Rectangular jacking pipe joint posture adjusting device

Abstract

The utility model designs a rectangular jacking pipe joint posture adjusting device which comprises a rotating mechanism, an upper operating platform, a clamping mechanism and a conveying mechanism. The rotating mechanism comprises a heavy-load rotating platform and a thin hydraulic cylinder arranged at the bottom of the heavy-load rotating platform; the upper operation platform comprises a clamping mechanism and a conveying mechanism, limiting grooves are formed in the two sides of the upper operation platform and used for containing the conveying mechanism, and roller grooves are formed in the middle of the upper operation platform and used for containing conveying rollers. The clamping mechanism comprises a clamping hydraulic cylinder and a clamping head, and the clamping head is pushed by the clamping hydraulic cylinder to move in the pipe joint direction to achieve clamping and pipe piece position adjustment. The conveying mechanism comprises a lead screw, a sliding block and a servo motor, the lead screw is sleeved with the sliding block, and the lead screw is driven by the servo motor to change the position of the sliding block. According to the utility model, through the independent and combined work of each mechanism, the hoisting and posture adjustment of the duct piece are realized, and the final jacking and smooth butt joint are realized; and the torque rate generated by the pipeline in the construction process is reduced to a certain extent.

Description

Technical Field

[0001] The utility model relates to the field of pipe jacking correction, in particular to a device for adjusting the posture of a rectangular pipe jacking section. Background Art

[0002] Pipe jacking is a trenchless excavation technique for underground projects. It utilizes the thrust provided by main jacks on pipe segments, combined with various excavation methods at the face, to achieve tunneling. This trenchless technique has minimal impact on the surrounding environment and is widely used in my country for trenchless projects involving various pipelines, including underground water supply pipelines and communication cable pipelines. When rectangular pipe segments are used, the resulting rectangular tunnels can meet the requirements of similar underground passageways, such as pedestrian walkways.

[0003] During the pipe jacking process, the cutting and pushing of the tool pipe depends solely on the thrust transmitted by the main jack through each pipe segment. Since it is necessary to overcome the frictional resistance that increases with the increase in jacking length and provide sufficient thrust to ensure the normal working condition of the tunnel face, the main jack will exert a large thrust on the pipe segment.

[0004] Existing pipe segment docking often involves hoisting the pipe segments onto tracks or placing them directly on the soil at the bottom of the foundation pit, and then using the main jack to push them forward to achieve docking. These two methods cannot achieve precise docking at the joints of two adjacent pipe segments. When the pipes cannot be well docked and transmit the jacking force, it is easy to cause torque in the pipes during construction, resulting in pipe twisting and deviation. At the same time, since most pipe sections are connected by a joint, when there is an uneven docking between the two pipe sections, it is easy to cause damage to structures such as the steel socket, wooden gasket and sealing material at the joint, thereby affecting the force transmission and waterproofing properties of the pipe segments, and even causing the pipe segments themselves to be damaged.

[0005] Therefore, in order to solve the above problems, the utility model provides a correction device with high degree of freedom, simple operation, and the ability to adjust the posture of rectangular jacking pipe segments. Utility Model Content

[0006] The purpose of this utility model is to provide a device for adjusting the posture of a rectangular pipe section.

[0007] It includes a rotating mechanism, an upper operating platform, a clamping mechanism and a transport mechanism;

[0008] The rotating mechanism includes a rotating platform and a thin hydraulic cylinder arranged at the bottom of the rotating platform. By controlling the thin hydraulic cylinder, the rotating platform can be lifted, lowered, tilted, etc. to a certain extent, and the posture of the pipe segment can be adjusted by controlling the rotating platform.

[0009] The upper operating platform includes a clamping mechanism and a transport mechanism. Limiting grooves are opened on both sides of the upper operating platform to place the transport mechanism, and a roller groove is opened in the middle of the upper operating platform to place the transmission roller.

[0010] The clamping mechanism includes a clamping hydraulic cylinder and a clamping head. The clamping head moves toward the pipe segment under the push of the clamping hydraulic cylinder. A clamping rubber pad is provided on the side of the clamping head that contacts the pipe segment to protect the pipe segment. The clamping force can be adjusted by adjusting the pressure of the hydraulic cylinder. The clamping and posture adjustment of the pipe segment can be achieved by controlling the stroke of the two hydraulic cylinders.

[0011] The transport mechanism comprises a screw rod, a sliding block and a servo motor. The sliding block is sleeved on the screw rod and is driven by the servo motor to change the position of the sliding block, thereby achieving the docking of the pipe sections and the adjustment of their posture.

[0012] Furthermore, four thin hydraulic cylinders are arranged under the rotating platform, and the rotating platform and the four thin hydraulic cylinders are connected by ball joints; the rotating platform and the upper operating platform are connected by bolts, and a rubber pad is arranged between the rotating platform and the upper operating platform.

[0013] Furthermore, the limit grooves are opened on both sides of the operating platform, and the direction is along the pipe section pushing direction; the roller groove is opened in the middle of the operating platform, and the direction is along the pipe section pushing direction; roller shaft grooves are opened on both sides of the roller groove to fix the position of the conveying roller.

[0014] Furthermore, one end of the clamping hydraulic cylinder is connected to the sliding block, and the other end is connected to the clamping head; the sliding block is threadedly connected to the screw rod, and the clamping hydraulic cylinder and the clamping head move as the sliding block moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 This is a top view of the heavy-load rotating platform of the present invention;

[0018] Figure 4 This is a top view of the upper operating platform of the utility model;

[0019] Numbers in the figure: 1. Rotating mechanism; 11. Heavy-loaded rotating platform; 12. Thin hydraulic cylinder; 13. Ball joint; 14. Pad; 15. Rotating platform rubber pad; 16. Bolt hole; 2. Upper operating platform; 21. Limiting groove; 22. Roller groove; 23. Conveying roller; 3. Clamping mechanism; 31. Clamping hydraulic cylinder; 32. Clamping head; 33. Clamping rubber pad; 4. Transport mechanism; 41. Screw; 42. Sliding block; 43. Servo motor. DETAILED DESCRIPTION

[0020] In order to describe the technical problems and technical solutions to be solved by the present invention in more detail, preferred embodiments of the present invention are shown. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0021] refer to Figure 1 and Figure 2 A rectangular jacking pipe segment posture adjustment device is arranged at the bottom of the foundation pit, and includes a rotating mechanism 1, an upper operating platform 2, a clamping mechanism 3 and a transport mechanism 4. A pad 14 is arranged at the lower part of the device to disperse the force of the upper structure and load transfer. The pad 14 is connected to the thin hydraulic cylinder 12, and the thin hydraulic cylinder 12 is connected to the heavy-load rotating platform 11 thereon by a ball joint 13 to ensure a high degree of freedom at the hinge. A stiffening plate is provided between the driving structure at the lower part of the heavy-load rotating platform 11 and the rotating structure at the upper part, which can increase the reliability of the heavy-load rotating platform 11.

[0022] refer to Figure 3 The surface of the upper part of the heavy-loaded rotating platform 11 that contacts the upper operating platform 2 is provided with a rotating platform rubber pad 15 and bolt holes 16 that are fixed radially and distributed circumferentially. The rubber pad plays the role of shock absorption and buffering and makes the structure fit tightly. The upper operating platform 2 and the heavy-loaded rotating platform 11 are connected by bolts. When the heavy-loaded rotating platform 11 rotates, the upper operating platform 2 is driven to rotate through the joint action of the bolts and the rubber pad.

[0023] refer to Figure 4The upper operating platform 2 is provided with a clamping mechanism 3 and a transport mechanism 4. The clamping mechanism 3 includes a clamping hydraulic cylinder 31 and a clamping head 32. A clamping rubber pad 33 is provided on the side of the clamping head 32 that contacts the pipe section to protect the pipe section. The transport mechanism 4 includes a screw rod 41, a sliding block 42, a servo motor 43, and a transmission roller 23. The servo motor 43 can drive the screw rod 41 to move the sliding block 42. By adjusting the clamping hydraulic cylinder 31 and the sliding block 42 and cooperating with the transmission roller 23, the clamping and movement of the pipe section can be achieved. Limiting grooves 21 are opened on both sides of the northern operating platform, and the direction is along the pipe section jacking direction. The roller groove 22 is opened in the middle of the operating platform, and the direction is along the pipe section jacking direction; roller shaft grooves are opened on both sides of the roller groove 22 to fix the position of the transmission roller 23. At the same time, different models of transmission rollers 23 can be used according to needs.

[0024] The specific operation process of the present invention is:

[0025] When in use, first install the entire device at the bottom of the foundation pit, and align the device basically with the design axis.

[0026] First, when the pipe segment is in the stage of hoisting and docking, the device is lifted to a suitable height by adjusting the thin hydraulic cylinder 12; when it is about to be clamped, through the joint adjustment of the heavy-load rotating platform 11, the servo motor 43 and the clamping hydraulic cylinder 31, a single clamping head 32 can be used to contact the pipe segment to slow down the shaking and rotation generated when the pipe segment is hoisted, and then the two clamping mechanisms 3 work at the same time to achieve the clamping of the pipe segment. This clamping method can control the possible deviation and rotation of the pipe segment when it is hoisted to the specified position, and at the same time avoid the collision of the pipe segment. After the pipe segment is clamped stably, the vertical position of the pipe segment is adjusted by adjusting the thin hydraulic cylinder 12 so that the two pipe segments are at the same height, and then the heavy-load rotating platform is activated. The platform 11 realizes the axial adjustment of the pipe segment, adjusts the contact surfaces of the two pipe segments to the same axis, and then realizes the lateral movement of the pipe segment on the plane with the axial direction as the normal direction by the extension amount of the two clamping hydraulic cylinders 31. After the above adjustment process is completed, the contact surfaces of the two pipe segments are the same height and basically aligned. Then, by adjusting the thin hydraulic cylinder 12, the angle of the pipe segment on the plane with the axial direction as the normal direction and the axial inclination are adjusted, so that the contact surfaces of the two pipe segments are parallel to each other and aligned in angle. Through the above operations, the two pipe segments can finally be consistent in height, angle and parallelism. At the same time, continuous adjustment can also be carried out during the jacking process, and finally the two pipe segments can be smoothly docked.

[0027] The utility model can realize the smooth docking of the pipe segments from hoisting, posture adjustment to final jacking through the separate and combined work of various mechanisms; reduce the torque generated by the pipeline during the construction process, and reduce the pipeline torsion and deviation; at the same time, due to the high docking accuracy, it can effectively protect the safety of structures such as the steel socket, wooden gasket and sealing material at the joint, thereby reducing the probability of water leakage and pipe segment damage caused by damage to the joint.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any equivalent substitution, modification, or other variation of the technical solution and technical content disclosed herein that does not depart from the scope of the present invention is considered to be within the scope of the present invention and remains within the scope of protection of the present invention.

Claims

1. A rectangular pipe jacking section posture adjustment device, characterized in that: include: Rotating mechanism (1), upper operating platform (2), clamping mechanism (3) and transport mechanism (4); The rotating mechanism (1) comprises a heavy-load rotating platform (11) and a thin hydraulic cylinder (12) arranged at the bottom of the heavy-load rotating platform (11). By controlling the thin hydraulic cylinder (12), the heavy-load rotating platform (11) can be lifted, lowered and tilted to a certain extent. By controlling the heavy-load rotating platform (11), the docking and posture adjustment of the pipe segments can be achieved. The upper operating platform (2) includes a clamping mechanism (3) and a transport mechanism (4). Limiting grooves (21) are provided on both sides of the upper operating platform (2) to accommodate the transport mechanism (4). A roller groove (22) is provided in the middle of the upper operating platform (2) to accommodate a transport roller (23). The clamping mechanism (3) comprises a clamping hydraulic cylinder (31) and a clamping head (32); the clamping head (32) moves toward the pipe segment under the push of the clamping hydraulic cylinder (31).

2. The rectangular jacking pipe segment posture adjustment device according to claim 1 is characterized in that: A clamping rubber pad (33) is provided on the side of the clamping head (32) that contacts the pipe joint to protect the pipe joint. The clamping force can be adjusted by adjusting the pressure of the clamping hydraulic cylinder (31). The butt joint and posture adjustment of the pipe joint can be achieved by controlling the extension amount of the clamping hydraulic cylinder (31).

3. The rectangular jacking pipe segment posture adjustment device according to claim 1 is characterized in that: The transport mechanism (4) comprises a screw rod (41), a sliding block (42) and a servo motor (43). The sliding block (42) is sleeved on the screw rod (41). The screw rod (41) is driven by the servo motor (43) to change the position of the sliding block (42), thereby achieving docking of the pipe section and adjustment of the posture.

4. The rectangular jacking pipe segment posture adjustment device according to claim 1 is characterized in that: A plurality of thin hydraulic cylinders (12) are arranged under the heavy-load rotating platform (11), and a ball joint (13) is used to connect the heavy-load rotating platform (11) and the plurality of thin hydraulic cylinders (12). A pad (14) is provided at the bottom of the thin hydraulic cylinder (12). The heavy-load rotating platform (11) and the upper operating platform (2) are connected by bolts, and a rubber pad is provided between the heavy-load rotating platform (11) and the upper operating platform (2).

5. The rectangular jacking pipe segment posture adjustment device according to claim 1 is characterized in that: The limiting grooves (21) are provided on both sides of the operating platform and are oriented along the pipe section jacking direction. The roller grooves (22) are provided in the middle of the operating platform and are oriented along the pipe section jacking direction. Roller shaft grooves are provided on both sides of the roller grooves (22) for fixing the position of the transmission rollers (23). Different types of transmission rollers (23) can be used according to requirements.

6. The rectangular jacking pipe segment posture adjustment device according to claim 1, characterized in that: One end of the clamping hydraulic cylinder (31) is connected to the sliding block (42), and the other end is connected to the clamping head (32). The sliding block (42) is threadedly connected to the screw rod (41). The clamping hydraulic cylinder (31) and the clamping head (32) move as the sliding block (42) moves.

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