Rectangular high-precision deviation-rectifying soil body digging and cutting type pipe jacking machine

Abstract

The invention provides a rectangular high-precision deviation-rectifying soil body digging and cutting type pipe jacking machine. The rectangular high-precision deviation-rectifying soil body digging and cutting type pipe jacking machine comprises a shield shell, a deviation rectifying device, a connecting device, a driving device, a soil digging device, a soil cutting device and a conveying device. When the rectangular electric power tunnel pipe jacking device is used for pipe jacking of a rectangular electric power tunnel, the soil body digging speed can be controlled through the soil digging device, and the ground surface settlement problem caused by soil body overexcavation is solved; the problem that the top pipe meets obstacles such as tree roots and large boulders can be solved through the soil cutting device; the deviation rectifying device can solve the problem of deviation in the jacking direction, can meet the technical requirements of rectangular electric power tunnel pipe jacking, and is used for pipe jacking engineering in China.

Description

Technical Field

[0001] This invention belongs to the field of power tunnel engineering technology, and in particular relates to a rectangular high-precision soil excavation and jacking machine with self-correcting capability. Background Technology

[0002] With rapid urban development, the demand for electricity is constantly increasing. Currently, urban power grid construction faces a contradiction between the rapid growth of power load and the relative scarcity of overhead power transmission channels. Underground cable laying can effectively save land resources and is beneficial to overall urban planning; power tunnels have become an important component of my country's urban power grid. Rectangular power tunnels have high space utilization and are currently widely used for power and communication connections between urban substations. They are typically constructed using open-cut or pipe jacking methods. Pipe jacking offers significant advantages such as not affecting ground traffic, reducing construction land area, and shortening the construction period.

[0003] Traditional pipe jacking technology involves directly jacking the pipe into the ground. Because the pipe tip is in direct contact with the soil, it easily causes surface uplift, high jacking resistance, and difficulty passing through obstacles. Newer rectangular pipe jacking technology, by installing a jacking machine at the pipe tip, greatly improves construction efficiency. However, existing rectangular tunnel jacking machines are mostly suitable for large tunnels such as subways, and are significantly different from the requirements of power tunnels, which have shallow overburden, small pipe size, short jacking distance, and low investment, making them unsuitable.

[0004] In order to meet the technical requirements of rectangular power tunnel jacking, solve the problems of ground subsidence and heave caused by obstacles encountered during the jacking process, and the deviation problem during the steel pipe jacking process, and at the same time have good soil excavation and soil removal performance, and can carry out jacking work efficiently, it is necessary to invent a new type of rectangular high-precision pipe jacking machine. Summary of the Invention

[0005] This invention aims to solve the problems of ground subsidence and uplift caused by obstacles encountered during pipe jacking, as well as the deviation problem during steel pipe jacking, to meet the technical requirements of rectangular power tunnel pipe jacking engineering, thereby providing a rectangular high-precision soil excavation pipe jacking machine with the ability to correct deviation.

[0006] To achieve the above-mentioned objectives, this invention provides a rectangular high-precision soil-digging pipe jacking machine with self-correcting capabilities, comprising a shield, a self-correcting device, a connecting device, a driving device, a digging device, a cutting device, and a conveying device.

[0007] Furthermore, the shield shell includes a main shield shell 1 and a guide plate 2. The main shield shell 1 is a rectangular steel pipe with arc-shaped front ends on the left, right, and lower sides of the pipe. The upper side of the pipe retains its original shape, and the front end steel plate serves as advanced support. There is one grouting hole in the middle of each of the four walls of the pipe, for a total of four holes. There is one rectangular pre-reserved opening for installing a correction device in each of the four walls of the pipe, for a total of four holes. The wall thickness of the steel pipe should be selected according to the diameter of the steel pipe, and the thickness should be greater than 12mm and less than 20mm. The guide plate 2 is a curved steel plate with a wall thickness greater than 5mm. It matches the arc shape at the front end of the main shield shell 1 and gradually rises from the outside to the inside. The inclination angle of the curved surface is between 30° and 60°. The guide plate 2 is embedded in the front end of the main shield shell 1.

[0008] Furthermore, the correction device includes a steel frame 3, a support plate 4, a jack 5, a hinge 6, a wedge-shaped steel block 7, and a fixed hinge support 8. The steel frame 3 is fixed to both sides of the rectangular reserved opening of the main shield shell 1; the support plate 4 spans the rectangular reserved opening and is fixed to the steel frame 3; the jack 5 is fixed to the support plate 4; the wedge-shaped steel block 7 is set in the rectangular reserved opening, connected to the main shield shell 1 through the hinge 6, and can rotate around the hinge 6; the fixed hinge support 8 is fixed to the wedge-shaped steel block 7, and its rotation function ensures that the load applied by the jack always acts on the middle of the wedge-shaped steel block 7; when it is necessary to correct the steel pipe, hydraulic pressure is applied to the jack 5 to push the fixed hinge support 8, while simultaneously driving the wedge-shaped steel block 7 to rotate and move outward around the hinge 6, squeezing the outer soil, thereby achieving the effect of correcting the steel pipe.

[0009] Furthermore, the connecting device includes a steel plate 9 and bolts 10. The steel plate 9 is a rectangular steel plate, half of which is welded to the middle of each side of the rear end of the main shield shell 1, and the other half is reserved, with two embedded bolt holes in the middle. The bolts 10 are high-strength bolts that can be embedded into the bolt holes reserved in the rectangular steel plate 9. Bolt holes are set at the same positions as the steel pipe that needs to be pulled at the rear, and the pipe jacking machine cutter head and the pulled steel pipe are connected by the bolts 10.

[0010] Furthermore, the drive device includes an engine 11, a vertical drive rod 12, a horizontal drive rod 13, and a conversion gear 14. The engine 11 is connected to the cross-shaped steel frame 15. Simultaneously, the engine 11 is connected to the vertical drive rod 12 and transmits power to the horizontal drive rod 13 through the vertical drive rod 12; the horizontal drive rod 13 transmits power to the conversion gear 14 through the horizontal drive rod 13; and the conversion gear 14 transmits power to the cutter drive rod 19 through the conversion gear 14, thereby driving the soil cutting device.

[0011] Furthermore, the excavating device includes a cross-shaped steel frame 15, cutting blades 16, a leading blade 17, and a fishtail blade 18. Various blades are arranged on the front end face of the cross-shaped steel frame 15. Cutting blades 14 are symmetrically arranged on both sides of one side; the fishtail blade 16 is arranged in the middle; and on the other side, cutting blades 14 and leading blades 15 are arranged at intervals from the arrangement of cutting blades 14 on one side. The cutting blades 14 and leading blades 15 on both sides are arranged alternately, and the leading blade 15 is positioned further forward than the cutting blades 14. When setting up the excavating device, the longitudinal distance between the front end of the fishtail blade 16 and the chain 20 should be between 15-30 cm.

[0012] Furthermore, the soil cutting device includes a cutter drive rod 19, a driven rod 20, a bearing 21, a high-pressure injection hole 22, a gear 23, a conical cap 24, a conical protrusion 25, a chain 26, and a cutter 27. Two cutter drive rods 19 are arranged at the upper part of the pipe jacking machine cutter head, and two driven rods 20 are arranged at the lower part of the cutter head, rotating subordinately in conjunction with the fixed bearing 21. The end of the cutter drive rod 19 is connected to the gear 23, driving the gear 23 to rotate. A conical cap 24 is provided at the end of the gear 23. Around the center of the conical cap 24, four conical protrusions 25 are provided in the middle of the conical cap 24. The chain 26 is arranged outside the gear 23, and passes through... The rotation of gear 23 drives the chain 26 to rotate; four gears 23 are fixed at the four corners of the rectangular steel tube, so that the chain 26 maintains a rectangular shape; the cutter 27 is set on the outside of the chain 26, and the rotation of the chain 26 drives the cutter 27 to cut the soil and obstacles; the cutter drive rod 19 and the driven rod 20 are both hollow steel tubes; and each has two high-pressure injection holes 22 at the front end, which are respectively aligned with the two corners on the outside of the gear 23 and are arranged at an angle; during the soil cutting process, high-pressure gas is delivered through the cutter drive rod 19 and the driven rod 20, and the gas is sprayed out through the high-pressure injection holes 22 to the meshing point of the gear 23 and the chain 26.

[0013] Furthermore, the conveying device includes an upper air supply pipe 28, a lower air supply pipe 29, a conveying rod 30, a conveying connector 31, and a grouting pipe 32. The conveying connector 31 and the conveying rod 30 are dual-channel steel pipes. High-pressure gas and drag-reducing slurry are input to the conveying rod 30 through the conveying connector 31. The drag-reducing slurry can be transferred to the grouting pipe 32 through the conveying rod 30. There are four grouting pipes 32, which are respectively arranged at the grouting hole positions of the main shield shell 1. The grouting pipes 32 are used to inject grout into the outer wall of the main shield shell 1 to reduce drag. High-pressure gas can be transferred to the upper air supply pipe 28 and the lower air supply pipe 29 through the conveying rod 30. The high-pressure gas can be transferred to the cutter drive rod 19 and the driven rod 20 through the upper air supply pipe 28 and the lower air supply pipe 29, and then ejected through the high-pressure injection hole 22.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] When using this invention patent for pipe jacking in rectangular power tunnels, the excavation speed of the soil can be controlled by the excavation device, which solves the problem of surface settlement caused by over-excavation; the soil cutting device can solve the problem of encountering obstacles such as tree roots and large boulders during pipe jacking; and the deviation correction device can solve the problem of deviation in the jacking direction. It can meet the technical requirements of rectangular power tunnel pipe jacking and be used in pipe jacking projects in my country. Attached Figure Description

[0016] Figure 1 Overall schematic diagram of the pipe jacking machine;

[0017] Figure 2 Main view of the pipe jacking machine;

[0018] Figure 3 Side view of the pipe jacking machine;

[0019] Figure 4 Schematic diagram of the shield;

[0020] Figure 5 Schematic diagram of the correction device;

[0021] Figure 6 Schematic diagram of drive unit and excavation unit;

[0022] Figure 7 Schematic diagram of the soil cutting device;

[0023] Figure 8 Detailed schematic diagram of the soil cutting device;

[0024] Figure 9 Schematic diagram of the conveyor device.

[0025] The components include: 1. Main shield shell; 2. Guide plate; 3. Steel frame; 4. Support plate; 5. Jack; 6. Hinge; 7. Wedge-shaped steel block; 8. Fixed hinge support; 9. Connecting steel plate; 10. Bolt; 11. Engine; 12. Vertical drive rod; 13. Horizontal drive rod; 14. Conversion gear; 15. Cross-shaped steel frame; 16. Cutting blade; 17. Leading blade; 18. Fish tail blade; 19. Cutting blade drive rod; 20. Driven rod; 21. Bearing; 22. High-pressure injection hole; 23. Gear; 24. Conical cap; 25. Conical protrusion; 26. Chain; 27. Cutting blade; 28. Upper air supply pipe; 29. ​​Lower air supply pipe; 30. Conveyor rod; 31. Conveyor connector; 32. Grouting pipe. Detailed Implementation

[0026] To better understand the purpose, structure, and function of this invention, the following detailed description of a rectangular high-precision soil excavation pipe jacking machine with corrective deviation capability is provided in conjunction with the accompanying drawings.

[0027] Reference Figures 1 to 9A rectangular high-precision, self-correcting soil excavation pipe jacking machine consists of a main shield shell 1, a guide plate 2, a steel frame 3, a support plate 4, a jack 5, a hinge 6, a wedge-shaped steel block 7, a fixed hinge support 8, a connecting steel plate 9, bolts 10, an engine 11, a vertical drive rod 12, a horizontal drive rod 13, a conversion gear 14, a cross-shaped steel frame 15, a cutting blade 16, a leading blade 17, a fishtail blade 18, a cutting blade drive rod 19, a driven rod 20, a bearing 21, a high-pressure injection hole 22, a gear 23, a conical cap 24, a conical protrusion 25, a chain 26, a cutting blade 27, an upper air supply pipe 28, a lower air supply pipe 29, a transmission rod 30, a transmission joint 31, and a grouting pipe 32.

[0028] The shield shell consists of a main shield shell 1 and a guide plate 2. The main shield shell 1 is a rectangular steel pipe with curved front ends on the left, right, and lower sides to reduce the direct contact area between the steel pipe and the soil during jacking, thus reducing jacking resistance. The upper side of the steel pipe retains its original shape, and the front steel plate serves as advance support to reduce surface settlement during excavation. Each of the four walls of the steel pipe has one grouting hole in the middle, for a total of four holes. This avoids the drawback of drilling holes in the steel pipe in traditional technology, which would damage its integrity, and serves to reduce resistance during jacking. Each of the four walls of the steel pipe has one rectangular pre-reserved opening for installing a correction device, for a total of four holes. The wall thickness of the steel pipe should be selected according to the diameter of the steel pipe, and should preferably be greater than 12mm and less than 20mm. The guide plate 2 is a curved steel plate with a wall thickness greater than 5mm. It is matched with the arc shape at the front end of the main shield shell 1 and gradually rises from the outside to the inside. The inclination angle of the curved surface should be between 30° and 60°. The guide plate 2 is embedded in the front end of the main shield shell 1 and serves to guide the soil into the excavation device.

[0029] The correction device consists of a steel frame 3, a support plate 4, a jack 5, a hinge 6, a wedge-shaped steel block 7, and a fixed hinge support 8. The steel frame 3 is fixed to both sides of the rectangular pre-reserved opening of the main shield shell 1; the support plate 4 spans the rectangular pre-reserved opening and is fixed to the steel frame 3; the jack 5 is fixed to the support plate 4, with the output end of the jack facing the fixed hinge support 8; the wedge-shaped steel block 7 is set in the rectangular pre-reserved opening, connected to the main shield shell 1 through the hinge 6, and can rotate around the hinge 6; the fixed hinge support 8 is fixed to the wedge-shaped steel block 7, and its rotation ensures that the load applied by the jack always acts on the middle of the wedge-shaped steel block 7; when it is necessary to correct the steel pipe, hydraulic pressure is applied to the jack 5 to push the fixed hinge support 8, while simultaneously driving the wedge-shaped steel block 7 to rotate and move outward around the hinge 6, squeezing the outer soil, thereby achieving the effect of correcting the steel pipe.

[0030] The connecting device consists of steel plate 9 and bolts 10. Steel plate 9 is a rectangular steel plate, half of which is welded to the middle of each side of the rear end of the main shield shell 1, and the other half is reserved, with two embedded bolt holes in the middle. Bolts 10 are high-strength bolts that can be embedded into the reserved bolt holes in the rectangular steel plate 9. Bolt holes are set at the same positions as the steel pipe to be pulled, and the pipe jacking machine cutter head is connected to the pulling steel pipe through bolts 10.

[0031] The drive unit consists of an engine 11, a vertical drive rod 12, a horizontal drive rod 13, and a conversion gear 14. The engine 11 is connected to the cross-shaped steel frame 15, providing it with rotational power; simultaneously, the engine 11 is connected to the vertical drive rod 12, and transmits power to the horizontal drive rod 13 through the vertical drive rod 12; the horizontal drive rod 13 transmits power to the conversion gear 14 through the horizontal drive rod 13; and the conversion gear 14 transmits power to the cutter drive rod 19 through the conversion gear 14, thereby driving the soil cutting device.

[0032] The excavation device consists of a cross-shaped steel frame 15, cutting blades 16, a leading blade 17, and a fishtail blade 18. Various cutting tools are installed on the front face of the cross-shaped steel frame 15. On one side, cutting blades 16 are symmetrically arranged on both sides to cut the soil at fixed positions; the fishtail blade 18 is located in the middle to excavate and mix the core soil. On the other side, cutting blades 16 and leading blades 17 are alternately arranged to cut the soil at different positions. The cutting blades 16 and leading blades 17 on both sides are arranged alternately, with the leading blade 17 positioned ahead of the cutting blades 16 to break up the soil first, improving cutting efficiency. When setting up the excavation device, the longitudinal distance between the front end of the fishtail blade 18 and the chain 26 should be between 15-30 cm to improve the cutting and excavation effect, while strictly ensuring that there is no over-excavation or under-excavation.

[0033] The soil cutting device consists of a cutter drive rod 19, a driven rod 20, a bearing 21, a high-pressure injection hole 22, a gear 23, a conical cap 24, a conical protrusion 25, a chain 26, and a cutter 27.

[0034] Two cutting drive rods 19 are installed at the upper part of the pipe jacking machine cutter head, which also serve as the driving force. Two driven rods 20 are installed at the lower part of the pipe jacking machine cutter head, which, together with the fixed bearings 21, serve as subordinate rotational rods. The ends of the cutting drive rods 19 are connected to gears 23, which drive the gears 23 to rotate. A conical cap 24 is installed at the end of the gear 23, which serves to guide the soil. Around the center of the conical cap 24, four conical protrusions 25 are installed in the middle of the conical cap 24, which serve to cut and mix the soil, reducing the resistance of the soil layer to the cutting drive rods 19. A chain 26 is installed outside the gears 23, which drive the gears 23 to rotate. The four gears 23 are fixed at the four corners of the rectangular steel pipe, so that the chain 26 maintains its rectangular shape. The cutter 27 is installed outside the chain 26. The rotation of the chain 26 drives the cutter 27 to cut the soil and obstacles, so that they cannot hinder the pipe jacking process and ensure the smooth progress of the pipe jacking project. Both the cutter drive rod 19 and the driven rod 20 are hollow steel pipes; and each has two high-pressure injection holes 22 at its front end, which are arranged at an angle, aligning with the two outer corners of the gear 23. During the cutting process, high-pressure gas is supplied through the cutter drive rod 19 and the driven rod 20, and the gas is ejected through the high-pressure injection holes 22 to the engagement point between the gear 23 and the chain 26, dispersing the sand and gravel there to prevent them from jamming the chain and ensuring the normal operation of the cutting device.

[0035] The conveying device consists of an upper air supply pipe 28, a lower air supply pipe 29, a conveying rod 30, a conveying connector 31, and a grouting pipe 32. The conveying connector 31 and the conveying rod 30 are double-channel steel pipes. There are a total of 4 conveying rods 30, which are connected in an "U" shape and arranged inside the shield shell. It is connected to the conveyor connector 31, through which high-pressure gas and drag-reducing mud can be input to the conveyor rod 30; there are 4 grouting pipes 32, one end of which is connected to the conveyor rod 30 and the other end is connected to the grouting hole of the main shield 1. The drag-reducing mud can be transmitted to the grouting pipe 32 through the conveyor rod 30, and the drag reduction of the main shield 1 can be achieved by grouting into the outer wall of the main shield 1 through the grouting pipe 32; the conveyor rod 30 is connected to the upper air supply pipe 28 and the lower air supply pipe 29 at the four corners respectively. The high-pressure gas can be transmitted to the upper air supply pipe 28 and the lower air supply pipe 29 respectively through the conveyor rod 30. The high-pressure gas can be transmitted to the cutter drive rod 19 and the driven rod 20 respectively through the upper air supply pipe 28 and the lower air supply pipe 29, and then sprayed out through the high-pressure injection hole 22.

Claims

1. A rectangular, high-precision, self-correcting soil excavation pipe jacking machine, characterized in that: It includes a shield, a correction device, a connecting device, a drive device, a digging device, a cutting device, and a conveying device.

2. The rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The shield shell includes a main shield shell 1 and a guide plate 2. The main shield shell 1 is a rectangular steel pipe with arc-shaped front ends on the left, right, and lower sides of the pipe. The upper side of the pipe retains its original shape, and the front end steel plate serves as advanced support. There is one grouting hole in the middle of each of the four walls of the pipe, for a total of four holes. There is also one rectangular pre-reserved opening for installing a correction device in each of the four walls of the pipe, for a total of four holes. The wall thickness of the steel pipe should be selected according to the diameter of the steel pipe, and the thickness should be greater than 12mm and less than 20mm. The guide plate 2 is a curved steel plate with a wall thickness greater than 5mm. It matches the arc shape at the front end of the main shield shell 1 and gradually rises from the outside to the inside. The inclination angle of the curved surface is between 30° and 60°. The guide plate 2 is embedded in the front end of the main shield shell 1.

3. The rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The correction device includes a steel frame 3, a support plate 4, a jack 5, a hinge 6, a wedge-shaped steel block 7, and a fixed hinge support 8. The steel frame 3 is fixed to both sides of the rectangular reserved opening of the main shield shell 1; the support plate 4 spans the rectangular reserved opening and is fixed to the steel frame 3; the jack 5 is fixed to the support plate 4; the wedge-shaped steel block 7 is set in the rectangular reserved opening, connected to the main shield shell 1 through the hinge 6, and can rotate around the hinge 6; the fixed hinge support 8 is fixed to the wedge-shaped steel block 7, and its rotation function ensures that the load applied by the jack always acts on the middle of the wedge-shaped steel block 7; when it is necessary to correct the steel pipe, hydraulic pressure is applied to the jack 5 to push the fixed hinge support 8, and at the same time, the wedge-shaped steel block 7 rotates and moves outward around the hinge 6, squeezing the outer soil, thereby achieving the effect of correcting the steel pipe.

4. A rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The connecting device includes a steel plate 9 and bolts 10. The steel plate 9 is a rectangular steel plate, half of which is welded to the middle of each side of the rear end of the main shield shell 1, and the other half is reserved, with two embedded bolt holes in the middle. The bolts 10 are high-strength bolts that can be embedded into the bolt holes reserved in the rectangular steel plate 9. Bolt holes are set at the same positions as the steel pipe that needs to be pulled at the rear. The pipe jacking machine cutter head and the pulled steel pipe are connected by the bolts 10.

5. A rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The drive unit includes an engine 11, a vertical drive rod 12, a horizontal drive rod 13, and a conversion gear 14. The engine 11 is connected to a cross-shaped steel frame 15. Simultaneously, the engine 11 is connected to the vertical drive rod 12 and transmits power to the horizontal drive rod 13 through the vertical drive rod 12. The power is then transmitted to the conversion gear 14 through the horizontal drive rod 13. Finally, the power is transmitted to the cutter drive rod 19 through the conversion gear 14, thereby driving the soil cutting device.

6. A rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The excavating device includes a cross-shaped steel frame 15, cutting blades 16, a leading blade 17, and a fishtail blade 18. Various cutting tools are arranged on the front face of the cross-shaped steel frame 15. Cutting blades 14 are symmetrically arranged on both sides of one side; the fishtail blade 16 is arranged in the middle; and on the other side, cutting blades 14 and leading blades 15 are arranged at intervals from the arrangement of cutting blades 14 on the other side. The cutting blades 14 and leading blades 15 on both sides are arranged alternately, and the leading blade 15 is positioned further forward than the cutting blades 14. When setting up the excavating device, the longitudinal distance between the front end of the fishtail blade 16 and the chain 20 should be between 15-30 cm.

7. A rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The soil cutting device includes a cutter drive rod 19, a driven rod 20, a bearing 21, a high-pressure injection hole 22, a gear 23, a conical cap 24, a conical protrusion 25, a chain 26, and a cutter 27. Two cutter drive rods 19 are located at the upper part of the pipe jacking machine cutter head, and two driven rods 20 are located at the lower part of the cutter head, rotating in conjunction with the fixed bearing 21. The end of the cutter drive rod 19 is connected to the gear 23, driving the gear 23 to rotate. A conical cap 24 is located at the end of the gear 23. Around the center of the conical cap 24, four conical protrusions 25 are located in the middle of the conical cap 24. The chain 26 is located outside the gear 23, and passes through the gear 27.

3. Rotation drives the chain 26 to rotate; 4 gears 23 are fixed at the four corners of the rectangular steel pipe, so that the chain 26 maintains a rectangular shape; the cutter 27 is set on the outside of the chain 26, and the rotation of the chain 26 drives the cutter 27 to cut the soil and obstacles; the cutter drive rod 19 and the driven rod 20 are both hollow steel pipes; and each has two high-pressure injection holes 22 at the front end, which are arranged at an angle to the two corners on the outside of the gear 23; during the cutting process, high-pressure gas is delivered through the cutter drive rod 19 and the driven rod 20, and the gas is sprayed out through the high-pressure injection holes 22 to the meshing point of the gear 23 and the chain 26.

8. A rectangular high-precision, self-correcting soil excavation pipe jacking machine according to claim 1, characterized in that: The conveying device includes an upper air supply pipe 28, a lower air supply pipe 29, a conveying rod 30, a conveying connector 31, and a grouting pipe 32. The conveying connector 31 and the conveying rod 30 are dual-channel steel pipes. High-pressure gas and drag-reducing slurry are input to the conveying rod 30 through the conveying connector 31. The drag-reducing slurry can be transferred to the grouting pipes 32 through the conveying rod 30. There are four grouting pipes 32, which are respectively arranged at the grouting holes of the main shield shell 1. The grouting pipes 32 are used to inject grout into the outer wall of the main shield shell 1 to reduce drag. High-pressure gas can be transferred to the upper air supply pipe 28 and the lower air supply pipe 29 through the conveying rod 30. The high-pressure gas can be transferred to the cutter drive rod 19 and the driven rod 20 through the upper air supply pipe 28 and the lower air supply pipe 29, and then ejected through the high-pressure injection hole 22.

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