, and an X-shaped hinge frame connected between the pair of guiding brackets. This application realizes the support and guidance during the steel pipe jacking by setting two guiding brackets with adjustable spacing and using the one-way rollers at their tops. However, when facing steel pipes with different diameters, this device needs to pre-adjust the spacing of the two guiding brackets before hoisting and placing them for use. However, even the steel pipes used in the same batch of pipe curtains will have different diameters due to different engineering design requirements or different geological conditions. The adaptive adjustment process of this device for steel pipes with different diameters is rather troublesome, so it causes inconvenience in use. Summary of the Utility Model

[0005] Aiming at the above-mentioned prior art, the utility model aims to provide a pipe curtain jacking device, and the main technical problem to be solved is how to conveniently adjust the device to adapt to steel pipes with different diameters.

[0006] To achieve the above purpose, the technical solution of the embodiment of the utility model is realized as follows:

[0007] A pipe curtain jacking device includes a lifting platform and a fixed frame. The fixed frame is fixedly connected to the top of the lifting platform. A support mechanism is provided at the top of the fixed frame, and an adjustment mechanism is provided inside the fixed frame. The support mechanism includes a support plate. Both sides at the top of the support plate are fixedly connected with side plates. A plurality of roller shafts are rotatably connected between the two side plates. A plurality of ribs are provided on the outer part of the roller shafts. The roller shafts and the ribs are used for the support and guidance of steel pipes. The adjustment mechanism includes a support piece and a driving component. The driving component is used to drive the support piece to move. The support plate adjusts the angle of the roller shafts through the movement of the support piece. A control mechanism is provided on the lifting platform. The control mechanism is used to control the adaptability between the roller shafts and the steel pipes.

[0008] Further, the bottom end of one inner wall of the fixed frame is rotatably connected with a bidirectional threaded rod, and a circular through hole is provided at the bottom end of the other side of the fixed frame. One end of the bidirectional threaded rod extends to the outside of the fixed frame at the circular through hole.

[0009] Further, a machine shell is fixedly connected to the side wall of the fixed frame outside the circular through hole. The driving component includes a motor, and the output shaft of the motor is fixedly connected with the bidirectional threaded rod.

[0010] Further, threaded sleeves are respectively threadedly connected to both ends of the rod body of the bidirectional threaded rod inside the fixed frame. Chutes are provided at the bottom ends of the two threaded sleeves. Guide rails are fixedly connected to the bottom inner wall of the fixed frame. The guide rails are respectively slidably connected with the two threaded sleeves at the two chutes.

[0011] Further, brackets are fixedly connected to the top ends of the two threaded sleeves. Both brackets are in the shape of "A". The number of support pieces is equal to that of the brackets. The support pieces are rotatably connected to the top ends of the brackets. Torsion springs are fixedly connected between the two support pieces and the two brackets respectively.

[0012] Further, the number of support plates is two. The two support plates are respectively rotatably connected to the top ends of the inner walls on both sides of the fixed frame. The two support pieces are respectively located at the bottom ends of the two support plates, and the top surface of the support piece is in contact with the bottom surface of the support plate.

[0013] Further, a plurality of ribs are fixedly connected to the roller shafts at equal intervals. The material of the roller shafts is stainless steel, the material of the ribs is rubber, and the ribs are in the shape of an annular ring with a thinner outer part and a thicker inner part.

[0014] Further, the control mechanism includes a controller, an inclination sensor and a display. The controller is electrically connected to the inclination sensor, the display, the motor and the driving component of the lifting platform. The inclination sensor is arranged on the support plate.

[0015] Further, a cover shell is fixedly connected to the outside of the bidirectional threaded rod at the inner bottom end of the fixed frame. A strip-shaped opening is provided at the top end of the cover shell. The width of the strip-shaped opening is equal to twice the thickness of the bracket.

[0016] Furthermore, the top end of the bracket extends to the outside of the housing at the strip-shaped opening. Seals are fixedly connected to both inner sides of the housing at the strip-shaped opening, and the material of the seals is latex.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. When the device is in use, it can be placed in the starting shaft. Then, the steel pipe is hoisted to the top of the two groups of roller shafts. Subsequently, by driving the bidirectional threaded rod to rotate with the motor, the positions of the two supporting pieces can be adjusted, thereby adjusting the two supporting plates so that both groups of roller shafts are tangent to the outer wall of the steel pipe. In this case, the roller shafts can support the steel pipe and play a role in limiting and guiding its movement. Moreover, since the angle of the roller shafts can be adjusted in real time by the motor, this device can adapt to steel pipes of different diameters, provide stable support and guiding effects for them, and thus improve the efficiency of pipe curtain jacking construction and enhance the reliability and safety of the operation.

[0019] 2. By providing an A-shaped bracket between the threaded sleeve and the supporting piece, a stable triangular structure can be formed with its top surface and the threaded sleeve. Therefore, when the steel pipe is placed on the two groups of roller shafts, the bracket can provide more sufficient support for the supporting plate. At the same time, the ribs on the outer side of the roller shafts can not only prevent the steel pipe from moving and misaligning through friction but also provide a cushioning effect, thereby further ensuring the stability when the steel pipe is jacked in.

[0020] 3. This device is arranged on the lifting platform, so it is convenient to adjust the alignment between the steel pipe and the target jacking point by using the lifting platform. In addition, multiple such devices can be arranged in parallel on the same lifting platform to provide sufficient paths for the steel pipe to move when being jacked in.

[0021] 4. By providing a housing inside the fixed frame, the housing can protect the bidirectional threaded rod and the threaded sleeve threadedly connected thereto, so as to avoid a large amount of dust or debris in the underground environment from adhering to the outside of the bidirectional threaded rod and affecting the transmission effect between it and the threaded sleeve. The seal made of latex material can only deform locally on the outer side of the bracket due to its soft characteristics, so it can block the strip-shaped opening and prevent dust from directly entering the housing from here. Description of the Drawings

[0022] Figure 1 It is a front cross-sectional view of a pipe curtain jacking device in Embodiment 1 of the present application;

[0023] Figure 2 It is a perspective view of the supporting plate of a pipe curtain jacking device in Embodiment 1 of the present application;

[0024] Figure 3 It is a perspective view of the fixed frame of a pipe curtain jacking device in Embodiment 2 of the present application.

[0025] Explanation of the reference numerals in the drawings:

[0026] Lifting platform 1, threaded sleeve 2, bidirectional threaded rod 3, guide rail 4, motor 5, housing 6, fixed frame 7, side plate 8, support plate 9, roller 10, rib 1001, support piece 11, torsion spring 12, bracket 13, housing 14, seal 15. Specific implementation manners

[0027] The technical solution of the present utility model will be further elaborated in detail below in conjunction with the drawings in the specification and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. In the following description, the expression "some embodiments" is used, which describes a subset of all possible embodiments. However, it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0028] It should be further noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "inner", "outer", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0029] Embodiment 1

[0030] Refer to the attached Figure 1-2, this application provides a pipe jacking device, including a lifting platform 1 and a fixed frame 7. The fixed frame 7 is in a "U" shape and is fixedly connected to the top of the lifting platform 1. Therefore, the height of the fixed frame 7 can be adjusted by operating the lifting platform 1, so as to ensure that the steel pipe can be aligned with the jacking point. A support mechanism is provided at the top of the fixed frame 7, and an adjustment mechanism is provided inside the fixed frame 7. The support mechanism includes a support plate 9. Both sides of the top of the support plate 9 are fixedly connected with side plates 8. A plurality of roller shafts 10 are rotatably connected between the two side plates 8. The roller shafts 10 can be used to support the steel pipe in a state tangent to the steel pipe. In this state, the steel pipe can not only be stably supported, but also when the steel pipe is jacked in, the roller shafts 10 can make the movement of the steel pipe smoother through their own rotation. Therefore, it can bring convenience to the jacking of the steel pipe. A plurality of ribs 1001 are provided on the outer part of the roller shafts 10. The roller shafts 10 and the ribs 1001 are used for the support and guidance of the steel pipe. The ribs 1001 made of rubber material can not only cushion the steel pipe, but also prevent the lateral deviation of the steel pipe through their own friction force. Therefore, it can make the jacking process of the steel pipe smoother and more accurate. The adjustment mechanism includes a support piece 11 and a driving component. The driving component is used to drive the support piece 11 to move. The support plate 9 adjusts the angle of the roller shafts 10 through the movement of the support piece 11. By adjusting the angle of the roller shafts 10, this device can make the roller shafts 10 support the steel pipe in a state tangent to the outer wall of the steel pipe when facing steel pipes with different diameters, so as to ensure that the roller shafts 10 can provide sufficient support effect for the steel pipe. A control mechanism is provided on the lifting platform 1, and the control mechanism is used to control the adaptability between the roller shafts 10 and the steel pipe. <> <>

[0031] Preferably, the bottom end of one inner wall of the fixed frame 7 is rotatably connected with a bidirectional threaded rod 3, and a circular through hole is opened at the bottom end of the other side of the fixed frame 7. One end of the bidirectional threaded rod 3 extends to the outside of the fixed frame 7 at the circular through hole. A machine shell 6 is fixedly connected to the side wall of the fixed frame 7 outside the circular through hole. The driving component includes a motor 5. The output shaft of the motor 5 is fixedly connected with the bidirectional threaded rod 3. The motor 5 can be a stepping motor. Since the stepping motor can accurately control the rotation angle, this characteristic can be used to conveniently and accurately adjust the angle of the roller shafts 10, so as to be more suitable for the use of steel pipes with different diameters. <> <>

[0032] Preferably, threaded sleeves 2 are threadedly connected to both ends of the rod body of the bidirectional threaded rod 3 outside the fixed frame 7. Chutes are provided at the bottom ends of the two threaded sleeves 2. Guide rails 4 are fixedly connected to the inner wall of the bottom end of the fixed frame 7. The guide rails 4 are slidably connected to the two threaded sleeves 2 at the positions of the two chutes respectively. The guide rails 4 can guide the threaded sleeves 2, that is, the guide rails 4 will restrict the rotation of the threaded sleeves 2 so that they can only move linearly in the horizontal direction. And because of the reverse self-locking effect of the transmission between the bidirectional threaded rod 3 and the threaded sleeve 2, after using the movement of the threaded sleeve 2 to adjust the position of the support piece 11 and the angle of the support plate 9, the support piece 11 will restrict the support plate 9 from deflecting downward any further. In this case, sufficient support effect can be provided for the steel pipe.

[0033] Preferably, brackets 13 are fixedly connected to the top ends of the two threaded sleeves 2. The two brackets 13 are both in an "A" shape. The number of the support pieces 11 is equal to that of the brackets 13, and the support pieces 11 are rotatably connected to the top ends of the brackets 13. The brackets 13 are used to support the support plate 9. Since the support plate 9 will bear the pressure caused by the weight of the steel pipe, the pressure that the brackets 13 can bear is very crucial. The bracket 13 in an "A" shape can form a stable triangular structure with the top surface of the threaded sleeve 2 to assist in bearing the weight of the steel pipe. And torsion springs 12 are fixedly connected between the two support pieces 11 and the two brackets 13 respectively. The torsion springs 12 can ensure that the initial state of the support piece 11 is horizontal. Therefore, after the roller 10 presses the support piece 11 and causes it to deflect, the torsion spring 12 can make the support piece 11 closely adhere to the support plate 9 through its own elastic force, thereby improving the support effect of the support piece 11 on the support plate 9.

[0034] Preferably, the number of the support plates 9 is two. The two support plates 9 are respectively rotatably connected to the top ends of the inner walls on both sides of the fixed frame 7. The two support pieces 11 are respectively located at the bottom ends of the two support plates 9, and the top surface of the support piece 11 is in contact with the bottom surface of the support plate 9. The top surface of the support piece 11 and the bottom surface of the support plate 9 are both smoothed, so the friction between the support piece 11 and the support plate 9 during the movement of the support piece 11 can be reduced; in addition, a number of spherical grooves can also be provided on the top surface of the support piece 11, and balls are embedded in the spherical grooves. In this case, the balls can replace the contact between the support piece 11 and the support plate 9, and can use their own rolling to replace the friction when the two move relatively, so that the process of the movement of the support piece 11 to push the support plate 9 to deflect can be smoother.

[0035] Preferably, a plurality of ribs 1001 are fixedly connected to the outside of the roller shaft 10 at equal intervals. The material of the roller shaft 10 is stainless steel. The roller shaft 10 made of stainless steel has sufficient strength to support the steel pipe. And since after the steel pipe is placed, the rubber material ribs 1001 will contact the steel pipe instead of the roller shaft 10, there is no need to worry about the situation that the roller shaft 10 and the steel pipe, both being hard materials, will be squeezed against each other due to gravity and cause indentation. The material of the ribs 1001 is rubber, and the ribs 1001 are in the shape of an annular ring with a thin outer side and a thick inner side. After the ribs 1001 in this form contact the steel pipe, the gravity of the latter will press the thin edge on the outer side of the former, causing the thin sheet to deform. In this case, the ribs 1001 will have a larger contact area with the steel pipe, so as to ensure the maintenance of its stability.

[0036] Preferably, the control mechanism includes a controller, an inclination sensor and a display. The controller is electrically connected to the inclination sensor, the display, the motor 5 and the driving components of the lifting platform 1. The inclination sensor is arranged on the pallet 9. The controller is an 8051 single-chip microcomputer, and the model of the inclination sensor is SCT726T. The inclination sensor can monitor the angle of the roller shaft 10 in real time as the pallet 9 deflects, and transmit the signal to the controller, and then the display can display the angle value in real time. According to this value, the controller can further control the operation of the motor 5. Since the stepping motor can accurately control the rotation angle, the controller can adjust the angle of the roller shaft 10 to best fit the steel pipe and provide stable support for it. In addition, the controller can also perform alignment during the process of jacking the steel pipe by controlling the operation of the lifting platform 1.

[0037] Working principle: When using this device for guiding and supporting during the jacking of the pipe-sheet steel pipe, the device can be lowered into the launching shaft by a crane, and then the steel pipe is hoisted and placed on the two roller shafts 10. Then, by starting the lifting platform 1, the height of the fixed frame 7 can be adjusted to align the steel pipe with the jacking point. After that, by starting the pipe jacking machine, the steel pipe can be jacked in. During this process, the two roller shafts 10 can provide the effects of support and guidance for the steel pipe through their own rolling and the state of being inclined downward by themselves, and the ribs 1001 can also prevent the steel pipe from laterally shifting during the process of being pushed and moved through friction, so as to ensure the stable progress of the jacking process;

[0038] When steel pipes of different diameters need to be jacked in, the motor 5 can be started. The motor 5 drives the bidirectional threaded rod 3 to rotate, which can make the two threaded sleeves 2 move in the X-axis direction in opposite directions. Therefore, the two threaded sleeves 2 can be adjusted to move away from each other accordingly. At this time, the threaded sleeves 2 can drive the support pieces 11 to move through the brackets 13. At this time, the pallet 9 will deflect downward due to the gravity of the steel pipe and its own weight, so as to adjust the angle of the roller shaft 10 until the roller shaft 10 is tangent to the outer wall of the steel pipe, so as to make this device adapt to steel pipes of different diameters and provide sufficient support and guidance effects for them.

[0039] Example 2

[0040] Refer to the attached Figure 3 Figure 3

[0041] Working principle: The housing 14 can protect the bidirectional threaded rod 3 inside the fixed frame 7. At the same time, due to the soft characteristics of the sealing strip 15 made of latex material, it can only deform locally on the outside of the support 13. Therefore, it can block the strip-shaped opening, so as to avoid dust or debris adhering to the outside of the bidirectional threaded rod 3 when the device is used underground, which affects the smoothness and precision of the transmission between it and the threaded sleeve 2, thereby ensuring the accuracy of the angle adjustment of the roller shaft 10.

[0042] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pipe roof jacking device, comprising a lifting platform (1) and a fixed frame (7), characterized in that, The fixed frame (7) is fixedly connected to the top of the lifting platform (1). A support mechanism is provided at the top of the fixed frame (7), and an adjustment mechanism is provided inside the fixed frame (7). The support mechanism includes a support plate (9). Both sides of the top of the support plate (9) are fixedly connected with side plates (8). A plurality of roller shafts (10) are rotatably connected between the two side plates (8). A plurality of ribs (1001) are provided on the outer part of the roller shaft (10). The roller shaft (10) and the ribs (1001) are used for supporting and guiding the steel pipe. The adjustment mechanism includes a support piece (11) and a driving component. The driving component is used to drive the support piece (11) to move. The support plate (9) adjusts the angle of the roller shaft (10) through the movement of the support piece (11). A control mechanism is provided on the lifting platform (1), and the control mechanism is used to control the matching degree between the roller shaft (10) and the steel pipe.

2. The pipe roof jacking device according to claim 1, characterized in that, One end of the inner bottom wall of the fixed frame (7) is rotatably connected with a bidirectional threaded rod (3), and a circular through hole is provided at the other bottom end of the fixed frame (7). One end of the bidirectional threaded rod (3) extends to the outside of the fixed frame (7) at the circular through hole.

3. The pipe roof jacking device according to claim 2, characterized in that, A machine shell (6) is fixedly connected to the side wall of the fixed frame (7) outside the circular through hole. The driving component includes a motor (5). The output shaft of the motor (5) is fixedly connected with the bidirectional threaded rod (3).

4. The pipe roof jacking device according to claim 3, characterized in that, Threaded sleeves (2) are respectively threaded on both ends of the rod body of the bidirectional threaded rod (3) inside the fixed frame (7). Chutes are provided at the bottom ends of the two threaded sleeves (2). Guide rails (4) are fixedly connected to the inner bottom wall of the fixed frame (7). The guide rails (4) are respectively slidably connected with the two threaded sleeves (2) at the two chutes.

5. The pipe roof jacking device according to claim 4, characterized in that, Both tops of the two threaded sleeves (2) are fixedly connected with brackets (13). Both brackets (13) are in an "A" shape. The number of the support pieces (11) is equal to that of the brackets (13). The support pieces (11) are rotatably connected to the tops of the brackets (13). A torsion spring (12) is fixedly connected between each of the two support pieces (11) and each of the two brackets (13).

6. The pipe roof jacking device according to claim 5, characterized in that, The number of the support plates (9) is two. The two support plates (9) are respectively rotatably connected to the top ends of the inner side walls of the two sides of the fixed frame (7). The two support pieces (11) are respectively located at the bottom ends of the two support plates (9), and the top surface of the support piece (11) is in contact with the bottom surface of the support plate (9).

7. A pipe roof jacking device according to claim 1, characterized in that, A plurality of the ribs (1001) are fixedly connected to the outer part of the roller shaft (10) at equal intervals. The material of the roller shaft (10) is stainless steel. The material of the ribs (1001) is rubber, and the ribs (1001) are in an annular shape with a thin outer part and a thick inner part.

8. The pipe roof jacking device according to claim 1, characterized in that, The control mechanism includes a controller, an inclination sensor and a display. The controller is electrically connected to the inclination sensor, the display, the motor (5) and the driving component of the lifting platform (1). The inclination sensor is arranged on the support plate (9).

9. The pipe roof jacking device according to claim 5, wherein, A cover shell (14) is fixedly connected to the outer part of the bidirectional threaded rod (3) at the inner bottom end of the fixed frame (7). A strip-shaped opening is provided at the top of the cover shell (14). The width of the strip-shaped opening is equal to twice the thickness of the bracket (13).

10. The pipe roof jacking device according to claim 9, characterized in that, The top end of the bracket (13) extends to the outside of the housing (14) at the strip-shaped opening. Seals (15) are fixedly connected to both inner sides of the strip-shaped opening of the housing (14), and the material of the seals (15) is latex.

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