Pipe joint rotation stopping structure for pipe jacking construction

Abstract

The utility model relates to the technical field of pipe jacking construction, in particular to a pipe joint rotation stopping structure for pipe jacking construction, which comprises a rotation stopping insertion rod arranged on the rear end face of a pipe jacking machine / the rear end face of a pipe joint body in a protruding manner, a guide rod arranged on the inner wall of a working well, and a limiting arm of which one end is detachably connected to the rotation stopping insertion rod and the other end slidably sleeves the guide rod, the axial direction of the rotation stopping insertion rod is parallel to the axial direction of the pipe jacking machine / pipe joint body, the axial direction of the guide rods is parallel to the axial direction of the rotation stopping insertion rod, the two guide rods are located on the two sides of the pipe jacking machine / pipe joint body respectively, and a rotation stopping insertion hole allowing the rotation stopping insertion rod to be inserted is coaxially formed in the front end face of the pipe joint body. The pipe jacking construction method has the effect of improving the pipe jacking construction efficiency.

Description

Technical Field

[0001] This application relates to the field of pipe jacking construction technology, and in particular to a pipe section anti-rotation structure for pipe jacking construction. Background Technology

[0002] Pipe jacking is a popular construction method for small and medium-sized underground tunnels in soft soil strata due to its high efficiency and cost-effectiveness. This method requires first inserting a pipe jacking machine into the underground soil layer, followed by the continuous jacking of subsequent pipe sections. During the jacking process, if the frictional resistance between the pipe jacking machine, the jacked pipe sections, and the soil cannot balance the reverse torque generated by the rotation of the pipe jacking machine's cutterhead, the machine and the jacked pipe sections will rotate, causing extremely adverse effects on jacking operations, surveying, soil removal, and water sealing.

[0003] In existing technology, to control the circumferential attitude of the pipe jacking machine during normal jacking, frames for placing counterweights are installed on both sides behind the machine head or pipe section, and the counterweights are evenly distributed. When the pipe jacking machine turns right, the counterweights on the right are moved to the left; conversely, when the machine turns left, the counterweights on the left are moved to the right. During operation, the counterweights need to be repeatedly moved according to the rotation trend of the pipe jacking machine and pipe section, resulting in low construction efficiency. Therefore, further improvement is needed. Utility Model Content

[0004] To improve the efficiency of pipe jacking construction, this application provides a pipe section anti-rotation structure for pipe jacking construction.

[0005] The anti-rotation structure for pipe sections used in pipe jacking construction provided in this application adopts the following technical solution:

[0006] A pipe section anti-rotation structure for pipe jacking construction includes an anti-rotation insertion rod protruding from the rear end face of the pipe jacking machine / the rear end face of the pipe section body, a guide rod disposed on the inner wall of the working shaft, and a limiting arm with one end detachably connected to the anti-rotation insertion rod and the other end slidably sleeved on the guide rod. The axial direction of the anti-rotation insertion rod is parallel to the axial direction of the pipe jacking machine / pipe section body, and the axial direction of the guide rod is parallel to the axial direction of the anti-rotation insertion rod. Two guide rods are provided and are respectively located on both sides of the pipe jacking machine / pipe section body. The front end face of the pipe section body is coaxially provided with an anti-rotation insertion hole for inserting the anti-rotation insertion rod.

[0007] By adopting the above technical solution, the anti-rotation insert, guide rod, and limiting arm effectively prevent the pipe jacking machine and the pipe section body from rotating during the jacking process. Specifically, the anti-rotation insert protrudes from the rear end face of the pipe jacking machine or the pipe section body and cooperates with the anti-rotation insertion hole opened on the front end face of the pipe section body to ensure that the connection between each pipe section is a whole; the two guide rods are located on both sides of the pipe jacking machine or the pipe section body, respectively, to provide guidance and support for the limiting arm. One end of the limiting arm can be detachably connected to the pipe section to be jacked, thereby restraining the rotation trend of the pipe jacking machine and the pipe section body. The overall structure does not require additional correction operations, thus greatly improving the efficiency of pipe jacking construction.

[0008] Preferably, the anti-rotation insert is a threaded rod, and the end of the limiting arm away from the guide rod has a through hole for inserting the anti-rotation insert, and the anti-rotation insert is threadedly connected to an anti-loosening nut that abuts against the outer wall of the limiting arm.

[0009] By adopting the above technical solution, the anti-rotation insert is set as a threaded rod, and a through hole is opened at the end of the limiting arm away from the guide rod, allowing the anti-rotation insert to be inserted into the through hole. Simultaneously, an anti-loosening nut is used to abut against the outer wall of the limiting arm for fixation. This enables quick connection and disassembly of the limiting arm and the anti-rotation insert, effectively preventing the limiting arm from loosening during the jacking process, thereby further enhancing the reliability of the entire anti-rotation structure.

[0010] Preferably, the limiting arm includes a limiting tube sleeved on the guide rod and a limiting rod slidably inserted into the limiting tube along the axial direction. The limiting tube is provided with an adjusting component for adjusting the sliding position of the limiting rod, and the end of the limiting rod is detachably connected to the anti-rotation insert rod.

[0011] By adopting the above technical solution, the limiting arm consists of a limiting tube and a limiting rod. The limiting rod can slide along the axial direction of the limiting tube and be fixed in position by the adjusting component, thereby adapting to the needs of different lengths and enhancing the flexibility and applicability of the structure.

[0012] Preferably, the limiting rod is a threaded rod, and the adjusting component is an adjusting sleeve coaxially rotatably connected to the end of the limiting tube away from the guide rod, with the limiting rod threaded through the adjusting sleeve.

[0013] By adopting the above technical solution, the limiting rod is set as a threaded rod, and the sliding position of the limiting rod can be precisely adjusted by adjusting the threaded sleeve in conjunction with the limiting tube. This design makes the length adjustment of the limiting arm more convenient and stable, thereby better adapting to the needs of different construction scenarios and further improving the flexibility and efficiency of pipe jacking construction.

[0014] Preferably, the guide rod is axially slidably fitted with a sliding sleeve, and the end of the limiting tube is fixedly connected with a rotating sleeve, which is coaxially rotatably fitted onto the sliding sleeve.

[0015] By adopting the above technical solution, the swivel sleeve and the sliding sleeve can rotate relative to each other, making the limiting arm more flexible and convenient when docking with the anti-rotation plug, effectively improving the installation efficiency.

[0016] Preferably, the inner peripheral wall of the sliding sleeve is provided with balls that abut against the outer peripheral wall of the guide rod.

[0017] By adopting the above technical solution, the inner circumferential wall of the sliding sleeve is provided with balls, so that the contact between the sliding sleeve and the guide rod is changed from sliding friction to rolling friction, thereby significantly reducing the frictional resistance between the two.

[0018] Preferably, both ends of the guide rod are fixedly fitted with mounting plates, and a bellows cover fitted on the guide rod is fixedly connected between the mounting plates and the end face of the sliding sleeve.

[0019] By adopting the above technical solution, the bellows cover can effectively prevent impurities such as mud from entering the gap between the guide rod and the sliding sleeve during construction, ensuring the smooth sliding of the sliding sleeve on the guide rod.

[0020] In summary, this utility model has the following beneficial effects:

[0021] 1. The anti-rotation insertion rod protrudes from the rear end face of the pipe jacking machine or the pipe section body and cooperates with the anti-rotation insertion hole opened on the front end face of the pipe section body to ensure that the connection between each pipe section is a whole; two guide rods are located on both sides of the pipe jacking machine or the pipe section body respectively, providing guidance and support for the limiting arm. One end of the limiting arm can be detachably connected to the pipe section to be jacked, thereby constraining the rotation trend of the pipe jacking machine and the pipe section body. The overall structure does not require additional correction operations, thus greatly improving the efficiency of pipe jacking construction.

[0022] 2. The limiting arm consists of a limiting tube and a limiting rod. The limiting rod can slide along the axial direction of the limiting tube and be fixed in position by the adjusting component, thereby adapting to different length requirements and enhancing the flexibility and applicability of the structure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an anti-rotation structure for pipe sections used in pipe jacking construction.

[0024] Figure 2 This is a schematic diagram of the pipe section body;

[0025] Figure 3 This is a schematic diagram of the connection structure between the limiting arm and the anti-rotation plug.

[0026] In the diagram, 10 is the working well; 20 is the pipe jacking machine; 30 is the pipe section body; 301 is the anti-rotation insertion hole; 1 is the anti-rotation insertion rod; 11 is the anti-loosening nut; 2 is the guide rod; 21 is the bracket; 22 is the sliding sleeve; 23 is the mounting plate; 24 is the bellows cover; 3 is the limiting arm; 31 is the limiting tube; 32 is the limiting rod; 33 is the adjusting screw sleeve; 34 is the screw sleeve; and 35 is the collar. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses an anti-rotation structure for pipe sections used in pipe jacking construction, referring to... Figure 1 , Figure 2The system includes an anti-rotation rod 1 protruding and fixed to the rear end face of the pipe jacking machine 20 / the rear end face of the pipe section body 30, a guide rod 2 disposed on the inner wall of the working shaft 10, and a limiting arm 3 with one end detachably connected to the anti-rotation rod 1 and the other end slidably sleeved on the guide rod 2. The anti-rotation rod 1 is a threaded rod, and the axial direction of the anti-rotation rod 1 is parallel to the axial direction of the pipe jacking machine 20 / the pipe section body 30. The front end face of the pipe section body 30 is coaxially provided with an anti-rotation insertion hole 301 for inserting the anti-rotation rod 1.

[0029] Two supports 21 are fixedly connected to the bottom wall of the working shaft 10, located on both sides of the pipe section body 30 / pipe jacking machine 20 respectively. The guide rod 2 is fixedly connected to the support 21, and the axial direction of the guide rod 2 is parallel to the axial direction of the anti-rotation insertion rod 1. The guide rod 2 is slidably fitted with a sliding sleeve 22 along the axial direction. The inner peripheral wall of the sliding sleeve 22 is provided with balls that abut against the outer peripheral wall of the guide rod 2. Mounting plates 23 are fixedly fitted at both ends of the guide rod 2. A bellows cover 24 fitted on the guide rod 2 is fixedly connected between the mounting plate 23 and the end face of the sliding sleeve 22.

[0030] Reference Figure 1 , Figure 3 The limiting arm 3 includes a limiting tube 31 sleeved on the guide rod 2 and a limiting rod 32 slidably inserted into the limiting tube 31 along the axial direction. The limiting tube 31 is provided with an adjusting member for adjusting the sliding position of the limiting rod 32. In this embodiment, the limiting rod 32 is a threaded rod, and the adjusting member is an adjusting screw sleeve 33 coaxially rotatably connected to the end of the limiting tube 31 away from the guide rod 2. The limiting rod 32 is threaded through the adjusting screw sleeve 33. A rotating sleeve 34 is fixedly connected to the outer wall of the end of the limiting tube 31. The rotating sleeve 34 is coaxially rotatably sleeved on the sliding sleeve 22. A collar 35 is fixedly connected to the end of the limiting rod 32 protruding from the end of the limiting tube 31. The inner hole of the collar 35 is a through hole for inserting the anti-rotation insertion rod 1. The anti-rotation insertion rod 1 is threadedly connected to an anti-loosening nut 11 that abuts against the outer wall of the collar 35.

[0031] The implementation principle of the anti-rotation structure for pipe sections used in pipe jacking construction according to an embodiment of this application is as follows: When the pipe jacking machine 20 is jacked in, the collar 35 of the limiting rod 32 is fitted onto the anti-rotation insert 1 at the rear end of the pipe jacking machine 20 and the anti-loosening nut 11 is locked. The pipe jacking machine 20 is restricted by the limiting arm 3 and cannot rotate. After the pipe jacking machine 20 is jacked into place, the anti-loosening nut 11 is removed, the fixing of the limiting arm 3 and the pipe jacking machine 20 is released, the next pipe section body 30 is placed in, and it slides towards the pipe jacking machine 20. The pipe section body 30 allows the anti-rotation rod 1 at the rear end of the pipe jacking machine 20 to be inserted into the anti-rotation insertion hole 301, making the pipe section body 30 and the pipe jacking machine 20 a whole. Then, the collar 35 of the limiting rod 32 is put onto the anti-rotation rod 1 at the rear end of the pipe jacking machine 20 and the anti-loosening nut 11 is locked before the jacking operation of the pipe section body 30 is carried out, thereby restraining the rotation trend of the pipe jacking machine 20 and the pipe section body 30. The overall structure does not require additional correction operations, thus greatly improving the efficiency of pipe jacking construction.

[0032] 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 pipe joint rotation stopping structure for pipe jacking construction, characterized by: The system includes an anti-rotation insert (1) protruding from the rear end face of the pipe jacking machine (20) / the rear end face of the pipe section body (30), a guide rod (2) set on the inner wall of the working well (10), and a limiting arm (3) with one end detachably connected to the anti-rotation insert (1) and the other end slidingly sleeved on the guide rod (2). The axial direction of the anti-rotation insert (1) is parallel to the axial direction of the pipe jacking machine (20) / the pipe section body (30), and the axial direction of the guide rod (2) is parallel to the axial direction of the anti-rotation insert (1). There are two guide rods (2) and they are located on both sides of the pipe jacking machine (20) / the pipe section body (30). The front end face of the pipe section body (30) is coaxially provided with an anti-rotation insertion hole (301) for inserting the anti-rotation insert (1). The anti-rotation insert (1) is a threaded rod. The limiting arm (3) has a through hole at the end away from the guide rod (2) for inserting the anti-rotation rod (1). The anti-rotation rod (1) is threadedly connected to an anti-loosening nut (11) that abuts against the outer wall of the limiting arm (3). The limiting arm (3) includes a limiting tube (31) sleeved on the guide rod (2) and a limiting rod (32) that slides axially into the limiting tube (31). The limiting tube (31) is provided with an adjusting component for adjusting the sliding position of the limiting rod (32). The end of the limiting rod (32) is detachably connected to the anti-rotation rod (1). The guide rod (2) is axially slidably sleeved with a sliding sleeve (22). The end of the limiting tube (31) is fixedly connected with a rotating sleeve (34). The rotating sleeve (34) is coaxially rotated and sleeved on the sliding sleeve (22).

2. A pipe joint rotation stopping structure for pipe jacking construction according to claim 1, characterized in that: The limiting rod (32) is a threaded rod, and the adjusting component is an adjusting sleeve (33) that is coaxially rotatably connected to the end of the limiting tube (31) away from the guide rod (2). The limiting rod (32) is threaded through the adjusting sleeve (33).

3. The pipe joint rotation stopping structure for pipe jacking construction according to claim 1, characterized in that: The inner peripheral wall of the sliding sleeve (22) is provided with balls that abut against the outer peripheral wall of the guide rod (2).

4. The anti-rotation structure for pipe sections used in pipe jacking construction according to claim 3, characterized in that: Both ends of the guide rod (2) are fixedly fitted with mounting plates (23), and a bellows cover (24) fitted on the guide rod (2) is fixedly connected between the mounting plate (23) and the end face of the sliding sleeve (22).

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