Inclined shaft TBM anti-backup steel structure

Abstract

The application discloses an inclined shaft TBM anti-backup steel structure which is arranged in an upper receiving chamber of an inclined shaft and comprises a first anti-backup assembly located at the back of a TBM walking wheel, the first anti-backup assembly comprising a first connecting frame and a first anti-backup frame, wherein when the TBM walking wheel walks forward, the limiting block is located at the rear end of the limiting hole, the TBM walking wheel does not contact the anti-backup inclined surface, when the TBM walking wheel walks reversely, the limiting block is located at the front end of the limiting hole, and the TBM walking wheel abuts against the anti-backup inclined surface. The application can achieve the purposes of not hindering normal walking and realizing real-time anti-backup and anti-slip in the TBM receiving process, does not need additional manual operation, and has the advantages of reliable operation, simple loading and unloading and high anti-backup sensitivity.

Description

Technical Field

[0001] This invention relates to the field of inclined shaft TBM construction technology. More specifically, this invention relates to an anti-backflow steel structure for inclined shaft TBMs. Background Technology

[0002] With the development of exploration and development conditions and the increasing demands, inclined shafts have gradually become important and common construction structures. They are characterized by steep inclination angles, large diameters, and long lengths, making construction difficult. The excavation of inclined shafts typically employs the drill-and-blast method, using a tunnel boring machine (TBM) to excavate a tunnel, followed by the installation of tunnel lining segments to form a cavern. During TBM construction, a launching device is installed in the launching cavern. After assembly, the device is adjusted and excavation begins. A receiving device is installed in the receiving cavern, and after reaching its position, it is disassembled and hoisted away. During TBM receiving, to prevent structural components from sliding back or even slipping, anti-backlash steel structures are usually installed. If anchor bolts are used to fix the anti-backlash steel structure to the invert arch, this structure is a fixed point and can only provide stopping power for a certain distance. It cannot address the issue of real-time stopping power during the receiving process. Therefore, there is an urgent need for an anti-backlash steel structure suitable for use in TBM receiving. Summary of the Invention

[0003] This invention provides a steel structure for preventing TBM rollback in inclined shafts. It can achieve the purpose of preventing rollback and slippage in real time without hindering the normal movement of the TBM during the receiving process, without requiring additional manual operation. It has the advantages of reliable operation, simple loading and unloading, and high rollback sensitivity.

[0004] To achieve these objectives and other advantages according to the present invention, a steel structure for preventing backflow in an inclined shaft TBM is provided, which is disposed in the upper receiving chamber of the inclined shaft, comprising:

[0005] The first anti-reverse assembly is located behind the TBM's traveling wheel. The first anti-reverse assembly includes a first connecting frame and a first anti-reverse bracket. The first connecting frame has an L-shaped structure, with its upper end hinged to the TBM traveling wheel frame and its lower end forming an anti-reverse slope facing the TBM traveling wheel. There is a pair of first anti-reverse brackets, symmetrically arranged on both sides of the TBM traveling wheel and the first connecting frame. One end of the first anti-reverse bracket is rotatably connected to the axle of the TBM traveling wheel, and the other end is provided with an elongated limiting hole. A limiting block is provided at the right angle of the first connecting frame. The first anti-reverse bracket and the first connecting frame are movably connected to the limiting block through the limiting hole. When the TBM traveling wheel travels in the forward direction, the limiting block is located at the rear end of the limiting hole, and the TBM traveling wheel does not contact the anti-reverse slope. When the TBM traveling wheel travels in the reverse direction, the limiting block is located at the front end of the limiting hole, and the TBM traveling wheel abuts against the anti-reverse slope.

[0006] Preferably, it also includes:

[0007] The second anti-reverse assembly is located in front of the TBM's traveling wheels. The second anti-reverse assembly includes a second anti-reverse frame and an anti-reverse plate. The upper end of the second anti-reverse frame is hinged to the TBM's traveling wheel frame, and the lower end is fixed to the anti-reverse plate. The surface of the anti-reverse plate facing the TBM's traveling wheels is a friction arc surface. The upper end of the anti-reverse plate is closer to the TBM's traveling wheels than the lower end. When the TBM's traveling wheels are moving in the forward direction, the upper end of the anti-reverse plate abuts against the TBM's traveling wheels, and the friction arc surface of the anti-reverse plate does not contact the TBM's traveling wheels. When the TBM's traveling wheels are moving in the reverse direction, the friction arc surface of the anti-reverse plate falls into the gap between the TBM's traveling wheels and the TBM's traveling wheel frame.

[0008] Preferably, the second backstop component further includes:

[0009] The second connecting frame has an L-shaped structure. The upper end of the second connecting frame is fixedly connected to the TBM walking wheel frame, and the lower end is provided with a mounting groove. The mounting groove includes a through first part and a second part. The open end of the first part forms an anti-reverse block insertion port. The first part is also provided with a sliding groove. The sliding groove is slidably connected to the slider. The upper end of the slider is provided with a positioning groove. The end of the first part is also provided with a pressure sensor. The open end of the second part forms a compressed gas inlet.

[0010] An anti-reverse block is disposed on the lower outer side of the anti-reverse plate. When the TBM travel wheel travels in the forward direction, the anti-reverse block does not contact the TBM travel wheel. When the TBM travel wheel travels in the reverse direction, the friction arc surface of the anti-reverse plate falls into the gap between the TBM travel wheel and the TBM travel wheel frame. The anti-reverse block is inserted into the mounting groove, and the slider is pushed to the positioning groove and communicates with the second part.

[0011] A positioning rod is disposed in the second part. The lower end of the positioning rod is provided with a positioning block. The upper end of the positioning rod and the inner wall of the second part are provided with an air bladder. The air bladder is connected to an air pump. When the pressure sensor is triggered, the air pump pumps gas into the air bladder, causing the positioning block to be inserted into the positioning groove.

[0012] Preferably, the second part has a reduced diameter section, the upper end of the positioning rod is an expanded diameter section, and a compression spring is provided between the expanded diameter section and the reduced diameter section. The air pump pumps gas into the airbag, and the compression spring is compressed.

[0013] Preferably, the first part is inclined, and the insertion end of the anti-reverse block is shaped to match it. When the TBM traveling wheel travels in the forward direction, the slider is located at the front end of the groove. When the TBM traveling wheel travels in the reverse direction, the slider is pushed backward by the anti-reverse block and slides to the positioning groove and communicate with the second part.

[0014] Preferably, it also includes:

[0015] The mounting shaft is detachably mounted on the TBM travel wheel frame. The first connecting bracket is inserted into the clamp hole through the lug and the clamp bracket is wrapped and mounted on the mounting shaft. The second connecting bracket is mounted on the mounting shaft through the sleeve. The second anti-reverse bracket is mounted on the sleeve through the hinge shaft.

[0016] The present invention has at least the following beneficial effects:

[0017] First, the present invention sets a first anti-backward component behind the TBM's walking wheels, so as to achieve the purpose of preventing backward and slippage in real time without hindering the normal movement of the TBM during the receiving process, without requiring additional manual operation, and has the advantages of reliable operation, simple installation and removal, and high anti-backward sensitivity.

[0018] Second, the first connecting frame connects the TBM traveling wheel frame and the first anti-reverse frame. The first connecting frame has a swing range through a hinge. The first anti-reverse frame connects the TBM traveling wheel and the first connecting frame. The first anti-reverse frame has a swing range through a movable connection. When the TBM traveling wheel moves forward, the first connecting frame is subjected to a backward frictional force. Under the action of the frictional force, it moves backward, which increases the distance between the anti-reverse ramp and the TBM traveling wheel, thus not interfering with the TBM traveling wheel. When the TBM traveling wheel moves in the opposite direction, the first connecting frame is subjected to a forward frictional force. Under the action of the frictional force, it moves forward, which decreases the distance between the anti-reverse ramp and the TBM traveling wheel until it comes into contact with it, interfering with the TBM traveling wheel and stopping its rotation. This achieves deceleration and forward movement during the TBM receiving process, preventing backward or reverse movement.

[0019] Third, the first connecting frame achieves a small-amplitude back-and-forth swing through a hinge. The anti-reverse slope gradually extends forward from top to bottom, so that when the TBM traveling wheel travels in the opposite direction, it gradually presses against the anti-reverse slope to achieve anti-reverse limit. The first anti-reverse frame is rotatably connected to the wheel axle of the TBM traveling wheel. Compared to the movement of the TBM traveling wheel, it does not rotate. When the TBM traveling wheel travels in the forward direction, under the action of forward friction, the limit block moves to the rear end of the limit hole. When the TBM traveling wheel travels in the reverse direction, under the action of backward friction, the limit block moves to the front end of the limit hole, which has a buffering effect and achieves a small-amplitude back-and-forth swing. The anti-reverse slope cooperates with the TBM traveling wheel.

[0020] Fourth, the second anti-reverse frame has a swing range through a hinge. The second anti-reverse frame is fixedly connected to the anti-reverse plate to achieve linkage. The anti-reverse plate is set with an arc surface structure facing the back of the TBM traveling wheel. Its curvature does not match the TBM traveling wheel. The upper end of the anti-reverse plate is close to the TBM traveling wheel and the lower end is far away from the TBM traveling wheel. The upper end of the anti-reverse plate is close to the TBM traveling wheel. When the TBM traveling wheel moves, it generates friction. When the TBM traveling wheel moves forward, the friction generated by the friction arc surface and the TBM traveling wheel overcomes its own weight, causing the second connecting frame to move forward. This increases the distance between the friction arc surface and the TBM traveling wheel, so as not to interfere with the TBM traveling wheel. When the TBM traveling wheel stops or moves in reverse, the second anti-reverse frame moves downward under its own weight. The friction arc surface falls into the gap between the TBM traveling wheel and the TBM traveling wheel frame. The friction generated by the friction arc surface and the TBM traveling wheel causes the second anti-reverse frame to move backward, interfering with the TBM traveling wheel and stopping its rotation. This achieves the TBM decelerating forward during the receiving process without stopping or even moving backward or in reverse.

[0021] Fifth, the second connecting frame is fixed to the TBM traveling wheel frame, facilitating the installation of the internal positioning rod assembly. The first part of the mounting slot is equipped with a slider, and the second part is equipped with a positioning rod. When the TBM traveling wheel moves in the forward direction, the anti-reverse block does not contact the slider. When the slider is not subjected to external force from the anti-reverse block, it does not abut against the end of the first part. When the TBM traveling wheel moves in the reverse direction, the anti-reverse block contacts and pushes the slider. When the slider is subjected to external force from the anti-reverse block, it abuts against the end of the first part, triggering a signal. The airbag is inflated with gas to create pressure. The upper end of the positioning rod acts as a movable bearing surface, driving the positioning rod downward. This causes the positioning block at the lower end of the positioning rod to insert into the positioning groove of the slider that has abutted against the end of the first part, achieving locking and improving the stability of the anti-reverse mechanism.

[0022] Sixth, a compression spring is installed on the positioning rod for quick reset. The reduced diameter section forms the contact surface of the compression spring. When the positioning rod moves downward, the compression spring is compressed. When the airbag is depressurized, the compression spring resets, causing the positioning rod to spring back until the positioning block leaves the positioning groove. The first part is tilted downward, allowing the slider to slide to the front end of the groove under its own weight and remain at that position without being pushed by the anti-reverse block, avoiding accidental activation and improving the accuracy of the structure. The mounting shaft facilitates the overall installation and disassembly of the anti-reverse steel structure. The first and second anti-reverse components are respectively mounted on the mounting shaft via structural components, facilitating the adjustment of the installation position and ensuring precise anti-reverse function.

[0023] Other advantages, objectives and features of the present invention will be apparent in part from the following description, and in part from the understanding of those skilled in the art through study and practice of the invention. Attached Figure Description

[0024] Figure 1 This is an installation diagram of one technical solution of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of one technical solution of the present invention;

[0026] Figure 3 For the present invention Figure 2 An enlarged diagram of A in the diagram. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0028] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0029] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials mentioned are commercially available. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0030] like Figures 1-3 As shown, the present invention provides a steel structure for preventing TBM backlash in inclined shafts, which is installed in the upper receiving chamber of the inclined shaft and includes:

[0031] The first anti-reverse assembly is located behind the TBM travel wheel 1. The first anti-reverse assembly includes a first connecting frame 3 and a first anti-reverse frame 4. The first connecting frame 3 has an L-shaped structure, with its upper end hinged to the TBM travel wheel frame 2 and its lower end forming an anti-reverse slope facing the TBM travel wheel 1. There is a pair of first anti-reverse frames 4, symmetrically arranged on both sides of the TBM travel wheel 1 and the first connecting frame 3. One end of the first anti-reverse frame 4 is rotatably connected to the wheel axle of the TBM travel wheel 1, and the other end is provided with a long strip-shaped limiting hole 5. A limiting block 6 is provided at the right angle of the first connecting frame 3. The first anti-reverse frame 4 and the first connecting frame 3 are movably connected to the limiting block 6 through the limiting hole 5. When the TBM travel wheel 1 travels in the forward direction, the limiting block 6 is located at the rear end of the limiting hole 5, and the TBM travel wheel 1 does not contact the anti-reverse slope. When the TBM travel wheel 1 travels in the reverse direction, the limiting block 6 is located at the front end of the limiting hole 5, and the TBM travel wheel 1 abuts against the anti-reverse slope.

[0032] In the above technical solution, a first anti-backward component is set behind the TBM walking wheel 1 to achieve the purpose of preventing backward and slippage in real time without hindering normal movement during the TBM receiving process. No additional manual operation is required, and it has the advantages of reliable operation, simple installation and removal, and high anti-backward sensitivity.

[0033] The upper end of the TBM walking wheel frame 2 is fixed to the main body of the TBM, and the lower end of the TBM walking wheel frame 2 wraps around the TBM walking wheel 1, forming a certain gap. The first connecting frame 3 connects the TBM walking wheel frame 2 and the first anti-reverse frame 4. The first connecting frame 3 has a swing range through a hinge. The first anti-reverse frame 4 connects the TBM walking wheel 1 and the first connecting frame 3. The first anti-reverse frame 4 has a swing range through a movable connection. When the TBM walking wheel 1 moves forward, the first connecting frame 3 is subjected to a backward frictional force. Under the action of the frictional force, it moves backward, which increases the distance between the anti-reverse slope and the TBM walking wheel 1, so as not to interfere with the TBM walking wheel 1. When the TBM walking wheel 1 moves in the opposite direction, the first connecting frame 3 is subjected to a forward frictional force. Under the action of the frictional force, it moves forward, which reduces the distance between the anti-reverse slope and the TBM walking wheel 1 to the point of contact, interfering with the TBM walking wheel 1 and stopping its rotation. This realizes that the TBM decelerates and moves forward during the receiving process and cannot move backward or in the opposite direction.

[0034] The first connecting frame 3 achieves a small-amplitude back-and-forth swing through a hinge. The anti-reverse slope gradually extends forward from top to bottom, so that when the TBM traveling wheel 1 travels in the opposite direction, it gradually presses against the anti-reverse slope to achieve anti-reverse limit. The first anti-reverse frame 4 is rotatably connected to the wheel axle of the TBM traveling wheel 1. Compared with the movement of the TBM traveling wheel 1, it does not rotate. When the TBM traveling wheel 1 travels in the forward direction, under the action of forward friction, the limit block 6 moves to the rear end of the limit hole 5. When the TBM traveling wheel 1 travels in the reverse direction, under the action of backward friction, the limit block 6 moves to the front end of the limit hole 5, which has a buffering effect and achieves a small-amplitude back-and-forth swing. The anti-reverse slope cooperates with the TBM traveling wheel 1.

[0035] Another technical solution also includes:

[0036] The second anti-reverse assembly is located in front of the TBM travel wheel 1. The second anti-reverse assembly includes a second anti-reverse frame and an anti-reverse plate 7. The upper end of the second anti-reverse frame is hinged to the TBM travel wheel frame 2, and the lower end is fixed to the anti-reverse plate 7. The surface of the anti-reverse plate 7 facing the TBM travel wheel 1 is a friction arc surface. The upper end of the anti-reverse plate 7 is closer to the TBM travel wheel 1 than the lower end. When the TBM travel wheel 1 travels in the forward direction, the upper end of the anti-reverse plate 7 abuts against the TBM travel wheel 1, and the friction arc surface of the anti-reverse plate 7 does not contact the TBM travel wheel 1. When the TBM travel wheel 1 travels in the reverse direction, the friction arc surface of the anti-reverse plate 7 falls into the gap between the TBM travel wheel 1 and the TBM travel wheel frame 2.

[0037] In the above technical solution, the second anti-reverse frame has a swing range through a hinge. The second anti-reverse frame is fixedly connected to the anti-reverse plate 7 to achieve linkage. The anti-reverse plate 7 is set with an arc surface structure facing the rear of the TBM traveling wheel 1. Its curvature does not match that of the TBM traveling wheel 1. The upper end of the anti-reverse plate 7 is close to the TBM traveling wheel 1, and the lower end is far away from the TBM traveling wheel 1. The upper end of the anti-reverse plate 7 is in contact with the TBM traveling wheel 1. When the TBM traveling wheel 1 moves in the forward direction, the friction force generated between the upper end of the anti-reverse plate 7 and the TBM traveling wheel 1 overcomes its own weight, so that the second anti-reverse frame... The forward movement increases the distance between the friction arc surface and the TBM traveling wheel 1, without interfering with the TBM traveling wheel 1. When the TBM traveling wheel 1 stops or moves in reverse, the second anti-reverse frame moves downward under its own weight, and the friction arc surface falls into the gap between the TBM traveling wheel 1 and the TBM traveling wheel frame 2. The friction force generated between the friction arc surface and the TBM traveling wheel 1 causes the second anti-reverse frame to move backward, interfering with the TBM traveling wheel 1 and stopping its rotation. This achieves deceleration and forward movement during the TBM receiving process, preventing it from stopping or even moving backward in reverse.

[0038] In another technical solution, the second backstop component further includes:

[0039] The second connecting frame 8 has an L-shaped structure. The upper end of the second connecting frame 8 is fixedly connected to the TBM walking wheel frame 2, and the lower end is provided with a mounting groove 9. The mounting groove 9 includes a through first part and a second part. The opening end of the first part forms an insertion port for the anti-reverse block 11. The first part is also provided with a sliding groove, which is slidably connected to the slider 10. The upper end of the slider 10 is provided with a positioning groove 15. The end of the first part is also provided with a pressure sensor. The opening end of the second part forms a compressed gas inlet.

[0040] The anti-reverse block 11 is located on the outer side of the lower end of the anti-reverse piece 7. When the TBM traveling wheel 1 travels in the forward direction, the anti-reverse block 11 does not contact the TBM traveling wheel 1. When the TBM traveling wheel 1 travels in the reverse direction, the friction arc surface of the anti-reverse piece 7 falls into the gap between the TBM traveling wheel 1 and the TBM traveling wheel frame 2. The anti-reverse block 11 is inserted into the mounting groove 9, and the slider 10 is pushed to the positioning groove 15 and communicates with the second part.

[0041] A positioning rod 12 is disposed in the second part. A positioning block 13 is provided at the lower end of the positioning rod 12. An air bladder 14 is provided at the upper end of the positioning rod 12 and the inner wall of the second part. The air bladder 14 is connected to an air pump. When the pressure sensor is triggered, the air pump pumps gas into the air bladder 14, causing the positioning block 13 to be inserted into the positioning groove 15.

[0042] In the above technical solution, the second connecting frame 8 is fixed to the TBM walking wheel frame 2, which facilitates the installation of the internal positioning rod 12 assembly. The first part of the mounting groove 9 is provided with a slider 10 and the second part is provided with a positioning rod 12. When the TBM walking wheel 1 moves forward, the anti-reverse block 11 does not contact the slider 10. When the slider 10 is not subjected to the external force of the anti-reverse block 11, it does not abut against the end of the first part. When the TBM walking wheel 1 moves in the opposite direction, the anti-reverse block 11 contacts and pushes the slider 10. When the slider 10 is subjected to the external force of the anti-reverse block 11, it abuts against the end of the first part, triggering a signal. The airbag 14 is inflated with gas to form pressure. The upper end of the positioning rod 12 acts as a movable bearing surface, driving the positioning rod 12 to move downward, so that the positioning block 13 at the lower end of the positioning rod 12 is inserted into the positioning groove 15 of the slider 10 that has abutted against the end of the first part, thereby achieving locking and improving the stability of the anti-reverse movement.

[0043] In another technical solution, the second part has a reduced diameter section, and the upper end of the positioning rod 12 is an expanded diameter section. A compression spring 16 is provided between the expanded diameter section and the reduced diameter section. The air pump pumps gas into the airbag 14, and the compression spring 16 is compressed. The compression spring 16 on the positioning rod 12 facilitates quick reset. The reduced diameter section forms the contact surface of the compression spring 16. When the positioning rod 12 moves downward, the compression spring 16 is compressed. When the airbag 14 is depressurized, the compression spring 16 resets, causing the positioning rod 12 to spring back until the positioning block 13 leaves the positioning groove 15.

[0044] In another technical solution, the first part is inclined, and the insertion end of the anti-reverse block 11 is shaped to match it. When the TBM traveling wheel 1 travels in the forward direction, the slider 10 is located at the front end of the groove. When the TBM traveling wheel 1 travels in the reverse direction, the slider 10 is pushed backward by the anti-reverse block 11 and slides to the positioning groove 15, which then connects with the second part. By tilting the first part downward, the slider 10 slides to the front end of the groove under its own weight and remains at that position without being pushed by the anti-reverse block 11, thus avoiding accidental activation and improving the accuracy of the structure.

[0045] Another technical solution also includes:

[0046] Mounting shaft 17 is detachably mounted on TBM walking wheel frame 2. The first connecting frame 3 is inserted into the clamp hole through the lug and the clamp frame is wrapped and mounted on the mounting shaft 17. The second connecting frame 8 is mounted on the mounting shaft 17 through the sleeve. The second anti-reverse frame is mounted on the sleeve through the hinge shaft.

[0047] In the above technical solution, the mounting shaft 17 is set to facilitate the overall installation and disassembly of the anti-reverse steel structure. The first anti-reverse component and the second anti-reverse component are respectively installed on the mounting shaft 17 through structural components, which facilitates the adjustment of the installation position and plays a precise anti-reverse role.

[0048] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0049] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A steel structure for preventing backlash in an inclined shaft TBM, which is installed in the upper receiving chamber of the inclined shaft, characterized in that, include: The first anti-reverse assembly is located behind the TBM's traveling wheel. The first anti-reverse assembly includes a first connecting frame and a first anti-reverse bracket. The first connecting frame has an L-shaped structure, with its upper end hinged to the TBM traveling wheel frame and its lower end forming an anti-reverse slope facing the TBM traveling wheel. There is a pair of first anti-reverse brackets, symmetrically arranged on both sides of the TBM traveling wheel and the first connecting frame. One end of the first anti-reverse bracket is rotatably connected to the wheel axle of the TBM traveling wheel, and the other end is provided with an elongated limiting hole. A limiting block is provided at the right angle of the first connecting frame. The first anti-reverse bracket and the first connecting frame are movably connected to the limiting block through the limiting hole. When the TBM traveling wheel travels in the forward direction, the limiting block is located at the rear end of the limiting hole, and the TBM traveling wheel does not contact the anti-reverse slope. When the TBM traveling wheel travels in the reverse direction, the limiting block is located at the front end of the limiting hole, and the TBM traveling wheel abuts against the anti-reverse slope. The second anti-reverse assembly is located in front of the TBM's traveling wheel. The second anti-reverse assembly includes a second anti-reverse frame and an anti-reverse plate. The upper end of the second anti-reverse frame is hinged to the TBM's traveling wheel frame, and the lower end is fixed to the anti-reverse plate. The surface of the anti-reverse plate facing the TBM's traveling wheel is a friction arc surface. The upper end of the anti-reverse plate is closer to the TBM's traveling wheel than the lower end. When the TBM's traveling wheel is moving in the forward direction, the upper end of the anti-reverse plate abuts against the TBM's traveling wheel, and the friction arc surface of the anti-reverse plate does not contact the TBM's traveling wheel. When the TBM's traveling wheel is moving in the reverse direction, the friction arc surface of the anti-reverse plate falls into the gap between the TBM's traveling wheel and the TBM's traveling wheel frame. The second backstop component also includes: The second connecting frame has an L-shaped structure. The upper end of the second connecting frame is fixedly connected to the TBM walking wheel frame, and the lower end is provided with a mounting groove. The mounting groove includes a through first part and a second part. The open end of the first part forms an anti-reverse block insertion port. The first part is also provided with a sliding groove. The sliding groove is slidably connected to the slider. The upper end of the slider is provided with a positioning groove. The end of the first part is also provided with a pressure sensor. The open end of the second part forms a compressed gas inlet. An anti-reverse block is disposed on the lower outer side of the anti-reverse plate. When the TBM travel wheel travels in the forward direction, the anti-reverse block does not contact the TBM travel wheel. When the TBM travel wheel travels in the reverse direction, the friction arc surface of the anti-reverse plate falls into the gap between the TBM travel wheel and the TBM travel wheel frame. The anti-reverse block is inserted into the mounting groove, and the slider is pushed to the positioning groove and communicates with the second part. A positioning rod is disposed in the second part. The lower end of the positioning rod is provided with a positioning block. The upper end of the positioning rod and the inner wall of the second part are provided with an air bladder. The air bladder is connected to an air pump. When the pressure sensor is triggered, the air pump pumps gas into the air bladder, causing the positioning block to be inserted into the positioning groove.

2. The inclined shaft TBM anti-reverse steel structure as described in claim 1, characterized in that, The second part has a reduced diameter section, and the upper end of the positioning rod is an expanded diameter section. A compression spring is provided between the expanded diameter section and the reduced diameter section. The air pump pumps gas into the airbag, and the compression spring is compressed.

3. The inclined shaft TBM anti-reverse steel structure as described in claim 1, characterized in that, The first part is inclined, and the insertion end of the anti-reverse block is shaped to match it. When the TBM traveling wheel moves in the forward direction, the slider is located at the front end of the groove. When the TBM traveling wheel moves in the reverse direction, the slider is pushed backward by the anti-reverse block and slides to the positioning groove and communicates with the second part.

4. The inclined shaft TBM anti-reverse steel structure as described in claim 1, characterized in that, Also includes: The mounting shaft is detachably mounted on the TBM travel wheel frame. The first connecting bracket is inserted into the clamp hole through the lug and the clamp bracket is wrapped and mounted on the mounting shaft. The second connecting bracket is mounted on the mounting shaft through the sleeve. The second anti-reverse bracket is mounted on the sleeve through the hinge shaft.

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