A pipe jacking mud discharge system and pipe jacking construction method

Abstract

The present application relates to a pipe jacking mud discharge system, which belongs to the field of earth pressure balance shield, and comprises a plurality of pipe bodies connected end to end, wherein the pipe body at the head end is provided with a cutting disc and a screw conveyor, wherein the pipe body is provided with a first driving mechanism facing the screw conveyor, wherein the first driving mechanism is provided with a transport vehicle, wherein the pipe body is further provided with a second driving mechanism, wherein a moving assembly for exchanging transport vehicles is provided between the first driving mechanism and the second driving mechanism at one end close to the screw conveyor. The present application has the effect of improving the mud discharge efficiency inside the pipe jacking, thereby improving the construction efficiency.

Description

Technical Field

[0001] The present application relates to the field of earth pressure balance shield, and in particular to a pipe jacking mud discharge system and a pipe jacking construction method. Background Art

[0002] The basic principle of the earth pressure balance shield is to use a tangible steel component to excavate the soil along the tunnel design axis and advance forward. When the shield advances, the cutter head at the front end of the top pipe rotates to excavate the stratum soil, and the cut soil enters the soil chamber. When the soil fills the soil chamber, its passive soil pressure is basically balanced with the soil pressure and water pressure on the excavation face, so that the excavation face and the shield face are in a balanced state. The soil in the soil chamber is discharged into the soil box inside the top pipe, and then the soil box with soil is transported to the surface.

[0003] In the process of transporting soil, the soil box needs to be removed from the jacking pipe before a new soil box can be transported into the jacking pipe to receive the soil discharged by the screw conveyor. In large-span tunnel operations, this method of discharging soil will have a long waiting time and low efficiency. Summary of the invention

[0004] In order to improve the efficiency of discharging mud inside a jacking pipe and thereby improve the construction efficiency, the present application provides a jacking pipe mud discharge system and a jacking pipe construction method.

[0005] The present application provides a pipe jacking mud removal system and a pipe jacking construction method using the following technical solutions:

[0006] In the first aspect, the present application provides a pipe jacking mud removal system, which adopts the following technical solution:

[0007] A jacking pipe mud discharge system includes a plurality of pipe bodies connected end to end, wherein the pipe body at the head end is provided with a cutting disc and a screw conveyor, a first driving mechanism facing the screw conveyor is provided inside the pipe body, a transport vehicle is provided on the first driving mechanism, a second driving mechanism is also provided inside the pipe body, and a moving component for exchanging transport vehicles is provided between the ends of the first driving mechanism and the second driving mechanism close to the screw conveyor.

[0008] By adopting the above technical solution, the transport vehicle is moved to the screw conveyor through the first driving mechanism, and the screw conveyor transports the soil cut by the cutting disc to the transport vehicle on the first driving mechanism. Then the transport vehicle is moved to the second driving mechanism through the moving component, and the second driving mechanism drives the transport vehicle to detach from the jacking pipe, thereby discharging the soil. In the process of the transport vehicle moving the second driving mechanism, the second transport vehicle is moved to the screw conveyor again under the action of the first driving mechanism, so that the transport vehicle can enter and detach from the jacking pipe at the same time, thereby reducing waiting time, improving soil discharge efficiency, and improving the overall efficiency of jacking construction.

[0009] Optionally, the first driving mechanism includes a first guide rail arranged inside the tube body and parallel to the axis of the tube body, a guide groove parallel to the axis of the tube body is formed on the upper end surface of the first guide rail, the lower end of the transport vehicle is inserted into the guide groove, and a first conveyor belt for conveying the transport vehicle is provided at the bottom of the guide groove, and rotating rollers rotatably connected to the first guide rail are provided at both ends of the first conveyor belt, and a driving member for driving the rotating rollers to rotate is provided between adjacent rotating rollers.

[0010] By adopting the above technical solution, the lower end of the transport vehicle is inserted into the guide groove and abuts against the first conveyor belt. The driving member drives the rotating roller to rotate, so that the first conveyor belt is transmitted, thereby driving the transport vehicle to move. The rotating roller on the adjacent first guide rail rotates at the same time under the action of the driving member, so that the first transmission belt on the first guide rail installed in sequence can obtain transmission force, thereby improving the installation efficiency.

[0011] Optionally, a first connecting portion is provided at one end of the first guide rail, and a second connecting portion is provided at the other end, and the first connecting portion and the second connecting portion between adjacent first guide rails are clamped.

[0012] By adopting the above technical solution, the adjacent first guide rail and the second guide rail are clamped together by the first connecting part and the second connecting part, so that the first guide rail is quickly installed, and the position of the first guide rail is quickly positioned and adjusted under the action of the first connecting part and the second connecting part, and the stability of the first guide rail after installation is improved.

[0013] Optionally, the second driving mechanism has the same structure as the first driving mechanism and is arranged side by side. The second driving mechanism includes a second guide rail parallel to the first guide rail. A connecting block connecting the first guide rail and the second guide rail is provided between the two. A fixing rod is threadedly connected to the connecting block, and one end of the fixing rod away from the connecting block abuts against the inner wall of the tube body.

[0014] By adopting the above technical solution, the fixing rod rotates relative to the connecting block, so that the end of the fixing rod away from the connecting block is pressed against the inner wall of one side of the top pipe, and at the same time, the connecting block is squeezed to move toward the inner wall of the other side of the top pipe, so that the first guide rail and the second guide rail are pressed against the inner wall of the top pipe under the pressure of the fixing rod, thereby the first guide rail, the second guide rail and the fixing rod form a triangular support in the top pipe, thereby improving the stability of the first guide rail and the second guide rail, and also facilitating disassembly and assembly.

[0015] Optionally, the upper end surface of the first conveyor belt is configured to be wavy, and the lower end surface of the transport vehicle is plug-fitted with the upper end surface of the first conveyor belt.

[0016] By adopting the above technical solution, the wavy end surface of the first conveyor belt cooperates with the transport vehicle, thereby increasing the friction between the first transmission belt and the transport vehicle, thereby reducing the possibility of the transport vehicle and the first conveyor belt slipping and moving. At the same time, since the wavy structure has a certain curvature, the transport vehicle can maintain relative sliding with the first conveyor belt under the action of external force, thereby reducing the possibility of the first conveyor belt being damaged due to the transport vehicle and the first conveyor belt being stuck.

[0017] Optionally, the moving component includes a support frame arranged below the screw conveyor, a conveyor belt is provided on the support frame, the conveyor belt connects the first guide rail and the second guide rail, the conveyor belt is provided with a plurality of guide rails evenly distributed and opposite to the guide groove, and the support frame is also provided with a mud discharge component that drives the transport vehicle to separate from the conveyor belt and onto the second guide rail.

[0018] By adopting the above technical solution, when the transport vehicle moves along the first guide rail to the conveyor belt, the guide rail limits the position of the transport vehicle on the conveyor belt, and then the conveyor belt transports the transport vehicle to a position opposite to the second guide rail. When the next transport vehicle approaches the second guide rail again through the conveyor belt, the mud discharge assembly drives the previous transport vehicle to move to the second guide rail, thereby transporting the mud to the outside of the top pipe along the second guide rail. As a result, the entry and discharge of the transport vehicle in the top pipe do not affect each other, thereby improving the mud discharge efficiency.

[0019] Optionally, the mud discharge assembly is located on a side of the conveyor belt away from the second guide rail, and the mud discharge assembly includes a push rod parallel to the second guide rail and slidably connected to the support frame. An eccentric wheel for driving the push rod to reciprocate is provided at one end of the push rod away from the second guide rail. The eccentric wheel is rotatably connected to the support frame, and a drive motor for driving the eccentric wheel to rotate is provided on the support frame.

[0020] By adopting the above technical solution, when the conveyor belt is driven, the driving motor drives the eccentric wheel to rotate, and the eccentric wheel drives the push rod to reciprocate during the rotation. When the second transport vehicle approaches the second guide rail, the push rod extends toward the second guide rail and pushes the first transport vehicle into the second guide rail. After the first transport vehicle completely enters the second guide rail, the second transport vehicle gradually reaches the position of the original first transport vehicle, thereby repeating and continuously discharging mud.

[0021] Optionally, the moving component and the mud discharge component are both electrically connected to a control component, and the control component includes a controller for controlling the driving motor and the opening and closing of the conveyor belt, and the controller is also electrically connected to a sensor for detecting the position of the transport vehicle.

[0022] By adopting the above technical solution, when the sensor detects that the transport vehicle moves to the second guide rail through the conveyor belt, the controller controls the conveyor belt to stop conveying, and then controls the drive motor to rotate, so that the eccentric wheel rotates one circle, so that the push rod pushes the transport vehicle onto the second guide rail. After the sensor detects that the transport vehicle arrives at the second guide rail, the controller controls the conveyor belt to convey again, thereby repeating the above steps, gradually replacing the transport vehicle to quickly discharge mud.

[0023] Optionally, a feed hopper is provided above the conveyor belt, one end of the feed hopper is connected to the screw conveyor, and the other end faces one end of the conveyor belt close to the first guide rail, a storage bin for storing sand is provided on the side of the feed hopper close to the first guide rail, a discharge port facing the transport vehicle is provided below the storage bin, a rotating shaft is rotatably connected in the discharge port, a plurality of evenly distributed partition plates are provided on the rotating shaft, a side of the partition plate away from the rotating shaft abuts against the side wall of the discharge port, a rubber block is provided at the end of the rotating shaft, and the side wall of the rubber block abuts against the upper end surface of the frame of the transport vehicle.

[0024] By adopting the above technical solution, in the process of the transport vehicle moving from the first guide rail to the conveyor belt, the upper end surface of the frame of the transport vehicle rubs against the rubber block, thereby driving the rotating shaft to rotate, so that the sand and soil in the storage bin of the partition plate is discharged from the material outlet and scattered into the transport vehicle. Then the transport vehicle reaches the conveyor belt and takes over the soil. The sand and soil make it difficult for the soil to adhere to the side wall of the transport vehicle, thereby facilitating the discharge of the soil from the transport vehicle.

[0025] In a second aspect, the present application provides a pipe jacking construction method, which adopts the following technical solution:

[0026] A pipe jacking construction method comprises the following steps:

[0027] S1: The cutting disc and screw conveyor are installed at the end of a jacking pipe;

[0028] S2: A feed hopper, a first drive mechanism, a second drive mechanism and a moving assembly are installed inside the top pipe;

[0029] S3: The first driving mechanism drives the transport vehicle to the bottom of the feed hopper, and the transport vehicle collects the soil;

[0030] S4: the moving assembly drives the transport vehicle to approach the second driving mechanism, and at the same time the mud discharge assembly pushes the previous transport vehicle onto the second driving mechanism, and the transport vehicle is separated from the jacking pipe under the drive of the second driving mechanism;

[0031] S5: The end of the second jacking pipe is connected to the tail of the first jacking pipe, and the first driving mechanism and the second driving mechanism are sequentially installed inside the second jacking pipe to ensure the passage of the transport vehicle.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The first drive mechanism, the second drive mechanism and the moving assembly enable the inside of the jacking pipe to enter or exit the transport vehicle at the same time, reducing the waiting time for mud discharge inside the jacking pipe and improving work efficiency;

[0034] 2. The fixing rod, the first guide rail and the second guide rail form a triangular support structure, which improves the stability of the first guide rail and the second guide rail and the convenience of disassembly and assembly;

[0035] 3. Automatically adding sand and soil before the transport vehicle carries the soil can reduce the possibility of soil adhering to the inner wall of the transport vehicle, while reducing manual operations and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0037] Figure 2 It is a schematic diagram of the structure inside the first tube body in the embodiment of the present application.

[0038] Figure 3 It is a structural schematic diagram of the connection between the support block and the first conveyor belt.

[0039] Figure 4 It is a schematic diagram of the structure of the moving component, the mud discharge component and the control component in the embodiment of the present application.

[0040] Figure 5 It is a schematic diagram of the connection structure of adjacent first guide rails in an embodiment of the present application.

[0041] Figure 6 It is a schematic diagram of the connection structure between the storage bin and the transport vehicle in the embodiment of the present application.

[0042] Figure 7 yes Figure 6 Enlarged schematic diagram of part A in the middle.

[0043] Explanation of the reference numerals: 1. tube body; 2. cutting disc; 3. screw conveyor; 4. first driving mechanism; 41. first guide rail; 411. guide groove; 412. first connecting part; 413. second connecting part; 42. first conveyor belt; 43. rotating roller; 44. driving member; 5. second driving mechanism; 51. second guide rail; 52. connecting block; 53. fixing rod; 6. moving assembly; 61. conveyor belt; 62. guide rail; 7. supporting frame; 71. feed hopper; 72. storage bin; 721. discharge port; 722. rotating shaft; 723. rubber block; 724. partition plate; 73. control assembly; 731. first sensor; 732. second sensor; 8. mud discharge assembly; 81. push rod; 82. eccentric wheel; 83. driving motor; 84. spring; 9. transport vehicle; 91. supporting block. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 -Attached Figure 7 This application is described in further detail.

[0045] The present application embodiment discloses a pipe jacking mud removal system. Figure 1 and Figure 2 A pipe top mud discharge system includes a pipe body 1, a cutting disc 2 is installed at one end of the pipe body 1, a screw conveyor 3 located inside the pipe body 1 is installed on the side of the cutting disc 2 facing the inside of the pipe body 1, a support frame 7 is provided below the end of the screw conveyor 3 away from the cutting disc 2, a moving component 6 is provided on the support frame 7, one end of the moving component 6 is connected to a first driving mechanism 4, and the other end is connected to a second driving mechanism 5, and a transport vehicle 9 moves in sequence along the first driving mechanism 4, the moving component 6 and the second driving mechanism 5. A feed hopper 71 is fixedly connected to the upper end of the support frame 7, one end of the feed hopper 71 is located at the discharge port of the screw conveyor 3, and the other end faces the end of the moving component 6 close to the first driving mechanism 4.

[0046] The transport vehicle 9 reaches the moving assembly 6 along the first driving mechanism 4, and at the same time receives the soil discharged by the screw conveyor 3. Then the transport vehicle 9 moves along the moving assembly 6 to the second driving mechanism 5, and moves in the direction of separating from the tube body 1 under the action of the second driving mechanism 5, thereby discharging the soil inside the tube body 1.

[0047] Reference Figure 2 and Figure 3The first driving mechanism 4 includes a first guide rail 41 parallel to the axis of the tube body 1. The upper end surface of the first guide rail 41 is provided with two guide grooves 411 parallel to the axis of the tube body 1. The lower end of the transport vehicle 9 is provided with a support block 91 inserted into the guide groove 411. Rotating rollers 43 are rotatably connected at both ends of the first guide rail 41. The axis of the rotating roller 43 is perpendicular to the axis of the tube body 1. A first conveyor belt 42 is provided between the two rotating rollers 43 to connect the two and correspond to the guide grooves 411 one by one. The first conveyor belt 42 is located between the bottom of the guide groove 411 and the support block 91. One of the rotating rollers 43 is driven by a motor. When the rotating roller 43 rotates, the first conveyor belt 42 drives the transport vehicle 9 to move. The side wall of the first conveyor belt 42 facing the support block 91 is set to be wavy, and the side wall of the support block 91 facing the first conveyor belt 42 is also set to be wavy. The support block 91 and the first conveyor belt 42 are plugged in cooperation.

[0048] The second driving mechanism 5 has the same structure as the first driving mechanism 4. The second driving mechanism 5 includes a second guide rail 51 located on one side of the first guide rail 41 and parallel to the first guide rail 41. A connecting block 52 is provided between the first guide rail 41 and the second guide rail 51 to connect the two. The first guide rail 41 and the second guide rail 51 are respectively abutted against the two side walls of the lower end of the inside of the tube body 1. In order to improve the stability of the first guide rail 41 and the second guide rail 51 in the tube body 1, a vertically arranged fixing rod 53 is provided on the connecting block 52. One end of the fixing rod 53 is threadedly connected to the connecting block 52, and the other end abuts against the upper side wall inside the tube body 1. At this time, the fixing rod 53, the first guide rail 41 and the second guide rail 51 form a triangular support structure, thereby being able to quickly and stably fix the first guide rail 41 and the second guide rail 51.

[0049] Reference Figure 2 and Figure 4 The moving assembly 6 includes a conveyor belt 61 mounted on the support frame 7, and the conveyor belt 61 is also driven by a motor. The conveying direction of the conveyor belt 61 is perpendicular to the axis of the tube body 1. One side of one end of the conveyor belt 61 is arranged opposite to the first guide rail 41, and the same side of the other side of the conveyor belt 61 is arranged opposite to the second guide rail 51. A plurality of guide rails 62 parallel to the axis of the tube body 1 are fixed on the outer side wall of the conveyor belt 61, and a guide groove 411 identical to the guide groove 411 on the first guide rail 41 is provided on the guide rail 62, and along the direction close to the first guide rail 41, the two opposite side walls of the guide groove 411 at the end position of the guide rail 62 are away from each other, so as to facilitate the transport vehicle 9 to slide from the guide groove 411 of the first guide rail 41 to the guide groove 411 of the guide rail 62.

[0050] When the transport vehicle 9 leaves the first guide rail 41 and enters the conveyor belt 61, the conveyor belt 61 is in a stationary state. At this time, the pipe body 1 moves along the axial direction with the assistance of the cutting disc 2, and the mud is discharged into the transport vehicle 9 through the feed hopper 71. After the pipe body 1 moves a certain distance and stops, the conveyor belt 61 drives the transporter to move to the side where the second guide rail 51 is located, and the support frame 7 is provided with a mud discharge component 8 that drives the transporter to the second guide rail 51.

[0051] Reference Figure 2 and Figure 4 When the transport vehicle 9 faces the second guide rail 51, the mud discharge assembly 8 pushes the transport vehicle 9 into the guide groove 411 of the second guide rail 51. The mud discharge assembly 8 includes a push rod 81 arranged on the side of the conveyor belt 61 away from the second guide rail 51. The push rod 81 is parallel to the axis of the tube body 1 and is slidably connected to the support frame 7. A spring 84 is sleeved on the push rod 81. One end of the spring 84 is fixedly connected to the support frame 7, and the other end is fixedly connected to the push rod 81. The spring 84 is in a compressed state and drives the push rod 81 away from the second guide rail 51. An eccentric wheel 82 is provided on the side of the push rod 81 away from the second guide rail 51. The eccentric wheel 82 is rotatably connected to the support frame 7 on a horizontal plane, and the edge of the eccentric wheel 82 abuts against the end of the push rod 81. A driving motor 83 for driving the eccentric wheel 82 to rotate is installed on the support frame 7.

[0052] The driving motor 83 drives the eccentric wheel 82 to rotate. Under the joint action of the eccentric wheel 82 and the spring 84 , the push rod 81 performs a reciprocating sliding motion, and the push rod 81 pushes the transport vehicle 9 onto the second guide rail 51 .

[0053] In order to control the position of the transport vehicle 9 on the conveyor belt 61, a control component 73 is also provided on the support frame 7. The control component 73 includes a first sensor 731 and a second sensor 732 fixed on the support frame 7, wherein the first sensor 731 faces the first guide rail 41, and the second sensor 732 faces the second guide rail 51. The control component 73 also includes a controller, and the first sensor 731, the second sensor 732, the drive motor 83 and the motor are all electrically connected to the controller.

[0054] When the first sensor 731 detects that the transport vehicle 9 on the first guide rail 41 arrives on the conveyor belt 61, the controller controls the movement of the conveyor belt 61 and drives the transport vehicle 9 to approach the second guide rail 51. When the transport vehicle 9 is facing the second guide rail 51, the second sensor 732 just detects the transport vehicle 9. At this time, the controller controls the conveyor belt 61 to stop conveying. At the same time, the controller controls the drive motor 83 to run, thereby driving the eccentric wheel 82 to rotate one circle. The push rod 81 then pushes the transport vehicle 9 onto the second guide rail 51. After the second sensor 732 detects that the transport vehicle 9 is away from the conveyor belt 61, the controller receives the signal from the first sensor 731 and repeats the above steps.

[0055] Reference Figure 2 and Figure 5 After the first tube body 1 is pushed into the soil layer, the second tube body 1 needs to continue to connect and push forward. When the second tube body 1 also enters the soil layer, the first drive mechanism 4 and the second drive mechanism 5 are continuously installed inside the second tube body 1. A first connecting portion 412 is provided at one end of the first guide rail 41, and a second connecting portion 413 is provided at the other end. The first connecting portion 412 is configured as a 7-shaped right-angle hook, and the second connecting portion 413 is configured as a 7-shaped right-angle hook that is mutually engaged with the first connecting portion 412. Adjacent rotating rollers 43 on adjacent first guide rails 41 are provided with a driving member 44 that connects the two, and the driving member 44 is configured as a belt, so that one motor can drive the first conveyor belts 42 on all first guide rails 41 to transmit.

[0056] The first guide rail 41 inside the second tube body 1 is plugged into the second connection portion 413 of the first guide rail 41 inside the first tube body 1 through the first connection portion 412, thereby quickly connecting the first guide rail 41 in the adjacent tube body 1. Similarly, the second guide rail 51 is connected in the same way.

[0057] See also Figure 2 and Figure 6 In order to reduce the viscosity of the soil to the inner wall of the transport vehicle 9, a storage bin 72 for storing sand is fixed on one side of the feed hopper 71 close to the first guide rail 41. Figure 6 and Figure 7 The lower end of the storage bin 72 is provided with a feed opening 721 located directly above the transport vehicle 9. A rotating shaft 722 is rotatably connected in the feed opening 721. The ends of the rotating shaft 722 are fixed with annular rubber blocks 723. The upper side wall of the frame parallel to the axis of the tube body 1 on the transport vehicle 9 abuts against the side wall of the edge of the rubber block 723, and the rubber block 723 does not connect with the inside of the storage bin 72. When the transport vehicle 9 moves, the friction force drives the rubber block 723 to rotate, and the rotating shaft 722 rotates. A plurality of partition plates 724 are fixedly connected to the outer wall of the rotating shaft 722. The partition plates 724 on both sides of the rotating shaft 722 abut against and are slidably connected to the side walls of the feed opening 721.

[0058] When the transport vehicle 9 moves to below the discharge port 721, the rotating shaft 722 rotates with the transport vehicle 9, and the sand is taken away from the storage bin 72 from the discharge port 721 through the partition plate 724. The sand is separated from the discharge port 721 and falls on the inner wall of the transport vehicle 9, thereby reducing the viscosity of the inner wall of the transport vehicle 9.

[0059] The implementation principle of a pipe jacking mud discharge system in an embodiment of the present application is as follows: the transport vehicle 9 is moved to the moving component 6 through the first driving mechanism 4, and carries the mud inside the pipe body 1, and then faces the second driving mechanism 5 under the transmission of the moving component 6. At this time, the mud discharge component 8 pushes the transport vehicle 9 from the moving component 6 to the second driving mechanism 5, and the second driving mechanism 5 moves the transport vehicle 9 to the outside of the pipe body 1.

[0060] The embodiment of the present application also discloses a pipe jacking construction method.

[0061] A pipe jacking construction method comprises the following steps:

[0062] S1: The cutting disc 2 and the screw conveyor 3 are installed at the end of a jacking pipe;

[0063] S2: A feed hopper 71, a first drive mechanism 4, a second drive mechanism 5 and a moving assembly 6 are installed inside the top pipe, and the first drive mechanism 4, the second drive mechanism 5 and the moving assembly 6 are all electrically connected to the control assembly 73;

[0064] S3: The first driving mechanism 4 drives the transport vehicle 9 to the conveyor belt 61 of the moving component 6 and is located below the feed hopper 71. The control component 73 controls the conveyor belt 61 to stop, and the transport vehicle 9 collects the soil transported by the screw conveyor 3.

[0065] S4: The control component 73 controls the conveyor belt 61 to transfer the transport vehicle 9 to the second drive mechanism 5, and at the same time, the mud discharge component 8 pushes the previous transport vehicle 9 onto the second drive mechanism 5, and the transport vehicle 9 is separated from the jacking pipe under the drive of the second drive mechanism 5;

[0066] S5: The end of the second jacking pipe is connected to the tail of the first jacking pipe, and the first driving mechanism 4 and the second driving mechanism 5 are sequentially installed inside the second jacking pipe, and the transport vehicle 9 is kept passing, and the above steps are repeated.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pipe jacking mud discharge system, comprising a plurality of pipe bodies (1) connected end to end, wherein a cutting disc (2) and a screw conveyor (3) are provided on the pipe body (1) at the head end, characterized in that: A first driving mechanism (4) facing the screw conveyor (3) is provided inside the tube body (1), a transport vehicle (9) is provided on the first driving mechanism (4), a second driving mechanism (5) is also provided inside the tube body (1), and a moving component (6) for exchanging the transport vehicle (9) is provided between the first driving mechanism (4) and the second driving mechanism (5) at one end close to the screw conveyor (3); The first driving mechanism (4) comprises a first guide rail (41) arranged inside the tube body (1) and parallel to the axis of the tube body (1); a guide groove (411) parallel to the axis of the tube body (1) is formed on the upper end surface of the first guide rail (41); the lower end of the transport vehicle (9) is inserted into the guide groove (411); a first conveyor belt (42) for conveying the transport vehicle (9) is provided at the bottom of the guide groove (411); rotating rollers (43) rotatably connected to the first guide rail (41) are provided at both ends of the first conveyor belt (42); and a driving member (44) for driving the rotating rollers (43) to rotate is provided between adjacent rotating rollers (43); A first connecting portion (412) is provided at one end of the first guide rail (41), and a second connecting portion (413) is provided at the other end, and the first connecting portion (412) and the second connecting portion (413) between adjacent first guide rails (41) are clamped together; The second driving mechanism (5) has the same structure as the first driving mechanism (4) and is arranged side by side. The second driving mechanism (5) comprises a second guide rail (51) parallel to the first guide rail (41). A connecting block (52) connecting the first guide rail (41) and the second guide rail (51) is provided between the two. A fixing rod (53) is threadedly connected to the connecting block (52). One end of the fixing rod (53) away from the connecting block (52) abuts against the inner wall of the tube body (1). The upper end surface of the first conveyor belt (42) is arranged to be wavy, and the lower end surface of the transport vehicle (9) is plug-fitted with the upper end surface of the first conveyor belt (42); The moving assembly (6) comprises a support frame (7) arranged below the screw conveyor (3); a conveyor belt (61) is arranged on the support frame (7); the conveyor belt (61) connects the first guide rail (41) and the second guide rail (51); a plurality of guide rails (62) are arranged on the conveyor belt (61) and are evenly distributed and can be opposite to the guide groove (411); and a mud discharge assembly (8) is also arranged on the support frame (7) to drive the transport vehicle (9) to separate from the conveyor belt (61) and onto the second guide rail (51); The mud discharge assembly (8) is located on a side of the conveyor belt (61) away from the second guide rail (51), and comprises a push rod (81) parallel to the second guide rail (51) and slidably connected to the support frame (7); an eccentric wheel (82) for driving the push rod (81) to reciprocate is provided at one end of the push rod (81) away from the second guide rail (51); the eccentric wheel (82) is rotatably connected to the support frame (7); and a driving motor (83) for driving the eccentric wheel (82) to rotate is provided on the support frame (7).

2. A jacking pipe mud removal system according to claim 1, characterized in that: The moving assembly (6) and the mud discharge assembly (8) are both electrically connected to a control assembly (73), wherein the control assembly (73) comprises a controller for controlling the opening and closing of a drive motor (83) and a conveyor belt (61), and the controller is also electrically connected to a sensor for detecting the position of a transport vehicle (9).

3. A jacking pipe mud removal system according to claim 2, characterized in that: A feed hopper (71) is provided above the conveyor belt, one end of the feed hopper (71) is connected to the screw conveyor (3), and the other end faces one end of the conveyor belt (61) close to the first guide rail (41). A storage bin (72) for storing sand is provided on a side of the feed hopper (71) close to the first guide rail (41). A discharge port (721) facing the transport vehicle (9) is provided below the storage bin (72). A rotating shaft (722) is rotatably connected in the discharge port (721). The rotating shaft (722) is provided with a plurality of evenly distributed partition plates (724). The side of the partition plate (724) away from the rotating shaft (722) abuts against the side wall of the discharge port (721). A rubber block (723) is provided at the end of the rotating shaft (722), and the side wall of the rubber block (723) abuts against the upper end surface of the frame of the transport vehicle (9).

4. A pipe jacking construction method using the pipe jacking mud removal system according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: The cutting disc (2) and the screw conveyor (3) are installed at the end of a jacking pipe; S2: a feed hopper (71), a first drive mechanism (4), a second drive mechanism (5) and a moving assembly (6) are installed inside the top pipe; S3: the first driving mechanism (4) drives the transport vehicle (9) to the bottom of the feed hopper (71), and the transport vehicle (9) collects soil; S4: the moving assembly (6) drives the transport vehicle (9) to approach the second driving mechanism (5), and at the same time the mud discharge assembly (8) pushes the previous transport vehicle (9) onto the second driving mechanism (5), and the transport vehicle (9) is separated from the jacking pipe under the drive of the second driving mechanism (5); S5: The end of the second jacking pipe is connected to the tail of the first jacking pipe, and the first driving mechanism (4) and the second driving mechanism (5) are sequentially installed inside the second jacking pipe to ensure the passage of the transport vehicle (9).

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