TRD chain cutter type underground diaphragm wall forming machine

Abstract

The invention discloses a TRD chain cutter type underground diaphragm wall forming machine, and relates to the field of underground foundation construction. The transverse frame is mounted on one side of the carrying vehicle body; the longitudinal supporting frame is installed on the side, away from the carrying vehicle body, of the transverse frame in a sliding mode, and the longitudinal supporting frame can horizontally move in the length direction of the transverse frame; the transverse supporting frame is slidably mounted on the side, away from the transverse frame, of the longitudinal supporting frame; according to the TRD chain cutter type underground diaphragm wall forming machine, a longitudinal supporting frame, a transverse supporting frame and a TRD main machine are pushed to move to the position above a preset box through a transverse movement driving piece, at the moment, the transverse movement driving piece drives a displacement plate to transversely move, and due to the fact that a first positioning block is in inserted connection and limiting with a first sliding base and a transverse frame at the moment, relative displacement cannot occur between the first sliding base and the transverse frame; when the displacement plate is pushed by the transverse movement driving part to slide along the inner wall of the transverse frame, the transmission mechanism is matched with the wheel set mechanism to realize further displacement of the sliding seat II along the length direction of the displacement plate; the displacement distance of the second sliding seat is doubled.

Description

Technical Field

[0001] The invention relates to underground foundation construction technology, and in particular to a TRD chain knife type underground continuous wall forming machine. Background Art

[0002] The TRD method is to insert a cutting box with a cutting chain and a cutter head that meets the designed depth into the ground through a TRD chain-knife underground continuous wall machine. While cutting longitudinally and pushing the cutter horizontally to form a groove, the chain drives the cutter to rotate up and down, and then inject cement slurry into the foundation to achieve full mixing and stirring with the original foundation to form a continuous wall of equal thickness underground. It is also called "mixed mixing wall underground continuous wall construction method". The TRD method is a complete set of equipment and construction methods that can continuously form walls in various soil layers and gravel layers. Its main features are continuous wall formation, flat surface, uniform thickness, and good wall uniformity. It is mainly used in various construction projects, underground projects, bank protection projects, dams, foundation reinforcement, anti-seepage treatment, etc.

[0003] The existing TRD chain knife underground continuous wall construction machines on the market need to connect a new cutting box in succession during the wall construction project, and lift the new cutting box to the top of the cutting box that has been deep in the groove through the hydraulic cylinder to complete the position docking and structural connection between the two, and then lift the connected cutting box and move it downward following the cutting operation of the cutting box. When the aforementioned wall construction machine is used to lift the cutting box to install the cutting box and lift the installed cutting box to move it downward, there is a situation where the load of the hydraulic cylinder is different when lifting one cutting box and lifting multiple cutting boxes. In order to ensure effective work, the hydraulic rod is enlarged to the maximum load, which will cause the hydraulic cylinder to waste power and reduce work efficiency when lifting one cutting box to move it downward. Summary of the invention

[0004] The object of the present invention is to provide a TRD chain knife underground continuous wall forming machine to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a TRD chain knife underground continuous wall forming machine, comprising a carrier body; A cross frame, which is mounted on one side of the carrier body; A longitudinal support frame is slidably mounted on a side of the cross frame away from the carrier body, and the longitudinal support frame can translate along the length direction of the cross frame; A transverse support frame, which is slidably mounted on a side of the longitudinal support frame away from the transverse frame; The TRD host is installed on a side of the transverse support frame away from the longitudinal support frame; The longitudinal driving member is hinged between the transverse support frame and the longitudinal support frame, and the longitudinal driving member can drive the transverse support frame and the TRD host to move up and down along the height direction of the longitudinal support frame, and also includes: Two drive components, which are fixedly installed in the TRD host and are used to drive the cutting box connected to the TRD host to perform cutting operations; A transverse driving member, which is hinged to the bottom of the cross frame; A positioning mechanism 1, which is installed in the horizontal frame; A multiplication mechanism is mounted in the cross frame and comprises: Two displacement plates are slidably mounted on the top and bottom of the inner cavity of the cross frame, and the transverse driving member can drive the two displacement plates to translate along the length direction of the cross frame; Two wheel assembly mechanisms are arranged between the two displacement plates, and the top and bottom of the wheel assembly mechanisms are rotatably connected to opposite sides of the two displacement plates respectively; Two transmission mechanisms, which are transmission-connected to the outer sides of the two wheel set mechanisms in a one-to-one correspondence; Slide 1 is fixedly connected to one end of each of the two transmission mechanisms and is slidably connected to both displacement plates. Positioning mechanism 1 can impose a limit on the position between slide 1 and the cross frame so that relative movement between slide 1 and the cross frame does not occur; The second slide seat is fixedly connected to the other ends of the two transmission mechanisms respectively, and is slidably connected to the two displacement plates, and is fixedly connected to one side of the longitudinal support frame.

[0006] Furthermore, the displacement plate at the bottom is connected to the transverse driving member through a connecting block, the bottom of the connecting block slides through the cross frame and extends to the outside of the cross frame, the two displacement plates are fixedly connected by a fixing block, and the longitudinal section of the connecting block is T-shaped.

[0007] Furthermore, the positioning mechanism 1 is a latch, which is fixedly connected to the slide seat 1 and the cross frame respectively.

[0008] Further, the positioning mechanism 1 is located on a side of the multiplication mechanism away from the longitudinal support frame, and the positioning mechanism 1 includes: A positioning block 1 is plugged into one side of the horizontal frame and is also plugged into one side of the sliding seat 1, and a slope 1 is provided on the top and bottom of the side of the positioning block 1 close to the sliding seat 1.

[0009] Furthermore, the first positioning mechanism also includes: A positioning column is fixedly mounted on one side of the positioning block 1 close to the slide seat 1, and one end of the positioning column slides through the slide seat 1 and extends to the outside thereof; The elastic member 1 is sleeved on the outer side of the positioning column, and its two ends are respectively fixedly connected to the positioning block 1 and the sliding seat 1.

[0010] Furthermore, two symmetrically arranged positioning mechanisms 2 are included, and both positioning mechanisms 2 include: Positioning block 2 is slidably mounted in slide seat 1. A side of positioning block 2 close to positioning block 1 is also provided with inclined surface 2 which can fit with inclined surface 1. Positioning block 1 can push positioning block 2 to perform vertical translation through inclined surface 1 cooperating with inclined surface 2. The second elastic member is fixedly installed between the second positioning block and the inner wall of the first sliding seat; The positioning groove is provided on one side of the displacement plate and can be plugged with the positioning block on the same side.

[0011] Furthermore, a control member is fixedly mounted on one side of the horizontal frame, and one side of the control member can abut against a side of the positioning block 1 away from the sliding seat 1; At the same time, when the positioning block 1 is translated to the limit stroke, the side of the positioning block 1 away from the slide seat 1 can be flush with the inner wall of the cross frame.

[0012] Furthermore, the carrier body comprises: A vehicle frame, which is fixedly connected to a side of the cross frame away from the longitudinal support frame; At least two running mechanisms are symmetrically mounted on both sides of the bottom of the frame; Four supporting mechanisms are installed at the four corners of the bottom of the frame.

[0013] Compared with the prior art, the present invention provides a TRD chain knife underground continuous wall machine. Through the synchronous rotation of two drive components, the two drive components of the TRD chain knife underground continuous wall machine rotate synchronously and are synchronously controlled; the drive component can accurately control the rotation speed and maintain synchronous rotation to avoid power waste and gear wear caused by a fast-speed motor driving a slow-speed motor. The driving wheel diverts half of the torque to the driven wheel, and there is an electrical connection between the two drive components to maintain synchronous rotation; traditional hydraulic drives are difficult to quickly determine whether the rotation speed is synchronized, waste power, and the gears are prone to wear; and electric control has a fast response, hydraulic control 0.5 seconds signal transmission, hydraulic nonlinearity; while electric control can reach one ten-thousandth of a second; saving energy, reducing wear, and improving cutting efficiency; The longitudinal support frame, the transverse support frame and the TRD host are pushed to the top of the preset box by the transverse driving member. At this time, the transverse driving member drives the displacement plate to move horizontally. Since the positioning block 1 is respectively plugged and limited between the slide seat 1 and the transverse frame at this time, there will be no relative displacement between the slide seat 1 and the transverse frame. When the displacement plate is pushed by the transverse driving member to slide along the inner wall of the transverse frame, the transmission mechanism cooperates with the wheel group mechanism to realize the further displacement of the slide seat 2 along the length direction of the displacement plate; it is used to double the displacement distance of the slide seat 2, accelerate the displacement of the slide seat 2 and the longitudinal support frame, and improve the working efficiency of the longitudinal support frame, the transverse support frame and the TRD host to dock and cut the box back and forth; The control component pushes the positioning block 1 to the limit stroke, and the positioning block 1 pushes the upper and lower positioning blocks 2 through its inclined surface 1, causing the two positioning blocks 2 to move away from each other in the height direction of the slide seat 1 until the positioning block 2 is inserted into the positioning groove; the transverse driving component pushes the longitudinal support frame, the transverse support frame, the TRD main machine and all the docked cutting boxes at the original speed to perform displacement excavation, thereby realizing the adjustment of the displacement rate of the TRD main machine and the cutting box, and at the same time effectively maintaining the workload of the transverse driving component itself, improving the control accuracy of the transverse driving component, and effectively avoiding the problem that the control accuracy of the transverse driving component is fixed and the doubling of the stroke leads to a decrease in the control accuracy of the lifting position of the cutting box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 A three-dimensional diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall local structure provided by an embodiment of the present invention; Figure 3 A three-dimensional diagram of the internal cross-sectional structure of a horizontal frame provided by an embodiment of the present invention; Figure 4 A three-dimensional diagram of the local structure of the transverse driving member, the multiplication mechanism and the control member provided in the embodiment of the present invention; Figure 5 A three-dimensional diagram of the local structure of the transverse driving member, the multiplying mechanism, the control member and the longitudinal support frame provided in an embodiment of the present invention; Figure 6 A vertical section partial structural stereogram of a cross frame and a control member provided in an embodiment of the present invention; Figure 7 The embodiment of the present invention provides Figure 6 A magnified view of middle; Figure 8 A schematic diagram of a state where the motion stroke of the transverse driving member and the multiplying mechanism are multiplied according to an embodiment of the present invention; Fig. 9 A three-dimensional diagram of the partial longitudinal section structure of the TRD host provided in an embodiment of the present invention.

[0016] Description of reference numerals: 1. Carriage body; 11. Vehicle frame; 12. Traveling mechanism; 13. Support mechanism; 2. Cross frame; 3. Cross support frame; 4. TRD host; 5. Longitudinal drive member; 6. Cross drive member; 7. Multiplication mechanism; 71. Displacement plate; 72. Wheel assembly mechanism; 73. Transmission mechanism; 74. Slide one; 75. Slide two; 8. Positioning mechanism one; 81. Positioning block one; 82. Positioning column; 83. Elastic member one; 9. Positioning mechanism two; 91. Positioning block two; 92. Elastic member two; 93. Positioning groove; 10. Control member; 14. Longitudinal support frame. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0018] See also Figure 1-Figure 5 and Figure 8-Figure 9 , a TRD chain knife type underground continuous wall forming machine, comprising a carrier body 1; A cross frame 2, which is installed on one side of the carrier body 1; A longitudinal support frame 14 is slidably mounted on a side of the cross frame 2 away from the vehicle body 1, and the longitudinal support frame 14 can translate along the length direction of the cross frame 2; A transverse support frame 3, which is slidably mounted on a side of the longitudinal support frame 14 away from the transverse frame 2; The TRD host 4 is installed on a side of the transverse support frame 3 away from the longitudinal support frame 14; The longitudinal driving member 5 is hinged between the transverse support frame 3 and the longitudinal support frame 14. The longitudinal driving member 5 includes but is not limited to a hydraulic rod, and the longitudinal driving member 5 is electrically connected to an external power supply and controlled by an external PLC programming program. The longitudinal driving member 5 can drive the transverse support frame 3 and the TRD host 4 to rise and fall along the height direction of the longitudinal support frame 14. The construction personnel drive the transport body 1 to the designated area, and start the transverse driving member 6 to push the longitudinal support frame 14, the transverse support frame 3 and the TRD host 4 to move above the preset box, and then start the longitudinal driving member 5. The longitudinal driving member 5 contracts and drives the transverse support frame 3 and the TRD host 4 to move down to the top of the cutting box and completes the connection between the TRD host 4 and the cutting box through the docking of workers or construction equipment.

[0019] It also includes: two drive components, which are fixedly installed in the TRD main engine 4 and are used to drive the cutting box that has been docked with the TRD main engine 4 to perform cutting operations; the drive components include but are not limited to permanent magnet synchronous motors. By utilizing the synchronous rotation of the dual permanent magnet synchronous motors, the two permanent magnet synchronous motors of the TRD chain knife underground continuous wall forming machine rotate synchronously and are synchronously controlled; the permanent magnet synchronous motor can accurately control the speed and maintain synchronous rotation to avoid power waste and gear wear caused by a fast-speed motor driving a slow-speed motor. The driving wheel diverts half of the torque to the driven wheel, and the two permanent magnet synchronous motors are electrically connected to maintain synchronous rotation; traditional hydraulic drives are difficult to quickly determine whether the speed is synchronized, which wastes power and causes gear wear; In addition, electric control has a fast response, while hydraulic control has a signal transmission of 0.5 seconds. Hydraulics are nonlinear; while electric control can reach one ten-thousandth of a second; it saves energy, reduces wear and improves cutting efficiency.

[0020] The longitudinal driving member 5 extends to lift the transverse support frame 3, the TRD main machine 4 and the cutting box that has been docked, and starts the transverse driving member 6 to push the longitudinal support frame 14, the transverse support frame 3 and the TRD main machine 4 to the pre-excavation area, and further moves the transverse support frame 3, the TRD main machine 4 and the cutting box downward to perform longitudinal excavation of the pre-excavation area through the downward contraction of the longitudinal driving member 5.

[0021] A transverse driving member 6 is hinged to the bottom of the transverse frame 2, the transverse driving member 6 includes but is not limited to a hydraulic rod, and the transverse driving member 6 is electrically connected to an external power source and is controlled by an external PLC programming program; A positioning mechanism 8, which is installed in the horizontal frame 2; The multiplication mechanism 7 is installed in the cross frame 2 and comprises: Two displacement plates 71 are slidably mounted on the top and bottom of the inner cavity of the cross frame 2. The transverse driving member 6 can drive the two displacement plates 71 to translate along the length direction of the cross frame 2; Two wheel assembly mechanisms 72, which are arranged between the two displacement plates 71, and the top and bottom of the wheel assembly mechanisms 72 are respectively rotatably connected to the opposite sides of the two displacement plates 71, and the wheel assembly mechanisms 72 include but are not limited to large transmission wheels or large transmission sprockets, and the large transmission wheels include but are not limited to MichaudChailly's A9-21T5-20F transmission wheels, and the large transmission sprockets include but are not limited to 40A-20 tooth double-row sprockets, 45# steel large pitch single-row sprockets, and 304 stainless steel large sprockets; Two transmission mechanisms 73, which are connected to the outer sides of the two wheel assembly mechanisms 72 in a one-to-one manner, and the transmission mechanism 73 includes but is not limited to a large transmission cable or a large transmission chain, and the large transmission cable includes but is not limited to a 6×19S+FC / IWRC transmission wire rope, and the large transmission chain includes but is not limited to a series A chain of models such as 16A, 20A, and 24A; The slide 1 74 is fixedly connected to one end of the two transmission mechanisms 73 respectively, and is slidably connected to the two displacement plates 71. The positioning mechanism 1 8 can impose a limit between the slide 1 74 and the cross frame 2, so that the slide 1 74 and the cross frame 2 do not move relative to each other; The second slide seat 75 is fixedly connected to the other ends of the two transmission mechanisms 73 , and is slidably connected to the two displacement plates 71 , and is fixedly connected to one side of the longitudinal support frame 14 .

[0022] The bottom displacement plate 71 is connected to the transverse driving member 6 through a connecting block, the connecting block is hinged to the output end of the transverse driving member 6, the bottom of the connecting block slides through the cross frame 2 and extends to the outside of the cross frame 2, the two displacement plates 71 are fixedly connected by a fixing block, and the longitudinal section of the connecting block is T-shaped.

[0023] The positioning mechanism 8 is a latch, which is fixedly connected to the slide seat 74 and the cross frame 2 respectively.

[0024] The carrier body 1 comprises: The frame 11 is fixedly connected to the side of the cross frame 2 away from the longitudinal support frame 14; At least two running mechanisms 12 are symmetrically mounted on both sides of the bottom of the frame 11, and the running mechanism 12 is a crawler-driven chassis; Four supporting mechanisms 13 are installed at the four corners of the bottom of the frame 11 . The supporting mechanisms 13 are supporting feet or supporting seats of the working vehicle. Example

[0025] See also Figure 1-Figure 9 This embodiment provides a technical solution based on the first embodiment: the positioning mechanism 8 in the first embodiment is replaced by the latch: The positioning mechanism 1 8 is located on the side of the multiplication mechanism 7 away from the longitudinal support frame 14, and the positioning mechanism 1 8 includes: A positioning block 81 is plugged into one side of the cross frame 2 and is also plugged into one side of a slide seat 74, and a slope 1 is provided on the top and bottom of the positioning block 81 close to the slide seat 74, and a roller needle (not shown in the figure) can be provided on the side of the slope 1 or the slope 2 to reduce the friction between the slope 1 or the slope 2.

[0026] The positioning mechanism 8 also includes: A positioning column 82 is fixedly mounted on one side of the positioning block 81 close to the slide 74, and one end of the positioning column 82 slides through the slide 74 and extends to the outside thereof; The elastic member 83 is sleeved on the outer side of the positioning column 82, and its two ends are respectively fixedly connected to the positioning block 81 and the sliding seat 74. The elastic member 83 includes but is not limited to a spring.

[0027] At the same time, the TRD chain knife underground continuous wall forming machine also includes two symmetrically arranged positioning mechanisms 29, and the two positioning mechanisms 29 both include: The second positioning block 91 is slidably mounted in the first slide seat 74. The second positioning block 91 is also provided with a second inclined plane that can fit with the first inclined plane on the side close to the first positioning block 81. The first inclined plane cooperates with the second inclined plane to push the second positioning block 91 to perform vertical translation. The second elastic member 92 is fixedly installed between the second positioning block 91 and the inner wall of the first slide seat 74. The second elastic member 92 includes but is not limited to a spring; The positioning groove 93 is provided on one side of the displacement plate 71 and can be plugged into the second positioning block 91 on the same side.

[0028] A control member 10 is fixedly mounted on one side of the cross frame 2. The control member 10 includes but is not limited to a hydraulic rod or an electric telescopic push rod, and the control member 10 is electrically connected to an external power source and is controlled by an external PLC programming program; and one side of the control member 10 can abut against a side of a positioning block 81 away from a slide 74, that is, the end of the output end of the hydraulic rod or the electric telescopic push rod abuts against the positioning block 81; At the same time, when the positioning block 81 is translated to the limit stroke, the side of the positioning block 81 away from the slide 74 can be flush with the inner wall of the cross frame 2, and the side of the positioning block 81 away from the slide 74 can also be provided with a ball (not shown in the figure), so as to reduce the friction between the positioning block 81 and the inner wall of the cross frame 2.

[0029] When the cutting boxes have been docked to the preset number and need to be moved horizontally as a whole to open the trench; at this time, the slide 74 is reset to the top of the positioning groove 93, and the construction personnel start the control part 10. After the control part 10 is started, it pushes the positioning block 81 to the limit stroke, that is, the side of the positioning block 81 away from the slide 74 is flush with the inner wall of the cross frame 2. At this time, the positioning block 81 pushes the upper and lower positioning blocks 91 through its inclined surface 1, causing the two positioning blocks 91 to move away from each other in the height direction of the slide 74 until the positioning block 91 is inserted into the positioning groove 93; then when the construction personnel start the transverse driving part 6, the transverse driving part 6 pushes the longitudinal support frame 14, the transverse support frame 3, the TRD mainframe 4 and all the docked cutting boxes at the original speed for displacement excavation.

[0030] Working principle: When in use, the construction worker first drives the carrier body 1 to the designated area, and starts the transverse driving member 6 to push the longitudinal support frame 14, the transverse support frame 3 and the TRD host 4 to the top of the preset box, and then starts the longitudinal driving member 5. The longitudinal driving member 5 contracts and drives the transverse support frame 3 and the TRD host 4 to move down to the top of the cutting box, and completes the connection between the TRD host 4 and the cutting box through the docking of workers or construction equipment; Then the longitudinal driving member 5 extends to drive the transverse support frame 3, the TRD mainframe 4 and the already docked cutting box to be lifted, and the transverse driving member 6 is started to push the longitudinal support frame 14, the transverse support frame 3 and the TRD mainframe 4 to move to the pre-excavation area, and further the longitudinal driving member 5 moves downward and contracts to drive the transverse support frame 3, the TRD mainframe 4 and the cutting box to move downward to longitudinally excavate the pre-excavation area; When the cutting box is excavated to a height slightly above the ground at the top, the workers connect and separate the cutting box and the TRD mainframe 4, and then the construction personnel start the transverse driving member 6 to push the longitudinal support frame 14, the transverse support frame 3 and the TRD mainframe 4 to move to the top of the preset box. At this time, the transverse driving member 6 drives the displacement plate 71 to move horizontally. Since the positioning block 1 81 is respectively plugged and limited between the slide 1 74 and the cross frame 2, there will be no relative displacement between the slide 1 74 and the cross frame 2. When the displacement plate 71 is pushed by the transverse driving member 6 to slide along the inner wall of the cross frame 2, the transmission mechanism 73 cooperates with the wheel group mechanism 72 to realize the further displacement of the slide 2 75 along the length direction of the displacement plate 71. At this point, when the transverse driving member 6 drives the displacement plate 71 to move, the displacement distance of the slide 2 75 is doubled, thereby accelerating the displacement of the slide 2 75 and the longitudinal support frame 14, thereby improving the efficiency of the longitudinal support frame 14, the transverse support frame 3 and the TRD host 4 in docking the cutting box back and forth.

[0031] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A TRD chain knife type underground continuous wall forming machine, comprising a carrier body (1); A cross frame (2) mounted on one side of the carrier body (1); A longitudinal support frame (14) is slidably mounted on a side of the cross frame (2) away from the carrier body (1), and the longitudinal support frame (14) is capable of translational movement along the length direction of the cross frame (2); A transverse support frame (3) which is slidably mounted on a side of the longitudinal support frame (14) away from the transverse frame (2); A TRD host (4) is mounted on a side of the transverse support frame (3) away from the longitudinal support frame (14); The longitudinal driving member (5) is hinged between the transverse support frame (3) and the longitudinal support frame (14), and the longitudinal driving member (5) is capable of driving the transverse support frame (3) and the TRD mainframe (4) to move up and down along the height direction of the longitudinal support frame (14), and is characterized in that: Also includes: Two drive assemblies, which are fixedly installed in the TRD mainframe (4) and are used to drive the cutting box connected to the TRD mainframe (4) to perform cutting operations; A transverse driving member (6) hinged to the bottom of the transverse frame (2); A positioning mechanism (8) installed in the horizontal frame (2); A multiplication mechanism (7) is installed in the cross frame (2) and comprises: Two displacement plates (71) are slidably mounted on the top and bottom of the inner cavity of the cross frame (2), and the transverse driving member (6) is capable of driving the two displacement plates (71) to translate along the length direction of the cross frame (2); Two wheel assembly mechanisms (72) are arranged between the two displacement plates (71), and the top and bottom of the wheel assembly mechanisms are rotatably connected to opposite sides of the two displacement plates (71) respectively; Two transmission mechanisms (73) are transmission-connected to the outer sides of the two wheel set mechanisms (72) in a one-to-one correspondence; A slide seat (74) is fixedly connected to one end of each of the two transmission mechanisms (73) and is slidably connected to both of the two displacement plates (71); a positioning mechanism (8) is capable of limiting the position between the slide seat (74) and the cross frame (2) so that no relative movement occurs between the slide seat (74) and the cross frame (2); The second slide seat (75) is fixedly connected to the other ends of the two transmission mechanisms (73) respectively, is slidably connected to the two displacement plates (71), and is fixedly connected to one side of the longitudinal support frame (14).

2. A TRD chain knife underground continuous wall forming machine according to claim 1, characterized in that: The displacement plate (71) at the bottom is connected to the transverse driving member (6) via a connecting block, the bottom of the connecting block slides through the transverse frame (2) and extends to the outside of the transverse frame (2), the two displacement plates (71) are fixedly connected via a fixing block, and the longitudinal section of the connecting block is T-shaped.

3. A TRD chain knife underground continuous wall forming machine according to claim 1, characterized in that: The positioning mechanism 1 (8) is a latch pin, which is fixedly connected to the slide seat 1 (74) and the cross frame (2) respectively.

4. A TRD chain knife underground continuous wall forming machine according to claim 1, characterized in that: The positioning mechanism one (8) is located on a side of the multiplication mechanism (7) away from the longitudinal support frame (14), and the positioning mechanism one (8) comprises: A positioning block (81) is plugged into one side of the cross frame (2) and is also plugged into one side of the slide seat (74), and a slope (1) is provided at the top and bottom of the positioning block (81) near the slide seat (74).

5. A TRD chain knife underground continuous wall forming machine according to claim 4, characterized in that: The positioning mechanism 1 (8) further comprises: A positioning column (82) is fixedly mounted on a side of the positioning block (81) close to the slide seat (74), and one end of the positioning column (82) slides through the slide seat (74) and extends to the outside thereof; An elastic member 1 (83) is sleeved on the outer side of the positioning column (82), and its two ends are respectively fixedly connected to the positioning block 1 (81) and the sliding seat 1 (74).

6. A TRD chain knife underground continuous wall forming machine according to claim 4, characterized in that: It also includes two symmetrically arranged positioning mechanisms (9), each of which includes: A second positioning block (91) is slidably mounted in the first slide seat (74), and a second inclined surface that can fit with the first inclined surface is also provided on the side of the second positioning block (91) close to the first positioning block (81), and the first positioning block (81) can push the second positioning block (91) to move vertically by the first inclined surface cooperating with the second inclined surface; Elastic member 2 (92) is fixedly mounted between positioning block 2 (91) and the inner wall of slide seat 1 (74); The positioning groove (93) is provided on one side of the displacement plate (71) and can be plugged into the second positioning block (91) on the same side.

7. A TRD chain knife underground continuous wall forming machine according to claim 4, characterized in that: A control member (10) is fixedly mounted on one side of the cross frame (2), and one side of the control member (10) is capable of abutting against a side of the positioning block 1 (81) away from the slide seat 1 (74); At the same time, when the positioning block 1 (81) is translated to the limit stroke, the side of the positioning block 1 (81) away from the slide seat 1 (74) can be flush with the inner wall of the cross frame (2).

8. A TRD chain knife underground continuous wall forming machine according to claim 1, characterized in that: The carrier body (1) comprises: A vehicle frame (11) fixedly connected to a side of the cross frame (2) away from the longitudinal support frame (14); At least two running mechanisms (12) are symmetrically mounted on two sides of the bottom of the frame (11); Four supporting mechanisms (13) are installed at four corners of the bottom of the vehicle frame (11).

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