Large-section long-distance pipe jacking construction device

Abstract

The invention belongs to the technical field of pipe jacking machines, and particularly relates to a large-section long-distance pipe jacking construction device which comprises a propelling machine base. A servo motor is fixedly connected to one side of the outer wall of the propelling machine base. A double-threaded rod is rotationally connected to the position, close to the servo motor, of the inner wall of the propelling machine base, one end of the double-threaded rod is fixedly connected to the output end of the servo motor, and two opposite threads are arranged on the two sides of the double-threaded rod; the distance between the two limiting plates is adjusted through rotation of the two limiting plates along with the double-threaded rod, adaptive pipe jacking construction can be conducted on pipelines with different diameters, the output end of a first hydraulic cylinder is used for pushing a pushing plate to slide, the pushing plate synchronously pushes the pipelines into a soil layer, the effect of pushing the large-section pipelines is achieved, and the construction efficiency is improved. The two guide blocks are matched with the guide grooves to guide the pipeline, the pipeline is conveniently guided and hoisted to the pushing position, the long vertical plate is driven by the output end of the second hydraulic cylinder to push the pipeline to cross the limiting plates, and the follow-up pipeline is conveniently hoisted and placed between the two limiting plates.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe jacking machines, in particular to a large-section and long-distance pipe jacking construction device. Background Art

[0002] A pipe jacking machine is a construction machine used for pipe jacking construction of underground pipelines. The main structure of the pipe jacking machine is composed of four major mechanisms, which are divided into the main mechanism, the propulsion mechanism, the support mechanism and the jacking mechanism.

[0003] A patent application with publication number CN114439486A discloses a micro pipe jacking machine, including a base, on which two track plates are fixedly mounted, one end of each track plate is fixedly connected to an end block, and a bracket is slidably connected to the two track plates. This application can adjust the height of the four corners through the set height adjustment component, thereby reducing the error caused by the uneven bottom of the construction shaft.

[0004] During pipe jacking construction, a cylinder is generally used to push the drill rod for excavation. The above-mentioned pipe jacking construction device mainly reduces the error caused by the uneven bottom of the building well during pipe jacking construction by adjusting the height of multiple angles. However, when pushing the pipeline, the propulsion mechanism of the pipe jacking machine is usually used to push a single type of pipeline. Depending on the project, the propulsion mechanism needs to push different pipelines for laying. However, the propulsion mechanism of the current pipe jacking machine is difficult to apply to different pipelines. If it is found that the propulsion mechanism cannot correspond to the pipeline model after it is built, a new propulsion mechanism needs to be rebuilt, which can easily affect the progress of the pipe jacking construction.

[0005] To this end, the present invention provides a large-section and long-distance pipe jacking construction device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the large-section and long-distance jacking construction device described in the present invention includes a propulsion machine base; a servo motor is fixedly connected to one side of the outer wall of the propulsion machine base; a double-threaded rod is rotatably connected to the inner wall of the propulsion machine base and close to the servo motor, and one end of the double-threaded rod is fixed to the output end of the servo motor, and two opposite threads are provided on both sides of the double-threaded rod; both sides of the end of the servo motor are slidably connected to limit plates, and the two limit plates are connected to the double-threaded rod through a screw nut pair; a pushing assembly is provided at the end of the propulsion machine base, and the pushing assembly can cooperate with the two limit plates to push the pipeline assembly.

[0008] Preferably, the pushing assembly includes a No. 1 hydraulic cylinder and a pushing plate; the No. 1 hydraulic cylinder is fixedly connected to the side of the end of the propulsion base away from the servo motor; the pushing plate is fixedly connected to the output end of the No. 1 hydraulic cylinder, and the bottom of the pushing plate is attached to the upper end surface of the propulsion base.

[0009] Preferably, a guide groove is provided at the top of the pushing plate; and guide blocks are fixedly connected to the tops of the two limiting plates.

[0010] Preferably, a No. 2 hydraulic cylinder is fixedly connected to the middle portion of the inner wall of the pushing plate; and a long vertical plate is fixedly connected to the output end of the No. 2 hydraulic cylinder.

[0011] Preferably, a plurality of No. 1 elastic members are fixedly connected to the central end of the propulsion machine seat; and a support plate is fixedly connected to the end of the No. 1 elastic member.

[0012] Preferably, the inner walls of the ends of the propulsion machine seat and the support plate are fixed with fixed rods; a plurality of the fixed rods are rotatably connected to sliding wheels; a through groove is provided at the bottom middle end of the pushing plate, and the through groove is arranged corresponding to the sliding wheel.

[0013] Preferably, a shovel plate is fixedly connected to the bottom of the push plate on one side away from the limiting plate; and two opposite guide grooves are provided at the end of the propulsion machine seat near the shovel plate.

[0014] Preferably, an extrusion cavity is opened inside the plurality of limit plates; a No. 1 connecting pipe is fixedly connected to the interior of the limit plate, and the No. 1 connecting pipe is communicated with the extrusion cavity; a No. 2 connecting pipe is fixedly connected to the interior of the limit plate near the No. 1 connecting pipe, and the No. 2 connecting pipe is communicated with the extrusion cavity; a plurality of atomizing nozzles are fixedly connected to the outer wall of the inclined surface of the guide block, and the plurality of atomizing nozzles are communicated with the No. 2 connecting pipe; an extrusion assembly is provided inside the limit plate, and the extrusion assembly is used to push the water inside the extrusion cavity to the plurality of atomizing nozzles for spraying.

[0015] Preferably, the extrusion assembly includes an extrusion plate and a second elastic member; the extrusion plate is slidably connected to the inner wall of the extrusion cavity; and the second elastic member is fixed between the extrusion plate and the inner wall of the limiting plate.

[0016] Preferably, a one-way valve is fixedly connected to the interior of the No. 1 connecting pipe; the one-way valve is used to allow the water transported in the No. 1 connecting pipe to flow underwater into the extrusion chamber.

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

[0018] 1. The large-section and long-distance jacking construction device described in the present invention can adjust the distance between the two limit plates as the double-threaded rod rotates, so as to adapt to the jacking construction of pipelines with different diameters. The output end of the No. 1 hydraulic cylinder is used to push the pushing plate to slide, and the pushing plate synchronously pushes the pipeline into the soil layer, thereby pushing the large-section pipeline. The two guide blocks cooperate with the guide groove to guide the pipeline hoisting, which is convenient for the pipeline to be guided and hoisted to the pushing position. The output end of the No. 2 hydraulic cylinder is used to drive the long vertical plate to continue to push the pipeline over the limit plate, which is convenient for the subsequent pipeline hoisting and placement between the two limit plates. The pipeline can be auxiliary supported by relying on multiple No. 1 elastic members in combination with the support plate, which is convenient for lowering the pipeline hoisting auxiliary support.

[0019] 2. The large-section and long-distance pipe jacking construction device described in the present invention is characterized by multiple sliding wheels respectively located below the middle of the pipeline. The multiple sliding wheels roll during the pipeline pushing process, reducing the friction between the pipeline and the pusher base and the support plate. The pushing plate is retracted and reset to drive the shovel plate to slide. The shovel plate scrapes impurities on the upper end surface of the pusher base and rolls them off at the guide groove, which plays a role in removing impurities on the upper end surface of the pusher base. The impurities are injected into the interior of the extrusion cavity through the No. 1 connecting pipe. As the pushing plate pushes the pipeline, the extrusion plate is pushed synchronously. The extrusion plate squeezes the water inside the extrusion cavity to multiple atomizing nozzles for atomization and spraying, so that the friction is reduced after the wet pipeline enters the soil layer, thereby improving the pushing effect of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the limiting plate in the present invention;

[0023] Figure 3 It is a structural schematic diagram of the push plate in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the shovel plate in the present invention;

[0025] Figure 5 It is a partial structural sectional view of the limiting plate in the present invention.

[0026] In the figure: 1. Propulsion machine base; 11. Servo motor; 12. Double threaded rod; 13. Limiting plate; 2. Hydraulic cylinder No. 1; 21. Push plate; 3. Guide groove; 31. Guide block; 4. Hydraulic cylinder No. 2; 41. Long vertical plate; 5. Elastic part No. 1; 51. Support plate; 6. Sliding wheel; 7. Shovel plate; 71. Guide groove; 8. Extrusion chamber; 81. Connecting pipe No. 1; 82. Connecting pipe No. 2; 83. Atomizing nozzle; 9. Extrusion plate; 91. Elastic part No. 2. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figures 1 to 5 As shown, a large-section and long-distance pipe jacking construction device according to an embodiment of the present invention includes a propulsion machine base 1; a servo motor 11 is fixedly connected to one side of the outer wall of the propulsion machine base 1; a double-threaded rod 12 is rotatably connected to the inner wall of the propulsion machine base 1 and close to the servo motor 11, and one end of the double-threaded rod 12 is fixed to the output end of the servo motor 11, and two opposite threads are provided on both sides of the double-threaded rod 12; both sides of the end of the servo motor 11 are slidably connected to the limit plates 13, and the two limit plates 13 are connected to the double-threaded rod 12 The two ends of the pusher base 1 are connected by a screw nut pair; the pusher base 1 is provided with a pushing assembly, which can cooperate with two limit plates 13 to push the pipeline assembly; in the large-section long-distance jacking construction, the "large section" in the large-section long-distance jacking construction refers to the pipe used in the jacking construction with a large diameter and size. The long-distance jacking construction uses the jacking machine's propulsion mechanism as one of the main mechanisms for large-section long-distance jacking construction. The pusher base 1 is the main building frame of the propulsion mechanism. According to the different models of the laid pipelines, the servo The output end of the motor 11 drives the double-threaded rod 12 to rotate forward on the propulsion machine base 1. The two limit plates 13 and the double-threaded rod 12 are matched with the screw nut pair to make the two limit plates 13 close to each other. The distance between the two limit plates 13 is adjusted to be consistent with the diameter of the corresponding pipeline at this time. The tool pipe is hung between the two limit plates 13 using a crane and is located in front of the pushing component. The tool pipe is pushed into the soil layer and excavated inward by relying on the pushing component. The excavated soil is discharged through the screw conveyor. The tool pipe is almost completely pushed into the soil for a long distance. After the layer is completed, the output end of the pushing assembly retracts, and the hoisted pipeline continues to be pushed forward in the same way. This reciprocating operation is repeated until all pipelines are pushed into place. Finally, the tool pipe is lifted from the receiving well, and the entire pipeline is laid. If a pipeline with a larger diameter is used, the output end of the servo motor 11 is used to drive the double-threaded rod 12 to rotate in the opposite direction, and the two limit plates 13 on the double-threaded rod 12 are away from each other. The distance between the two limit plates 13 can be adjusted to correspond to the pipeline with a larger diameter, thereby playing a role in adapting the jacking construction to pipelines of different diameters.

[0029] like Figures 1 to 4As shown, the pushing assembly includes a No. 1 hydraulic cylinder 2 and a pushing plate 21; the No. 1 hydraulic cylinder 2 is fixedly connected to the side of the end of the propulsion base 1 away from the servo motor 11; the pushing plate 21 is fixedly connected to the output end of the No. 1 hydraulic cylinder 2, and the bottom of the pushing plate 21 is attached to the upper end surface of the propulsion base 1; when pushing the large-section pipeline, the pipeline is attached between the outer walls of the two limit plates 13, and one end of the pipeline is attached to the outer wall of the pushing plate 21, and the output end of the No. 1 hydraulic cylinder 2 is used to push the pushing plate 21 to slide, and the pushing plate 21 synchronously pushes the pipeline to slide between the two limit plates 13 until the pipeline is pushed into the soil layer. The output end of the No. 1 hydraulic cylinder 2 drives the pushing plate 21 to retract, waiting for the next section of the pipeline to be lowered and continue to push repeatedly, thereby pushing the large-section pipeline.

[0030] like Figures 1 to 5 As shown, a guide groove 3 is provided at the top of the pushing plate 21; guide blocks 31 are fixedly connected to the tops of the two limit plates 13 respectively; when the pipeline with a large cross-section is hoisted and lowered onto the propulsion machine base 1, since it is difficult to control the angle and lowering distance of the pipeline with a large cross-section, one end of the pipeline is attached to the inclined surface of a guide block 31 by relying on a crane, and the pipeline is lowered along the inclined surface of a guide block 31 between the two limit plates 13, and the other end of the pipeline is guided by the guide groove 3, so that the other end of the pipeline is attached to the outer wall of the pushing plate 21 for easy pushing, thereby playing a role in guiding and hoisting the pipeline.

[0031] like Figures 1 to 3 As shown, the middle part of the inner wall of the pushing plate 21 is fixedly connected with the No. 2 hydraulic cylinder 4; the output end of the No. 2 hydraulic cylinder 4 is fixedly connected with the long vertical plate 41; when pushing the pipeline, since the pushing plate 21 is difficult to push the pipeline over the limit plate 13, the subsequent pipeline is likely to collide with the previous pipeline, and the pushing plate 21 is used to push the pipeline close to the limit plate 13 first, and then the output end of the No. 2 hydraulic cylinder 4 drives the long vertical plate 41 to continue to push the pipeline over the limit plate 13, so as to facilitate the subsequent pipeline hoisting and placement between the two limit plates 13.

[0032] like Figures 1 to 4 As shown, a plurality of No. 1 elastic members 5 are fixedly connected to the central end of the propulsion machine base 1; a support plate 51 is fixedly connected to the end of the No. 1 elastic member 5; when the pipeline is hoisted, the pipeline is hoisted onto the support plate 51 by a crane, and the plurality of No. 1 elastic members 5 cooperate with the support plate 51 to assist in supporting the pipeline. As the crane slowly lowers the pipeline, the gravity of the pipeline presses the support plate 51 down, and the plurality of No. 1 elastic members 5 contract and bear the force until the upper end surface of the support plate 51 is flush with the upper end surface of the propulsion machine base 1 and starts to push the pipeline. After the pipeline is pushed and assembled, the elastic force of the plurality of No. 1 elastic members 5 drives the No. 1 elastic member 5 to reset, which is convenient for assisting in supporting and hoisting the next section of the pipeline.

[0033] The inner walls of the ends of the propulsion machine base 1 and the support plate 51 are fixed with fixed rods; a plurality of the fixed rods are rotatably connected to sliding wheels 6; a through groove is provided at the bottom middle end of the pushing plate 21, and the through groove is arranged corresponding to the sliding wheel 6; when a large-section pipeline is placed on the support plate 51 and pushed, the gravity of the pipeline is pressed on the support plate 51, and the pipeline and the propulsion machine base 1 and the support plate 51 rub against each other during the pushing process, which can easily cause pipeline wear. A plurality of fixed rods are respectively installed on the propulsion machine base 1 and the support plate 51, and the sliding wheels 6 on the plurality of fixed rods are respectively located below the middle part of the pipeline. The plurality of sliding wheels 6 roll during the pushing process of the pipeline, reducing the friction between the pipeline and the propulsion machine base 1 and the support plate 51.

[0034] A shovel plate 7 is fixedly connected to the bottom of the side of the pushing plate 21 away from the limit plate 13; two opposite guide grooves 71 are provided at the end of the propulsion machine base 1 near the shovel plate 7; when a large-section pipeline is placed on the propulsion machine base 1 and pushed, it is easy to generate vibration. Since the propulsion mechanism is installed in the pit, the vibration can easily cause small gravel and soil to fall and adhere to the upper end face of the propulsion machine base 1, thereby affecting the pushing of the pipeline. The pushing plate 21 is retracted and reset to drive the shovel plate 7 to slide, and the shovel plate 7 is attached to the upper end face of the propulsion machine base 1 to scrape the impurities on the upper end face of the propulsion machine base 1 and roll them down in the guide groove 71, thereby clearing the impurities on the upper end face of the propulsion machine base 1.

[0035] like Figures 1 to 5 As shown, an extrusion cavity 8 is opened inside the plurality of limit plates 13; a No. 1 connecting pipe 81 is fixedly connected to the interior of the limit plate 13, and the No. 1 connecting pipe 81 is communicated with the extrusion cavity 8; a No. 2 connecting pipe 82 is fixedly connected to the interior of the limit plate 13 near the No. 1 connecting pipe 81, and the No. 2 connecting pipe 82 is communicated with the extrusion cavity 8; a plurality of atomizing nozzles 83 are fixedly connected to the outer wall of the inclined surface of the guide block 31, and the plurality of atomizing nozzles 83 are communicated with the No. 2 connecting pipe 82; an extrusion assembly is provided inside the limit plate 13, and the extrusion assembly The component is used to push the water inside the extrusion chamber 8 to multiple atomizing nozzles 83 for spraying; when the large-section pipeline is pushed into the soil layer, the external water pipe is connected to the No. 1 connecting pipe 81, and the pumped water is transported from the No. 1 connecting pipe 81 into the extrusion chamber 8 for temporary storage. As the pushing plate 21 pushes the pipeline, the extrusion component is triggered, and the extrusion component squeezes the water temporarily stored in the extrusion chamber 8 through the No. 2 connecting pipe 82 to multiple atomizing nozzles 83 for atomization spraying. The water spray moistens the surface of the pipeline, reducing friction after the pipeline enters the soil layer, thereby improving the pushing effect of the pipeline.

[0036] The extrusion assembly includes an extrusion plate 9 and a No. 2 elastic member 91; the extrusion plate 9 is slidably connected to the inner wall of the extrusion chamber 8; the No. 2 elastic member 91 is fixed between the extrusion plate 9 and the inner wall of the limit plate 13; when the water temporarily stored inside the extrusion chamber 8 is squeezed and sprayed, the pushing plate 21 is used to push the pipeline to slide, and the extrusion plate 9 is squeezed to slide synchronously during the pushing process of the pushing plate 21. The extrusion plate 9 slides on the inner wall of the extrusion chamber 8 and squeezes the water inside the extrusion chamber 8. The water is sent to multiple atomizing nozzles 83 through the No. 2 connecting pipe 82 and sprayed on the pipeline surface, thereby squeezing and spraying the water inside the extrusion chamber 8.

[0037] A one-way valve is fixedly connected to the interior of the No. 1 connecting pipe 81; the one-way valve is used to direct the water transported in the No. 1 connecting pipe 81 to flow underwater into the extrusion chamber 8; when the water inside the extrusion chamber 8 is squeezed and sprayed, part of the water inside the extrusion chamber 8 is squeezed and easily flows back from the No. 1 connecting pipe 81. A one-way valve is installed in the No. 1 connecting pipe 81. The one-way valve is not shown in the figure. The one-way valve enables the No. 1 connecting pipe 81 to inject water into the extrusion chamber 8, but when the extrusion plate 9 squeezes the water inside the extrusion chamber 8, the one-way valve intercepts the water in the extrusion chamber 8, so that the water inside the extrusion chamber 8 is squeezed and sent out from the No. 2 connecting pipe 82, thereby controlling the flow inside the No. 1 connecting pipe 81.

[0038] Working process: In the large-section and long-distance pipe jacking construction, the "large section" in the large-section and long-distance pipe jacking construction refers to the pipes used in the pipe jacking construction having a larger diameter and size. The long-distance pipe jacking construction uses the propulsion mechanism of the pipe jacking machine as one of the main mechanisms for large-section and long-distance pipe jacking construction. The propulsion machine base 1 is the main building frame of the propulsion mechanism. According to the different models of the laid pipelines, the output end of the servo motor 11 drives the double-threaded rod 12 to rotate forward on the propulsion machine base 1. The two limit plates 13 and the double-threaded rod 12 are matched through the screw nut pair to make the two limit plates 13 close to each other. , adjust the distance between the two limit plates 13 to be consistent with the diameter of the corresponding pipeline at this time, use a crane to hang the tool pipe between the two limit plates 13, and in front of the pushing assembly, rely on the pushing assembly to push the tool pipe into the soil layer and dig inward, the excavated soil is discharged through the screw conveyor, and after the tool pipe is almost completely pushed into the long distance soil layer, the output end of the pushing assembly is retracted, and the upper pipeline is hoisted and pushed forward in the same way, and so on and so forth until all the pipelines are pushed into place. Finally, the tool pipe is lifted from the receiving well, and the entire pipeline is laid. If a pipeline with a larger diameter is used, The output end of the servo motor 11 drives the double-threaded rod 12 to rotate in the opposite direction, and the two limit plates 13 on the double-threaded rod 12 move away from each other. The distance between the two limit plates 13 can be adjusted to correspond to the pipeline with a larger diameter, which plays a role in adapting the jacking construction of pipelines with different diameters; when pushing the pipeline with a large cross-section, the pipeline is fitted between the outer walls of the two limit plates 13, and one end of the pipeline is fitted to the outer wall of the pushing plate 21, and the output end of the No. 1 hydraulic cylinder 2 is used to push the pushing plate 21 to slide, and the pushing plate 21 synchronously pushes the pipeline to slide between the two limit plates 13 until the pipeline is pushed into the soil layer. The output end of the hydraulic cylinder 2 drives the pushing plate 21 to retract, waiting for the next section of the pipeline to be lowered and continued to push repeatedly, playing the role of pushing the large-section pipeline; when the large-section pipeline is hoisted and placed on the propulsion machine base 1, since it is difficult to control the angle and lowering distance of the large-section pipeline, the crane is used to fit one end of the pipeline on the inclined surface of a guide block 31, and the pipeline is lowered along the inclined surface of a guide block 31 between the two limit plates 13, and the guide groove 3 is used to guide the other end of the pipeline so that the other end of the pipeline is fitted on the outer wall of the pushing plate 21 for easy pushing, playing the role of guiding and hoisting the pipeline;

[0039] When pushing the pipeline, since the pushing plate 21 has difficulty in pushing the pipeline over the limit plate 13, the subsequent pipeline is likely to collide with the previous pipeline. The pushing plate 21 is used to push the pipeline close to the limit plate 13 first, and then the output end of the second hydraulic cylinder 4 drives the long vertical plate 41 to continue pushing the pipeline over the limit plate 13, so that the subsequent pipeline is easily hoisted and placed between the two limit plates 13.

[0040] When the pipe is hoisted, the pipe is hoisted onto the support plate 51 by the crane, and the multiple No. 1 elastic members 5 cooperate with the support plate 51 to assist in supporting the pipe. As the crane slowly lowers the pipe, the gravity of the pipe presses the support plate 51 downward, and the multiple No. 1 elastic members 5 contract and bear the force until the upper end surface of the support plate 51 is flush with the upper end surface of the propulsion machine base 1 and starts to push the pipe. After the pipe is pushed and assembled, the elastic force of the multiple No. 1 elastic members 5 drives the No. 1 elastic member 5 to return to its original position, which is convenient for assisting in supporting and hoisting the next section of the pipe. When the large-section pipe is placed on the support plate 51 and pushed, the gravity of the pipe presses on the support plate 51. During the pushing process, the pipe and the propulsion machine base 1 and the support plate 51 rub against each other, which can easily cause pipe wear. Multiple fixing rods are respectively installed on the propulsion machine base 1 and the support plate 51. The sliding wheels 6 on the multiple fixing rods are respectively located below the middle of the pipe. The multiple sliding wheels 6 roll during the pushing process of the pipe to reduce the friction between the pipe and the propulsion machine base 1 and the support plate 51.

[0041] When a large-section pipeline is placed on the propulsion machine base 1 and pushed, it is easy to generate vibration. Since the propulsion mechanism is installed in the soil pit, the vibration can easily cause small gravel and soil to fall and adhere to the upper end surface of the propulsion machine base 1, thereby affecting the pushing of the pipeline. The pushing plate 21 is retracted and reset to drive the shovel plate 7 to slide. The shovel plate 7 is attached to the upper end surface of the propulsion machine base 1 to scrape the impurities on the upper end surface of the propulsion machine base 1 and roll them down at the guide groove 71, thereby playing the role of removing impurities on the upper end surface of the propulsion machine base 1;

[0042] When the large-section pipeline is pushed into the soil layer, the external water pipe is connected to the No. 1 connecting pipe 81, and the pumped water is transported from the No. 1 connecting pipe 81 into the extrusion chamber 8 for temporary storage. As the pushing plate 21 pushes the pipeline, the extrusion assembly is triggered, and the extrusion assembly squeezes the water temporarily stored in the extrusion chamber 8 through the No. 2 connecting pipe 82 to multiple atomizing nozzles 83 for atomization and spraying. The water sprays on the surface of the pipeline to wet it, so that the friction is reduced after the pipeline enters the soil layer, thereby improving the pushing effect of the pipeline; when the water temporarily stored in the extrusion chamber 8 is squeezed and sprayed, the pushing plate 21 is used to push the pipeline to slide. During the pushing process of the pushing plate 21, the extrusion plate 9 slides synchronously, and the extrusion plate 9 slides on the inner wall of the extrusion chamber 8 and squeezes the extrusion. The water inside the cavity 8 is sent to multiple atomizing nozzles 83 through the No. 2 connecting pipe 82 and sprayed on the surface of the pipe, which plays the role of squeezing and spraying the water inside the extrusion cavity 8; when the water inside the extrusion cavity 8 is squeezed and sprayed, part of the water inside the extrusion cavity 8 is squeezed and easily flows back from the No. 1 connecting pipe 81. A one-way valve is installed in the No. 1 connecting pipe 81. The one-way valve is not shown in the figure. The one-way valve enables the No. 1 connecting pipe 81 to inject water into the extrusion cavity 8, but when the extrusion plate 9 squeezes the water inside the extrusion cavity 8, the one-way valve intercepts the water in the extrusion cavity 8, so that the water inside the extrusion cavity 8 is squeezed and sent out from the No. 2 connecting pipe 82, which plays the role of controlling the flow inside the No. 1 connecting pipe 81.

[0043] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-section and long-distance pipe jacking construction device, characterized in that: The invention comprises a propulsion machine base (1); a servo motor (11) is fixedly connected to one side of the outer wall of the propulsion machine base (1); a double-threaded rod (12) is rotatably connected to the inner wall of the propulsion machine base (1) near the servo motor (11), and one end of the double-threaded rod (12) is fixedly connected to the output end of the servo motor (11), and two opposite threads are arranged on both sides of the double-threaded rod (12); both sides of the end of the servo motor (11) are slidably connected to limit plates (13), and the two limit plates (13) are connected to the double-threaded rod (12) through a screw nut pair; and a pushing assembly is arranged at the end of the propulsion machine base (1), and the pushing assembly can cooperate with the two limit plates (13) to push the pipeline assembly.

2. A large-section and long-distance pipe jacking construction device according to claim 1, characterized in that: The pushing assembly comprises a No. 1 hydraulic cylinder (2) and a pushing plate (21); the No. 1 hydraulic cylinder (2) is fixedly connected to a side of the end of the pushing machine base (1) away from the servo motor (11); the pushing plate (21) is fixedly connected to the output end of the No. 1 hydraulic cylinder (2), and the bottom of the pushing plate (21) is in contact with the upper end surface of the pushing machine base (1).

3. A large-section and long-distance pipe jacking construction device according to claim 2, characterized in that: A guide groove (3) is provided at the top end of the pushing plate (21); and guide blocks (31) are fixedly connected to the top ends of the two limiting plates (13) respectively.

4. A large-section and long-distance pipe jacking construction device according to claim 2, characterized in that: A No. 2 hydraulic cylinder (4) is fixedly connected to the middle of the inner wall of the pushing plate (21); and a long vertical plate (41) is fixedly connected to the output end of the No. 2 hydraulic cylinder (4).

5. A large-section and long-distance pipe jacking construction device according to claim 2, characterized in that: A plurality of No. 1 elastic members (5) are fixedly connected to the central end of the propulsion machine seat (1); and a support plate (51) is fixedly connected to the end of the No. 1 elastic member (5).

6. A large-section and long-distance pipe jacking construction device according to claim 5, characterized in that: The inner walls of the ends of the propulsion machine seat (1) and the support plate (51) are fixedly connected with fixing rods; a plurality of the fixing rods are rotatably connected with sliding wheels (6); a through groove is provided at the middle bottom end of the pushing plate (21), and the through groove is arranged corresponding to the sliding wheel (6).

7. A large-section and long-distance pipe jacking construction device according to claim 2, characterized in that: A shovel plate (7) is fixedly connected to the bottom of one side of the push plate (21) away from the limit plate (13); and two opposite guide grooves (71) are provided at the end of the propulsion machine seat (1) near the shovel plate (7).

8. A large-section and long-distance pipe jacking construction device according to claim 3, characterized in that: An extrusion chamber (8) is provided inside the plurality of limit plates (13); a first connecting pipe (81) is fixedly connected inside the limit plates (13), and the first connecting pipe (81) is communicated with the extrusion chamber (8); a second connecting pipe (82) is fixedly connected inside the limit plates (13) near the first connecting pipe (81), and the second connecting pipe (82) is communicated with the extrusion chamber (8); a plurality of atomizing nozzles (83) are fixedly connected to the outer wall of the inclined surface of the guide block (31), and the plurality of atomizing nozzles (83) are communicated with the second connecting pipe (82); an extrusion assembly is provided inside the limit plates (13), and the extrusion assembly is used to push water inside the extrusion chamber (8) to the plurality of atomizing nozzles (83) for spraying.

9. A large-section and long-distance pipe jacking construction device according to claim 8, characterized in that: The extrusion assembly comprises an extrusion plate (9) and a second elastic member (91); the extrusion plate (9) is slidably connected to the inner wall of the extrusion cavity (8); and the second elastic member (91) is fixed between the extrusion plate (9) and the inner wall of the limiting plate (13).

10. A large-section and long-distance pipe jacking construction device according to claim 8, characterized in that: A one-way valve is fixedly connected to the interior of the No. 1 connecting pipe (81); the one-way valve is used to allow the water transported in the No. 1 connecting pipe (81) to flow underwater into the extrusion chamber (8).

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