Hydraulic drive sectional type miniature pipe jacking machine suitable for compound stratum

Abstract

The invention discloses a hydraulic drive sectional type miniature pipe jacking machine suitable for a composite stratum, and relates to the field of miniature pipe jacking machines for the composite stratum. Comprising a first section, a second section and a third section which are connected in a pluggable mode, the first section mainly plays a basic role in pipe jacking construction, the second section mainly plays a role in connection of the front section and the rear section and conversion of a muddy water system, and the third section is responsible for control over water inlet and mud discharge and posture adjustment of the pipe jacking machine. The muddy water system is sequentially divided into a first muddy water mechanism, a second muddy water mechanism and a third muddy water mechanism according to a sectional structure, the first muddy water mechanism, the second muddy water mechanism and the third muddy water mechanism are integrated in a first section, a second section and a third section respectively, the first muddy water mechanism is used for muddy water supply and preliminary mixing in the pipe jacking construction process, and the second muddy water mechanism achieves the conversion function of the muddy water system. And the third muddy water mechanism is used for supplying and discharging muddy water. The problems that the size is large, the primary crushing effect is poor, the secondary crushing function is lacked, and a cement system cannot adapt to complex stratums are solved.

Description

Technical Field

[0001] The invention belongs to the field of composite formation micro pipe jacking machines, and in particular relates to a liquid-driven segmented micro pipe jacking machine suitable for composite formations. Background Art

[0002] With the acceleration of my country's urbanization process, the demand for the development and utilization of underground space resources is increasing. In particular, in the construction of urban water supply, gas supply, power supply, communications and other infrastructure, small-diameter pipe jacking construction is particularly important. However, when constructing small-diameter pipe jacking underground scenes, especially for complex strata with complex and changeable geological conditions, there are often many challenges. At present, the micro-pipe jacking machines used in China have many shortcomings when dealing with complex strata.

[0003] 1. Economy and construction adaptability: The existing pipe jacking machine and the working well it needs are too large. Large-sized equipment not only increases construction costs, but also prolongs the production cycle, affecting the overall progress of the project. Especially in small urban spaces or complex environments, large-sized equipment is difficult to adapt to, which greatly limits the possibility of construction.

[0004] 2. Crushing effect: The existing pipe jacking machine has obvious deficiencies in crushing effect, which is mainly reflected in the poor primary crushing effect and the lack of secondary crushing function. Since the cross-sectional area of ​​the cutter disc is too small, it is impossible to install a sufficient number and size of roller cutters, resulting in poor primary crushing effect and inability to effectively cope with complex formations. At the same time, the lack of secondary crushing function makes construction difficult when facing complex formations such as mud and pebble layers, increasing the difficulty and risk of construction. This lack of adaptability to complex formations seriously restricts the application of existing pipe jacking machines under a wider range of geological conditions.

[0005] 3. Performance and operation: The various valves in the cement system are large in size, and cannot realize the mutual switching of front water supply, rear water supply and mud discharge required for composite stratum jacking, which limits the flexible response ability of the jacking machine in complex strata and affects the construction efficiency and safety. In addition, the motors, reducers, and deviation correction cylinders currently used are too large to be installed in the jacking machine, resulting in poor compactness of the overall structure of the equipment and complex operation, which not only occupies valuable construction space, but also increases the failure rate and maintenance difficulty.

[0006] In summary, the existing pipe jacking machines have limitations in many aspects and cannot meet the construction needs of the complex and changeable strata and narrow spaces in China. Therefore, it is particularly important to develop a micro pipe jacking machine suitable for composite strata to achieve more efficient and economical construction results. Summary of the invention

[0007] The present invention provides a liquid-driven segmented micro pipe jacking machine suitable for composite formations, which solves the problems of large size, poor primary crushing effect, lack of secondary crushing function and the inability of the cement system to adapt to complex formations, reduces the downhole size, improves the crushing effect, optimizes the cement system, and greatly improves the adaptability to composite formations and narrow spaces.

[0008] The technical solutions used in the present invention are as follows:

[0009] A liquid-driven segmented micro pipe jacking machine suitable for composite formations comprises a first section, a second section and a third section, wherein the first section, the second section and the third section are connected by a plug-in type, wherein:

[0010] The first section comprises a cutterhead assembly, a mud bin assembly, a power system, a front barrel assembly and a first rear barrel assembly in sequence, the cutterhead assembly is located at the front end of the pipe jacking machine, the cutterhead assembly is connected to the mud bin assembly by plug-in, the power system is movably connected to the cutterhead assembly, the power system is connected to the mud bin assembly and the front barrel assembly by plug-in, and the first rear barrel assembly is movably connected to the front barrel assembly;

[0011] The second section includes a second rear barrel assembly, and the second rear barrel assembly is connected to the first rear barrel assembly by plug-in connection;

[0012] The third section includes a third rear barrel assembly and a fourth rear barrel assembly, wherein the third rear barrel assembly is connected to the second rear barrel assembly by plug-in connection, and the fourth rear barrel assembly is fixedly connected to the third rear barrel assembly.

[0013] It also includes a mud water system, which is divided into a first mud water mechanism, a second mud water mechanism and a third mud water mechanism in sequence according to the segmented structure, and is integrated in the first section, the second section and the third section respectively.

[0014] Furthermore, the cutter disc assembly includes a cutter disc surface, on which a plurality of edge toothed hobs, front toothed hobs and single-edged scrapers are arranged, the outer edge of the cutter disc surface is surrounded by a cutter disc outer ring rib, a plurality of wear-resistant guide plates are fixedly connected to the outer edge surface of the cutter disc outer ring rib, a twist leg is fixedly connected to the cutter disc surface, the other end of the twist leg is fixedly connected to the cutter disc cone sleeve, the cutter disc cone sleeve is coaxial with the cutter disc surface, the cutter disc cone sleeve is connected to the power system, a plurality of crushing teeth are fixedly connected to the outer circular surface of the cutter disc cone sleeve, a spiral mud guide plate is fixedly connected to the conical circular surface of the cutter disc cone sleeve, the spiral mud guide plate rises in a spiral manner, the spiral mud guide plate has the same taper as the cutter disc cone sleeve, and one end of the spiral mud guide plate extends into the mud bin assembly.

[0015] Furthermore, the mud silo assembly includes a mud silo cylinder and a mud silo connecting flange, a plurality of mud silo horn cones are arranged in the mud silo cylinder, the plurality of mud silo horn cones are fixedly connected to a corresponding number of flange fixed cone crushing teeth, a plurality of fixed cone crushing ribs are distributed and fixedly connected on the inner surface of the mud silo horn cone, one end of the mud silo connecting flange is fixedly connected to the mud silo cylinder, and the other end is connected to the power system.

[0016] Furthermore, the power system includes a power main shaft, which is located at the front end of the power system. The power main shaft is connected with a mud sealing cover, a power connecting flange, a power housing, a reducer and a hydraulic motor in sequence. One end of the power main shaft is movably connected to the cutter disc assembly, one end of the power connecting flange is connected to the mud bin assembly, and the other end is connected to the front barrel assembly. A mud discharge port, a front water supply port and a rear water supply port are distributed on the power connecting flange, and bearings and a main shaft are arranged inside the power housing.

[0017] Furthermore, the front barrel assembly includes a front barrel connecting flange and a front barrel body, wherein the front barrel connecting flange is installed at one end of the front barrel body, the front barrel connecting flange is connected to the power system, a plurality of front barrel deviation correcting supports are installed inside the front barrel body, and a limited rotation seat is fixedly connected to the upper end of the front barrel body;

[0018] The first rear barrel assembly includes a first rear barrel body, one end of the first rear barrel body is connected to the front barrel body, a limited rotation pin is fixedly connected to the upper front end of the first rear barrel body, the limited rotation pin cooperates with the limited rotation seat, a plurality of first rear barrel correction supports are fixedly connected to the inner wall of the first rear barrel body, support ribs are respectively welded to the rear sides of the plurality of first rear barrel correction supports, and the first rear barrel correction supports extend out of the first rear barrel body.

[0019] Furthermore, it also includes a correction cylinder, a plurality of which are arranged in the front barrel assembly and the first rear barrel assembly, one end of the correction cylinder is fixedly connected to the front barrel correction support, and the other end of the correction cylinder is fixedly connected to the first rear barrel correction support.

[0020] Further, the second rear barrel assembly comprises a second rear barrel body, a second rear barrel front flange and a second rear barrel rear flange, the second rear barrel front flange is fixedly connected to the second rear barrel body, the second rear barrel rear flange is located at the end of the second rear barrel body, and the second rear barrel rear flange is connected to the third rear barrel assembly;

[0021] The third rear barrel assembly includes a third rear barrel front flange, a third rear barrel body and a third rear barrel rear flange, the third rear barrel front flange is connected to one end of the third rear barrel body, the third rear barrel rear flange is connected to the other end of the third rear barrel body, the third rear barrel front flange is connected to the second rear barrel assembly, an electrical box assembly and a micro valve group assembly are installed inside the third rear barrel body, the electrical box assembly is fixed to the upper top inside the third rear barrel body, and a camera assembly is fixedly installed on one side of the third rear barrel front flange.

[0022] Furthermore, the fourth rear barrel assembly includes a fourth rear barrel body, a fourth rear barrel flange, fine-rolled threaded steel, an anti-rotation pin, a water supply flange assembly and a mud discharge flange assembly. The fourth rear barrel flange is fixedly connected to the fourth rear barrel body, the fourth rear barrel flange is connected to the third rear barrel assembly, two holes are provided on the fourth rear barrel flange, the water supply flange assembly and the mud discharge flange assembly are respectively arranged on both sides of the two holes, the anti-rotation pin is arranged on the fourth rear barrel flange, the anti-rotation pin is connected to the mud and water system, and the fine-rolled threaded steel is fixedly connected to the anti-rotation pin.

[0023] Furthermore, it also includes a target surface position component, which is located in the middle of the tail of the first rear cylinder component, and the target surface position component is located on one side of the first rear cylinder correction support. The target surface position component includes a target surface support plate, a target surface panel, a target surface pendulum and a plumb bob. The target surface support plate is fixed below the rotation limit pin, and the target surface panel is fixed on the target surface support plate. The plumb bob is movably connected to the target surface panel, and the plumb bob always maintains a vertical state. One end of the target surface pendulum is a screw structure, and the target surface pendulum is screwed in the middle of the side of the plumb bob facing the tail of the pipe jacking machine.

[0024] Further, the first mud and water mechanism includes a front water supply assembly, a first front water supply pipe, a first rear water supply pipe, a first mud discharge pipe, a first mud and water pipe fixing plate and a front water supply box; the first front water supply pipe, the first rear water supply pipe and the first mud discharge pipe are connected with corresponding mud and water telescopic pipes; a ball valve is provided at the end of the mud and water telescopic pipe; the mud and water telescopic pipe is movably fixed in the front cylinder assembly through the first mud and water pipe fixing plate; the front water supply assembly is connected; the front water supply box is provided on the front cylinder assembly; the front water supply assembly includes a mud bin water box and a drain outlet; the mud bin water box is fixedly connected between the mud bin connecting flange and the mud bin horn cone; a plurality of through holes are correspondingly provided on the outer circumferential surfaces of the mud bin horn cone and the flange fixed cone crushing teeth; the plurality of through holes constitute the drain outlet.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention adopts a segmented design, which divides the pipe jacking machine into multiple sections for downhole construction, and realizes the modularity and detachability of the equipment structure through plug-in connection. This design greatly reduces the downhole size, making the equipment easier to deploy in a small space or complex environment, and significantly improving the construction adaptability. In addition, the segmented type of the pipe jacking machine provides favorable conditions for convenient maintenance, convenient replacement of wellheads, and convenient downhole construction. As the equipment size is reduced, the requirements for the working well are also reduced accordingly, further saving construction costs and time, and accelerating the project progress.

[0027] 2. The cutterhead assembly in the first section of the present invention is located at the front end, and can be used for preliminary crushing of complex strata. By optimizing the cutterhead structure and the configuration of the roller cutter, the crushing capacity of the cutterhead is improved, ensuring a significant improvement in the primary crushing effect; the mud bin assembly follows the cutterhead assembly, and is used to perform secondary crushing of the strata after the primary crushing, and mix with water to form a mud-water mixture. This design effectively solves the problem of poor primary crushing effect of traditional pipe jacking machines and enhances the equipment's ability to handle complex strata.

[0028] 3. The mud water system in the present invention is divided into three independent mechanisms, the first mud water mechanism, the second mud water mechanism and the third mud water mechanism, which are respectively integrated in three sections. The mud water system installed in each section has independent functions. This design realizes the precise control of mud water supply, mixing, conversion and discharge, and improves the adaptability and construction efficiency of the cement system in complex strata.

[0029] 4. The power system of the present invention adopts an integrated flange structure and is movably connected to the cutter head assembly, which not only ensures the stability of power transmission, but also facilitates maintenance and replacement. At the same time, since the power system is connected to other components through plug-in connection, the compactness and flexibility of the overall structure are improved.

[0030] 5. The present invention has a simple structure, is easy to manufacture, and has low cost. The segmented design and modular structure make the operation and maintenance of the equipment easier. Each segment can be disassembled and replaced independently, which reduces the failure rate and maintenance difficulty, and improves the safety and reliability of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the overall structure of the pipe jacking machine provided by the present invention;

[0032] Figure 2 The overall front view of the pipe jacking machine provided by the present invention;

[0033] Figure 3 The overall rear view of the pipe jacking machine provided by the present invention;

[0034] Figure 4 A schematic diagram of the structure of the mud water system provided by the present invention;

[0035] Figure 5 A schematic diagram of the structure of a cutter head assembly provided by the present invention;

[0036] Figure 6 A schematic diagram of the structure of the mud bin assembly provided by the present invention;

[0037] Figure 7 A front view of a mud bin assembly provided by the present invention;

[0038] Figure 8 A schematic diagram of the power system structure provided by the present invention;

[0039] Fig. 9 A schematic diagram of the structure of the front barrel assembly provided by the present invention;

[0040] Fig.10 A cross-sectional view of a front barrel assembly provided by the present invention;

[0041] Fig.11 A schematic diagram of the structure of a first rear barrel assembly provided by the present invention;

[0042] Fig.12 A rear view of a first rear barrel assembly provided by the present invention;

[0043] Fig.13 A schematic diagram of the structure of the deviation-correcting oil cylinder provided by the present invention;

[0044] Fig.14 A schematic diagram of the front end structure of the second rear barrel assembly provided by the present invention;

[0045] Fig.15 A cross-sectional view of a second rear barrel assembly provided by the present invention;

[0046] Fig.16 A schematic diagram of the tail structure of the second rear barrel assembly provided by the present invention;

[0047] Fig.17 A schematic diagram of the front end structure of the third rear barrel assembly provided by the present invention;

[0048] Fig.18 A cross-sectional view of a third rear barrel assembly provided by the present invention;

[0049] Fig.19 A schematic diagram of the tail structure of the third rear barrel assembly provided by the present invention;

[0050] Fig. 20 A rear view of a third rear barrel assembly provided by the present invention;

[0051] Fig.21 A schematic diagram of the positions of the electrical box assembly, micro valve assembly and camera assembly provided by the present invention;

[0052] Fig. 22 A schematic diagram of the structure of the electrical box assembly provided by the present invention;

[0053] Fig.23 A schematic diagram of the structure of the micro valve assembly provided by the present invention;

[0054] Fig.24 A schematic diagram of the camera assembly structure provided by the present invention;

[0055] Fig.25 A schematic structural diagram of a fourth rear barrel assembly provided by the present invention;

[0056] Fig.26 A schematic diagram of the target surface position component structure provided by the present invention;

[0057] Fig. 27 A side view of the target surface position assembly provided by the present invention.

[0058] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0059] 1. Cutterhead assembly; 2. Mud bin assembly; 3. Front cylinder assembly; 4. First rear cylinder assembly; 5. Second rear cylinder assembly; 6. Third rear cylinder assembly; 7. Fourth rear cylinder assembly; 8. Power system; 9. Mud and water system; 10. Correction cylinder; 11. Target surface position assembly; 1-1. Cutterhead surface; 1-2. Edge toothed hob; 1-3. Front toothed hob; 1-4. Single-edged scraper; 1-5. Cutterhead outer ring rib; 1-6. Wear-resistant guide plate; 1-7. Twisted leg; 1-8. Crushing tooth; 1-9. Spiral mud guide plate; 1-10. Cutterhead cone sleeve; 1-11. Edge hob support; 2-1. Mud bin cylinder; 2-2. Fixed cone crushing rib; 2-3. Mud bin horn cone; 2-4. Flange fixed cone crushing tooth; 2-5. Mud bin connecting flange ;3-1, front tube connection flange;3-2, first screw guard ring;3-3, front tube correction support;3-4, front tube observation window;3-5, front tube body;3-6, rotation limit seat;4-1, first rear tube body;4-2, rotation limit pin;4-3, first rear tube correction support;4-4, support rib plate;4-5, first quick-insert fixing plate;5-1, second rear tube body;5-2, second rear tube front flange;5-3, second rear tube rear flange;5-4, second rear tube observation window;5-5, second screw guard ring;5-6, second quick-insert fixing plate;6-1, third rear tube front flange;6-2, third rear tube body;6-3, third rear tube rear flange;6-4, third screw guard ring;6-5, third rear tube observation window;6-6, electrical Box assembly; 6-7, micro valve assembly; 6-8, camera assembly; 7-1, fourth rear cylinder body; 7-2, fourth rear cylinder flange; 7-3, precision-rolled threaded steel; 7-4, anti-rotation pin; 7-5, water supply flange assembly; 7-6, mud discharge flange assembly; 8-1, power spindle; 8-2, mud sealing cover; 8-3, power connection flange; 8-4, power housing; 8-5, reducer; 8-6, hydraulic motor; 8-7, first pressure sensor; 9-1, first mud and water system; 9-2, second mud and water system; 9-3, third mud and water system; 9-4, gear connector; 9-5, second pressure sensor; 6-6-1, electrical box; 6-6-2, electrical box fixing ear; 6-7-1, micro valve assembly bracket; 6-7 -2, micro valve group; 6-7-3, micro valve group fixing screw; 6-8-1, camera bracket; 6-8-2, camera; 6-8-3, camera fixing screw; 6-8-4, camera bracket fixing screw; 9-1-1, front water supply assembly; 9-1-2, first front water supply pipe; 9-1-3, first rear water supply pipe; 9-1-4, first mud pipe; 9-1-5, first mud pipe fixing plate; 9-1-6, mud pipe expansion pipe; 9-1-7, ball valve; 9-1-8, front water supply box; 9-2-1, second front water supply pipe; 9-2-2, second rear water supply pipe; 9-2-3, second mud pipe; 9-2-4, mud pipe expansion sleeve; 9-2-5, second mud pipe fixing plate; 9-2-6, bypass valve;9-2-7, integrated mud and water valve; 9-3-1, water supply pipe; 9-3-2, the third mud pipe; 11-1, target surface support plate; 11-2, target surface panel; 11-3, target surface pendulum needle; 11-4, plumb axis; 11-5, plumb; 11-6, target surface fixing screw; 11-7, plumb fixing nut; 9-1-1-1, mud bin water box; 9-1-1-2, drain outlet. ; DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0062] like Figure 1-Figure 27 As shown, the present embodiment provides a liquid-driven segmented micro pipe jacking machine suitable for composite formations, comprising a first section, a second section and a third section, wherein the connection between the first section, the second section and the third section is a plug-in type, specifically, the first section comprises a cutter head assembly 1, a mud bin assembly 2, a power system 8, a front barrel assembly 3 and a first rear barrel assembly 4 from front to back, the second section comprises a second rear barrel assembly 5, and the third section comprises a third rear barrel assembly 6 and a fourth rear barrel assembly 7, wherein the first rear barrel assembly 4 is connected to the second rear barrel assembly 5 by a plug-in type, and the second rear barrel assembly 5 is connected to the third rear barrel assembly 6 by a plug-in type, and at the same time, the first rear barrel assembly 4 is connected to the second rear barrel assembly 5, and the second rear barrel assembly 5 is connected to the third rear barrel assembly 6 by a screw connection and locking, and a sealing ring is arranged in the middle to achieve a sealing effect, and it should be noted that when the shell is plugged in, the mud and water connecting pipe and the hydraulic oil pipe are also plugged in and connected at the same time. The first section can be independently lowered into the well for construction. The first section mainly undertakes the basic function of pipe jacking construction. It is equipped with movable mud inlet and discharge pipelines on the ground to realize pipe jacking construction. The second section mainly connects the front and rear sections and the mud and water system 9 for conversion. The third section is responsible for the control of water inlet and mud discharge and the posture adjustment of the pipe jacking machine. The three sections are connected by plug-in type, which is convenient for construction down the well and reduces the difficulty of splicing in the working well. At the same time, it reduces the diameter requirement of the working well, making the pipe jacking machine suitable for narrow working sites and improving the flexibility and efficiency of construction.

[0063] Furthermore, if Figure 4As shown, the pipe jacking machine includes a mud water system 9. The mud water system 9 can also be divided into three mud water mechanisms according to the design of the segmented structure, namely the first mud water mechanism 9-1, the second mud water mechanism 9-2 and the third mud water mechanism 9-3. The above three mud water mechanisms have independent functions in each section and are integrated with the shell. The first mud water mechanism 9-1 includes a front water supply assembly 9-1-1, a first front water supply pipe 9-1-2, a first rear water supply pipe 9-1-3 and a first mud discharge pipe 9-1-4. The mud water system 9 also includes a plurality of gear ring connectors 9-4 for connecting and sealing pipes between different components, which can ensure both fine-tuning during assembly and convenience of disassembly and assembly during maintenance. The first front water supply pipe 9-1-2, the first rear water supply pipe 9-1-3 and the first mud discharge pipe 9-1-4 are respectively connected to the corresponding mud water telescopic pipe 9-1-6 through the gear ring connector 9-4. The surface of the mud water telescopic pipe 9-1-6 is surface-treated with chrome plating. A ball valve 9-1-7 is provided at the end of the telescopic pipe 9-1-6. The mud and water telescopic pipe 9-1-6 is movably fixed in the front cylinder assembly 3 through the first mud and water pipeline fixing plate 9-1-5, and the first mud and water pipeline fixing plate 9-1-5 is provided with a retaining ring at the front and rear for positioning. In addition, the front cylinder assembly 3 is opened and provided with a front water supply box 9-1-8. The front water supply box 9-1-8 is annular in shape, one side of which is connected to the front water supply assembly 9-1-1, and the other side is connected to the first front water supply pipe 9-1-2, so that The water flow is introduced from the first front water supply pipe 9-1-2 into the front water supply assembly 9-1-1, thereby introducing the water flow into the flange fixed cone crushing teeth 2-4 of the mud bin assembly 2. The first rear water supply pipe 9-1-3 introduces the water flow into the mud bin cylinder 2-1 of the mud bin assembly 2. The first mud discharge pipe 9-1-4 is used to discharge the mud and water in the mud bin cylinder 2-1. The front water supply and the rear water supply can be switched with each other, and can also supply water at the same time. Specifically, the front water supply assembly 9-1-1 will be introduced in the mud bin assembly 2.The second mud and water mechanism 9-2 includes a second front water supply pipe 9-2-1, a second rear water supply pipe 9-2-2, and a second mud discharge pipe 9-2-3. The front parts of the above three pipe bodies are all provided with mud and water telescopic sleeves 9-2-4, and are positioned by a second mud and water pipe fixing plate 9-2-5 welded on the second rear tube assembly 5. The mud and water telescopic sleeve 9-2-4 has a set of seals inside, which cooperate with the mud and water telescopic pipe 9-1-6 in the first section to connect the pipe in the second section with the corresponding pipe in the first section and seal it to ensure the telescopic amount of the deviation correction, which is used to eliminate the displacement caused by the deviation correction. There are four seals inside the mud and water telescopic sleeve 9-2-4 to eliminate the leakage caused by the deviation correction. The four seals are two Y-shaped rings and two support rings that are staggered in sequence. The second mud and water mechanism 9-2 also includes a bypass valve 9-2-6 and an integrated mud and water valve 9-2-7. The second front water supply pipe 9-2-1 and the second rear water supply pipe 9-2-2 are uniformly supplied from the bypass valve 9-2-6. The front and rear water supply can be switched with each other. The front end of the integrated mud and water valve 9-2-7 is connected with the bypass valve 9-2-6 and the second mud discharge pipe 9-2-3, and the rear end is connected with the pipe joint fixed on the shell through the gear ring connector 9-4. The function of the integrated mud and water valve 9-2-7 is to control the direct and bypass of water inlet and mud discharge, and adjust the internal and external circulation of the mud and water system 9. The function of the bypass valve 9-2-6 is to adjust the front water supply and the rear water supply, and switch the water supply and outlet of the jacking machine according to the construction requirements to meet the requirements of the jacking construction; the third mud and water mechanism 9-3 includes a water supply pipe 9-3-1 and a third mud discharge pipe 9-3-2, which are respectively connected with the third rear tube assembly 6 and the fourth rear tube assembly 7 through the gear ring connector 9-4. In addition, the mud and water system 9 also includes a second pressure sensor 9-5. The second pressure sensor 9-5 is provided with two, which are respectively installed at the ends of the water supply pipe 9-3-1 and the third mud discharge pipe 9-3-2 to detect the pressure of water inlet and mud discharge. ;

[0064] Specifically, Figure 1 As shown, in the first section, the cutter disc assembly 1 is located at the front end of the pipe jacking machine, followed by the mud bin assembly 2, the power system 8, the front cylinder assembly 3 and the first rear cylinder assembly 4, wherein the cutter disc assembly 1 is suitable for primary crushing of composite formations and is the main working component of the pipe jacking machine, the mud bin assembly 2 is used for secondary crushing of formations and forming a mud-water mixture to facilitate subsequent mud discharge, the power system 8 is used to provide the power and torque required for the pipe jacking machine to drive the cutter disc assembly 1 and the mud bin assembly 2 to work, the power system 8 is an integrated flange structure to ensure the segmented integration of the micro pipe jacking machine and to ensure its convenience in assembly and maintenance, the front cylinder assembly 3 and the first rear cylinder assembly 4 are connected in cooperation with the correction cylinder 10 to provide a correction function and limit the rotation of the pipe jacking machine.

[0065] Specifically, Figure 5As shown, the cutter disc assembly 1 includes a cutter disc plane 1-1, on which edge toothed hobs 1-2, front toothed hobs 1-3 and single-edged scrapers 1-4 are arranged. The cutter disc assembly 1 also includes a cutter disc outer ring rib 1-5, a wear-resistant guide plate 1-6, a twist leg 1-7, a crushing tooth 1-8, a spiral mud guide plate 1-9, a cutter disc cone sleeve 1-10 and an edge hob support 1-11. The cutter disc surface 1-1 is the main part of the cutter disc assembly 1, which is disc-shaped. Two edge toothed hobs 1-2 are provided, which are symmetrically arranged on the edge of the cutter disc surface 1-1. Two front toothed hobs 1-3 are provided, which are symmetrically arranged on the upper surface of the cutter disc surface 1-1. Four single-edged scrapers 1-4 are provided, which are arranged on the cutter disc surface 1-1 and distributed between the edge toothed hobs 1-2 and the front toothed hobs 1-3. The outer ring rib 1-5 surrounds the outer edge of the cutter disc surface 1-1, and multiple wear-resistant guide plates 1-6 are evenly distributed and welded on the outer edge surface of the cutter disc outer ring rib 1-5. One end of the twist leg 1-7 is welded to the cutter disc surface 1-1, and the other end is welded to the cutter disc cone sleeve 1-10. The cutter disc cone sleeve 1-10 is coaxial with the cutter disc surface 1-1 and connected to the main shaft of the power system 8. A wear-resistant grid is welded on the surface of the cutter disc cone sleeve 1-10, which helps to extend the service life of the cone sleeve. Multiple crushing teeth 1-8 are evenly distributed and welded on the outer cylindrical surface of the cutter disc cone sleeve 1-10. The spiral mud guide plate 1-9 is welded on the conical surface of the cutter disc cone sleeve 1-10. The spiral mud guide plate 1-9 rises in a spiral, and its lead is large and has the same taper as the cutter disc cone sleeve 1-10. The front part of the spiral mud guide plate 1-9 extends deep into the mud bin assembly 2.

[0066] The cutter head surface 1-1 is used to provide an installation foundation and support other cutter head components. During the excavation process of the pipe jacking machine, the edge toothed cutter 1-2 first contacts the stratum for preliminary crushing. The front toothed cutter 1-3 works in conjunction with the edge toothed cutter to further crush the stratum. The single-edged scraper 1-4 is used to scrape off the soil and gravel adhering to the cutter head surface 1-1 to keep the cutter head clean. The cutter head outer ring rib 1-5 is used to enhance the structural strength of the cutter head. The wear-resistant guide plate 1-6 is used to guide the flow of mud and water, reduce the scouring of the cutter head surface 1-1 by mud and water, and improve the wear resistance. The twist leg 1-7 is used to connect the cutter head surface 1-1 and the cutter head cone sleeve 1-10 and transmit torque. The crushing teeth 1-8 crush the stratum again when the cutter head assembly 1 rotates. The spiral guide plate 1-6 is used to guide the flow of mud and water to reduce the scouring of the cutter head surface 1-1 by mud and water, and improve the wear resistance. When the movable cone of the cutter disc rotates, the mud plate 1-9 can quickly push the mixed mud in the mud bin and guide it to the feeding and crushing tooth mouth of the fixed cone. With the staggered shearing of the movable cone and the fixed cone, the mixed mud enters the mud bin for secondary crushing, which greatly improves the crushing efficiency and the working efficiency of the pipe jacking machine. The cutter disc cone sleeve 1-10 is connected to the power system 8 to realize power transmission. It should be noted that the cutter disc cone sleeve 1-10 and the main shaft of the power system 8 have a taper of 6°. After the two cones are assembled together, the cutter disc cone sleeve 1-10 is tightly connected to the main shaft of the power system 8 with a dull plate. The taper can eliminate radial shear force and reduce the vibration caused by the secondary crushing of the cutter disc. The edge hob support 1-11 is used to fix and support the edge toothed hob to ensure its stable operation.

[0067] Specifically, Figure 6-Figure 7 As shown, the mud bin assembly 2 includes a mud bin cylinder 2-1, a fixed cone crushing rib 2-2, a mud bin horn cone 2-3, a flange fixed cone crushing tooth 2-4 and a mud bin connecting flange 2-5. The mud bin cylinder 2-1 is the main part of the mud bin assembly 2. A plurality of mud bin horn cones 2-3 are arranged in the mud bin cylinder 2-1. The plurality of mud bin horn cones 2-3 are welded together with a corresponding number of flange fixed cone crushing teeth 2-4. A plurality of fixed cone crushing ribs 2-2 are evenly distributed and welded on the inner surface of the mud bin horn cone 2-3. Among them, the mud silo cylinder 2-1 carries the mixed mud and crushing process in the mud silo, and provides space for crushing and mud discharge. The mud silo horn cone 2-3 and the flange fixed cone crushing teeth 2-4 form a crushing area, and perform secondary crushing on the mud entering the mud silo to improve the crushing efficiency. The fixed cone crushing ribs 2-2 are used to enhance the crushing effect and help crushing and mixing of the soil. The mud silo connecting flange 2-5 connects the mud silo assembly 2 with other components, such as the power system 8 and the front cylinder assembly 3, to ensure the connectivity and sealing of the mud and water system 9.

[0068] Specifically, Figure 4 and Figure 7As shown, three through holes are opened on the mud silo trumpet cone 2-3, one directly above and one each at 60° to the left and right. A mud silo water box 9-1-1-1 is welded between the mud silo connecting flange 2-5 and the mud silo trumpet cone 2-3, so that a closed water tank is formed between the mud silo connecting flange 2-5, the mud silo trumpet cone 2-3 and the mud silo cylinder 2-1. An annular notch is opened on the outer circumferential surface of the flange fixed cone crushing tooth 2-4, and a through hole is drilled directly above the annular notch, and a through hole is also drilled each at 60° to the left and right, so that together with the three through holes opened on the mud silo trumpet cone 2-3, three drainage outlets 9-1-1-2 are formed, forming a front water supply component 9-1-1 as a whole. When encountering construction in a stratum with sticky mud or a pebble stratum, open the front water supply assembly 9-1-1. When the sticky mud passes through the flange fixed cone crushing teeth 2-4, the sticky mud will not "stick" or form cakes under the pressure of water and the thrust of the spiral mud guide plate 1-9, and the slag discharge is smooth, thereby ensuring the success rate of the micro-pipe jacking machine construction and improving work efficiency.

[0069] Specifically, Figure 8As shown, the power main shaft 8-1 is located at the front end of the power system 8, and the mud sealing cover 8-2, the power connecting flange 8-3, the power housing 8-4, the reducer 8-5 and the hydraulic motor 8-6 are connected to the power main shaft 8-1 in sequence. The front part of the power main shaft 8-1 is a cone structure, which is movably connected to the cutter head cone sleeve 1-10. The front part of the power connecting flange 8-3 is connected to the mud bin connecting flange 2-5, and the rear part is connected to the front cylinder connecting flange 3-1. The power connecting flange 8-3 is distributed with a mud discharge port, a front water supply port and a rear water supply port. One side of the front water supply port is connected to the front water supply component 9-1-1, and the other side is connected to the front water supply component 9-1-1. The front water supply box 9-1-8 is connected to form a front water supply passage, one side of the rear water supply port and the mud discharge port is directly connected to the mud bin cylinder 2-1, the other side of the rear water supply port is connected to the first rear water supply pipe 9-1-3, and the other side of the mud discharge port is connected to the first mud discharge pipe 9-1-4. The two side planes of the power connecting flange 8-3 are sealed with O-rings respectively to enhance the sealing after connection, and are fixed by connecting screws. There are bearings and main shafts that are resistant to axial and radial shear inside the power housing 8-4, and the rear is connected in sequence with a reducer 8-5 and a hydraulic motor 8-6, and a first pressure sensor 8-7 is installed behind the power connecting flange 8-3. Among them, the power spindle 8-1 serves as the output end of the power system 8, which transmits the power generated by the hydraulic motor 8-6 to the cutter head assembly 1, driving the cutter head assembly 1 to perform earth-breaking operations. Its conical structure ensures that the spindle can resist the vibration and shear force of radial loads, and ensures that the cutter head assembly 1 and the spindle are tightened after being subjected to force, reducing the looseness of the pin. The mud sealing cover 8-2 is used to seal the front end of the power spindle 8-1 to prevent mud and impurities from entering the power system 8 and protecting internal components. The power connecting flange 8-3 is used to connect the power system 8 with the mud bin assembly 2, and provide necessary mud discharge ports and front and rear water supply ports to ensure the normal operation of the mud and water system 9. The small size and reasonable structure of the power housing 8-4 ensure the feasibility of the design of the micro pipe jacking machine. The reducer 8-5 can reduce the speed of the hydraulic motor 8-6 and increase the torque, so that the power spindle 8-1 can output rotational power suitable for earth-breaking operations. The hydraulic motor 8-6 serves as the power source of the power system 8, provides rotational power, and drives the entire pipe jacking machine forward. The first pressure sensor 8-7 is used to monitor the system pressure to ensure the stable operation of the power system 8.

[0070] Specifically, Figure 9-10As shown, the front barrel assembly 3 includes a front barrel connecting flange 3-1, a first screw guard ring 3-2, a front barrel correction support 3-3, a front barrel observation window 3-4, a front barrel body 3-5, and a rotation limiter 3-6. The front barrel body 3-5 is the main body of the front barrel assembly 3. The front barrel connecting flange 3-1 is located at the front end of the front barrel body 3-5. The front barrel connecting flange 3-1 is connected to the power connecting flange 8-3 in the power system 8. The front barrel connecting flange 3-1 is provided with a front water supply, a rear water supply and a mud discharge pipe opening. The three pipe openings are provided with three sealing grooves at the periphery thereof for connection and sealing with the front water supply port, the rear water supply port and the mud discharge pipe water in the power system 8. A plurality of front barrel correction supports 3-3 are welded inside the front barrel body 3-5. A front barrel observation window 3-4 is arranged on the outer surface of the front barrel body 3-5, which is convenient for installation and adjustment. Test the inclinometer, repair and inspect the oil pipe joint of the correction cylinder 10. It should be noted that the inclinometer is a prior art measuring instrument with model COT330-15, which is used to monitor the inclination angle of the pipe jacking machine in real time to ensure stability and safety during the pipe jacking operation. A limited rotation seat 3-6 is welded on the upper end of the inner part of the front barrel body 3-5 to cooperate with the limited rotation pin 4-2 in the first rear barrel to limit the rotation of the shell generated by the correction. Five first screw guard rings 3-2 are arranged on the front end of the outer surface of the front barrel body 3-5 to connect and seal the front barrel assembly 3 with the power connection flange 8-1.

[0071] Specifically, Fig.11 and Fig.12 As shown, the first rear barrel assembly 4 includes a first rear barrel body 4-1, a rotation limiting pin 4-2, a first rear barrel deviation correcting support 4-3 and a supporting rib plate 4-4. The first rear barrel body 4-1 is formed as an integral barrel. The rotation limiting pin 4-2 is welded to the upper front end of the first rear barrel assembly 4-1. The rotation limiting pin 4-2 cooperates with the rotation limiting seat 3-6. A plurality of first rear barrel deviation correcting supports 4-3 are welded on the inner wall of the first rear barrel body 4-1. The plurality of first rear barrel deviation correcting supports 4-3 are respectively welded with supporting rib plates 4-4 behind them. The first rear barrel deviation correcting supports 4-3 extend to the first rear barrel body. 4-1, so as to ensure that the position of the deviation-correcting cylinder 10 after assembly is in front of the first rear cylinder body 4-1, so that there will be no interference with the first rear cylinder body 4-1 during deviation correction. At the same time, the deviation-correcting cylinder 10 is as close to the front cylinder body 3-5 as possible, and the space is reasonably utilized. Screw holes and positioning grooves are set behind the first rear cylinder body 4-1 for connecting the second rear cylinder assembly 5. In addition, a first quick-insert fixing plate 4-5 is welded on the side of the rear side of the first rear cylinder body 4-1 to fix the quick-insert connectors of the eight oil inlet and return pipes of the four deviation-correcting cylinders 10 in the first section.

[0072] Specifically, Fig.13As shown, in order to adjust the posture of the pipe jacking machine during the jacking process, a correction cylinder 10 is also included. In this embodiment, four correction cylinders 10 are provided, which are placed in the front cylinder assembly 3 and the first rear cylinder assembly 4. One end of the correction cylinder 10 is fixedly connected to the front cylinder correction support 3-3, and the other end is fixedly connected to the first rear cylinder correction support 4-3. A micro valve group 6-7 hydraulic drive mechanism is provided in the third rear cylinder assembly 6. It should be noted that the above-mentioned micro valve group 6-7 adopts the existing technology of Hunan Shikai Technology Co., Ltd., model DGJP-PUVU-8L2201. The micro valve group 6-7 is connected to the correction cylinder 10 to control the four correction cylinders 10, thereby adjusting the posture of the pipe jacking machine during the jacking process. The four correction cylinders 10 are respectively provided with built-in stroke meters, model MHTC-0050M-S05-A10-01, which are used to detect the distance of the cylinder stroke and display it on the operation interface, thereby controlling the correction stroke.

[0073] Specifically, Figure 14-16 As shown, the second rear barrel assembly 5 includes a second rear barrel body 5-1, a second rear barrel front flange 5-2, a second rear barrel rear flange 5-3, a second rear barrel observation window 5-4, a second screw retaining ring 5-5, and a second quick-insert fixing plate 5-6. Five second screw retaining rings 5-5 are evenly distributed on the front of the second rear barrel body 5-1 to ensure the connection with the first rear barrel assembly 4. The second rear barrel front flange 5-2 is connected to the second rear barrel body 5-1 by screws, and there is a sealing ring between them. The second rear barrel rear flange 5-3 is located at the end of the second rear barrel body 5-1. The second rear barrel rear flange 5-3 is connected to the third rear barrel assembly 6 through The second rear cylinder body 5-1 is connected by screws, and a second rear cylinder observation window 5-4 is opened on both sides of the rear left and right sides of the second rear cylinder body 5-1 for easy maintenance and adjustment. The second quick-plug fixing plate 5-6 is welded to the middle step position of the rear flange 5-3 of the second rear cylinder. The common head of the quick plug at the front end of the hydraulic pipe is fixed to the second quick-plug fixing plate 5-11 with screws and marked. When the shell needs to be separated, the quick-plug male and female heads of the hydraulic pipe can be quickly separated, which is convenient for rapid construction. When the shell needs to be combined together, the mating surfaces are first brought close, and then the marked quick-plug female head and the male head are quickly plugged to achieve rapid connection of the hydraulic pipeline with the shell.

[0074] Specifically, Figure 17-Figure 21As shown, the third rear barrel assembly 6 includes a third rear barrel front flange 6-1, a third rear barrel body 6-2, a third rear barrel rear flange 6-3, a third screw retaining ring 6-4, a third rear barrel observation window 6-5, an electrical box assembly 6-6, a micro valve group assembly 6-7 and a camera assembly 6-8, wherein the third rear barrel front flange 6-1 is located at the front end of the third rear barrel body 6-2, the third rear barrel rear flange 6-3 is located at the rear end of the third rear barrel body 6-2, the third rear barrel front flange 6-1 is connected to the second rear barrel rear flange 5-3 by screws, and the structure is plug-in type, and there is a sealing ring in between, the third rear barrel rear flange 6-3 is connected to the fourth rear barrel assembly 7 by screws, and its structure is a positioning table type, and there is a sealing ring in between, a plurality of third screw retaining rings 6-4 are welded on the front of the third rear barrel body 6-2 to ensure the connection with the second rear barrel assembly 5, and a third rear barrel observation window 6-5 is opened on the left side of the rear part of the third rear barrel body 6-2 for convenient electrical The connection, maintenance and adjustment of the air box 6-6 plug, and the installation and connection of the micro valve group 6-7, an electrical box assembly 6-6 and a micro valve group assembly 6-7 are installed inside the third rear cylinder body 6-2, the electrical box assembly 6-6 is fixed to the upper top of the third rear cylinder body 6-2, to provide weak electricity for the pipe jacking machine and to control the cylinders of the deviation correction cylinder 10, the integrated mud and water valve 9-2-7 and the bypass valve 9-2-6, the camera assembly 6-8 is fixedly installed behind the third rear cylinder front flange 6-1, and two connecting cylinders (not marked in the figure) are arranged at the lower part of the panel of the third rear cylinder front flange 6-1, to flexibly connect the third rear cylinder assembly 6 and the mud and water in the second rear cylinder assembly 5, three sealed movable joints are arranged inside the above-mentioned connecting cylinder, the above-mentioned movable joint is a cylindrical center-through structure, the internal center-through is used for water intake and mud discharge, three sealing grooves are evenly distributed on the external cylindrical surface, which are used to install O-rings, which are precisely matched with the inner walls of the two connecting cylinders to ensure their sealing.

[0075] Specifically, Figure 22-Figure 24As shown, the electrical box assembly 6-6 includes an electrical box 6-6-1 and an electrical box fixing ear 6-6-2. A plurality of electrical box fixing ears 6-6-2 are welded to the upper surface edge of the electrical box 6-6-1. The wiring port of the electrical box 6-6-1 is aligned with the observation window 6-5 of the third rear tube. The micro valve group assembly 6-7 includes a micro valve group bracket 6-7-1, a micro valve group 6-7-2, and a micro valve group fixing screw 6-7-3. The micro valve group 6-7-2 is fixed to the micro valve group bracket 6-7-1 by the micro valve group fixing screw 6-7-3. The micro valve group bracket 6-7-1 is welded to the third rear tube. On the cylinder wall below the observation window 6-5, therefore, the micro valve group 6-7-2 and the electrical box 6-6-1 plug can be assembled and maintained through the third rear cylinder observation window 6-5. The camera assembly 6-8 includes a camera bracket 6-8-1, a camera 6-8-2, a camera fixing screw 6-8-3 and a camera bracket fixing screw 6-8-4. The camera bracket 6-8-1 is fixed to the third rear cylinder front flange 6-1 by the camera bracket fixing screw 6-8-4, and the camera 6-8-2 is fixed to the bottom of the camera bracket 6-8-1 by the camera fixing screw 6-8-3.

[0076] Specifically, Fig.25 The fourth rear cylinder assembly 7 shown includes a fourth rear cylinder body 7-1, a fourth rear cylinder flange 7-2, a precision-rolled threaded steel bar 7-3, an anti-rotation pin 7-4, a water supply flange assembly 7-5 and a mud discharge flange assembly 7-6. The fourth rear cylinder flange 7-2 is welded to the fourth rear cylinder body 7-1 as a whole. The fourth rear cylinder flange 7-2 is connected to the third rear cylinder rear flange 6-3 by screws. Two holes are provided on the fourth rear cylinder flange 7-2. The water supply flange assembly 7-5 and the mud discharge flange assembly 7-6 are arranged on both sides of the above two holes, respectively, and are connected to the sockets of the water supply pipe 9-3-1 and the third mud discharge pipe 9-3-2. They are symmetrically arranged on the rear side of the fourth rear cylinder flange 7-2. Two anti-rotation pins 7-4 are arranged, and the two anti-rotation pins 7-4 are respectively connected with the water supply pipe 9-3-1 and the third mud pipe 9-3-2, and the weight of the cement pipe itself is used to prevent the pipe from rotating when the pipe jacking machine is jacking. A precision-rolled threaded steel bar 7-3 is welded on the anti-rotation pin 7-4, and the pipe jacking machine can be pulled out in case of pipe jacking failure. Specifically, when the cement pipe is jacked, each section of the cement pipe is equipped with two precision-rolled threaded steel bars 7-3 and nuts of the same length as the cement pipe. When jacking, the precision-rolled threaded steel bars 7-3 are connected one by one with nuts. When jacking fails, the pipe jacking cylinder can be used to pull the pipe jacking machine back to the working well from the hole.

[0077] Specifically, Fig.26 and Fig. 27As shown, the target surface position component 11 of the pipe jacking machine is located in the middle of the tail of the first rear cylinder component 4 and at the rear of the first rear cylinder correction support 4-3, and is used to correctly reflect the real position of the pipe jacking machine. The target surface position component 11 includes a target surface support plate 11-1, a target surface panel 11-2, a target surface pendulum needle 11-3 and a plumb bob 11-5. The target surface support plate 11-1 is fixed to the bottom of the rotation limit pin 4-2 by screws, and the target surface panel 11-2 is fixed to the target surface support plate 11-1 by target surface fixing screws 11-6. The plumb bob 11-5 is fixed to the bottom of the target surface support plate 11-1 by a plumb bob shaft 11-4 and a plumb bob fixing nut 11-5. 1-7 is movably fixed on the target surface panel 11-2, the plumb bob 11-5 can always maintain a vertical state, one end of the target surface pendulum pin 11-3 is a screw structure, which can be directly screwed on the center of the side of the plumb bob 11-5 facing the tail of the pipe jacking machine. The target surface pendulum pin 11-3 always maintains a vertical state together with the plumb bob 11-5. When the inclination and rotation angle of the equipment change during construction, the camera 6-8-2 can intuitively see whether the target surface pendulum pin 11-3 and the target surface panel 11-2 are in a vertical state together, thereby determining whether the inclination and rotation angle of the equipment have changed.

[0078] The following is the operating principle of the present invention.

[0079] 1. Preparation

[0080] Assembling the pipe jacking machine: lower the first section into the well separately, and use the plug-in connection method to quickly assemble the second and third sections. Each section is not only connected by plug-in method, but also locked with screws to ensure the stability of the connection, and a sealing ring is set in the middle to act as a seal. During the assembly process, connect the mud and water pipes and hydraulic oil pipes to ensure the smooth operation of the mud and water system 9 and the power system 8.

[0081] Check the status of each system: confirm whether the hydraulic motor 8-6, reducer 8-5 and power spindle 8-1 in the power system 8 are operating normally and can provide sufficient torque and speed to drive the cutter head assembly 1 to work; connect the movable mud inlet and outlet pipelines on the ground with the mud inlet and outlet of the pipe jacking machine, and check whether the mud and water system 9 is tightly connected and leak-free; check and ensure that the wiring of the electrical box 6-6-1 and the micro valve group 6-7-2 is correct, and check whether the correction cylinder 10 and its built-in stroke meter are working normally to prepare for subsequent posture adjustments.

[0082] 2. Start-up and jacking

[0083] Start the power system 8: start the hydraulic motor 8-6, reduce the speed and increase the torque through the speed reducer 8-5, drive the power main shaft 8-1 to rotate, and then drive the cutter head assembly 1 to rotate, the edge toothed hob 1-2 and the front toothed hob 1-3 on the cutter head assembly 1 begin to contact the formation for preliminary crushing, with the continuous rotation of the cutter head, the single-edged scraper 1-4 scrapes off the soil and gravel adhering to the cutter head surface 1-1 to keep the cutter head clean, and the crushing teeth 1-8 crush the formation again, at the same time, the cutter head cone sleeve 1-10 is tightly connected with the power main shaft 8-1 to realize torque transmission, and eliminates radial shear force through the 6° taper to reduce the vibration caused by secondary crushing.

[0084] Jacking: The pipe jacking machine gradually moves forward, and the spiral mud guide plate 1-9 pushes and guides the crushed soil and gravel into the mud bin assembly 2. The mud bin horn cone 2-3 and the flange fixed cone crushing teeth 2-4 crush the soil for the second time. The front water supply assembly 9-1-1 is opened, and the water flow is introduced into the flange fixed cone crushing teeth 2-4 of the mud bin assembly 2 through the front water supply pipe (the first front water supply pipe 9-1-2, the second front water supply pipe 9-2-1) for flushing. Water is supplied to the mud bin cylinder 2-1 through the rear water supply pipe (the first rear water supply pipe 9-1-3, the second rear water supply pipe 9-2-2) to form a mud-water mixture, and the mud-water mixture in the mud bin is discharged through the mud discharge pipes (the first mud discharge pipe 9-1-4, the second mud discharge pipe 9-2-3, the third mud discharge pipe 9-3-2).

[0085] 3. Posture adjustment

[0086] Real-time monitoring: Utilizing the naturally vertical characteristic of the plumb bob 11-5, the target surface pendulum needle 11-3 is adjusted to be in line with the scale line of the target surface panel 11-2 from the beginning, that is, the inclination and rotation angle display is adjusted to 0 when the equipment is debugged at the beginning. The posture of the pipe jacking machine is monitored in real time through the target surface position component 11. By observing whether the target surface pendulum needle 11-3 is in line with the scale line of the target surface panel 11-2, it is determined whether the inclination and rotation angle of the equipment have changed. The camera component 6-8 transmits the construction picture to the ground control room in real time to help the operator remotely monitor the construction situation.

[0087] Adjustment of posture: When the posture of the pipe jacking machine deviates from the predetermined trajectory, the electrical box 6-6-1 can provide weak electricity and control signals to drive the micro valve group 6-7-2 to control the extension and contraction of the four deviation correction cylinders 10, adjust the posture of the pipe jacking machine, and detect the cylinder stroke through the built-in stroke meter to ensure the accuracy of the deviation correction. During the deviation correction process, the deviation correction support (front cylinder deviation correction support 3-3, first rear cylinder deviation correction support 4-3) and the rotation limit pin 4-2 between the front cylinder assembly 3 and the first rear cylinder assembly 4 work together to limit the rotation of the pipe jacking machine and ensure the accuracy of the deviation correction.

[0088] 4. Continue construction

[0089] Continuous jacking: When a section of the pipe is jacked into place, quickly connect it to the subsequent pipe to ensure a firm connection. After the pipe is connected, continue the jacking operation and repeat the above posture adjustment until the entire section of the pipe is laid. As the pipe jacking machine continues to jack, the mud and water system 9 continuously circulates mud and water to maintain the crushing effect and smooth mud discharge. The second pressure sensor 9-5 monitors the pressure of water inlet and mud discharge to ensure the stable operation of the mud and water system 9. According to different construction conditions, the integrated mud and water valve 9-2-7 and the bypass valve 9-2-6 are used to timely adjust the switching of the front water supply and the rear water supply. By rotating the integrated mud and water valve 9-2-7 to different angles, the internal and external circulation modes can be flexibly switched to ensure that the mud and water circulate smoothly in the system or are discharged in a directional manner. When the integrated mud and water valve 9-2-7 is at 0°, the inlet and outlet can flow straight without obstruction and do not interfere with each other; when rotated to 90°, the inlet water is guided to turn to the mud discharge pipe to achieve internal circulation; the bypass valve 9-2-6 accurately adjusts the flow direction of the front water supply and the rear water supply according to the construction requirements. In the 0° state, it can ensure that the water flow directly drives the water supply after the mud bin to maintain balance. At 90°, it guides the water flow to the front water supply of the flange fixed cone crushing teeth 2-4 to enhance the crushing efficiency. By flexibly using the control functions of the integrated mud and water valve 9-2-7 and the bypass valve 9-2-6, combined with real-time pressure monitoring data, the operating parameters and construction strategies of the mud and water system 9 are continuously optimized, the construction efficiency is improved, the construction cost and risk are reduced, and the smooth progress of the entire jacking project is ensured.

[0090] 5. Construction completed

[0091] When the entire section of the pipeline is laid, stop the power system 8 and close the mud and water system 9. Disassemble the components of the pipe jacking machine, lift them out of the working pit in sequence, clean and maintain them, and prepare for the next construction.

[0092] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A liquid-driven segmented micro pipe jacking machine suitable for composite formations, characterized in that: It comprises a first section, a second section and a third section, wherein the first section, the second section and the third section are connected by a plug-in type, wherein: The first section comprises a cutterhead assembly (1), a mud bin assembly (2), a power system (8), a front barrel assembly (3) and a first rear barrel assembly (4) in sequence; the cutterhead assembly (1) is located at the front end of the pipe jacking machine; the cutterhead assembly (1) is connected to the mud bin assembly (2) in a plug-in manner; the power system (8) is movably connected to the cutterhead assembly (1); the power system (8) is connected to the mud bin assembly (2) and the front barrel assembly (3) in a plug-in manner; and the first rear barrel assembly (4) is movably connected to the front barrel assembly (3); The second section comprises a second rear barrel assembly (5), and the second rear barrel assembly (5) is connected to the first rear barrel assembly (4) by plugging; The third section comprises a third rear barrel assembly (6) and a fourth rear barrel assembly (7), wherein the third rear barrel assembly (6) is connected to the second rear barrel assembly (5) by plugging, and the fourth rear barrel assembly (7) is fixedly connected to the third rear barrel assembly (6). It also includes a mud water system (9), which is divided into a first mud water mechanism (9-1), a second mud water mechanism (9-2) and a third mud water mechanism (9-3) in sequence according to the segmented structure, and is integrated in the first section, the second section and the third section respectively.

2. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 1, characterized in that: The cutter disc assembly (1) comprises a cutter disc surface (1-1), on which a plurality of edge toothed hobs (1-2), front toothed hobs (1-3) and single-edged scrapers (1-4) are arranged, the outer edge of the cutter disc surface (1-1) is surrounded by a cutter disc outer ring rib (1-5), the outer edge surface of the cutter disc outer ring rib (1-5) is fixedly connected to a plurality of wear-resistant guide plates (1-6), the cutter disc surface (1-1) is fixedly connected to a twist leg (1-7), the other end of the twist leg (1-7) is fixedly connected to the cutter disc cone sleeve (1-10), and the The cutter disc cone sleeve (1-10) is coaxial with the cutter disc surface (1-1), the cutter disc cone sleeve (1-10) is connected to the power system (8), a plurality of crushing teeth (1-8) are fixedly connected to the outer circumferential surface of the cutter disc cone sleeve (1-10), a spiral mud guide plate (1-9) is fixedly connected to the conical surface of the cutter disc cone sleeve (1-10), the spiral mud guide plate (1-9) rises in a spiral, the spiral mud guide plate (1-9) and the cutter disc cone sleeve (1-10) have the same taper, and one end of the spiral mud guide plate (1-9) penetrates into the mud bin assembly (2).

3. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 1, characterized in that: The mud bin assembly (2) comprises a mud bin cylinder (2-1) and a mud bin connecting flange (2-5); a plurality of mud bin horn cones (2-3) are arranged in the mud bin cylinder (2-1); the plurality of mud bin horn cones (2-3) are fixedly connected to a corresponding number of flange fixed cone crushing teeth (2-4); a plurality of fixed cone crushing ribs (2-2) are distributed and fixedly connected on the inner surface of the mud bin horn cone (2-3); one end of the mud bin connecting flange (2-5) is fixedly connected to the mud bin cylinder (2-1), and the other end is connected to the power system (8).

4. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 1, characterized in that: The power system (8) comprises a power main shaft (8-1), which is located at the front end of the power system (8). The power main shaft (8-1) is connected to a mud sealing cover (8-2), a power connecting flange (8-3), a power housing (8-4), a reducer (8-5) and a hydraulic motor (8-6) in sequence. One end of the power main shaft (8-1) is movably connected to the cutter head assembly (1), one end of the power connecting flange (8-3) is connected to the mud bin assembly (2), and the other end is connected to the front cylinder assembly (3). A mud discharge port, a front water supply port and a rear water supply port are distributed on the power connecting flange (8-3), and a bearing and a main shaft are arranged inside the power housing (8-4).

5. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 1, characterized in that: The front barrel assembly (3) comprises a front barrel connecting flange (3-1) and a front barrel body (3-5); the front barrel connecting flange (3-1) is mounted on one end of the front barrel body (3-5); the front barrel connecting flange (3-1) is connected to the power system (8); a plurality of front barrel deviation correcting supports (3-3) are mounted inside the front barrel body (3-5); and a limited swivel seat (3-6) is fixedly connected to the upper end of the front barrel body (3-5); The first rear cylinder assembly (4) comprises a first rear cylinder body (4-1), one end of the first rear cylinder body (4-1) is connected to the front cylinder body (3-5), a limited rotation pin (4-2) is fixedly connected to the upper front end of the first rear cylinder body (4-1), the limited rotation pin (4-2) cooperates with the limited rotation seat (3-6), a plurality of first rear cylinder correction supports (4-3) are fixedly connected to the inner wall of the first rear cylinder body (4-1), and a plurality of first rear cylinder correction supports (4-3) are respectively welded with supporting ribs (4-4) at the rear, and the first rear cylinder correction supports (4-3) extend out of the first rear cylinder body (4-1).

6. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 5, characterized in that: It also includes a correction cylinder (10), wherein a plurality of the correction cylinders (10) are arranged in the front cylinder assembly (3) and the first rear cylinder assembly (4), one end of the correction cylinder (10) is fixedly connected to the front cylinder correction support (3-3), and the other end of the correction cylinder (10) is fixedly connected to the first rear cylinder correction support (4-3).

7. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 1, characterized in that: The second rear barrel assembly (5) comprises a second rear barrel body (5-1), a second rear barrel front flange (5-2) and a second rear barrel rear flange (5-3), wherein the second rear barrel front flange (5-2) is fixedly connected to the second rear barrel body (5-1), the second rear barrel rear flange (5-3) is located at the end of the second rear barrel body (5-1), and the second rear barrel rear flange (5-3) is connected to the third rear barrel assembly (6); The third rear barrel assembly (6) comprises a third rear barrel front flange (6-1), a third rear barrel body (6-2) and a third rear barrel rear flange (6-3); the third rear barrel front flange (6-1) is connected to one end of the third rear barrel body (6-2); the third rear barrel rear flange (6-3) is connected to the other end of the third rear barrel body (6-2); the third rear barrel front flange (6-1) is connected to the second rear barrel assembly (5); an electrical box assembly (6-6) and a micro valve group assembly (6-7) are installed inside the third rear barrel body (6-2); the electrical box assembly (6-6) is fixed to the upper top of the third rear barrel body (6-2); and a camera assembly (6-8) is fixedly installed on one side of the third rear barrel front flange (6-1).

8. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 5, characterized in that: The fourth rear barrel assembly (7) comprises a fourth rear barrel body (7-1), a fourth rear barrel flange (7-2), a finely rolled threaded steel bar (7-3), an anti-rotation pin (7-4), a water supply flange assembly (7-5) and a mud discharge flange assembly (7-6); the fourth rear barrel flange (7-2) is fixedly connected to the fourth rear barrel body (7-1); the fourth rear barrel flange (7-2) is connected to the third rear barrel assembly (6); two holes are provided on the fourth rear barrel flange (7-2); the water supply flange assembly (7-5) and the mud discharge flange assembly (7-6) are respectively arranged on both sides of the two holes; the anti-rotation pin (7-4) is arranged on the fourth rear barrel flange (7-2); the anti-rotation pin (7-4) is connected to the mud and water system (9); and the finely rolled threaded steel bar (7-3) is fixedly connected to the anti-rotation pin (7-4).

9. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 8, characterized in that: The invention also comprises a target surface position component (11), wherein the target surface position component (11) is located in the middle of the tail of the first rear cylinder component (4), and the target surface position component (11) is located on one side of the first rear cylinder deviation correction support (4-3). The target surface position component (11) comprises a target surface support plate (11-1), a target surface panel (11-2), a target surface swing needle (11-3) and a plumb bob (11-5). The target surface support plate (11-1) is fixed below the rotation limiting pin (4-2), the target surface panel (11-2) is fixed on the target surface support plate (11-1), the plumb bob (11-5) is movably connected to the target surface panel (11-2), the plumb bob (11-5) always maintains a vertical state, and one end of the target surface swing needle (11-3) is a screw structure, and the target surface swing needle (11-3) is screwed in the middle of the plumb bob (11-5) on the side facing the tail of the pipe jacking machine.

10. The liquid-driven segmented micro pipe jacking machine suitable for composite formations according to claim 3, characterized in that: The first mud water mechanism (9-1) comprises a front water supply assembly (9-1-1), a first front water supply pipe (9-1-2), a first rear water supply pipe (9-1-3), a first mud discharge pipe (9-1-4), a first mud water pipeline fixing plate (9-1-5) and a front water supply box (9-1-8); the first front water supply pipe (9-1-2), the first rear water supply pipe (9-1-3) and the first mud discharge pipe (9-1-4) are connected to corresponding mud water telescopic pipes (9-1-6); a ball valve (9-1-7) is provided at the end of the mud water telescopic pipe (9-1-6); the mud water telescopic pipe (9-1-6) is connected to the first mud water pipeline fixing plate (9-1-5) The front water supply assembly (9-1-1) is movably fixed in the front barrel assembly (3), the front water supply assembly (9-1-1) is connected to the front water supply box (9-1-8), the front water supply box is arranged on the front barrel assembly (3), the front water supply assembly (9-1-1) comprises a mud bin water box (9-1-1-1) and a water outlet (9-1-1-2), the mud bin water box (9-1-1-1) is fixedly connected between the mud bin connecting flange (2-5) and the mud bin horn cone (2-3), a plurality of through holes are correspondingly opened on the outer circumferential surfaces of the mud bin horn cone (2-3) and the flange fixed cone crushing teeth (2-4), and the plurality of through holes constitute the water outlet (9-1-1-2).

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