Automatic deviation rectifying mechanism for slurry balance tube push bench

Abstract

The invention discloses an automatic deviation rectifying mechanism for a slurry balance pipe jacking machine, relates to the technical field of slurry balance pipe jacking machines, and solves the problems that an existing small pipe jacking machine possibly deflects upwards, downwards or leftwards and rightwards during operation, so that the pipe jacking machine deviates from an original advancing track when deviating, and the working efficiency of the pipe jacking machine is improved. The technical problems that the operation range of a soil layer is deviated, the working efficiency of pipe jacking operation is reduced, and meanwhile large potential safety hazards exist are solved. Comprising a pushing seat arranged at the end of a pipe jacking machine body; the deviation rectifying mechanism comprises an adjusting sleeve piece arranged on the pipe jacking machine body in a sleeving manner and a group of micro air cylinders arranged on the pushing seat; the adjusting external member comprises a head section cylinder body and a triangular adjusting plate which are sleeved on the machine body; the pipe jacking machine can be conveniently adjusted and rectified, secondary adjustment is not needed, the adjustment accuracy is improved, the adjustment procedure is simplified, and the overall working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mud-water balanced pipe jacking machines, and in particular relates to an automatic deviation correcting mechanism for mud-water balanced pipe jacking machines. Background Art

[0002] The mud-water balanced pipe jacking machine is a mechanical automatic pipe jacking construction method that uses full-section soil cutting, uses mud-water pressure to balance soil pressure and groundwater pressure, and uses mud-water as a medium for transporting spoil. The advantages of this method include a wide range of applicable geology, can effectively maintain the stability of the excavation surface, and has relatively little disturbance to the soil around the jacked pipe, causing relatively little ground settlement. In addition, the working environment in the working pit is better and the operation is safer, because it uses mud-water to transport spoil, and there is no more dangerous operations such as moving earth and lifting soil.

[0003] At present, some small pipe jacking machines on the market work mainly by having the cutter head set at the front exert force on the soil layer during operation.

[0004] However, due to the lack of automatic deviation correction mechanism, when encountering a harder area in the soil layer, the mud-water balance pipe jacking machine may deflect upward, downward, or left and right, which causes the pipe jacking machine to deviate from its original trajectory when it deviates, resulting in a deviation in the working range of the soil layer, which not only reduces the efficiency of the pipe jacking operation but also poses a greater safety hazard, thereby reducing the practicality of the device. Therefore, based on the above problems, an automatic deviation correction mechanism for a mud-water balance pipe jacking machine is proposed. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an automatic deviation correction mechanism for a mud-water balanced pipe jacking machine, which solves the problem that the existing small-sized pipe jacking machine may deflect upward, downward or left and right during operation, which causes the pipe jacking machine to deviate from its original travel trajectory when it deviates, resulting in a deviation in the operating range of the soil layer, reducing the working efficiency of the pipe jacking operation and also posing a greater safety hazard.

[0006] To achieve the above-mentioned object, an embodiment according to a first aspect of the present invention provides an automatic deviation correction mechanism for a mud-water balanced pipe jacking machine, comprising a pushing seat, which is arranged at the end of the pipe jacking machine body;

[0007] Also includes:

[0008] A deviation correction mechanism, the deviation correction mechanism comprising an adjustment kit sleeved on the pipe jacking machine body and a group of micro cylinders arranged on the pushing seat;

[0009] The adjustment kit includes a head section cylinder and a triangular adjustment plate which are sleeved on the machine body. The triangular adjustment plate is connected to the side of the head section cylinder. A group of micro cylinders is provided with three micro cylinders, and each micro cylinder is rotatably connected to each corner end of the triangular adjustment plate.

[0010] A further improvement is that the pipe jacking machine body includes a body connected to the end of the pushing seat and a cutter head arranged at the end of the body.

[0011] A further improvement is that the correction mechanism also includes a synchronous pressure rod arranged at each corner end of the triangular adjustment plate, the head section cylinder is provided with a ring seat on the side away from the triangular adjustment plate, three cylinder bodies are arranged on the ring seat, each of the cylinder bodies is provided with a pushing piston, each pushing piston is provided with a pressure wheel frame on one side of the machine body, a pressure wheel is arranged in the port of each pressure wheel frame, a lower pressure block connected to the pushing piston is slidably arranged in the top port of each cylinder body, and the other end of each synchronous pressure rod is arranged on the top surface of the lower pressure block.

[0012] A further improvement is that the machine body is provided with an annular retaining groove on one side of the cutter head.

[0013] A further improvement is that each of the pressing wheels is arranged in an annular locking groove.

[0014] A further improvement is that the upper half of the top surface of each of the lower pressing blocks in the initial state is located on the top surface of the cylinder body.

[0015] A further improvement is that the correction mechanism also includes three groups of spring buffer devices, each group of the spring buffer devices includes a mounting column connected to each corner end of the triangular adjustment plate, a sleeve sleeved on each mounting column, a compression spring 1 connected between each sleeve and the end of the triangular adjustment plate and movably sleeved on the mounting column, a ring connected to each cylinder body and a compression spring 2 connected between each ring and the lower pressure block and movably sleeved on the pushing piston rod body.

[0016] A further improvement is that a support is provided at each corner end of the back side of the triangular adjustment plate, and the rod end of each micro cylinder is rotatably connected to each corner end of the triangular adjustment plate through a rotating shaft.

[0017] A further improvement is that mounting ears are provided on the top surface of the lower pressing block and the side surface of the sleeve, and both ends of each synchronous pressing rod are rotatably arranged in the mounting ears through a rotating shaft.

[0018] A further improvement is that each of the cylinders is equidistantly distributed on the ring seat and corresponds to each corner end of each triangular adjustment plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The control room personnel of the present invention monitors the data transmitted by the various orientation sensors. Once they find that the head of the pipe jacking machine is deflected upward, they will start the micro cylinder in the corresponding orientation. This micro cylinder will push one end of the triangular adjustment plate to adjust the position of the end of the head of the pipe jacking machine to ensure that it is in the correct state. For offsets in other directions, the same operating steps will be taken for adjustment. The adjustment kit consists of a head section cylinder and a triangular adjustment plate. When the triangular adjustment plate swings, the synchronous pressure rod on the back of the plate will push the push piston in each cylinder. This action will drive the pressure wheel frame and the pressure wheel to apply pressure downward together, thereby achieving synchronous fine-tuning of the end of the pipe jacking machine's cutter head. This design does not require secondary adjustment, which not only improves the accuracy of the adjustment, but also simplifies the adjustment process and improves the overall work efficiency. It is particularly suitable for the adjustment and deviation correction work of long pipe jacking machines.

[0021] In order to reduce the impact and vibration of the pipe jacking machine during the deviation correction process, the present invention also specially designs a spring buffer device. This device can protect the pipe jacking machine and the cylinder from damage to a certain extent, and extend the service life of the pipe jacking machine. At the same time, the elastic force of the spring can also help the cylinder to achieve more accurate positioning during the deviation correction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the deviation-correcting mechanism, the pushing seat and the main body of the pipe jacking machine of the present invention;

[0023] Figure 2 It is a schematic diagram of the longitudinal section structure of the deviation correction mechanism, the pushing seat and the main body of the pipe jacking machine of the present invention;

[0024] Figure 3 The present invention Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 It is a schematic diagram of the structure of the adjustment kit of the present invention at a side close to the push seat;

[0026] Figure 5 It is a schematic diagram of the side sectional structure of the engine body, the ring seat and the three cylinder bodies of the present invention.

[0027] Markings in the figure:

[0028] 1. Push seat; 2. Correction mechanism; 21. Micro cylinder; 22. Adjustment kit; 221. Head section cylinder; 222. Triangular adjustment plate; 23. Synchronous pressure rod; 24. Spring buffer device; 241. Mounting column; 242. Sleeve; 243. Compression spring 1; 244. Mounting ring; 245. Compression spring 2; 25. Cylinder body; 251. Push piston; 252. Pressure wheel frame; 253. Pressure wheel; 254. Lower pressure block; 26. Ring seat; 27. Support; 3. Pipe jacking machine body; 31. Machine body; 32. Cutter head; 301. Annular positioning groove; 302. Recess. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 5 As shown, an automatic deviation correction mechanism for a mud-water balanced pipe jacking machine includes a push seat 1, which is arranged at the end of a pipe jacking machine body 3. The pipe jacking machine body 3 includes a body 31 connected to the end of the push seat 1 and a cutter head 32 arranged at the end of the body 31;

[0031] The deviation-correcting mechanism 2 includes an adjustment kit 22 sleeved on the machine body 31 and a group of micro cylinders 21 arranged on the push seat 1, and the micro cylinders 21 are used to provide driving force;

[0032] The adjustment kit 22 includes a head section cylinder 221 and a triangular adjustment plate 222 sleeved on the machine body 31. The triangular adjustment plate 222 is connected to the side of the head section cylinder 221. The triangular adjustment plate 222 is a triangular plate. The number of a group of micro cylinders 21 is set to three. The rod body of each micro cylinder 21 is rotatably connected to the back of the triangular adjustment plate 222 through a rotating shaft, and can adjust and correct the deviation of the pipe jacking machine in different directions respectively.

[0033] The deviation correction mechanism 2 also includes a synchronous pressure rod 23 arranged at each corner end of the triangular adjustment plate 222, a ring seat 26 is provided on the side of the head section cylinder 221 away from the triangular adjustment plate 222, and three cylinders 25 are provided on the ring seat 26, each cylinder 25 is provided with a push piston 251, each push piston 251 is provided with a pressure wheel frame 252 on one side of the body 31, and a pressure wheel 253 is provided in the port of each pressure wheel frame 252, and a sliding and Push the lower pressing block 254 connected to the piston 251, and the other end of each synchronous pressing rod 23 is arranged on the top surface of the lower pressing block 254. The upper half of the top surface of each lower pressing block 254 is located on the top surface of the cylinder body 25 in the initial state. The ring seat 26 and the head section cylinder 221 are provided with grooves 302 for the pressure wheel frame 252 and the pressure wheel 253 to enter and exit at the position corresponding to each cylinder body 25. During implementation, the three displacement sensors arranged in the main body 3 of the pipe jacking machine are used to monitor the data transmitted by the sensors in each direction respectively. Once it is found that the head of the pipe jacking machine is deflected upward, the control room personnel will start the micro cylinder 21 in the corresponding direction according to the transmitted data. The micro cylinder 21 will push one end of the triangular adjustment plate 222, thereby adjusting the position of the end of the head of the pipe jacking machine to ensure that it is in the correct state. For the deviation in other directions, the same operation steps will be taken for adjustment;

[0034] Specifically, as a preferred implementation scheme, a support 27 is provided at each corner end of the back side of the triangular adjustment plate 222, and the rod end of each micro cylinder 21 is rotatably connected to the support 27 at each corner end of the triangular adjustment plate 222 through a rotating shaft, and mounting ears are provided on the top surface of the lower pressure block 254 and the side of the sleeve 242. The two ends of each synchronous pressure rod 23 are respectively rotatably set in the mounting ears 28 through a rotating shaft. When the triangular adjustment plate 222 swings, the synchronous pressure rod 23 on its back side will push the pushing piston 251 in each cylinder body 25. This action will drive the pressure wheel frame 252 and the pressure wheel 253 to apply pressure downward together, thereby realizing synchronous fine-tuning of the end of the pipe jacking machine's cutter head 32. This design does not require secondary adjustment, which not only improves the accuracy of the adjustment, but also simplifies the adjustment process and improves the overall work efficiency. It is particularly suitable for the adjustment and deviation correction work of long pipe jacking machines;

[0035] Specifically, as a preferred embodiment, the body 31 is provided with an annular positioning groove 301 on one side of the cutter head 32. After installation, each pressing wheel 253 is arranged in the annular positioning groove 301 to achieve positioning, so that the pressing wheel 253 can maintain the stability of pressing down during the synchronous fine adjustment process of pressing down to prevent deviation.

[0036] like Figure 2 , Figure 3 and Figure 5 As shown, this embodiment also provides an implementation scheme, which is as follows:

[0037] The deviation correction mechanism 2 also includes three groups of spring buffer devices 24, each group of spring buffer devices 24 includes a mounting column 241 connected to each corner end of the triangular adjustment plate 222, a sleeve 242 sleeved on each mounting column 241, a compression spring 1 243 connected between each sleeve 242 and the end of the triangular adjustment plate 222 and movably sleeved on the mounting column 241, a ring 244 connected to each cylinder body 25, and a compression spring 245 connected between each ring 244 and the lower pressing block 254 and movably sleeved on the rod body of the pushing piston 251. The spring buffer device 24 is designed. This device can protect the pipe jacking machine and the cylinder from damage to a certain extent and extend the service life of the pipe jacking machine. At the same time, the elastic force of the spring can also help the cylinder to achieve more accurate positioning during the deviation correction process.

[0038] like Figures 1 to 5As shown, in this embodiment, it is also necessary to explain that the main body 3 of the pipe jacking machine in the application document is a small pipe jacking machine, and three displacement sensors are arranged in the main body 3 of the pipe jacking machine. The three displacement sensors are arranged corresponding to each corner end of the triangular adjustment plate 222, and the displacement changes of the pipe jacking machine in the jacking process are monitored in real time through the displacement sensors in each orientation. When the displacement sensor detects that the machine head is offset, it transmits an alarm to the control room so that the construction personnel can take corrective measures in time. It is a commercially available product of the prior art, and its working principle has been disclosed. The specific model is selected and installed according to the actual needs on site; the actual shape and size of each component in this application document are selected and installed before implementation according to the actual needs on site.

[0039] In addition, it should be noted that this application document only aims at improving the shortcomings of some existing small-scale pipe jacking machines due to the lack of automatic deviation correction mechanism. When encountering a harder area in the soil layer, the mud-water balance pipe jacking machine may deflect upward, downward or left and right. This causes the pipe jacking machine to deviate from its original travel trajectory when it deviates, resulting in a deviation in the working range of the soil layer, which not only reduces the working efficiency of the pipe jacking operation but also poses a greater safety hazard, thereby reducing the practicality of the device. It does not involve other aspects; the following is an introduction to the working principle of the automatic deviation correction mechanism for the mud-water balance pipe jacking machine:

[0040] When the scheme of the present invention is used, the displacement change of the pipe jacking machine during the jacking process is monitored in real time based on the displacement sensor built into the pipe jacking machine. When the displacement sensor detects that the machine head is offset, it transmits an alarm to the control room. Subsequently, the control room personnel monitor according to the data transmitted by the various orientation sensors. Once they find that the machine head of the pipe jacking machine is offset upward, they will start the micro cylinder 21 in the corresponding orientation. The above is the prior art, and the present application is implemented based on the above technology.

[0041] Subsequently, the micro cylinder 21 pushes one end of the triangular adjustment plate 222 to adjust the position of the end of the pipe jacking machine head to ensure that it is in the correct state. For the offset in other directions, the same operation steps will be taken to adjust.

[0042] The adjustment kit 22 is composed of a head section cylinder 221 and a triangular adjustment plate 222. When the triangular adjustment plate 222 swings, the synchronous pressure rod 23 on the back thereof pushes the push piston 251 in each cylinder 25. This action drives the pressure wheel frame 252 and the pressure wheel 253 to apply pressure downward, thereby achieving synchronous fine adjustment of the end of the pipe jacking machine cutter head 32. This design does not require secondary adjustment, which not only improves the accuracy of the adjustment, but also simplifies the adjustment process and improves the overall work efficiency. It is particularly suitable for the adjustment and correction of long pipe jacking machines.

[0043] In addition, in order to reduce the impact and vibration of the pipe jacking machine during the correction process, we have also specially designed a spring buffer device 24. This device can protect the pipe jacking machine and the cylinder from damage to a certain extent and extend the service life of the pipe jacking machine. At the same time, the elastic force of the spring can also help the cylinder to achieve more accurate positioning during the correction process.

[0044] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An automatic deviation correction mechanism for a mud-water balanced pipe jacking machine, comprising a push seat (1) arranged at the end of a pipe jacking machine body (3); in, A set of displacement sensors is arranged in the main body (3) of the pipe jacking machine, and the displacement changes of the pipe jacking machine during the jacking process are monitored in real time by the displacement sensors. When the displacement sensor detects that the machine head is deviated, an alarm is transmitted to the control room to send out an alarm so that the construction personnel can take corrective measures in time; It is characterized by further comprising: A deviation correction mechanism (2), the deviation correction mechanism (2) comprising an adjustment kit (22) sleeved on the pipe jacking machine body (3) and a group of micro cylinders (21) arranged on the pushing seat (1); The adjustment kit (22) comprises a head section cylinder (221) sleeved on the machine body (31) and a triangular adjustment plate (222), wherein the triangular adjustment plate (222) is connected to the side of the head section cylinder (221), and a group of the micro cylinders (21) is provided with three in number, and each micro cylinder (21) is rotatably connected to each corner end of the triangular adjustment plate (222).

2. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 1 is characterized in that: The pipe jacking machine body (3) comprises a machine body (31) connected to the end of the pushing seat (1) and a cutter head (32) arranged at the end of the machine body (31).

3. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 1 is characterized in that: The deviation correction mechanism (2) also includes a synchronous pressure rod (23) arranged at each corner end of the triangular adjustment plate (222); the head section cylinder (221) is provided with a ring seat (26) on the side away from the triangular adjustment plate (222); three cylinder bodies (25) are arranged on the ring seat (26); each cylinder body (25) is provided with a pushing piston (251); each pushing piston (251) is provided with a pressure wheel frame (252) on the side located on the machine body (31); a pressure wheel (253) is arranged in the port of each pressure wheel frame (252); a lower pressure block (254) connected to the pushing piston (251) is slidably arranged in the top end port of each cylinder body (25); and the other end of each synchronous pressure rod (23) is arranged on the top surface of the lower pressure block (254).

4. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 3 is characterized in that: The machine body (31) is provided with an annular locking groove (301) on one side of the cutter head (32).

5. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 3 is characterized in that: Each of the pressing wheels (253) is arranged in an annular locking groove (301).

6. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 3 is characterized in that: In the initial state, the upper half of the top surface of each of the lower pressing blocks (254) is located on the top surface of the cylinder body (25).

7. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 3 is characterized in that: The deviation correction mechanism (2) also includes three groups of spring buffer devices (24), each group of the spring buffer devices (24) includes a mounting column (241) connected to each corner end of the triangular adjustment plate (222), a sleeve (242) sleeved on each mounting column (241), a compression spring (243) connected between each sleeve (242) and the end of the triangular adjustment plate (222) and movably sleeved on the mounting column (241), a collar (244) connected in each cylinder body (25), and a compression spring (245) connected between each collar (244) and the lower pressing block (254) and movably sleeved on the rod body of the pushing piston (251).

8. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 1 is characterized in that: A support (27) is provided at each corner end of the back side of the triangular adjustment plate (222), and the rod end of each micro cylinder (21) is rotatably connected to the support (27) at each corner end of the triangular adjustment plate (222) via a rotating shaft.

9. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 7 is characterized in that: The top surface of the lower pressing block (254) and the side surface of the sleeve (242) are provided with mounting ears (28), and the two ends of each synchronous pressing rod (23) are respectively rotatably arranged in the mounting ears (28) through a rotating shaft.

10. The automatic deviation correction mechanism for a mud-water balanced pipe jacking machine according to claim 3, characterized in that: Each of the cylinder bodies (25) is equidistantly distributed on the ring seat (26) and corresponds to each corner end of each triangular adjustment plate (222).

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