A pipe jacking machine deviation rectifying device

Abstract

This invention belongs to the field of pipe jacking machine technology, specifically relating to a pipe jacking machine alignment device, including a support frame, a backrest, and a pushing cylinder. The backrest is mounted on the support frame. Two pushing cylinders are provided, each connected to the support frame via a support plate, which is slidably connected to the support frame. A push plate connects the two pushing cylinders, with through holes and insert plate assemblies cooperating with the pushing cylinders. The cylinder body of the pushing cylinder has slots cooperating with the insert plate assemblies. The push plate is slidably connected to the support frame. A pair of support rails are slidably connected to the support frame. An adjusting frame is slidably connected to the support frame, with an adjusting cylinder between the adjusting frame and the support frame. Both the adjusting frame and the support rails have cooperating inclined blocks. By driving the adjusting frame with the adjusting cylinder, and utilizing the cooperation between the inclined blocks on the adjusting frame and the inclined blocks on the support rails, the height of the pipe support point can be changed, adjusting the axis of pipes of different diameters to be aligned with the machine head axis.

Description

Technical Field

[0001] This invention belongs to the field of pipe jacking machine technology, and specifically relates to a pipe jacking machine correction device. Background Technology

[0002] Pipe jacking, a trenchless pipeline laying method, is widely used in urban underground pipeline construction. In long-distance jacking operations, pipes of different diameters are often required depending on the project specifications. However, when pipes of different diameters are jacked in sequence, their central axis height changes after they are placed on fixed support tracks due to differences in their outer diameters.

[0003] This will cause the axis of the subsequent pipeline to be unable to keep coaxial with the axis of the already advanced jacking head, resulting in an axis misalignment. If this initial axis misalignment caused by the change in pipe diameter is not corrected in time before the preceding jacking begins, the pipeline will be in a skewed state from the beginning, which will not only increase the subsequent jacking resistance and cause uneven stress on the pipe sections, but may even lead to joint damage or serious deviation of the line.

[0004] Traditional methods often rely on manual elevation or on-site modifications to the support structure. These methods suffer from low precision and efficiency, and struggle to achieve rapid and accurate axis repositioning, failing to meet the demands of modern, efficient, and high-precision construction. Therefore, there is an urgent need for a specialized alignment device capable of rapidly and automatically adjusting the support height of pipes of different diameters before jacking operations, ensuring precise alignment with the machine head axis. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention provides a pipe jacking machine alignment device that can correct the position of the pipe axis.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A pipe jacking machine correction device includes a support frame, a backrest, and a pushing cylinder. The backrest is mounted on the support frame. There are two pushing cylinders, which are respectively connected to the support frame via a support plate. The piston rod of the pushing cylinder is connected to the backrest, the cylinder body of the pushing cylinder is rotatably connected to the support plate, and the support plate is slidably connected to the support frame.

[0008] A push plate is connected between the two push cylinders. The push plate is provided with through holes that cooperate with the push cylinders and a plate assembly. The cylinder body of the push cylinder is provided with a slot that cooperates with the plate assembly. The push plate is slidably connected to the support frame.

[0009] The insert plate assembly includes a fixed base and insert plates. The fixed base is fixedly connected to the push plate. Two insert plates are provided and are slidably connected to the fixed base. The two insert plates are located on both sides of the push plate. The two insert plates are connected by a connecting assembly.

[0010] A pair of support rails are slidably connected to the support frame; an adjustment frame is slidably connected to the support frame, an adjustment cylinder is provided between the adjustment frame and the support frame, and there are mutually cooperating inclined blocks on the adjustment frame and the support rails.

[0011] The push plate is provided with an adjusting pin, and the cylinder body of the pushing cylinder is provided with a spiral groove that cooperates with the adjusting pin; the push plate is provided with fixing bolts, and the support frame is provided with corresponding bolt holes.

[0012] The connecting assembly includes a guide pin and a pull rod. The guide pin is slidably connected to the insert plate, and the insert plate is provided with a corresponding guide groove. The guide groove between the two insert plates is arranged in an X shape. A guide rail is fixed on the fixed base, the pull rod is slidably connected to the guide rail, and the guide pin is fixedly connected to the pull rod.

[0013] The guide rail is provided with a rack, and the end of the pull rod is provided with a positioning element. The positioning element includes a positioning seat and a positioning block. The positioning block is slidably connected to the positioning seat. A spring is provided between the positioning block and the positioning seat. The lower end of the positioning block is provided with teeth that cooperate with the rack.

[0014] The adjusting pin is inserted into or threadedly connected to the push plate.

[0015] One side of the backrest is a flat surface, and the other side is an arc-shaped surface. The backrest is rotatably connected to the support frame. The backrest is equipped with a positioning component.

[0016] The positioning assembly includes a positioning cylinder and a positioning plate. The two ends of the positioning cylinder are fixedly connected to the positioning plate and the backrest, respectively. A positioning shaft is slidably connected to the backrest. The upper end of the positioning shaft is fixedly connected to the positioning plate, and the lower end of the positioning shaft is inserted into the support frame.

[0017] The piston rod of the push cylinder is inserted into the backrest, and the backrest has a corresponding insertion hole. The piston rod of the push cylinder is provided with a connecting groove. A connecting plate is slidably connected to the backrest. The upper end of the connecting plate is fixedly connected to the positioning plate, and the lower end of the connecting plate can extend into the connecting groove.

[0018] A limit ring is fixedly connected to the piston rod of the push cylinder, and a limit plate is provided in the insertion hole.

[0019] The lower end of the support frame is fixedly connected to at least two fixed rails.

[0020] Compared with the prior art, the beneficial effects of this invention are:

[0021] By adjusting the cylinder to drive the adjusting frame, and by using the cooperation between its upper inclined block and the inclined block of the support rail, the distance between a pair of support rails can be adjusted precisely and quickly, thereby changing the height of the pipe support point and adjusting the axis of pipes of different diameters to be consistent with the axis of the machine head.

[0022] The alternating working plate assembly design on both sides of the jacking plate ensures that the jacking force is always borne by the robust jacking plate body, greatly reducing the risk of plate deformation and thus guaranteeing the straightness of the jacking plate movement.

[0023] By adjusting the pin and the spiral groove, the cylinder body of the push cylinder can be driven to rotate, thereby changing the contact area between the insert plate and the slot. This avoids local wear caused by long-term single-point force, balances wear, extends the service life of the cylinder and insert plate assembly, and ensures the synchronicity of the action of the two cylinders.

[0024] The rotatable backrest design, which allows for switching between flat and curved surfaces, enables the device to flexibly adapt to rectangular or circular working pits, enhancing its versatility and installation stability in various construction environments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention in one direction;

[0026] Figure 2 This is a schematic diagram of the structure from another direction of the present invention;

[0027] Figure 3 This is a structural schematic diagram of another aspect of the present invention;

[0028] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a partial cross-sectional view of the present invention;

[0030] Figure 6 This is a schematic diagram of the half-section structure of the present invention;

[0031] Figure 7 yes Figure 6 A magnified view of a section at point B in the middle;

[0032] Wherein: 1 is support frame, 2 is backrest, 20 is flat surface, 21 is arc surface, 22 is insertion hole, 3 is pushing cylinder, 30 is slot, 31 is spiral groove, 32 is connecting groove, 33 is limiting ring, 4 is support plate, 5 is push plate, 6 is through hole, 7 is insertion plate assembly, 70 is fixed seat, 71 is insertion plate, 72 is guide pin, 73 is tie rod, 74 is guide inclined groove, 75 is guide rail, 76 is rack, 77 is positioning component, 770 is positioning seat, 771 is positioning block, 772 is spring, 773 is tooth, 8 is support rail, 9 is adjusting frame, 90 is adjusting cylinder, 10 is inclined block, 11 is adjusting pin, 12 is fixing bolt, 13 is bolt hole, 14 is positioning cylinder, 15 is positioning plate, 16 is positioning shaft, 17 is connecting plate, 18 is limiting plate, and 19 is fixed rail. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1 to 4 As shown, a pipe jacking machine correction device includes a support frame 1, a backrest 2, and a pushing cylinder 3. The backrest 2 is mounted on the support frame 1. Two pushing cylinders 3 are provided, each connected to the support frame 1 via a support plate 4. The piston rod of the pushing cylinder 3 is connected to the backrest 2, and the cylinder body of the pushing cylinder 3 is rotatably connected to the support plate 4. The support plate 4 is slidably connected to the support frame 1. When the piston rod of the pushing cylinder 3 extends, it can drive the cylinder body of the pushing cylinder 3 and the support plate 4 to move along the support frame 1.

[0035] A push plate 5 is connected between the two push cylinders 3, and the push plate 5 is used to push the machine head or pipe forward. The push plate 5 is provided with a through hole 6 that mates with the push cylinder 3 and a plate assembly 7. The cylinder body of the push cylinder 3 is provided with a slot 30 that mates with the plate assembly 7. The push plate 5 is slidably connected to the support frame 1. The through hole 6 is a round hole, and the cylinder body of the push cylinder 3 can move axially and rotate radially relative to the push plate.

[0036] The insert plate assembly 7 includes a fixed base 70 and insert plates 71. The fixed base 70 is fixedly connected to the push plate 5. There are two insert plates 71, both of which are slidably connected to the fixed base 70. The two insert plates 71 are located on both sides of the push plate 5. The two insert plates 71 are connected by a connecting component, which can switch the connection state between the two insert plates 71 and the slot 30.

[0037] When the piston of the push cylinder 3 extends, pushing the cylinder body of the push cylinder 3 and the push plate 5 forward, the insert plate 71 located on the front side of the push plate 5 engages with the slot 30; when the piston of the push cylinder 3 retracts, pulling the cylinder body of the push cylinder 3 and the push plate 5 backward, the insert plate 71 located on the rear side of the push plate 5 engages with the slot 30. When neither insert plate 71 is connected to the push plate 5, the push plate 5 will not move when the cylinder body of the push cylinder moves forward or backward.

[0038] By changing the connection state between the two insert plates 71 and the slot 30, it can be ensured that when the cylinder body of the push cylinder 3 moves forward or backward, the force is mainly borne by the push plate 5, which can effectively reduce the risk of deformation of the insert plates 71 and thus prevent the risk of the push plate 5 moving and deviating due to the deformation of the insert plates 71.

[0039] A pair of support rails 8 are slidably connected to the support frame 1, and the support rails 8 are used to support the machine head or pipe. When the push plate 5 moves forward, it pushes the machine head or pipe on the support rails 8 forward. However, due to the different diameters of the pipes, the axis of the pipe and the axis of the machine head are not aligned after being placed on the support rails 8. Therefore, an adjusting frame 9 is slidably connected to the support frame 1, and an adjusting cylinder 90 is provided between the adjusting frame 9 and the support frame 1. Both the adjusting frame 9 and the support rails 8 are provided with mutually cooperating inclined blocks 10. The two ends of the adjusting cylinder 90 are fixedly connected to the adjusting frame 9 and the support frame 1, respectively.

[0040] After the pipe is placed on the support rail 8, the piston rod of the adjusting cylinder 90 extends and retracts, causing the adjusting frame 9 to move forward or backward. The contact part between the inclined block 10 on the adjusting frame 9 and the inclined block 10 on the support rail 8 changes, causing the distance between the support rails 8 to change, so that the pipe on it moves up or down to correct its deviation, so as to ensure that the axis of the pipe and the machine head are on the same straight line.

[0041] The jacking plate 5 is equipped with an adjusting pin 11, and the cylinder body of the pushing cylinder 3 is equipped with a spiral groove 31 that mates with the adjusting pin 11; the jacking plate 5 is equipped with a fixing bolt 12, and the support frame 1 is equipped with several corresponding bolt holes 13. During normal pipe jacking operations, the adjusting pin 11 is not connected to the spiral groove 31, and the fixing bolt 12 is not connected to the bolt holes 13.

[0042] First, the connection assembly can be used to switch the state so that neither of the two insert plates 71 is connected to the slot 30; then the fixing bolt 12 on the push plate 5 is connected to the bolt hole 13 on the support frame 1, at which point the position of the push plate 5 is fixed; then the adjusting pin 11 is inserted into the spiral groove 31; finally, the cylinder body of the push cylinder is moved and rotated by extending or shortening the piston rod of the push cylinder 3.

[0043] By setting the aforementioned adjusting pin 11 and spiral groove 31, the cylinder body of the push cylinder 3 can be rotated, thereby changing the contact area between the insertion / removal and the slot 30, avoiding local deformation caused by long-term use, and preventing inconsistent movement of the two push cylinder bodies 3.

[0044] Furthermore, such as Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, the connecting assembly includes a guide pin 72 and a pull rod 73. The guide pin 72 is slidably connected to the insert plate 71. The insert plate 71 is provided with a corresponding guide groove 74. The guide groove 74 between the two insert plates 71 is arranged in an X shape. A guide rail 75 is fixed on the fixed seat 70. The pull rod 73 passes through the fixed seat 70 and is slidably connected to the guide rail 75. The guide pin 72 is fixedly connected to the pull rod 73.

[0045] When the lever 73 is pulled outward or pushed inward, the guide pin 72 moves accordingly. Through the cooperation of the guide pin 72 and the guide groove 74, the two insert plates 71 move up and down. Specifically: when the lever 73 is pulled outward, the front insert plate 71 moves upward and the rear insert plate 71 moves downward to engage with the slot 30; conversely, when the lever 73 is pushed inward, the front insert plate 71 moves downward to engage with the slot 30, and the rear insert plate 71 moves upward. When the guide pin 72 moves to the middle position of the guide groove 74, the two insert plates 71 are not engaged with the slot 30.

[0046] Furthermore, such as Figure 6 and Figure 7 As shown, a rack 76 is provided on the guide rail 75, and a positioning element 77 is provided at the end of the pull rod 73. Resistance is applied by the positioning element 77 to prevent the pull rod 73 from moving arbitrarily. The positioning element 77 includes a positioning seat 770 and a positioning block 771. The positioning block 771 is slidably connected to the positioning seat 770, and a spring 772 is provided between the positioning block 771 and the positioning seat 770. Both ends of the spring 772 are fixedly connected to the positioning block 771 and the positioning seat 770, respectively. The lower end of the positioning block 771 has teeth 773 that engage with the rack 76. The teeth 773 can engage between two adjacent teeth of the rack 76. When the pull rod 73 moves inward or outward, it needs to overcome the resistance of the spring 772 and the resistance between the teeth 773 and the rack 76; when the external force is removed, the teeth 773 are located between two adjacent teeth of the rack 76, thus preventing the pull rod 73 from moving arbitrarily.

[0047] Furthermore, such as Figure 4 As shown, the adjusting pin 11 is plugged into or threadedly connected to the push plate 5. When it is necessary to connect the adjusting pin 11 to the spiral groove 31, the adjusting pin 11 can be pushed or rotated to move it and extend into the spiral groove 31.

[0048] Furthermore, such as Figure 1 , Figure 3 and Figure 5 As shown, one side of the backrest 2 is a flat surface 20, and the other side is an arc-shaped surface 21. The backrest 2 is rotatably connected to the support frame 1. A positioning component is provided on the backrest 2. The position of the backrest 2 can be adjusted according to the shape of the working pit (rectangular or circular). When the working pit is rectangular, the backrest 2 is rotated so that its flat surface 20 faces outwards, and then the position of the backrest 2 is fixed by the positioning component. When the working pit is circular, the backrest 2 is rotated so that its arc-shaped surface 21 faces outwards, and then the position of the backrest 2 is fixed by the positioning component. The rotation of the backrest 2 can be driven manually or mechanically. With the above structural design, the backrest 2 can adapt to rectangular or circular working pits.

[0049] It should be noted that before adjustment, the piston rod of the push cylinder needs to be separated from the backrest 2 and retracted to ensure that the backrest 2 has sufficient rotation space.

[0050] Furthermore, such as Figure 1 and Figure 5 As shown, the positioning assembly includes a positioning cylinder 14 and a positioning plate 15. The two ends of the positioning cylinder 14 are fixedly connected to the positioning plate 15 and the backrest 2, respectively. A positioning shaft 16 is slidably connected to the backrest 2. The upper end of the positioning shaft 16 is fixedly connected to the positioning plate 15, and the lower end of the positioning shaft 16 is inserted into the support frame 1.

[0051] When the piston rod of the positioning cylinder 14 extends, it will drive the positioning plate 15 and the positioning shaft 16 to move upward, so that the lower end of the positioning shaft 16 is separated from the support frame 1. Then, the position of the backrest 2 can be changed according to the shape of the working pit. After adjustment, the piston rod of the positioning cylinder 14 retracts, driving the positioning plate 15 and the positioning shaft 16 to move downward, so that the lower end of the positioning shaft 16 is inserted into the support frame 1, thereby fixing the position of the backrest 2.

[0052] Furthermore, such as Figure 5 As shown, the piston rod of the push cylinder 3 is inserted into the backrest 2, and the backrest 2 has a corresponding insertion hole 22. The piston rod of the push cylinder 3 is provided with a connecting groove 32. A connecting plate 17 is slidably connected to the backrest 2. The upper end of the connecting plate 17 is fixedly connected to the positioning plate 15, and the lower end of the connecting plate 17 can extend into the connecting groove 32.

[0053] When the piston rod of the positioning cylinder 14 extends, it will drive the positioning plate 15 and the connecting plate 17 to move upward, causing the connecting plate 17 to move out of the connecting groove 32; the piston rod of the pushing cylinder 3 retracts, realizing the separation between the piston rod of the pushing cylinder 3 and the insertion hole 22; at this time, the position of the backrest 2 can be changed as needed. After the position of the backrest 2 is adjusted, the piston rod of the pushing cylinder 3 extends and inserts into the insertion hole 22, the piston rod of the positioning cylinder retracts, causing the connecting plate 17 to extend into the connecting groove 32, fixing the piston rod of the pushing cylinder 3.

[0054] Furthermore, such as Figure 1 and Figure 5 As shown, a limiting ring 33 is fixedly connected to the piston rod of the pushing cylinder 3, and a limiting plate 18 is provided in the insertion hole 22; after the limiting ring 33 abuts against the limiting plate 18, the connecting plate 17 is aligned with the connecting groove 32, ensuring that the piston rod of the positioning cylinder retracts, allowing the connecting plate 17 to extend into the connecting groove 32.

[0055] Furthermore, such as Figure 1 As shown, at least two fixed rails 19 are fixedly connected to the lower end of the support frame 1 to enhance the stability of the support frame 1 and distribute the pressure it bears.

[0056] The above description only illustrates preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A pipe jacking machine correction device, characterized in that: It includes a support frame (1), a backrest (2), and a push cylinder (3). The backrest (2) is mounted on the support frame (1). There are two push cylinders (3). The two push cylinders (3) are connected to the support frame (1) through a support plate (4). The piston rod of the push cylinder (3) is connected to the backrest (2). The cylinder body of the push cylinder (3) is rotatably connected to the support plate (4). The support plate (4) is slidably connected to the support frame (1). A push plate (5) is connected between the two push cylinders (3). The push plate (5) is provided with a through hole (6) that cooperates with the push cylinder (3) and a plate assembly (7). The cylinder body of the push cylinder (3) is provided with a slot (30) that cooperates with the plate assembly (7). The push plate (5) is slidably connected to the support frame (1). The insert plate assembly (7) includes a fixed base (70) and insert plates (71). The fixed base (70) is fixedly connected to the push plate (5). There are two insert plates (71) and both are slidably connected to the fixed base (70). The two insert plates (71) are located on both sides of the push plate (5). The two insert plates (71) are connected by a connecting assembly. A pair of support rails (8) are slidably connected to the support frame (1); an adjustment frame (9) is slidably connected to the support frame (1), and an adjustment cylinder (90) is provided between the adjustment frame (9) and the support frame (1). Both the adjustment frame (9) and the support rails (8) are provided with mutually cooperating inclined blocks (10). The push plate (5) is provided with an adjusting pin (11), and the cylinder body of the push cylinder (3) is provided with a spiral groove (31) that cooperates with the adjusting pin (11); the push plate (5) is provided with a fixing bolt (12), and the support frame (1) is provided with a corresponding bolt hole (13). The connecting assembly includes a guide pin (72) and a pull rod (73). The guide pin (72) is slidably connected to the insert plate (71). The insert plate (71) is provided with a corresponding guide groove (74). The guide groove (74) between the two insert plates (71) is arranged in an X shape. A guide rail (75) is fixed on the fixed seat (70). The pull rod (73) is slidably connected to the guide rail (75). The guide pin (72) is fixedly connected to the pull rod (73). The guide rail (75) is provided with a rack (76), and the end of the pull rod (73) is provided with a positioning element (77). The positioning element (77) includes a positioning seat (770) and a positioning block (771). The positioning block (771) is slidably connected to the positioning seat (770). A spring (772) is provided between the positioning block (771) and the positioning seat (770). The lower end of the positioning block (771) is provided with teeth (773) that cooperate with the rack (76).

2. The pipe jacking machine correction device according to claim 1, characterized in that: The adjusting pin (11) is plugged into or threaded into the push plate (5).

3. The pipe jacking machine correction device according to claim 1, characterized in that: One side of the backrest (2) is a flat surface (20), and the other side is an arc-shaped surface (21). The backrest (2) is rotatably connected to the support frame (1). The backrest (2) is provided with a positioning component.

4. The pipe jacking machine correction device according to claim 3, characterized in that: The positioning assembly includes a positioning cylinder (14) and a positioning plate (15). The two ends of the positioning cylinder (14) are fixedly connected to the positioning plate (15) and the backrest (2) respectively. A positioning shaft (16) is slidably connected on the backrest (2). The upper end of the positioning shaft (16) is fixedly connected to the positioning plate (15), and the lower end of the positioning shaft (16) is inserted into the support frame (1).

5. The pipe jacking machine correction device according to claim 4, characterized in that: The piston rod of the push cylinder (3) is inserted into the backrest (2), and the backrest (2) has a corresponding insertion hole (22). The piston rod of the push cylinder (3) is provided with a connecting groove (32). A connecting plate (17) is slidably connected to the backrest (2). The upper end of the connecting plate (17) is fixedly connected to the positioning plate (15), and the lower end of the connecting plate (17) can extend into the connecting groove (32).

6. The pipe jacking machine correction device according to claim 5, characterized in that: A limit ring (33) is fixedly connected to the piston rod of the push cylinder (3), and a limit plate (18) is provided in the insertion hole (22).

7. The pipe jacking machine correction device according to claim 1, characterized in that: The lower end of the support frame (1) is fixedly connected to at least two fixed rails (19).

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