A TPD construction method machine and its construction method

Abstract

The present invention relates to the technical field of diaphragm wall construction equipment, in particular to a TPD method machine and its construction method, which includes a chassis system, a vehicle frame, a gantry system and a chain cutter assembly. The vehicle frame is installed on the chassis system, and the gantry system is arranged on the vehicle frame and connected through front and rear tilt cylinders. The chain cutter assembly is installed on the lifting frame of the gantry system. The chassis system is composed of two sets of traveling components, a connecting beam and a mounting seat. The vehicle frame is connected to the chassis through a slide rail system and is equipped with front and rear drive cylinders. The gantry system is composed of a fixed gantry and a rotating gantry, including a central rotating shaft tooling and a secondary rotating shaft tooling, as well as left and right tilt cylinders for adjusting the inclination angle of the rotating gantry. This solution improves the verticality control accuracy of the chain cutter assembly and the inclination angle adjustment ability of the gantry system.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm wall construction equipment, and in particular to a TPD method machine and its construction method. Background Art

[0002] In the construction of diaphragm walls, the construction method of the dam composite flexible impervious wall, whose English name is Trenchcutting Plastic pile-mixing Deep wall method. This construction method adds a polymer impervious plate on the basis of the TRD method (full name: TrenchCutting Re-mixing Deep Wall Method), and is abbreviated as the TPD method.

[0003] As the core equipment for diaphragm wall construction, the verticality control of the chain cutter assembly of the TPD method machine directly determines the construction quality of the wall. However, the gantry systems of traditional TPD method machines generally have key defects:

[0004] It is unable to actively adjust the left and right inclination angles, resulting in the chain cutter assembly being prone to deflection due to uneven stress under complex geological conditions (such as inclined rock formations or strata with uneven hardness). In this passive adjustment mode, it is difficult to correct the verticality deviation of the chain cutter assembly in real time. In the light case, it will cause leakage at the wall joints, and in the heavy case, it will lead to potential structural safety hazards. To solve this problem, some equipment needs to rely on external auxiliary devices (such as ground cylinders or manual adjustment mechanisms) for intervention. However, such methods are cumbersome to operate, inefficient, and difficult to adapt to dynamic construction requirements, seriously restricting the grooving accuracy and construction efficiency.

[0005] In addition, the overall height of the traditional gantry system is fixed. When facing height restrictions in the air (such as pipelines or low bridges in urban subway construction), it is often necessary to disassemble or replace the equipment, increasing the construction cost and cycle. In terms of the chassis system, the slide rail components are usually arranged between the two crawlers, resulting in an overly large overall width of the equipment and making it difficult to adapt to narrow construction environments. At the same time, the enclosed lubrication structure of the slide rail system is prone to accelerated wear due to the intrusion of sediment, and the fixed length of the guide rail and insufficient modular expansion ability further limit the flexibility of the frame sliding and the maintenance efficiency. These problems together highlight the technical bottlenecks of the existing TPD method machines in terms of gantry inclination angle adjustment, space adaptability, and reliability, and there is an urgent need to achieve breakthroughs through systematic innovation. Summary of the Invention

[0006] The purpose of the present application is to provide a TPD method machine and its construction method, which have the advantages of improving the verticality control accuracy of the chain cutter assembly and enhancing the inclination angle adjustment ability of the gantry system.

[0007] The present application provides a TPD construction machine, and the technical solution is as follows: A TPD construction machine includes a chassis system, a vehicle frame, a gantry system, and a chain cutter assembly; the vehicle frame is installed on the chassis system, the gantry system is arranged on the vehicle frame, and the vehicle frame and the gantry system are connected by a front and rear tilt angle oil cylinder for adjusting the front and rear tilt angles of the gantry system; the chain cutter assembly is installed on the lifting frame of the gantry system; the chassis system includes two sets of symmetrically arranged traveling components, a connecting beam connecting the two sets of traveling components, and a mounting seat for installing a slide rail assembly; the vehicle frame is connected to the chassis system through a slide rail system and is configured with front and rear drive oil cylinders to drive the vehicle frame to slide relative to the chassis system; the gantry system includes a fixed gantry, hinged at the bottom to the vehicle frame, with a central shaft hole in the middle and a plurality of strip-shaped shaft holes centered on the central shaft hole; a rotating gantry, with a central shaft hole in the middle and a plurality of secondary shaft holes centered on the central shaft hole; a central rotating shaft tooling, passing through the central shaft holes of the fixed gantry and the rotating gantry; a plurality of secondary rotating shaft toolings, respectively passing through the strip-shaped shaft holes of the fixed gantry and the secondary shaft holes of the rotating gantry; left and right tilt angle oil cylinders, driving the rotating gantry to rotate around the central rotating shaft tooling for left and right tilt angle adjustment.

[0008] Further, the present application also proposes that

[0009] The traveling components of the chassis system include:

[0010] - A crawler frame, a crawler provided on the crawler frame, and a hydraulic motor;

[0011] - The hydraulic motors are symmetrically arranged at the rear end of the crawler frame to drive the crawler;

[0012] - A guide wheel is installed at the front end of the crawler frame to tension the crawler;

[0013] - Idler wheels are arranged along the length direction of the crawler frame to support the crawler.

[0014] Further, the present application also proposes that the mounting seat is fixedly connected to the outer side surface of the crawler frame, and the mounting surface extends beyond the outer edge of the crawler; the mounting seat is integrally formed with the crawler frame, and a plurality of mounting seats are spaced apart on the outer side wall of the crawler frame, and the mounting surfaces are flush.

[0015] Further, the present application also proposes that the slide rail system includes a guide rail assembly, including a guide rail and a linear card slot; a guide seat, with a limiting plate detachably connected in its sliding groove; the guide rail is embedded in the sliding groove of the guide seat, and the limiting plate is snapped into the linear card slot to prevent the guide rail from coming out; when the guide rail assembly slides relative to the guide seat, the limiting plate slides relative to the linear card slot, and the limiting plate restricts the guide rail from disengaging from the sliding groove; the guide seat is fixedly connected to the crawler frame of the chassis system, and the guide rail assembly is fixedly connected to the lower end of the vehicle frame.

[0016] Furthermore, the present application also proposes that an oil groove is provided on the bottom surface of the chute of the guiding seat, and the contact surface is lubricated through a grease hole; the guide rail is L-shaped and forms a linear card slot with the guide rail seat.

[0017] . Furthermore, the present application also proposes that through holes are provided on the side wall of the guiding seat, and the limiting plate is fixed to the inner side wall of the chute through fasteners; end plates are fixedly connected to both ends of the guide rail and the guide rail seat.

[0018] Furthermore, the present application also proposes that there are two left-right inclination cylinders, which are respectively horizontally and parallelly arranged on the upper and lower sides of the central shaft hole, and the cylinder end and the output shaft end are respectively hinged to the corresponding connecting seats of the fixed gantry and the rotating gantry; the left-right orientations of the left-right inclination cylinders on the upper and lower sides are the same. When one left-right inclination cylinder pushes outwards, the other left-right inclination cylinder pulls back synchronously to realize the left-right inclination adjustment of the rotating gantry, ensuring the consistency of the forces in both rotation directions and the data unity of the two cylinders during data acquisition.

[0019] Furthermore, the present application also proposes that both the central rotating shaft tooling and the auxiliary rotating shaft tooling include a rotating shaft body, with a retaining ring protruding radially outwards at its first end, and an annular groove formed by concave inward on the outer surface of its second end; a washer, sleeved on the first end of the rotating shaft body and located inside the retaining ring; after the rotating shaft body passes through the corresponding shaft holes of the fixed gantry and the rotating gantry, the washer and the retaining ring press against the surface of the gantry; a locking plate, fixedly connected to the washer and at least partially inserted into the annular groove of the rotating shaft body.

[0020] Furthermore, the present application also proposes that there are two locking plates, which enclose a ring structure, and its inner ring is embedded in the annular groove; threaded holes are provided on the washer, through holes are provided on the locking plate, and bolts pass through the through holes and are fixedly connected to the threaded holes to realize the fixation of the locking plate and the washer; the locking plate is embedded in the annular groove on the rotating shaft to achieve the locking and fixation of the fixed gantry and the rotating gantry.

[0021] Furthermore, the present application also proposes that an oil passage is provided inside the rotating shaft body, the oil passage inlet is opened on the end face of the first end of the rotating shaft body, and at least two oil passage outlets are opened on the side surface of the rotating shaft body between the washer and the retaining ring; for the central rotating shaft tooling, its oil passage outlets are respectively communicated with the oil grooves in the central shaft holes of the fixed gantry and the rotating gantry; for the auxiliary rotating shaft tooling, its oil passage outlets are respectively communicated with the oil grooves in the strip-shaped shaft hole of the fixed gantry and the auxiliary shaft hole of the rotating gantry.

[0022] Furthermore, the present application also proposes that the gantry system further includes a top frame, which is detachably connected to the top of the rotating gantry; the top frame track of the top frame is butted with the main track of the rotating gantry to form a continuous track for the lifting frame to move.

[0023] Furthermore, the present application also proposes that a positioning and mating structure is provided between the lower end of the top frame track and the upper end of the main body track. This positioning and mating structure includes a plug column vertically provided on the lower end surface of the top frame longitudinal beam; a plug slot correspondingly opened on the upper end surface of the main frame longitudinal beam; when the top frame is connected to the upper end of the rotating gantry, the plug column is inserted into the plug slot to form track positioning.

[0024] Furthermore, the present application also proposes that the main body track includes a first sliding column group provided on both sides of the outer side surface of the main frame longitudinal beam, and the top frame track includes a second sliding column group provided on both sides of the outer side surface of the top frame longitudinal beam; the upper end of the first sliding column group and the lower end of the second sliding column group form a sleeve-type plug-in structure through the cooperation of the plug column and the plug slot.

[0025] Furthermore, the present application also proposes that the rotating gantry includes two parallel main frame longitudinal beams, and a main frame cross beam connecting the upper end portions of the two main frame longitudinal beams. The main body tracks are symmetrically arranged on the outer side surfaces of the two main frame longitudinal beams; the top frame includes two parallel top frame longitudinal beams, and a top frame cross beam connecting the upper end portions of the two top frame longitudinal beams. The lower end of the top frame longitudinal beam is detachably connected to the upper end of the main frame longitudinal beam. The top frame tracks are symmetrically arranged on the outer side surfaces of the two top frame longitudinal beams; a first flange is provided at the upper end of the main frame longitudinal beam; a second flange corresponding to the first flange is provided at the lower end of the top frame longitudinal beam; the first flange and the second flange are connected by a bolt assembly arranged in a circular array.

[0026] Furthermore, the present application also proposes that at least two connecting beams are provided, which enclose a device working area with the front end of the crawler frame. The chain cutter assembly is installed in this area and performs grooving cutting through the front and back sliding of the vehicle frame.

[0027] The present application also relates to a construction method of a TPD method machine, which uses the above TPD method machine and includes the following steps:

[0028] Step 1: Construction of embedded holes and installation of cutting boxes

[0029] 1.1 Use an excavator to excavate to form a cutting box preparation groove;

[0030] 1.2 After placing the cutting box in the preparation groove, the TPD method machine moves to the position of the preparation groove to complete the installation of the cutting box;

[0031] 1.3 The TPD method machine advances to a predetermined position for vertical excavation operation. After the cutting box completely enters the formation, unload the cutting box and return to the preparation groove;

[0032] 1.4 Repeat steps 1.2 and 1.3 to achieve the step-by-step connection and synchronous excavation of multiple cutting boxes through alternating installation and excavation operations until the calibrated depth is reached;

[0033] Step 2: Layered cutting and injection of stabilizing fluid

[0034] 2.1 During vertical excavation, inject cutting fluid formed by mixing water and bentonite in a predetermined ratio through the cutting head synchronously;

[0035] Step 3: Two-way cutting and stirring operation

[0036] 3.1 After the equipment cuts and travels a set distance in the forward direction, it moves in the reverse direction;

[0037] 3.2 During the reverse travel process, stir the soil and rock produced by cutting, and continuously inject the cutting fluid;

[0038] Step 4: Construction of composite wall forming

[0039] 4.1 When the equipment travels forward again, perform secondary cutting and stirring, stop injecting the cutting fluid synchronously and switch to injecting cement slurry;

[0040] 4.2 Before the initial setting of the cement slurry, use a hoisting device to vertically implant the H-shaped steel into the formed continuous wall;

[0041] 4.3 After the final setting of the cement slurry, form a composite underground continuous wall structure with both rigid support and anti-seepage functions.

[0042] As can be seen from the above, a TPD construction method machine and its chassis system, frame, gantry system and chain cutter assembly provided by the present application realize the active inclination angle adjustment of the chain cutter assembly through the design of the left and right inclination cylinders of the gantry system and the central rotating shaft tooling, improving the verticality control accuracy; through the modular design of the slide rail system and the optimization of the lubrication structure, the space adaptability and maintenance efficiency of the equipment are enhanced, having significant technical advantages. Description of the Drawings

[0043] Figure 1 It is a three-dimensional schematic diagram of a TPD construction method machine provided by the present application.

[0044] Figure 2 It is a side schematic diagram of a TPD construction method machine provided by the present application (the lifting frame and the chain cutter assembly are omitted in the figure).

[0045] Figure 3 It is a schematic diagram of the chassis system provided by the present application.

[0046] Figure 4 It is a schematic diagram of the frame installed on the chassis system provided by the present application.

[0047] Figure 5 It is a structural schematic diagram of the slide rail system provided by the present application.

[0048] Figure 6 What is provided for this application is an exploded view of the slide rail system.

[0049] Figure 7 What is provided for this application is an assembly diagram of the fixed gantry and the rotating gantry.

[0050] Figure 8 What is provided for this application is an exploded structural view of the central rotating shaft tooling.

[0051] Figure 9 What is provided for this application is a structural cross-sectional view of the central rotating shaft tooling.

[0052] Figure 10 What is provided for this application is a structural diagram of the gantry system.

[0053] Figure 11 What is provided for this application is a structural diagram of the fixed gantry.

[0054] Figure 12 What is provided for this application is a structural diagram of the rotating gantry.

[0055] Figure 13 What is provided for this application is a three-dimensional structural diagram of the gantry system (without the top frame installed).

[0056] Figure 14 What is provided for this application is a three-dimensional disassembly and assembly diagram of the top frame.

[0057] Figure 15 What is provided for this application is a front disassembly and assembly diagram of the top frame. Detailed implementation manners

[0058] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0061] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature. Embodiment 1

[0063] As Figures 1 - 15 shown, this embodiment provides a TPD construction machine, including a chassis system 105, a vehicle frame 106, a gantry system 107 and a chain cutter assembly 415. The vehicle frame 106 is mounted on the chassis system 105, the gantry system 107 is arranged on the vehicle frame 106, and the chain cutter assembly 415 is mounted on the lifting frame 121 of the gantry system 107.

[0064] As Figure 3As shown, the chassis system 105 includes two sets of symmetrically arranged traveling assemblies, a connecting beam 101 connecting the two sets of traveling assemblies, and a mounting seat 122 for mounting the slide rail assembly. Each set of traveling assemblies includes a crawler frame 103, a crawler 111 disposed on the crawler frame 103, and a hydraulic motor 112. The hydraulic motor 112 drives the crawler 111 to rotate cyclically on the crawler frame 103. A mounting seat 122 is fixedly connected to the outer side surface of the crawler frame 103. The mounting seat 122 extends beyond the outer edge of the crawler 111 to form a mounting surface for mounting the slide rail assembly. In this solution, the hydraulic motors 112 are symmetrically arranged at the rear end of the crawler frame 103 to provide power output. The traveling assembly further includes a guide wheel 113 mounted at the front end of the crawler frame 103 for tensioning the crawler 111. The traveling assembly further includes idler wheels 110 arranged along the length direction of the crawler frame 103 for supporting the crawler 111 and maintaining uniform force. The crawler 111 surrounds the guide wheel 113, the idler wheels 110, and the drive wheels of the hydraulic motors 112 to form a closed traveling structure.

[0065] The chassis system 105 provides stable basic support through two sets of symmetrically arranged traveling assemblies and the connecting beam 101, ensuring the stability of the equipment under complex geological conditions. At least two connecting beams 101 are provided. The connecting beam 101 and the front end of the crawler frame 103 enclose a working area 414 of the equipment. The chain cutter assembly 415 is installed in this area and performs grooving cutting by the front and rear sliding of the vehicle frame 106. This design ensures the stability and safety of the working area 414 of the equipment. The chain cutter assembly 415 is installed in this area and performs grooving cutting by the front and rear sliding of the vehicle frame 106, improving the operation flexibility and working efficiency of the equipment. The working area 414 of the equipment constructed in this way makes the front part of the base an open structure, and the space margin accounts for 1 / 3 of the overall base. The cutting box of the chain cutter assembly 415 is placed on the front side, facilitating the observation of the operation state and working condition of the cutter, facilitating the installation of the cutter box and handling emergency situations during the working process, such as replacing damaged cutters and replacing special cutter teeth, improving the maintainability and working efficiency of the equipment.

[0066] Furthermore, the mounting base 122 is fixedly connected to the outer side surface of the crawler frame 103, and the mounting surface extends beyond the outer edge of the crawler 111. By arranging the mounting base 122 on the outer side surface of the crawler frame 103 and making the mounting base 122 extend beyond the outer edge of the crawler 111, this technical solution effectively reduces the distance between the two crawlers 111, making the chassis width smaller, more adaptable to special terrains with narrow roads, and improving the mobility and applicability of the equipment in narrow construction spaces. On the other hand, the mounting bases 122 are distributed on both sides, making the overall internal operable space larger, providing sufficient space for the installation, disassembly, and maintenance of the equipment working system, reducing the construction difficulty, and improving the engineering efficiency. Among them, the mounting base 122 is fixedly connected to the outer side surface of the crawler frame 103 by welding or bolt connection to ensure its stability. In a specific implementation, the mounting base 122 and the crawler frame 103 are integrally formed, further enhancing the connection stability and avoiding equipment shaking or displacement caused by loose connection. Multiple mounting bases 122 are arranged at intervals on the outer side wall of the crawler frame 103, and the mounting surfaces are flush. Multiple mounting bases 122 are arranged at intervals on the outer side wall of the crawler frame 103, and the mounting surfaces are flush, ensuring the coordination and consistency among the multiple mounting bases 122 and avoiding unstable equipment operation caused by uneven mounting surfaces.

[0067] The vehicle frame 106 is connected to the chassis system 105 through a slide rail system 123, and is configured with front and rear drive cylinders 124 to drive the vehicle frame 106 to slide relative to the chassis system 105. As Figures 4 - 6 shown, the slide rail system 123 includes a guide rail assembly and a guide seat 104. The guide seat 104 is fixedly connected to the crawler frame 103 of the chassis system 105, and the guide rail assembly is fixedly connected to the lower end of the vehicle frame 106.

[0068] Among them, the guide rail assembly includes a guide rail 102 linearly arranged along the length direction, and a linear card slot 115 is constructed on the guide rail 102 along its length direction. A chute 108 is arranged inside the guide seat 104, and a limiting plate 114 is detachably connected to the notch of the chute 108. The guide rail 102 in the guide rail assembly is embedded in the chute 108 of the guide seat 104, and the limiting plate 114 is snapped into the linear card slot 115 of the guide rail 102. When the guide rail assembly slides relative to the guide seat 104, the limiting plate 114 slides relative to the linear card slot 115, and the limiting plate 114 restricts the guide rail 102 from disengaging from the chute 108. Among them, the limiting plate 114 can be fixed to the notch of the chute 108 by bolts, buckles or other detachable connection methods. Further, the shape and size of the limiting plate 114 can be adjusted according to the linear card slot 115 of the guide rail 102 to ensure that it can effectively restrict the disengagement of the guide rail 102.

[0069] Specifically, when the guide rail assembly slides relative to the guide seat 104, the cooperation between the limit plate 114 and the linear card slot 115 can effectively prevent the guide rail 102 from disengaging from the sliding slot 108. Through this design, the slide rail system 123 can remain stable during operation, avoiding equipment failures caused by the disengagement of the guide rail 102. In addition, since the limit plate 114 is detachably connected to the notch of the sliding slot 108, when maintenance or replacement is required, the limit plate 114 can be quickly removed, facilitating the operation. At the same time, the notch of the sliding slot 108 can be designed as an open structure, with strong adaptability. In the face of harsh sediment working conditions, the fully open structure can directly wash the guide seat 104 and the guide rail 102, facilitating cleaning and lubrication, thereby further improving the maintenance efficiency of the slide rail system 123. Thus, the technical solution of this application solves the technical problem that the guide rail 102 in the slide rail system 123 is prone to disengage from the sliding slot 108 by optimizing the cooperation design between the guide rail assembly and the guide seat 104. Compared with the prior art, this solution has the advantages of simple structure, convenient maintenance, stable operation, etc., and can effectively improve the reliability and service life of the slide rail system 123.

[0070] Furthermore, this application also proposes that an oil groove is provided on the bottom surface of the sliding slot 108 of the guide seat 104, and the contact surface is lubricated through a grease hole; among them, the oil groove can be designed as a straight line, a wave shape, a spiral shape or a zigzag shape, and the specific shape is selected according to the lubrication requirements. As a preferred implementation manner, the depth and width of the oil groove can be optimized according to the viscosity and flow rate of the lubricating oil to ensure that the lubricating oil can be evenly distributed on the contact surface. In addition, the position of the grease hole can be set on the side or bottom of the sliding slot 108, and the specific position is selected according to the actual installation space and lubrication effect. Through the connection design of the oil groove and the grease hole, the lubricating oil can flow into the oil groove through the grease hole, and then be evenly distributed on the contact surface between the guide rail 102 and the guide seat 104. Thus, the lubricating oil can effectively reduce the friction between the guide rail 102 and the guide seat 104, prevent wear of the contact surface caused by insufficient lubrication, and thereby extend the service life of the slide rail system 123. Compared with the prior art, this technical solution has the advantages of simple structure, remarkable lubrication effect, convenient maintenance, etc., and can effectively solve the technical problem of wear of the contact surface between the guide rail 102 and the guide seat 104 due to insufficient lubrication during the sliding process of the slide rail system 123.

[0071] As Figure 6As shown, the guide rail assembly further includes a guide rail base 126 and end plates 308; the guide rail base 126 is fixedly connected to the guide rail 102, and the end plates 308 are fixedly connected to both ends of the guide rail base 126 and the guide rail 102. An installation groove is provided at the upper end of the guide rail base 126, and one end of the guide rail 102 is fitted into the installation groove and fixed by a fastening member. The shape and size of the installation groove can be designed according to the cross-sectional shape of the guide rail 102. For example, the groove can be rectangular, trapezoidal or other suitable shapes to ensure that the guide rail 102 can be tightly embedded. The fastening member can be a bolt, a screw or other fasteners, and the guide rail 102 is fixed in the installation groove by a threaded connection or a snap connection. The cross-section of the guide rail 102 is L-shaped. When it is fixedly connected to the guide rail base 126, a linear card slot 115 is formed between the L-shaped guide rail 102 and the guide rail base 126. Specifically, the cross-sectional design of the L-shaped guide rail 102 enables a linear card slot 115 to be naturally formed between the guide rail 102 and the guide rail base 126. This design simplifies the construction process of the linear card slot 115 and improves the assembly efficiency. The cooperation between the L-shaped guide rail 102 and the guide rail base 126 not only ensures the precise formation of the linear card slot 115, but also enhances the overall stability and durability of the guide rail system 102. Through this structure, the connection between the guide rail 102 and the guide rail base 126 is more secure, reducing the risk of loosening or disengagement due to vibration or impact.

[0072] In Figure 5 and Figure 6 In the solution shown, through holes 307 are constructed on the side wall of the guide seat 104, and the fastening member passes through the through holes 307 to fix the limiting plate 114 on the inner side wall of the sliding groove 108. Among them, the setting position of the through holes 307 can be adjusted according to the size and shape of the limiting plate 114 to ensure that the fastening member can effectively fix the limiting plate 114. The fastening member can be a bolt, a screw or other suitable fixing devices, and the specific selection depends on the actual application scenario and the required fixing strength. Thus, through the cooperation of the through holes 307 on the side wall of the guide seat 104 and the fastening member, the fixing of the limiting plate 114 in the sliding groove 108 is more secure, avoiding loosening or falling off of the limiting plate 114 due to sliding or impact. This design not only improves the stability and reliability of the sliding rail system 123, but also enables the direct control of the disassembly and assembly of the limiting plate 114 through the fastening member outside the guide seat 104, making the installation and disassembly of the limiting plate 114 more convenient, and thus making the disassembly and assembly of the entire sliding rail system 123 more convenient.

[0073] In the construction of diaphragm walls, as the core equipment, the verticality control of the chain cutter assembly 415 of the TPD method machine directly determines the construction quality of the wall. However, the gantry system 107 of traditional TPD method machines generally has key defects: it cannot actively adjust the left and right inclination angles, resulting in the chain cutter assembly 415 being prone to deflection due to uneven stress under complex geological conditions (such as inclined rock formations or strata with uneven hardness). In this passive adjustment mode, it is difficult to correct the verticality deviation of the chain cutter assembly 415 in real time. At best, it may cause leakage at the wall joints, and at worst, it may lead to potential structural safety hazards. To solve this problem, some equipment needs to rely on external auxiliary devices (such as ground cylinders or manual adjustment mechanisms) for intervention. However, such methods are cumbersome to operate, inefficient, and difficult to adapt to dynamic construction requirements, seriously restricting the grooving accuracy and construction efficiency.

[0074] Therefore, as Figure 1 and Figure 2 and Figure 7 and Figures 10 - 13 shown, the gantry system 107 of this solution includes a fixed gantry 116, hinged at the bottom to the vehicle frame 106. The vehicle frame 106 and the fixed gantry 116 are connected by front and rear inclination cylinders 109. The two ends of the front and rear inclination cylinders 109 are respectively connected to the top of the vehicle frame 106 and the fixed gantry 116, and are used to adjust the front and rear inclination angles of the gantry system 107. A central shaft hole 201 is provided in the middle of the fixed gantry 116, and a plurality of strip-shaped shaft holes 202 centered on the central shaft hole 201. A rotating gantry 117 has a central shaft hole 201 in the middle and a plurality of secondary shaft holes 203 centered on the central shaft hole 201. A central rotating shaft tooling 118 is inserted through the central shaft holes 201 of the fixed gantry 116 and the rotating gantry 117. A plurality of secondary rotating shaft toolings 119 respectively pass through the strip-shaped shaft holes 202 of the fixed gantry 116 and the secondary shaft holes 203 of the rotating gantry 117. The gantry system 107 is also provided with left and right inclination cylinders 120, which drive the rotating gantry 117 to rotate around the central rotating shaft tooling 118 for left and right inclination adjustment. In this solution, the layout of the central shaft holes 201 and the secondary shaft holes 203 of the fixed gantry 116 and the rotating gantry 117 can be further optimized to improve the rotation accuracy and stability of the rotating gantry 117. The structures of the central rotating shaft tooling 118 and the secondary rotating shaft toolings 119 can be further optimized to improve their durability and maintenance convenience. The number and layout of the left and right inclination cylinders 120 can be further optimized to improve the inclination adjustment accuracy and response speed of the rotating gantry 117.

[0075] The gantry system 107 includes a fixed gantry 116 and a rotating gantry 117, which are connected by a central rotating shaft tooling 118 and a secondary rotating shaft tooling 119. The left and right inclination cylinders 120 drive the rotating gantry 117 to rotate around the central rotating shaft tooling 118, realizing the left and right inclination adjustment of the chain cutter assembly 415. These technical features cooperate with each other, enabling the TPD method machine to adjust the verticality of the chain cutter assembly 415 in real time under complex geological conditions, solving the problem of skewing of the chain cutter assembly 415 due to uneven force, and improving the wall construction quality and construction efficiency. The fixed gantry 116 provides stable support and guidance through the central shaft hole 201 and the strip-shaped shaft hole 202, ensuring the stability of the rotating gantry 117 during rotation. The rotating gantry 117 is connected to the fixed gantry 116 through the central shaft hole 201 and the secondary shaft hole 203, realizing rotation and inclination adjustment. The central rotating shaft tooling 118 serves as the rotation center of the rotating gantry 117, ensuring the stability of the rotating gantry 117 rotating around the fixed axis. The secondary rotating shaft tooling 119 adjusts the left and right inclination of the rotating gantry 117 by restricting the movement range of the strip-shaped shaft hole 202, thereby realizing multi-degree-of-freedom adjustment. The left and right inclination cylinders 120 drive the rotating gantry 117 to rotate and realize the inclination adjustment of the rotating gantry 117 through the movement of the secondary rotating shaft tooling 119 in the strip-shaped shaft hole 202, thereby solving the technical problem that it is difficult to flexibly adjust the left and right inclination of the gantry system 107 under complex geological conditions.

[0076] Furthermore, there are two left and right tilt cylinders 120, which are respectively arranged horizontally and in parallel on the upper and lower sides of the central shaft hole 201, and the cylinder body end and the output shaft end are respectively hinged to the corresponding connecting seats 204 of the fixed gantry 116 and the rotating gantry 117; the left and right orientations of the left and right tilt cylinders 120 on the upper and lower sides are the same. When one of the left and right tilt cylinders 120 pushes outwards, the other left and right tilt cylinder 120 pulls back synchronously to achieve the adjustment of the left and right tilt of the rotating gantry 117. Specifically, the installation position and quantity of the left and right tilt cylinders 120 are two, which are respectively located on the upper and lower sides of the central shaft hole 201. This layout ensures the balance and stability of the gantry system 107 during the adjustment of the left and right tilt. The cylinder body end and the output shaft end of the cylinder are respectively hinged to the corresponding connecting seats 204 of the fixed gantry 116 and the rotating gantry 117. This connection method enables the cylinder to effectively transmit force and achieve the tilt adjustment of the rotating gantry 117. Among them, the left and right orientations of the hydraulic cylinders being the same means that the installation directions of the two hydraulic cylinders are the same, that is, the relative positions of their cylinder bodies and output shafts remain consistent. This design enables the hydraulic cylinders to work together during the pushing and pulling process and avoids movement interference caused by inconsistent directions. Through the above technical means, this application effectively solves the technical problem that the gantry system 107 of the TPD method machine cannot actively adjust the left and right tilt, and improves the adaptability and construction accuracy of the equipment under complex geological conditions. Compared with the prior art, by setting two left and right tilt cylinders 120 and realizing their synchronous actions, this application not only improves the adjustment accuracy of the gantry system 107, but also enhances the stability and reliability of the equipment, thus significantly improving the construction efficiency and quality.

[0077] Such as Figure 8 and Figure 9As shown, both the central rotating shaft tooling 118 and the secondary rotating shaft tooling 119 include: a rotating shaft body 301, with a retaining ring 302 protruding radially outward at its first end, and an annular groove 303 formed by concave inward the outer surface at its second end; a washer 304, sleeved on the first end of the rotating shaft body 301 and located inside the retaining ring 302; after the rotating shaft body 301 passes through the corresponding shaft holes of the fixed gantry 116 and the rotating gantry 117, the washer 304 and the retaining ring 302 are pressed against the gantry surface; a locking plate 305, fixedly connected to the washer 304 and at least partially snapped into the annular groove 303 of the rotating shaft body 301. Among them, the retaining ring 302 of the rotating shaft body 301 and the washer 304 ensure the fixation of the rotating shaft tooling on the gantry by pressing against the gantry surface, preventing the rotating shaft from shifting during rotation. The locking plate 305 is fixedly connected to the washer 304 and further enhances the stability of the rotating shaft tooling by snapping into the annular groove 303 of the rotating shaft body 301. Through the combined design of the retaining ring 302, the washer 304 and the locking plate 305, the central rotating shaft tooling 118 and the secondary rotating shaft tooling 119 can achieve quick disassembly and high stability without modifying the fixed gantry 116 and the rotating gantry 117, significantly improving the maintenance convenience and adaptability of the system. Specifically, the retaining ring 302 and the washer 304 jointly press against both sides of the corresponding shaft holes of the fixed gantry 116 and the rotating gantry 117 to ensure the stable installation of the rotating shaft; the locking plate 305 is fixed on the washer 304, and the locking plate 305 is snapped into the groove to form axial locking, further restricting the axial movement of the rotating shaft. Thus, this technical solution solves the technical problems of the installation stability, axial limiting ability and disassembly convenience of the rotating shaft tooling in the gantry rotating system. Compared with the prior art, it has higher installation efficiency and better maintenance convenience. In summary, through the combined design of the retaining ring 302, the washer 304 and the locking plate 305, and the oil circuit design inside the rotating shaft body 301, the present application effectively solves the problems of fixation and lubrication of the rotating shaft tooling in the gantry rotating system, significantly improving the installation efficiency, maintenance convenience and operation stability of the system. Specifically, the designs of the retaining ring 302 and the annular groove 303 of the rotating shaft body 301 can be achieved in various ways. For example, the retaining ring 302 can be welded or integrally formed at the first end of the rotating shaft body 301, and the annular groove 303 can be formed by turning or milling. The washer 304 can be made of metal or composite materials, and its inner diameter matches the outer diameter of the rotating shaft body 301 to ensure a tight fit. The locking plate 305 can be made of steel plate or alloy materials, and its shape and size should match the annular groove 303 to ensure that it can effectively restrict the axial movement of the rotating shaft after being snapped in. Thus, through the designs of the retaining ring 302 and the annular groove 303 of the rotating shaft body 301, the combined use of the washer 304 and the retaining ring 302, and the fixed connection of the locking plate 305, this technical solution effectively solves the technical problems of the installation and fixation of the central rotating shaft tooling 118 and the secondary rotating shaft tooling 119 in the gantry system.Compared with the prior art, this solution has higher installation efficiency and better maintenance convenience, and can ensure the overall stability and reliability of the gantry system 107.

[0078] Furthermore, there are two or more locking plates 305, and the multiple locking plates 305 enclose an annular structure, and its inner ring is fitted into the annular groove 303; the washer 304 is provided with threaded holes 306, and the locking plate 305 is provided with through holes 307. A bolt passes through the through hole 307 and is fixedly connected to the threaded hole 306 to realize the fixation of the locking plate 305 and the washer 304. Specifically, the locking plate 305 encloses an annular structure through multiple pieces, enhancing the integrity and stability of the locking plate 305, enabling it to be better fitted into the annular groove 303, thereby improving the fixation effect between the locking plate 305 and the washer 304. The washer 304 is provided with threaded holes 306, and the locking plate 305 is provided with through holes 307. A bolt passes through the through hole 307 and is fixedly connected to the threaded hole 306. Through the fastening action of the bolt, the connection strength between the locking plate 305 and the washer 304 is further enhanced, ensuring its firm fixation. This design, through the annular structure of multiple locking plates 305 and the fastening action of bolts, effectively solves the technical problem of the loose fixation between the locking plate 305 and the washer 304, and improves the reliability and service life of the equipment. As a preferred implementation manner, the locking plate 305 can be designed as three or four pieces, and the shape and size of each locking plate 305 can be adjusted according to the specific application scenario to ensure that it can closely enclose and be fitted into the annular groove 303. In addition, the specifications and materials of the bolts can also be selected according to actual needs to provide sufficient fastening force and durability. Thus, this technical solution, through the annular structure of multiple locking plates 305 and the fastening action of bolts, not only solves the technical problem of the loose fixation between the locking plate 305 and the washer 304, but also improves the overall stability and reliability of the equipment. Compared with the prior art, this solution has the advantages of simple structure, convenient installation, and remarkable fixation effect, and can effectively improve the operation efficiency and service life of the equipment.

[0079] Such as Figure 9As shown, an oil passage 309 is provided inside the rotating shaft body 301. The oil passage inlet 310 is opened on the end face of the first end of the rotating shaft body 301, and at least two oil passage outlets 311 are opened on the side of the rotating shaft body 301 between the washer 304 and the retaining ring 302. For the central rotating shaft tooling 118, its oil passage outlets 311 are respectively communicated with the oil grooves in the central shaft holes 201 of the fixed gantry 116 and the rotating gantry 117. For the secondary rotating shaft tooling 119, its oil passage outlets 311 are respectively communicated with the oil grooves in the strip-shaped shaft hole 202 of the fixed gantry 116 and the secondary shaft hole 203 of the rotating gantry 117. The number of the oil passage outlets 311 can be adjusted according to the actual lubrication requirements. For example, in a scenario with higher lubrication requirements, the number of the oil passage outlets 311 can be increased. The shape and size of the oil grooves can be optimized according to the specific application scenarios to ensure that the lubricating oil can be evenly distributed and effectively lubricate the contact surfaces. The position of the oil passage outlets 311 between the washer 304 and the retaining ring 302 can be accurately machined to ensure its precise docking with the oil grooves, avoiding the leakage of the lubricating oil or uneven lubrication. This technical solution simplifies the complexity of the lubrication system by optimizing the oil passage layout, while improving the lubrication effect. The reasonable design of the oil passage inlet 310 and the oil passage outlets 311 enables the lubricating oil to be directly and efficiently transported to the parts that need to be lubricated, avoiding the problems of complex oil passage layout and poor lubrication effect in the traditional lubrication method. For the central rotating shaft tooling 118 and the secondary rotating shaft tooling 119, the communication design between the oil passage outlets 311 and the oil grooves ensures the uniform distribution of the lubricating oil under different working conditions, thus effectively solving the technical problems of complex oil passage layout and poor lubrication effect during the lubrication process of the rotating shaft tooling. Compared with the prior art, this solution not only simplifies the oil passage layout, but also significantly improves the reliability and efficiency of lubrication, and is applicable to the lubrication requirements under various complex working conditions.

[0080] As Figure 14 and Figure 15As shown in the figure, the gantry system 107 further includes a top frame 401. A main track 403 extending in the vertical direction is provided on the rotating gantry 117. The top frame 401 is detachably fixed to the top end of the rotating gantry 117, and a top frame track 402 is provided thereon. The lifting frame 121 is provided with a chain cutter assembly 415 and is movably arranged on the main track 403 of the rotating gantry 117. When the top frame 401 is installed on the rotating gantry 117, the lower end of the top frame track 402 and the upper end of the main track 403 form a continuous docking track, and the lifting frame 121 can move along the continuous docking track to the area of the top frame track 402. Through the detachable top frame 401 design, the gantry system 107 can be flexibly adjusted according to the height limit of the construction environment. In scenarios where a higher construction height is required, the top frame 401 can be installed on the rotating gantry 117 to expand the moving range of the lifting frame 121; while in a height-limited environment, the top frame 401 can be disassembled to reduce the overall height of the gantry system 107. This design solves the problem that traditional gantry systems are difficult to adapt to height-limited environments due to their fixed overall structure, and improves the flexibility and efficiency of construction. Compared with the prior art, the gantry system 107 of the present application realizes flexible adjustment of height while maintaining the running stability of the chain cutter assembly 415, significantly improving the scene adaptability and construction economy of the equipment.

[0081] Furthermore, a positioning and mating structure is provided between the lower end of the top frame track 402 and the upper end of the main track 403. The positioning and mating structure includes a plug column 406 vertically arranged on the lower end face of the top frame longitudinal beam 405, and a plug slot 407 correspondingly opened on the upper end face of the main frame longitudinal beam 404. When the top frame 401 is connected to the upper end of the rotating gantry 117, the plug column 406 is inserted into the plug slot 407 to form track positioning. This structure is simple and effective, improving the stability and reliability of the gantry system 107. Moreover, through the preliminary docking of the plug column 406 and the plug slot 407, subsequent flange docking can be facilitated, making the construction more convenient. Thus, the technical solution of the present application ensures the precise docking between the top frame track 402 and the main track 403 by setting the positioning and mating structure of the plug column 406 and the plug slot 407, solving the problem of inaccurate track positioning in the prior art. Compared with the prior art, this solution has the advantages of simple structure, convenient installation, high positioning accuracy, etc., significantly improving the overall performance and construction efficiency of the gantry system 107. Further, the plug column 406 is arranged on the lower end face of the top frame longitudinal beam 405 instead of the upper end of the main frame longitudinal beam 404, which can ensure that the top end of the main frame longitudinal beam 404 will not be lifted due to the plug column 406 when the top frame 401 is removed.

[0082] As Figure 14 and Figure 15As shown, the rotating gantry 117 includes two parallel main gantry longitudinal beams 404, and a main gantry cross beam 410 connecting the upper ends of the two main gantry longitudinal beams 404. The main body track 403 is symmetrically arranged on the outer sides of the two main gantry longitudinal beams 404; the top gantry 401 includes two parallel top gantry longitudinal beams 405, and a top gantry cross beam 411 connecting the upper ends of the two top gantry longitudinal beams 405. The lower ends of the top gantry longitudinal beams 405 are detachably connected to the upper ends of the main gantry longitudinal beams 404. The top gantry track 402 is symmetrically arranged on the outer sides of the two top gantry longitudinal beams 405. Thus, the rotating gantry 117 forms a stable frame structure through the two main gantry longitudinal beams 404 and the main gantry cross beam 410. The main body track 403 is symmetrically arranged on the outer sides of the two main gantry longitudinal beams 404 to ensure the stability of the lifting frame 121 during movement. The top gantry 401 forms a frame structure corresponding to the rotating gantry 117 through the two top gantry longitudinal beams 405 and the top gantry cross beam 411. The top gantry track 402 is symmetrically arranged on the outer sides of the two top gantry longitudinal beams 405 to ensure the movement stability of the lifting frame 121 in the area of the top gantry 401. The lower ends of the top gantry longitudinal beams 405 are detachably connected to the upper ends of the main gantry longitudinal beams 404, making the connection between the top gantry 401 and the rotating gantry 117 simple and easy to achieve stable docking. Compared with the prior art, this technical solution simplifies the connection structure between the rotating gantry 117 and the top gantry 401 through modular design, improves the convenience of installation and disassembly, and at the same time ensures the stability and accuracy of the lifting frame 121 during movement.

[0083] Furthermore, a first flange 412 is provided at the upper end of the main frame longitudinal beam 404; a second flange 413 corresponding to the first flange 412 is provided at the lower end of the top frame longitudinal beam 405; the first flange 412 and the second flange 413 are connected by bolts arranged in a circular array. The design of the first flange 412 and the second flange 413 makes the connection between the main frame longitudinal beam 404 and the top frame longitudinal beam 405 more stable. The first flange 412 is usually fixed to the upper end of the main frame longitudinal beam 404 by welding or bolts, while the second flange 413 is fixed to the lower end of the top frame longitudinal beam 405 in the same way. The shape of the flange can be circular, square or other suitable shapes to ensure the stability and accuracy of the connection. The bolt assembly usually includes a plurality of bolts and nuts, and these bolts are evenly distributed at the edge of the flange in a circular array. By tightening the bolts, the first flange 412 and the second flange 413 can be tightly connected together, thus ensuring the stability of the connection between the main frame longitudinal beam 404 and the top frame longitudinal beam 405. As a preferred embodiment, high-strength bolts can be used for the bolts to further improve the stability of the connection. In addition, anti-slip patterns or coatings can be provided on the surface of the flange to increase the friction force and prevent sliding or loosening at the connection. During the installation process, a torque wrench can be used to ensure that the tightening force of each bolt is consistent, thereby avoiding unstable connection caused by inconsistent tightening and loosening of the bolts. In this regard, the technical solution of the present application realizes the detachable connection between the main frame longitudinal beam 404 and the top frame longitudinal beam 405 through the cooperation of the flange and the bolts, while ensuring the stability and accuracy of the connection. Compared with the prior art, this solution not only solves the problem that the traditional gantry system 107 is difficult to meet the height limit requirements, but also improves the flexibility and construction efficiency of the gantry system 107. Through this design, the gantry system 107 can be quickly disassembled and reinstalled when needed, so as to adapt to different construction environments and height limits, reducing the inconvenience and cost in construction.

[0084] In a specific solution, the main body track 403 includes a first sliding column group 408 disposed on both sides of the outer side surface of the main frame longitudinal beam 404, and the top frame track 402 includes a second sliding column group 409 disposed on both sides of the outer side surface of the top frame longitudinal beam 405; the upper end of the first sliding column group 408 and the lower end of the second sliding column group 409 form a sleeve-type plug-in structure through the cooperation of the plug-in column 406 and the plug-in slot 407. Among them, the first sliding column group 408 and the second sliding column group 409 are respectively disposed on both sides of the outer side surfaces of the main frame longitudinal beam 404 and the top frame longitudinal beam 405, and this symmetrical arrangement ensures the stability of the track. Further, a guiding structure, such as a chamfer or an inclined surface, can be provided between the plug-in column 406 and the plug-in slot 407 to facilitate the smooth insertion of the plug-in column 406 into the plug-in slot 407. In addition, a locking mechanism, such as a spring pin or a bolt, can also be provided between the plug-in column 406 and the plug-in slot 407 to enhance the fixing effect after plugging. Thus, through the cooperation of the plug-in column 406 and the plug-in slot 407, the upper end of the first sliding column group 408 and the lower end of the second sliding column group 409 form a sleeve-type plug-in structure, which not only realizes the continuous docking of the tracks, but also enhances the stability and smooth sliding of the tracks. Specifically, the sleeve-type plug-in structure can effectively disperse the stress at the track docking position, reducing the track deformation or jamming phenomenon caused by misalignment or looseness during docking. Therefore, this design solves the technical problem of forming a continuous and stable sliding track structure when the main body track 403 and the top frame track 402 are docked, ensuring the smooth movement of the lifting frame 121 on the track. Compared with the prior art, this technical solution realizes the rapid docking and stable operation of the tracks through a simple plug-in structure, improving the construction efficiency and equipment reliability.

[0085] As Figure 1As shown in the figure, C-shaped sliding grooves are provided on both sides of the lifting frame 121. The inner contour of the sliding grooves matches the outer shape of the main track 403 / the top frame track 402, forming a wrapped sliding pair. The design of the C-shaped sliding grooves enables the lifting frame 121 to closely wrap around the main track 403 and the top frame track 402, ensuring the stability of the lifting frame 121 during movement. Through the matching of the sliding grooves and the tracks, the lifting frame 121 can smoothly move between the rotary gantry 117 and the top frame 401, avoiding movement instability caused by discontinuous tracks or mismatched sliding pairs. Specifically, the inner contour of the C-shaped sliding grooves matches the outer shape of the main track 403 and the top frame track 402, forming a wrapped sliding pair structure. This structure not only improves the lifting accuracy of the chain cutter assembly 415 but also enhances the reliability and durability of the entire gantry system 107. Thus, the technical solution of this application effectively solves the problem of stable sliding of the lifting frame 121 on the rotary gantry 117 and the top frame track 402 through the design of the C-shaped sliding grooves. Compared with the prior art, this solution not only improves the lifting accuracy of the chain cutter assembly 415 but also enhances the reliability and durability of the entire gantry system 107, having significant technical advantages.

[0086] The above-mentioned gantry system 107 with a detachable top frame 401 can flexibly adapt to height-limited environments, improving the scene adaptability and construction economy of the TPD method machine. Additionally, during the installation stage of the tool box of the chain cutter assembly 415 of the TPD method machine, the top frame 401 can be added to the rotary gantry 117 to meet the installation height requirements of the tool box; while in height-limited scenarios, the top frame 401 can be removed for construction. Embodiment 2

[0087] This embodiment relates to a construction method of a TPD method machine, using the TPD method machine described in Embodiment 1 and including the following steps.

[0088] Step 1: Construction of embedded holes and installation of the cutting box. The cutting box is a component of the chain cutter assembly in Embodiment 1:

[0089] 1.1 Use an excavator to dig a cutting box preparation groove;

[0090] 1.2 After placing the cutting box in the preparation groove, move the TPD method machine to the position of the preparation groove to complete the installation of the cutting box;

[0091] 1.3 The TPD method machine travels to a predetermined position for vertical excavation operations until the cutting box completely enters the formation, then unload the cutting box and return to the preparation groove;

[0092] 1.4 Repeat steps 1.2 and 1.3 to achieve step-by-step connection and synchronous excavation of multiple cutting boxes through alternating installation and excavation operations until the calibrated depth is reached.

[0093] Step 2: Layered cutting and injection of stabilizing fluid

[0094] 2.1 During vertical excavation, inject cutting fluid formed by mixing water and bentonite in a predetermined ratio through the cutting head synchronously; the composition of the cutting fluid belongs to the prior art and is not an innovation point of this case.

[0095] Step 3: Two-way cutting and stirring operation

[0096] 3.1 After the equipment cuts and advances a set distance in the forward direction, it moves in the reverse direction;

[0097] 3.2 During the reverse movement, stir the rock and soil generated by cutting, and continuously inject the cutting fluid at the same time.

[0098] Step 4: Construction of composite wall forming

[0099] 4.1 When the equipment moves forward again, perform secondary cutting and stirring, stop injecting the cutting fluid synchronously and switch to injecting cement slurry;

[0100] 4.2 Before the initial setting of the cement slurry, use a hoisting device to vertically implant the H-shaped steel into the formed continuous wall body;

[0101] 4.3 After the final setting of the cement slurry, form a composite underground continuous wall structure with both rigid support and anti-seepage functions.

[0102] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0103] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A TPD construction method machine, characterized in that, Comprising: A chassis system (105), a frame (106), a gantry system (107) and a chain cutter assembly (415); The frame (106) is mounted on the chassis system (105), the gantry system (107) is disposed on the frame (106), and the frame (106) and the gantry system (107) are connected by a front and rear tilt cylinder (109) for adjusting the front and rear tilt angles of the gantry system; the chain cutter assembly (415) is mounted on the lifting frame (121) of the gantry system (107); The chassis system (105) includes two sets of symmetrically arranged traveling assemblies, a connecting beam (101) connecting the two sets of traveling assemblies, and a mounting seat (122) for mounting a slide rail assembly; The frame (106) is connected to the chassis system (105) through a slide rail system (123), and is configured with a front and rear drive cylinder (124) to drive the frame (106) to slide relative to the chassis system (105); The gantry system (107) includes: A fixed gantry (116), hinged at the bottom to the frame (106), having a central shaft hole (201) in the middle and a plurality of strip-shaped shaft holes (202) centered on the central shaft hole (201); A rotating gantry (117), having a central shaft hole (201) in the middle and a plurality of secondary shaft holes (203) centered on the central shaft hole (201); A central rotating shaft tooling (118), passing through the central shaft holes (201) of the fixed gantry (116) and the rotating gantry (117); A plurality of secondary rotating shaft toolings (119), respectively passing through the strip-shaped shaft holes (202) of the fixed gantry (116) and the secondary shaft holes (203) of the rotating gantry (117); Left and right tilt cylinders (120), driving the rotating gantry (117) to rotate around the central rotating shaft tooling (118) for left and right tilt adjustment.

2. The TPD construction method machine according to claim 1, wherein, The traveling assembly of the chassis system (105) includes: A crawler frame (103), a crawler (111) disposed on the crawler frame (103) and a hydraulic motor (112); The hydraulic motors (112) are symmetrically arranged at the rear end of the crawler frame (103) to drive the crawler (111); A guide wheel (113) is installed at the front end of the crawler frame (103) to tension the crawler (111); Carrying wheels (110) are arranged along the length direction of the crawler frame (103) to support the crawler (111).

3. The TPD method machine according to claim 2, wherein: The mounting seat (122) is fixedly connected to the outer side surface of the crawler frame (103), and the mounting surface extends beyond the outer edge of the crawler (111); The mounting seat (122) is integrally formed with the crawler frame (103), and a plurality of mounting seats (122) are spaced apart on the outer side wall of the crawler frame (103), and the mounting surfaces are flush.

4. The TPD construction method machine according to claim 1, characterized in that, The slide rail system (123) includes: A guide rail assembly, including a guide rail (102) and a linear card slot (115); A guide seat (104), with a limiting plate (114) detachably connected in its chute (108); The guide rail (102) is embedded in the chute (108) of the guide seat (104), and the limiting plate (114) is snapped into the linear card slot (115); When the guide rail assembly slides relative to the guide seat (104), the limit plate (114) slides relative to the linear card slot (115), and the limit plate (114) restricts the guide rail (102) from disengaging from the chute (108). The guide seat (104) is fixedly connected to the chassis system (105), and the guide rail assembly is fixedly connected to the lower end of the vehicle frame (106).

5. The TPD construction method machine according to claim 4, wherein: An oil groove is provided on the bottom surface of the chute (108) of the guide seat (104), and the contact surface is lubricated through a grease hole. The guide rail (102) is L-shaped and forms a linear card slot (115) with the guide rail seat (126).

6. The TPD construction method machine according to claim 5, wherein: A through hole (307) is provided on the side wall of the guide seat (104), and the limit plate (114) is fixed to the inner side wall of the chute (108) through a fastener. End plates (308) are fixedly connected to both ends of the guide rail seat (126) and the guide rail (102).

7. The TPD construction method machine according to claim 1, wherein: There are two left and right inclination cylinders (120), which are respectively horizontally and parallelly arranged on the upper and lower sides of the central shaft hole (201), and the cylinder end and the output shaft end are respectively hinged to the corresponding connecting seats (204) of the fixed gantry (116) and the rotating gantry (117). The left and right orientations of the left and right inclination cylinders (120) on the upper and lower sides are the same. When one left and right inclination cylinder (120) pushes outward, the other left and right inclination cylinder (120) pulls back synchronously to realize the left and right inclination adjustment of the rotating gantry (117).

8. The TPD method machine according to claim 1, characterized in that, Both the central rotating shaft tooling (118) and the auxiliary rotating shaft tooling (119) include: A rotating shaft body (301), with a retaining ring (302) protruding radially outward at its first end, and an annular groove (303) formed by the inner concave of the outer surface at its second end. A washer (304) is sleeved on the first end of the rotating shaft body (301) and is located inside the retaining ring (302). After the rotating shaft body (301) passes through the corresponding shaft holes of the fixed gantry (116) and the rotating gantry (117), the washer (304) and the retaining ring (302) press against the gantry surface. A lock plate (305) is fixedly connected to the washer (304), and at least part of it is inserted into the annular groove (303) of the rotating shaft body (301).

9. The TPD construction method machine according to claim 8, wherein: There are two lock plates (305), and the two lock plates enclose an annular structure, and its inner ring is embedded in the annular groove (303). Threaded holes (306) are provided on the washer (304), through holes (307) are provided on the lock plate (305), and bolts pass through the through holes (307) and are fixedly connected to the threaded holes (306) to realize the fixation of the lock plate (305) and the washer (304).

10. The TPD construction method machine according to claim 8, wherein: An oil passage (309) is provided inside the rotating shaft body (301). The oil passage inlet (310) is opened on the end face of the first end of the rotating shaft body (301), and at least two oil passage outlets (311) are opened on the side of the rotating shaft body (301) between the washer (304) and the retaining ring (302). For the central rotating shaft tooling (118), its oil passage outlets (311) are respectively communicated with the oil grooves in the central shaft holes (201) of the fixed gantry (116) and the rotating gantry (117). For the auxiliary rotating shaft tooling (119), its oil passage outlets (311) are respectively communicated with the oil grooves in the strip-shaped shaft holes (202) of the fixed gantry (116) and the auxiliary shaft holes (203) of the rotating gantry (117).

11. The TPD construction method machine according to claim 1, wherein, The gantry system (107) further includes a top gantry (401), which is detachably connected to the top of the rotating gantry (117); the top gantry track (402) of the top gantry (401) is docked with the main body track (403) of the rotating gantry (117) to form a continuous track for the lifting frame (121) to move.

12. The TPD construction method machine according to claim 11, characterized in that: The rotating gantry (117) includes two parallel main frame longitudinal beams (404), and a main frame cross beam (410) connecting the upper ends of the two main frame longitudinal beams. The main body track (403) is symmetrically arranged on the outer side surfaces of the two main frame longitudinal beams (404). The top gantry (401) includes two parallel top gantry longitudinal beams (405), and a top gantry cross beam (411) connecting the upper ends of the two top gantry longitudinal beams. The lower ends of the top gantry longitudinal beams (405) are detachably connected to the upper ends of the main frame longitudinal beams (404), and the top gantry track (402) is symmetrically arranged on the outer side surfaces of the two top gantry longitudinal beams (405). A first flange (412) is provided at the upper end of the main frame longitudinal beam (404). A second flange (413) corresponding to the first flange (412) is provided at the lower end of the top gantry longitudinal beam (405). The first flange (412) and the second flange (413) are connected by bolts arranged in an annular array.

13. The TPD construction method machine according to claim 12, characterized in that: A positioning and mating structure is provided between the lower end of the top gantry track (402) and the upper end of the main body track (403). This positioning and mating structure includes: A plug post (406) vertically arranged on the lower end face of the top gantry longitudinal beam (405). A plug slot (407) correspondingly opened on the upper end face of the main frame longitudinal beam (404). When the top gantry (401) is connected to the upper end of the rotating gantry (117), the plug post (406) is inserted into the plug slot (407) to form track positioning.

14. The TPD construction method machine according to claim 13, characterized in that: The main body track (403) includes a first sliding column group (408) arranged on both sides of the outer side surface of the main frame longitudinal beam (404), and the top gantry track (402) includes a second sliding column group (409) arranged on both sides of the outer side surface of the top gantry longitudinal beam (405). The upper ends of the first sliding column group (408) and the lower ends of the second sliding column group (409) form a sleeve-type plug-in structure through the cooperation of the plug-in columns (406) and the plug-in grooves (407).

15. The TPD construction method machine according to claim 2, wherein, At least two connecting beams (101) are provided, which enclose the front end of the crawler frame (103) to form an equipment working area (414). The chain cutter assembly (415) is installed in this area and performs grooving cutting through the forward and backward sliding of the vehicle frame (106).

16. A construction method of a TPD construction machine, characterized in that, Adopt the TPD method machine according to any one of claims 1-15, and include the following steps: Step 1: Construction of embedded holes and installation of cutting boxes 1.1 Use an excavator to excavate a cutting box preparation groove. 1.2 After placing the cutting box in the preparation groove, the TPD method machine moves to the position of the preparation groove to complete the installation of the cutting box. 1.3 The TPD method machine travels to a predetermined position to perform vertical excavation operations. After the cutting box completely enters the formation, unload the cutting box and return to the preparation groove. 1.4 Repeat steps 1.2 and 1.3 to achieve the step-by-step connection and synchronous excavation of multiple cutting boxes through alternating installation and excavation operations until the calibrated depth is reached. Step 2: Layered cutting and injection of stabilizing fluid 2.1 During vertical excavation, inject a cutting fluid formed by mixing water and bentonite in a predetermined ratio synchronously through the cutting head. Step 3: Bidirectional cutting and stirring operation 3.1 The equipment cuts and travels a set distance in the forward direction and then moves in the reverse direction. 3.2 During the reverse travel process, stir the rock and soil generated by cutting, and continuously inject the cutting fluid. Step 4: Construction of composite wall formation 4.1 When the equipment travels forward again, perform secondary cutting and stirring, stop injecting the cutting fluid synchronously and switch to injecting cement slurry. 4.2 Before the initial setting of the cement slurry, use a hoisting device to vertically implant the H-shaped steel into the formed continuous wall. 4.3 After the final setting of the cement slurry, a composite underground continuous wall structure with both rigid support and anti-seepage functions is formed.

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