TPD construction method machine and construction method thereof

Abstract

The invention relates to the technical field of underground diaphragm wall construction equipment, in particular to a TPD construction method machine and a construction method thereof, and the TPD construction method machine comprises a chassis system, a frame, a portal frame system and a chain cutter assembly. The frame is installed on the chassis system, and the portal frame system is arranged on the frame and connected with the frame through front and back inclination angle oil cylinders. And the chain cutter assembly is arranged on a lifting frame of the portal frame system. The chassis system is composed of two walking assemblies, a connecting beam and a mounting base, and the frame is connected with the chassis through the sliding rail system and provided with front and back driving oil cylinders. The portal frame system is composed of a fixed portal frame and a rotating portal frame, and comprises a center rotating shaft tool, an auxiliary rotating shaft tool, a left inclination angle oil cylinder and a right inclination angle oil cylinder which are used for adjusting the inclination angle of the rotating portal frame. According to the scheme, the perpendicularity control precision of the chain cutter assembly and the inclination angle adjusting capacity of the portal frame system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of diaphragm wall construction equipment, and particularly relates 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 has the English name Trenchcutting Plastic pile-mixing Deep wall method. This construction method is based on the TRD method (full name TrenchCutting Re-mixing Deep Wall Method) and adds a polymer impervious board, which 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: It is unable to actively adjust the left and right tilting 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 lightest case, it will cause leakage at the wall joints, and in the most serious 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, but such methods are cumbersome to operate, inefficient, and difficult to adapt to dynamic construction requirements, seriously restricting the grooving accuracy and construction efficiency.

[0004] 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 during 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 closed lubrication structure of the slide rail system is prone to accelerated wear due to the intrusion of sediment, and the length of the guide rail is fixed and the modular expansion ability is insufficient, further restricting 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, spatial adaptability, and reliability, and there is an urgent need to achieve breakthroughs through systematic innovation. Summary of the Invention

[0005] The purpose of this 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.

[0006] The present application provides a TPD construction method machine, and the technical solution is as follows: A TPD construction method 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 assemblies, a connecting beam connecting the two traveling assemblies, 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 to the vehicle frame at the bottom, with a central shaft hole and a plurality of strip-shaped shaft holes centered on the central shaft hole in the middle; a rotating gantry, with a central shaft hole and a plurality of secondary shaft holes centered on the central shaft hole in the middle; 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.

[0007] Further, the present application also proposes that The traveling assembly of the chassis system includes: - A crawler frame, a crawler provided on the crawler frame, and a hydraulic motor; - The hydraulic motors are symmetrically arranged at the rear end of the crawler frame to drive the crawler; - A guide wheel is installed at the front end of the crawler frame to tension the crawler; - The idler wheels are arranged along the length direction of the crawler frame to support the crawler.

[0008] 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.

[0009] 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.

[0010] Further, the present application also proposes that an oil groove is provided on the bottom surface of the sliding groove of the guide 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.

[0011] . Further, the present application also proposes that a through hole is provided on the side wall of the guiding seat, and the limiting plate is fixed to the inner side wall of the sliding groove by a fastener; end plates are fixedly connected to both ends of the guide rail and the guide rail seat.

[0012] . Further, the present application also proposes that there are two left and right inclination cylinders, which are respectively horizontally and parallelly arranged on the upper and lower sides of the central shaft hole, and the cylinder body end and the output shaft end are respectively hinged to the corresponding connecting seats of the fixed gantry and the rotating gantry; the left and right orientations of the left and right inclination cylinders on the upper and lower sides are the same. When one of the left and right inclination cylinders pushes outwards, the other left and right inclination cylinder pulls back synchronously to realize the left and right inclination adjustment of the rotating gantry, ensuring the consistency of the forces in two rotation directions and the data unity of the two cylinders during data acquisition.

[0013] . Further, the present application also proposes that both the central rotating shaft tooling and the auxiliary rotating shaft tooling include a rotating shaft body, a retaining ring protruding radially outwards is provided at the first end thereof, and an annular groove is formed by the inner concave of the outer surface at the second end; a washer is sleeved on the first end of the rotating shaft body and is 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 are pressed against the gantry surface; a locking plate is fixedly connected to the washer and at least part of it is snapped into the annular groove of the rotating shaft body.

[0014] . Further, the present application also proposes that there are two locking plates, and the two locking plates enclose an annular 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.

[0015] . Further, the present application also proposes that an oil passage is provided inside the rotating shaft body, an 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 hole of the fixed gantry and the central shaft hole of 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.

[0016] . Further, 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. 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. The positioning and mating structure includes a plug column vertically arranged on the lower end face of the top frame longitudinal beam; a plug slot correspondingly opened on the upper end face 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.

[0017] Furthermore, the present application also proposes that the main body track includes a first sliding column group arranged 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 arranged 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.

[0018] 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 parts 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 parts of the two top frame longitudinal beams. The lower end part 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 in an annular array.

[0019] 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. The present application also relates to a construction method of a TPD method machine, which adopts the above TPD method machine and includes 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 until the cutting box completely enters the formation, then unloads the cutting box and returns to the preparation groove; 1.4 Repeat steps 1.2 and 1.3, and realize the step-by-step connection and synchronous downward 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 the vertical excavation process, inject a cutting fluid formed by mixing water and bentonite in a predetermined ratio through the cutting head synchronously; Step 3: Two-way cutting and mixing operation 3.1 After the equipment cuts and advances a set distance in the forward direction, it moves in the reverse direction; 3.2 During the reverse movement, the soil and rock cuttings are mixed, and the cutting fluid is continuously injected; Step 4: Construction of the composite wall formation 4.1 When the equipment moves forward again, secondary cutting and mixing are carried out, and the injection of the cutting fluid is stopped synchronously and switched to the injection of cement slurry; 4.2 Before the initial setting of the cement slurry, the H-shaped steel is vertically implanted into the formed continuous wall by using a hoisting device; 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.

[0020] As can be seen from the above, a TPD 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

[0021] Figure 1 It is a three-dimensional schematic diagram of a TPD method machine provided by the present application.

[0022] Figure 2 It is a side schematic diagram of a TPD method machine provided by the present application (the lifting frame and the chain cutter assembly are omitted in the figure).

[0023] Figure 3 It is a schematic diagram of the chassis system provided by the present application.

[0024] Figure 4 It is a schematic diagram of the frame installed on the chassis system provided by the present application.

[0025] Figure 5 It is a structural schematic diagram of the slide rail system provided by the present application.

[0026] Figure 6 It is an exploded schematic diagram of the slide rail system provided by the present application.

[0027] Figure 7 It is an assembled schematic diagram of the fixed gantry and the rotating gantry provided by the present application.

[0028] Figure 8 It is an exploded structural diagram of the central rotating shaft tooling provided by the present application.

[0029] Figure 9What is provided for this application is a structural sectional view of a central rotating shaft tooling.

[0030] Figure 10 What is provided for this application is a structural schematic diagram of a gantry system.

[0031] Figure 11 What is provided for this application is a structural schematic diagram of a fixed gantry.

[0032] Figure 12 What is provided for this application is a structural schematic diagram of a rotating gantry.

[0033] Figure 13 What is provided for this application is a three-dimensional structure diagram of a gantry system (without the top frame installed).

[0034] Figure 14 What is provided for this application is a three-dimensional schematic diagram of the disassembly and assembly of the top frame.

[0035] Figure 15 What is provided for this application is a front schematic diagram of the disassembly and assembly of the top frame. Detailed implementation manners

[0036] 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 having 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 a limitation of the present invention.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation of the present invention.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the 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 "plurality" is two or more, unless otherwise clearly defined.

[0039] In the present invention, unless otherwise clearly specified or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall 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 a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. 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.

[0040] In the present invention, unless otherwise clearly specified or limited, the first feature being "above" or "below" 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 other features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means 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 means that the horizontal height of the first feature is lower than that of the second feature. Embodiment 1

[0041] As Figures 1 - 15 shown, this embodiment provides a TPD construction machine, which includes a chassis system 105, a vehicle frame 106, a gantry system 107 and a chain cutter assembly 415. The vehicle frame 106 is installed on the chassis system 105, the gantry system 107 is arranged on the vehicle frame 106, and the chain cutter assembly 415 is installed on the lifting frame 121 of the gantry system 107.

[0042] As Figure 3 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 installing a slide rail assembly. Each set of traveling assemblies includes a crawler frame 103, a crawler 111 arranged 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. The outer side surface of the crawler frame 103 is fixedly connected with the mounting seat 122, and the mounting seat 122 protrudes beyond the outer edge of the crawler 111 to form a mounting surface for installing the slide rail assembly. In this solution, the hydraulic motors 112 are symmetrically arranged at the rear end of the crawler frame 103 for providing power output. The traveling assembly further includes a guide wheel 113 installed 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 keeping the force evenly distributed. The crawler 111 surrounds the guide wheel 113, the idler wheels 110 and the drive wheel of the hydraulic motor 112 to form a closed traveling structure.

[0043] The chassis system 105 provides stable basic support through two sets of symmetrically arranged traveling components and the connecting beam 101, ensuring the stability of the equipment under complex geological conditions. At least two connecting beams 101 are provided, and they enclose the front end of the crawler frame 103 to form the 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. This design ensures the stability and safety of the 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, improving the operation flexibility and working efficiency of the equipment. The equipment working area 414 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 tool operation status and working conditions, and facilitating the installation of the tool box and handling of emergencies during the working process, such as replacing damaged tools and replacing special cutter teeth, improving the maintainability and working efficiency of the equipment.

[0044] Furthermore, 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. This technical solution effectively reduces the distance between the two crawlers 111 by setting the mounting seat 122 on the outer side surface of the crawler frame 103 and making the mounting seat 122 extend beyond the outer edge of the crawler 111, making the chassis width smaller and more adaptable to special terrains with narrow roads, improving the movement flexibility and applicability of the equipment in narrow construction spaces. On the other hand, the mounting seats 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 project efficiency. Among them, the mounting seat 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 seat 122 is integrally formed with the crawler frame 103, further enhancing the connection stability and avoiding equipment shaking or displacement caused by loose connection. Multiple mounting seats 122 are arranged at intervals on the outer side wall of the crawler frame 103, and the mounting surfaces are flush. Multiple mounting seats 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 seats 122 and avoiding unstable equipment operation caused by uneven mounting surfaces.

[0045] The vehicle frame 106 is connected to the chassis system 105 through the slide rail system 123 and is equipped 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.

[0046] Among them, the guide rail assembly includes a guide rail 102 linearly arranged along the length direction, and a linear card slot 115 is formed on the guide rail 102 and arranged along its length direction. A sliding slot 108 is arranged inside the guide seat 104, and a limiting plate 114 is detachably connected to the slot opening of the sliding slot 108. The guide rail 102 in the guide rail assembly is embedded in the sliding slot 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 sliding slot 108. Among them, the limiting plate 114 can be fixed to the slot opening of the sliding slot 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.

[0047] Specifically, when the guide rail assembly slides relative to the guide seat 104, the cooperation between the limiting 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 sliding rail system 123 can maintain stability during operation and avoid equipment failures caused by the disengagement of the guide rail 102. In addition, since the limiting plate 114 is detachably connected to the slot opening of the sliding slot 108, when maintenance or replacement is required, the limiting plate 114 can be quickly removed, facilitating the operation. At the same time, the slot opening of the sliding slot 108 can be designed as an open structure with strong adaptability. In the face of harsh sediment working conditions, the completely open structure can directly flush the guide seat 104 and the guide rail 102, facilitating cleaning and lubrication, thereby further improving the maintenance efficiency of the sliding rail system 123. Thus, the technical solution of the present application solves the technical problem that the guide rail 102 in the sliding 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 sliding rail system 123.

[0048] Furthermore, the present application also proposes that 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; wherein, 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 embodiment, 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 chute 108, and the specific position is selected according to the actual installation space and lubrication effect. Through the communication 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 the 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.

[0049] As Figure 6 shown, the guide rail assembly further includes a guide rail seat 126 and end plates 308; the guide rail seat 126 is fixedly connected to the guide rail 102, and the end plates 308 are fixedly connected to both ends of the guide rail seat 126 and the guide rail 102. An installation groove is provided at the upper end of the guide rail seat 126, and one end of the guide rail 102 is fitted into the installation groove and fixed by a fixing 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 fitted. The fixing 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 seat 126, a linear card slot 115 is formed between the L-shaped guide rail 102 and the guide rail seat 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 seat 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 seat 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 seat 126 is more firm, reducing the risk of loosening or disengaging due to vibration or impact.

[0050] In Figure 5 and Figure 6In the shown solution, through holes 307 are constructed on the side wall of the guiding seat 104, and fasteners pass 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 fasteners can effectively fix the limiting plate 114. The fasteners can be bolts, screws 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 guiding seat 104 and the fasteners, the fixing of the limiting plate 114 in the sliding groove 108 is more firm, avoiding the loosening or falling off of the limiting plate 114 caused by sliding or impact. This design not only improves the stability and reliability of the slide rail system 123, but also can directly control the disassembly and assembly of the limiting plate 114 through the fasteners outside the guiding seat 104, making the installation and disassembly of the limiting plate 114 more convenient, and thus making the disassembly and assembly of the entire slide rail system 123 more convenient.

[0051] 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 formations 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. In the light case, it will cause leakage at the wall joints, and in the severe 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, but such methods are cumbersome to operate, have low efficiency, and are difficult to adapt to the dynamic construction requirements, seriously restricting the grooving accuracy and construction efficiency.

[0052] Therefore, as Figure 1 and Figure 2 and Figure 7 and Figures 10 - 13As shown in the figure, the gantry system 107 of this solution includes a fixed gantry 116, which is hinged to the vehicle frame 106 at the bottom. A front and rear tilt cylinder 109 is connected between the vehicle frame 106 and the fixed gantry 116. The two ends of the front and rear tilt cylinder 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 tilt angles of the gantry system 107. A central shaft hole 201 and a plurality of strip-shaped shaft holes 202 centered on the central shaft hole 201 are provided in the middle of the fixed gantry 116. A rotating gantry 117 is provided with a central shaft hole 201 and a plurality of auxiliary shaft holes 203 centered on the central shaft hole 201 in the middle. A central rotating shaft tooling 118 is inserted into the central shaft holes 201 of the fixed gantry 116 and the rotating gantry 117. A plurality of auxiliary rotating shaft toolings 119 respectively pass through the strip-shaped shaft holes 202 of the fixed gantry 116 and the auxiliary shaft holes 203 of the rotating gantry 117. The gantry system 107 is also provided with left and right tilt cylinders 120, which drive the rotating gantry 117 to rotate around the central rotating shaft tooling 118 for left and right tilt angle adjustment. In this solution, the layout of the central shaft holes 201 and the auxiliary 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 auxiliary rotating shaft tooling 119 can be further optimized to improve their durability and maintenance convenience. The number and arrangement mode of the left and right tilt cylinders 120 can be further optimized to improve the tilt angle adjustment accuracy and response speed of the rotating gantry 117.

[0053] 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 an auxiliary rotating shaft tooling 119. The left and right tilt cylinders 120 drive the rotating gantry 117 to rotate around the central rotating shaft tooling 118 to realize the left and right tilt angle 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 to ensure 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 auxiliary shaft hole 203 to realize rotation and tilt angle adjustment. The central rotating shaft tooling 118 serves as the rotation center of the rotating gantry 117 to ensure the stability of the rotating gantry 117 rotating around the fixed axis. The auxiliary rotating shaft tooling 119 adjusts the left and right tilt angles 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 tilt cylinders 120 drive the rotating gantry 117 to rotate and realize the tilt angle adjustment of the rotating gantry 117 through the movement of the auxiliary rotating shaft tooling 119 in the strip-shaped shaft hole 202, thereby solving the technical problem that it is difficult for the gantry system 107 to flexibly adjust the left and right tilt angles under complex geological conditions.

[0054] Furthermore, there are two left - right inclination cylinders 120, which are respectively arranged horizontally and in parallel on the upper and lower sides of the central shaft hole 201. 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 - right orientations of the left - right inclination cylinders 120 on the upper and lower sides are the same. When one left - right inclination cylinder 120 pushes outwards, the other left - right inclination cylinder 120 pulls back synchronously to achieve the adjustment of the left - right inclination of the rotating gantry 117. Specifically, the installation position and quantity of the left - right inclination cylinders 120 are two, located on the upper and lower sides of the central shaft hole 201 respectively. This layout ensures the balance and stability of the gantry system 107 during the left - right inclination adjustment. 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 inclination adjustment of the rotating gantry 117. Among them, the same left - right orientation of the hydraulic cylinders 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 are consistent. This design enables the hydraulic cylinders to work together during the pushing and pulling process, avoiding motion 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 - right inclination, improving the adaptability and construction accuracy of the equipment under complex geological conditions. Compared with the prior art, by setting two left - right inclination 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.

[0055] 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, at its first end there is a retaining ring 302 protruding radially outwards, and the outer surface of the second end is recessed to form an annular groove 303; 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 displacing during rotation. The locking plate 305 is fixedly connected to the washer 304 and further enhances the stability of the rotating shaft tooling by being snapped 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, this 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 design 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 material, 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 material, 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 design 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.

[0056] Furthermore, there are two or more locking plates 305, and multiple locking plates 305 enclose a ring structure, and its inner ring is embedded in the annular groove 303; the washer 304 is provided with a threaded hole 306, and the locking plate 305 is provided with a through hole 307, and 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 is enclosed by multiple pieces to form a ring structure, which enhances the integrity and stability of the locking plate 305, enabling it to be better embedded in the annular groove 303, thereby improving the fixing effect between the locking plate 305 and the washer 304. The washer 304 is provided with a threaded hole 306, and the locking plate 305 is provided with a through hole 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 ring 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 embedded in 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 ring 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 fixing effect, and can effectively improve the operation efficiency and service life of the equipment.

[0057] 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 groove can be optimized according to the specific application scenario to ensure that the lubricating oil can be evenly distributed and effectively lubricate the contact surface. The position of the oil passage outlet 311 between the washer 304 and the retaining ring 302 can be accurately butted with the oil groove through precision machining to avoid 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 and improves the lubrication effect at the same time. The reasonable design of the oil passage inlet 310 and the oil passage outlet 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 outlet 311 and the oil groove 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.

[0058] As Figure 14 and Figure 15As shown in the figure, the gantry system 107 further includes a top frame 401. A main body 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 body 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 body 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 design of the top frame 401, 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.

[0059] Further, a positioning and mating structure is provided between the lower end of the top frame track 402 and the upper end of the main body track 403. The positioning and mating structure includes a plugging column 406 vertically arranged on the lower end face of the top frame longitudinal beam 405, and a plugging groove 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 plugging column 406 is inserted into the plugging groove 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 plugging column 406 and the plugging groove 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 body track 403 by setting the positioning and mating structure of the plugging column 406 and the plugging groove 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 plugging 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 raised due to the plugging column 406 when the top frame 401 is removed.

[0060] As Figure 14 and Figure 15As shown, the rotating gantry 117 includes two main gantry longitudinal beams 404 arranged in parallel, 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 top gantry longitudinal beams 405 arranged in parallel, 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.

[0061] 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 in a circular array at the edge of the flange. 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, thus avoiding unstable connections caused by uneven tightening or 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.

[0062] 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 plugging structure through the cooperation of the plugging column 406 and the plugging groove 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 plugging column 406 and the plugging groove 407 to facilitate the smooth insertion of the plugging column 406 into the plugging groove 407. In addition, a locking mechanism, such as a spring pin or a bolt, can also be provided between the plugging column 406 and the plugging groove 407 to enhance the fixing effect after plugging. Thus, through the cooperation of the plugging column 406 and the plugging groove 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 plugging 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 plugging structure can effectively disperse the stress at the track docking place, reducing the track deformation or jamming phenomenon caused by uneven docking or loosening. 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 plugging structure, improving the construction efficiency and equipment reliability.

[0063] Such 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 groove 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 groove 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 groove and the track, the lifting frame 121 can move smoothly between the rotary gantry 117 and the top frame 401, avoiding the movement instability caused by discontinuous tracks or mismatched sliding pairs. Specifically, the inner contour of the C-shaped sliding groove 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 groove. 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.

[0064] 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 cutter 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 cutter box; while in height-limited scenarios, the top frame 401 can be removed for construction. Embodiment 2

[0065] 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.

[0066] Step 1: Construction of embedded holes and installation of cutting boxes. The cutting box is a component of the chain cutter assembly in Embodiment 1: 1.1 Use an excavator to dig a cutting box preparation groove; 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; 1.3 The TPD method machine advances 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; 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.

[0067] Step 2: Layered cutting and injection of stabilizing fluid 2.1 During the vertical excavation process, a cutting fluid formed by mixing water and bentonite in a predetermined ratio is injected synchronously through the cutting head; the composition of the cutting fluid belongs to the prior art and is not an innovation point of this case.

[0068] Step Three: Two-way cutting and stirring operation 3.1 After the equipment cuts and advances a set distance in the forward direction, it moves in the reverse direction; 3.2 During the reverse movement, the rock and soil generated by cutting are stirred, and at the same time, the cutting fluid is continuously injected.

[0069] Step Four: Construction of the composite wall forming 4.1 When the equipment moves forward again, secondary cutting and stirring are carried out, and the injection of the cutting fluid is stopped synchronously and switched to the injection of cement slurry; 4.2 Before the initial setting of the cement slurry, the H-shaped steel is vertically implanted into the formed continuous wall by using a hoisting device; 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.

[0070] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean 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.

[0071] 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 process machine, characterized in that: include: Chassis system (105), frame (106), portal system (107) and chain cutter assembly (415); The vehicle frame (106) is mounted on the chassis system (105), the portal system (107) is arranged on the vehicle frame (106), and the vehicle frame (106) and the portal system (107) are connected via a front and rear tilt angle cylinder (109) for adjusting the front and rear tilt angle of the portal system; the chain knife assembly (415) is mounted on a lifting frame (121) of the portal system (107); The chassis system (105) comprises two groups of symmetrically arranged traveling components, a connecting beam (101) connecting the two groups of traveling components, and a mounting seat (122) for mounting a slide rail component; The vehicle frame (106) is connected to the chassis system (105) via a slide rail system (123), and is provided with front and rear drive cylinders (124) to drive the vehicle frame (106) to slide relative to the chassis system (105); The gantry system (107) comprises: A fixed door frame (116) is hinged at the bottom to the vehicle frame (106), and is provided with a central shaft hole (201) and a plurality of strip shaft holes (202) centered on the central shaft hole (201) in the middle; A rotating gantry (117) having a central axis hole (201) and a plurality of secondary axis holes (203) centered on the central axis hole (201); A central rotating shaft tool (118) is inserted into the central shaft hole (201) of the fixed gantry (116) and the rotating gantry (117); A plurality of secondary rotating shaft fixtures (119), respectively passing through the strip shaft hole (202) of the fixed gantry (116) and the secondary shaft hole (203) of the rotating gantry (117); The left and right tilt angle oil cylinders (120) drive the rotating gantry (117) to rotate around the central rotating shaft tooling (118) to adjust the left and right tilt angles.

2. The TPD process machine according to claim 1, characterized in that: The traveling components of the chassis system (105) include: A crawler frame (103), a crawler track (111) and a hydraulic motor (112) arranged on the crawler frame (103); The hydraulic motor (112) is 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 track frame (103) to tension the track (111); The supporting wheels (110) are arranged along the length direction of the track frame (103) to support the track (111).

3. The TPD process machine according to claim 2, characterized in that: The mounting seat (122) is fixedly connected to the outer side surface of the crawler frame (103), and the mounting surface exceeds the outer edge of the crawler (111); The mounting seat (122) and the crawler frame (103) are integrally formed, and a plurality of mounting seats (122) are arranged at intervals on the outer side wall of the crawler frame (103), with mounting surfaces being flush with each other.

4. The TPD process machine according to claim 1, characterized in that: The slide rail system (123) comprises: A guide rail assembly, comprising a guide rail (102) and a linear slot (115); A guide seat (104) having a limit plate (114) detachably connected to the slide groove (108) thereof; The guide rail (102) is embedded in the slide groove (108) of the guide seat (104), and the limit plate (114) is inserted into the linear groove (115); When the guide rail assembly and the guide seat (104) slide relative to each other, the limit plate (114) and the linear slot (115) slide relative to each other, and the limit plate (114) limits the guide rail (102) from disengaging from the slide slot (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 process machine according to claim 4, characterized in that: An oil groove is provided on the bottom surface of the slide groove (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 slot (115) with the guide rail seat (126).

6. The TPD process machine according to claim 5, characterized in that: The side wall of the guide seat (104) is provided with a through hole (307), and the limiting plate (114) is fixed to the inner wall of the slide groove (108) by means of a fastener; The guide rail seat (126) and the guide rail (102) are fixedly connected to end plates (308) at both ends.

7. The TPD process machine according to claim 1, characterized in that: There are two left and right tilt cylinders (120), which are respectively arranged in parallel and transversely on the upper and lower sides of the central axis hole (201), and the cylinder ends and the output shaft ends are respectively hinged on the corresponding connecting seats (204) of the fixed gantry (116) and the rotating gantry (117); The left and right tilt cylinders (120) on the upper and lower sides have the same left and right orientations, and when one of the left and right tilt cylinders (120) is pushed outward, the other left and right tilt cylinder (120) is pulled back synchronously, so as to achieve left and right tilt adjustment of the rotating gantry (117).

8. The TPD process machine according to claim 1, characterized in that: The central rotating shaft fixture (118) and the secondary rotating shaft fixture (119) both include: A rotating shaft body (301), wherein a first end portion thereof is provided with a retaining ring (302) protruding radially outward, and an outer surface of a second end portion is concavely formed into an annular groove (303); 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) are pressed against the surface of the gantry; The locking plate (305) is fixedly connected to the washer (304) and is at least partially inserted into the annular groove (303) of the rotating shaft body (301).

9. The TPD process machine according to claim 8, characterized in that: The locking plates (305) are two pieces, and the two locking plates form an annular structure, the inner ring of which is embedded in the annular groove (303); The washer (304) is provided with a threaded hole (306), the locking plate (305) is provided with a through hole (307), and a bolt passes through the through hole (307) and is fixedly connected to the threaded hole (306), thereby achieving the fixation of the locking plate (305) and the washer (304).

10. The TPD process machine according to claim 8, characterized in that: An oil circuit (309) is provided inside the rotating shaft body (301); an oil circuit inlet (310) is provided on the end surface of the first end of the rotating shaft body (301); and at least two oil circuit outlets (311) are provided on the side surface of the rotating shaft body (301) between the washer (304) and the retaining ring (302); For the central rotating shaft fixture (118), its oil passage outlet (311) is respectively connected to the oil grooves in the central shaft hole (201) of the fixed gantry (116) and the central shaft hole (201) of the rotating gantry (117); For the secondary rotating shaft fixture (119), its oil passage outlet (311) is respectively connected to the oil grooves in the strip shaft hole (202) of the fixed gantry (116) and the secondary shaft hole (203) of the rotating gantry (117).

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

12. The TPD process machine according to claim 11, characterized in that: The revolving gantry (117) comprises two main frame longitudinal beams (404) arranged in parallel, and a main frame cross beam (410) connecting the upper ends of the two main frame longitudinal beams, and the main body track (403) is symmetrically arranged on the outer sides of the two main frame longitudinal beams (404); The top frame (401) comprises two top frame longitudinal beams (405) arranged in parallel, and a top frame cross beam (411) connecting the upper ends of the two top frame longitudinal beams, the lower ends of the top frame longitudinal beams (405) are detachably connected to the upper ends of the main frame longitudinal beams (404), and the top frame rails (402) are symmetrically arranged on the outer sides of the two top frame 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 frame longitudinal beam (405); The first flange (412) and the second flange (413) are connected via an annular array of bolts.

13. The TPD process machine according to claim 12, characterized in that: A positioning and matching structure is provided between the lower end of the top frame rail (402) and the upper end of the main body rail (403), and the positioning and matching structure comprises: A plug-in column (406) vertically arranged on the lower end surface of the top frame longitudinal beam (405); A corresponding insertion groove (407) is provided on the upper end surface of the main frame longitudinal beam (404); When the top frame (401) is connected to the upper end of the rotating door frame (117), the plug-in column (406) is inserted into the plug-in groove (407) to form a track positioning.

14. The TPD process 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 of the main frame longitudinal beam (404), and the top frame track (402) includes a second sliding column group (409) arranged on both sides of the outer side 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).

15. The TPD process machine according to claim 2, characterized in that: At least two connecting beams (101) are provided, and they are enclosed with the front end of the crawler frame (103) to form an equipment working area (414). The chain knife assembly (415) is installed in the area and performs groove cutting by sliding forward and backward of the vehicle frame (106).

16. A construction method of a TPD machine, characterized in that: The TPD process machine according to any one of claims 1 to 15 is used, and comprises the following steps: Step 1: Pre-buried hole construction and cutting box installation 1.1 Use an excavator to dig and form a cutting box preparation groove; 1.2 After placing the cutting box in the prepared groove, the TPD machine moves to the prepared groove position to complete the installation of the cutting box; 1.3TPD machine moves to the predetermined position to carry out vertical excavation operation until the cutting box completely enters the formation, then removes the cutting box and returns to the preparation slot; 1.4 Repeat steps 1.2 and 1.3 to achieve step-by-step connection and synchronous digging of multiple cutting boxes through alternating installation and excavation operations until the marked depth is reached; Step 2: Layered cutting and stabilizing fluid injection 2.1 During the vertical excavation process, a cutting fluid formed by mixing water and bentonite in a predetermined ratio is injected through the cutting head simultaneously; Step 3: Bidirectional cutting and mixing operation 3.1 The equipment cuts along the forward direction for a set distance and then moves in the reverse direction; 3.2 During the reverse movement, the rock and soil produced by cutting are stirred and the cutting fluid is continuously injected; Step 4: Composite wall forming construction 4.1 When the equipment moves forward again, secondary cutting and stirring are carried out, and the injection of cutting fluid is stopped simultaneously and switched to the injection of cement slurry; 4.2 Before the cement slurry begins to set, use lifting equipment to vertically implant the H-shaped steel into the formed continuous wall; 4.3 After the cement slurry has finally set, a composite underground continuous wall structure with both rigid support and anti-seepage functions is formed.

Images