Tunnel vault slag removal device

Abstract

A device for removing slag from a tunnel vault, wherein an impact seat driving device drives the impact seat to move to the rear end first, and then the impact seat driving device drives the impact seat to move forward, and the slag with different heights on the vault is impacted and removed by a shovel, so that the height of the slag after the vault is removed remains consistent, and then the cutter disc driving device drives the cutter disc to rotate, and each blade between the two cutter discs rotates, and the lifting seat driving device drives the lifting seat to a cutting height, and the arc-shaped blade cuts the slag on the tunnel vault, and then the platform driving device drives the platform to move forward, and the rotating blade completely removes the slag removed by the shovel, and since the height of the slag after removal is consistent, the cutting process is smooth, and the vibration during the cutting process can be absorbed by the compression spring of the buffer seat, thereby further improving the stability of the cutting process.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a tunnel vault slag removal device. Background Art

[0002] After the construction of the tunnel vault is completed, slag will be formed, so the slag area needs to be removed. The existing slag cleaning equipment uses a rotating tool to cut and scrape the slag. Since the height of the slag is different, the cutting force is constantly changing when cutting slag of different lengths, so it will produce alternating impact loads on the cutting tool, which not only affects the cutting smoothness, but also affects the life of the tool. Summary of the invention

[0003] In order to overcome the deficiencies of the above technologies, the present invention provides a device for improving the efficiency and reliability of removing false slag from a tunnel vault.

[0004] The technical solution adopted by the present invention to overcome the technical problems is:

[0005] A tunnel vault slag removal device comprises: two tracks, which are arranged parallel to each other and are laid in the tunnel along the tunnel extension direction;

[0006] The vehicle body has wheels rotatably mounted at the four corners of its lower end, and two wheels on the same side of the left and right ends of the vehicle body are rotatably arranged on the corresponding tracks on the same side;

[0007] A vehicle body driving device, arranged on the vehicle body, for driving the wheels to rotate;

[0008] A linear guide rail is horizontally arranged at the upper end of the vehicle body along the front-rear direction, and a pedestal is horizontally installed on the guide slider of the linear guide rail;

[0009] The platform driving device is arranged on the vehicle body and is used to drive the platform to move horizontally in the front-rear direction;

[0010] The lifting seat is horizontally arranged above the platform, and the lifting seat driving device is arranged on the platform to drive the lifting seat to move up and down;

[0011] The buffer seat is horizontally arranged above the lifting seat, and a guide rod II is vertically arranged on the lifting seat. The buffer seat is slidably sleeved on the guide rod II, and a spring is sleeved on the guide rod II. The upper end of the spring contacts the buffer seat, and the lower end of the spring contacts the lifting seat;

[0012] Two wall panels are parallel to each other and are respectively arranged at the left and right ends of the buffer seat in the vertical direction. A disc-shaped cutter disc is rotatably installed on the inner end of the wall panel through a bearing. The two cutter discs are coaxially arranged with each other, and the axis of the cutter disc is horizontally arranged in the left and right directions. N blades are arranged at intervals in the circumferential direction between the two cutter discs, where N is a positive integer greater than or equal to 3, and the blade is an arc-shaped structure, and its curvature matches the curvature of the tunnel vault;

[0013] A cutter disc driving device, used for driving the cutter disc to rotate;

[0014] Two vertical plates are parallel to each other and are respectively arranged on the left and right sides of the rear end of the vehicle body in the vertical direction. The inner ends of the vertical plates are provided with guide rails horizontally in the front-rear direction. The impact seat is arranged between the two vertical plates. The left and right ends thereof are slidably mounted on the guide rails on the same side. The front end of the impact seat is provided with a scraper with a triangular longitudinal section. The spacing between the two vertical plates is greater than the width of the pedestal, the lifting seat and the buffer seat; and

[0015] The impact seat driving device is used to drive the impact seat to move horizontally in the front-rear direction, and the virtual slag on the arch top is removed during the forward movement of the impact seat.

[0016] Furthermore, the vehicle body driving device includes a reducer II installed on one side of the vehicle body and a motor III drivingly connected to the input shaft of the reducer II, and the output shaft of the reducer II is coaxially connected to the corresponding wheel on the same side.

[0017] Furthermore, the pedestal driving device comprises a lead screw I which is rotatably mounted on the vehicle body at both ends through seat bearings, the axis of the lead screw I is parallel to the linear guide rail, a reducer I is mounted on the vehicle body, the output shaft of the reducer I is coaxially connected to the lead screw I, the input shaft of the reducer I is connected to the motor I, and the lead screw I is threadedly connected to the pedestal.

[0018] Furthermore, the above-mentioned lifting seat driving device includes a guide rod I vertically installed on the base, a worm gear reducer installed on the base, and a screw II arranged along the vertical direction, the upper end of the screw II is threadedly connected to the lifting seat, and the lower end is transmission connected to the output shaft of the worm gear reducer, and the input shaft of the worm gear reducer is transmission connected to the motor II.

[0019] Furthermore, the impact seat driving device includes two tension springs and two oil cylinders II, the front ends of the two tension springs are respectively connected to the left and right ends of the impact seat, and the rear ends thereof are connected to the vertical plate, the two oil cylinders II are respectively horizontally installed on the inner ends of the vertical plates on the same side, the piston rod head ends of the oil cylinder II are provided with M blocks at intervals along the circumferential direction, the left and right ends of the impact seat are respectively provided with through holes in the horizontal direction, and M barrier plates corresponding to the block are arranged at intervals along the circumferential direction in the through holes, when the piston rod of the oil cylinder II extends outward, the block contacts the front end of the barrier plate, the oil cylinder II pushes the impact seat to move toward the inner end and the tension spring is stretched, when the elastic force of the tension spring is greater than the resistance of the elastic deformation of the M barrier plates, the block causes the barrier plate to bend and deform and then move to the rear end of the barrier plate.

[0020] Furthermore, the above-mentioned cutter disc driving device includes a reducer III installed on the buffer seat and a motor IV drivingly connected to the input shaft of the reducer III, and the output shaft of the reducer III is drivingly connected to a cutter disc.

[0021] In order to prevent the vehicle body from moving, it also includes a cylinder I installed at the left and right ends of the vehicle body respectively. The axis of the cylinder I is horizontally arranged along the left and right directions. A rubber pad is arranged at the head end of the piston rod of the cylinder I. When the piston rod of the cylinder I is fully extended, the rubber pad contacts the tunnel side wall on the same side.

[0022] Preferably, the above-mentioned screw I is a forward and reverse rotation screw.

[0023] In order to improve the guiding performance, the lifting seat is provided with a guide sleeve I, which is sleeved on the corresponding guide rod I, and the buffer seat is provided with a guide sleeve II, which is sleeved on the corresponding guide rod II.

[0024] In order to facilitate the movement of the oil cylinder, a hydraulic station installed on the vehicle body is also included. The oil cylinder II and the oil cylinder I are connected to the oil pump of the hydraulic station through a reversing valve.

[0025] The beneficial effects of the present invention are as follows: the impact seat driving device drives the impact seat to move to the rear end first, and then the impact seat driving device drives the impact seat to move forward, and the virtual slag of different heights of the arch is impacted and removed by the shovel, so that the height of the virtual slag after the arch is removed is consistent, and then the cutter disc driving device drives the cutter disc to rotate, and each blade between the two cutter discs rotates, and the lifting seat driving device drives the lifting seat to the cutting height, and the arc-shaped blade cuts the virtual slag of the tunnel arch, and then the pedestal driving device drives the pedestal to move forward, and the rotating blade completely removes the virtual slag removed by the shovel. Since the height of the virtual slag after removal is consistent, the cutting process is smooth, and the vibration during the cutting process can be absorbed by the buffer seat compression spring, which further improves the stability of the cutting process. When the pedestal moves forward, it walks between the two vertical plates without interference. After cutting is completed, the pedestal driving device drives the pedestal to move backward to the initial state, the impact seat driving device drives the impact seat to move backward to the initial state, and the car body driving device drives the car body to move forward to the next workstation and repeats the above actions, thereby completing the removal of the entire tunnel vault slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 It is a right view structural schematic diagram of the present invention;

[0028] Figure 3 for Figure 1 A-direction structural diagram in FIG.

[0029] Figure 4 for Figure 3 BB section structure schematic diagram;

[0030] Figure 5 for Figure 3 Schematic diagram of CC section structure;

[0031] Figure 6 It is a schematic diagram of the main structure of the barrier piece;

[0032] Figure 7 It is a side view structural schematic diagram of the scraper part of the present invention;

[0033] In the figure, 1. track 2. car body 3. wheel 4. oil cylinder Ⅰ 5. bearing with seat 6. screw Ⅰ 7. linear guide 8. reducer Ⅰ 9. motor Ⅰ 10. guide rail slider 11. hydraulic station 12. oil pump 13. vertical plate 14. oil cylinder Ⅱ 15. impact seat 16. pedestal 17. worm gear reducer 18. motor Ⅱ 19. guide rod Ⅰ 20. lifting seat 21. guide rod Ⅱ 22. buffer seat 23. spring 24. screw Ⅱ 25. wall panel 26. blade 27. cutter disc 28. reducer Ⅱ 29. motor Ⅲ 30. rubber pad 31. guide sleeve Ⅰ 32. guide rail 33. guide sleeve Ⅱ 34. reducer Ⅲ 35. motor Ⅳ 36. bearing 37. scraper 38. tension spring 39. through hole 40. barrier sheet 41. block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 To Attachment Figure 7 The present invention is further described.

[0035] A device for removing slag from a tunnel vault, comprising: two rails 1, which are arranged parallel to each other and are laid in the tunnel along the extension direction of the tunnel; a vehicle body 2, on which wheels 3 are rotatably mounted at the four corners of the lower end, and two wheels 3 on the same side of the left and right ends of the vehicle body 2 are rollingly mounted on the corresponding rails 1 on the same side; a vehicle body driving device, which is arranged on the vehicle body 2 and is used to drive the wheels 3 to rotate; a linear guide rail 7, which is horizontally arranged at the upper end of the vehicle body 2 along the front-back direction, and a pedestal 16 is horizontally mounted on the guide slider 10 of the linear guide rail 7; a pedestal driving device, which is arranged on the vehicle body 2 and is used to drive the pedestal 16 to move horizontally along the front-back direction; a lifting seat 20, which is horizontally arranged above the pedestal 16, and a lifting seat driving device is arranged on the pedestal 16 and is used to drive the lifting seat 20 to move up and down; a buffer seat 22, which is horizontally arranged above the lifting seat 20, and a guide rod II 21 is vertically arranged on the lifting seat 20, and the buffer seat 22 is slidably sleeved on the guide rod II 21, and the guide rod II A spring 23 is mounted on 21, the upper end of the spring 23 contacts the buffer seat 22, and the lower end thereof contacts the lifting seat 20; two wall panels 25 are parallel to each other and are respectively arranged at the left and right ends of the buffer seat 22 in the vertical direction. The inner end of the wall panel 25 is rotatably mounted with a disc-shaped cutter disc 27 through a bearing 36. The two cutter discs 27 are coaxially arranged with each other, and the axis of the cutter disc 27 is horizontally arranged in the left and right directions. N blades 26 are arranged at intervals along the circumferential direction between the two cutter discs 27, where N is a positive integer greater than or equal to 3, and the blade 26 is an arc-shaped structure, and its curvature matches the curvature of the tunnel vault; a cutter disc driving device is used to drive The movable cutter disc 27 rotates; the two vertical plates 13 are parallel to each other and are respectively arranged on the left and right sides of the rear end of the vehicle body 2 in the vertical direction. The inner ends of the vertical plates 13 are horizontally provided with guide rails 32 in the front-to-back direction. The impact seat 15 is arranged between the two vertical plates 13, and its left and right ends are slidably installed with the guide rails 32 on the same side. The front end of the impact seat 15 is provided with a scraper 37 with a triangular structure in the longitudinal section. The spacing between the two vertical plates 13 is greater than the width of the platform 16, the lifting seat 20 and the buffer seat 22; and the impact seat driving device is used to drive the impact seat 15 to move horizontally in the front-to-back direction, and the virtual slag on the arch is scraped off during the forward movement of the impact seat 15.When in use, the impact seat driving device drives the impact seat 15 to move to the rear end first, and then the impact seat driving device drives the impact seat 15 to move forward, and the scraper 37 is used to impact and remove the virtual slag of different heights on the arch, so that the height of the virtual slag after the arch is removed is consistent, and then the cutter disc driving device drives the cutter disc 27 to rotate, and each blade 26 between the two cutter discs 27 rotates, and the lifting seat driving device drives the lifting seat 20 to the cutting height, and the arc-shaped blade 26 cuts the virtual slag of the tunnel arch, and then the platform driving device drives the platform 16 to move forward, and the rotating blade 26 completely removes the virtual slag removed by the scraper 37. Since the height of the virtual slag after removal is consistent, the cutting process is stable, and the vibration during the cutting process can be absorbed by the buffer seat 22 compression spring 23, which further improves the stability of the cutting process. When the platform 16 moves forward, it walks between the two vertical plates 13 without interference. After cutting is completed, the pedestal driving device drives the pedestal 16 to move backward to the initial state, the impact seat driving device drives the impact seat 15 to move backward to the initial state, and the vehicle body driving device drives the vehicle body 2 to move forward to the next workstation and repeats the above actions, thereby completing the removal of the virtual slag on the entire tunnel vault.

[0036] The vehicle body driving device may be of the following structure, which includes a reducer II 28 installed on one side of the vehicle body 2 and a motor III 29 drivingly connected to the input shaft of the reducer II 28, and the output shaft of the reducer II 28 is coaxially connected to the corresponding wheel 3 on the same side. The rotation of the motor III 29 can drive the wheel 3 to rotate, and the rotation of the wheel 3 makes the vehicle body 2 move along the track 1.

[0037] The pedestal driving device may be of the following structure, which includes a lead screw Ⅰ 6 rotatably mounted on the vehicle body 2 through seat bearings 5 ​​at both ends, the axis of the lead screw Ⅰ 6 is parallel to the linear guide rail 7, a reducer Ⅰ 8 is mounted on the vehicle body 2, the output shaft of the reducer Ⅰ 8 is coaxially connected to the lead screw Ⅰ 6, the input shaft of the reducer Ⅰ 8 is connected to the motor Ⅰ 9, and the lead screw Ⅰ 6 is threadedly connected to the pedestal 16. The motor Ⅰ 9 rotates and drives the lead screw Ⅰ 6 to rotate after the torque is decelerated and amplified by the reducer Ⅰ 8. Since the lead screw Ⅰ 6 is threadedly connected to the pedestal 16, the lead screw Ⅰ 6 can drive the pedestal 16 to move forward or backward along the linear guide rail 7 during the forward or reverse rotation process.

[0038] The lifting seat driving device may be of the following structure, which includes a guide rod Ⅰ 19 vertically mounted on the pedestal 16, a worm gear reducer 17 mounted on the pedestal 16, and a lead screw Ⅱ 24 arranged in the vertical direction, the upper end of the lead screw Ⅱ 24 is threadedly connected to the lifting seat 20, and the lower end thereof is threadedly connected to the output shaft of the worm gear reducer 17, and the input shaft of the worm gear reducer 17 is threadedly connected to the motor Ⅱ 18. The motor Ⅱ 18 rotates and drives the lead screw Ⅱ 24 to rotate after the torque is decelerated and amplified by the worm gear reducer 17. Since the lead screw Ⅱ 24 is threadedly connected to the lifting seat 20, the lifting seat 20 is driven to move up and down under the guidance of the guide rod Ⅰ 19. Since the worm gear transmission has a self-locking characteristic, when the motor Ⅱ 18 stops rotating, the lead screw Ⅱ 24 cannot rotate freely, thereby ensuring that the position of the lifting seat 20 is locked and fixed, and preventing the height of the lifting seat 20 from changing when the rotating blade 26 is cutting.

[0039] The impact seat driving device can be the following structure, which includes two tension springs 38 and two oil cylinders II 14, the front ends of the two tension springs 38 are respectively connected to the left and right ends of the impact seat 15, and the rear ends thereof are connected to the vertical plate 13, and the two oil cylinders II 14 are respectively horizontally installed on the inner ends of the vertical plates 13 on the same side, and the piston rod head ends of the oil cylinders II 14 are provided with M blocks 41 at intervals along the circumferential direction, and the left and right ends of the impact seat 15 are respectively provided with through holes 39 in the horizontal direction, and M blocking sheets 40 corresponding to the block 41 are arranged at intervals in the circumferential direction in the through holes 39. When the piston rod of the oil cylinder II 14 extends outward, the block 41 contacts the front end of the blocking sheet 40, and the oil cylinder II 14 pushes the impact seat 15 to move toward the inner end and the tension spring 38 is stretched. When the elastic force of the tension spring 38 is greater than the resistance of the M barrier pieces 40 to elastic deformation, the stopper 41 causes the barrier piece 40 to bend and deform and then move to the rear end of the barrier piece 40. In the initial state, under the action of the tension spring 38, the impact seat 15 is located at the front end of the vehicle body 2. At this time, the block 41 is in contact with the front side end of the barrier plate 40. When working, the piston rod of the cylinder II 14 extends outward. At this time, the isolation force of the M barrier plates 40 is greater than the elastic force of the two tension springs 38. The cylinder II 14 pushes the impact seat 15 to move rearward. When the impact seat 15 moves to the rearmost side end, the tension of the tension spring 38 increases due to its continuous growth, and its tension exceeds the limit of elastic deformation of the barrier plate 40. At this time, each block 41 pushes each barrier plate 40 to elastically deform, and the block 41 moves to the rear end of the barrier plate 40. Since the piston rod of the cylinder II 14 is inserted into the through hole 39, the tension spring 38 pulls the impact seat 15 to accelerate toward the front end, thereby driving the scraper 37 to impact and remove the virtual slag.

[0040] The cutter disc drive device may be of the following structure, which includes a reducer III 34 mounted on the buffer seat 22 and a motor IV 35 drivingly connected to the input shaft of the reducer III 34, and the output shaft of the reducer III 34 drivingly connected to a cutter disc 27. The motor IV 35 rotates and drives the cutter disc 27 to rotate after the torque is decelerated and amplified by the reducer III 34, thereby realizing the rotation of each blade 26 fixedly mounted between the two cutter discs 27, and completing the cutting and scraping of the virtual slag on the arch.

[0041] Furthermore, it also includes oil cylinders Ⅰ 4 respectively installed at the left and right ends of the vehicle body 2, the axis of the oil cylinder Ⅰ 4 is horizontally arranged in the left and right direction, and the piston rod head of the oil cylinder Ⅰ 4 is provided with a rubber pad 30. When the piston rod of the oil cylinder Ⅰ 4 is fully extended, the rubber pad 30 contacts the tunnel side wall on the same side. When the vehicle body 2 moves into position, the piston rod of the oil cylinder Ⅰ 4 extends outward to drive the rubber pad 30 to contact the tunnel side wall. The two oil cylinders Ⅰ 4 act simultaneously to support and fix the vehicle body 2, preventing the blade 37 from moving due to lateral force when shoveling and the rotating blade 26 from moving due to lateral force when cutting, thereby improving the reliability and stability during operation.

[0042] Preferably, the screw I 6 is a forward and reverse screw. The screw I 6 is a forward and reverse screw to ensure that the motor I 9 always rotates in one direction. When the base 16 moves to one end of the screw I 6, it automatically changes direction to avoid frequent forward and reverse starting of the motor I 9, thereby increasing the service life of the motor I 9.

[0043] Further, the lifting seat 20 is provided with a guide sleeve I 31, which is sleeved on the corresponding guide rod I 19, and the buffer seat 22 is provided with a guide sleeve II 33, which is sleeved on the corresponding guide rod II 21. By providing the guide sleeve I 31, the guiding property of the lifting seat 20 when it moves up and down can be improved, and the smoothness of the movement can be further improved. By providing the guide sleeve II 33, the guiding property of the buffer seat 22 when it moves up and down can be improved, and the smoothness of the movement can be further improved.

[0044] Preferably, a hydraulic station 11 is further included which is installed on the vehicle body 2, and the oil cylinder II 14 and the oil cylinder I 4 are connected to the oil pump 12 of the hydraulic station 11 through a reversing valve. By arranging the hydraulic station 11 on the vehicle body 2, it is convenient to supply oil to the oil cylinder II 14 and the oil cylinder I 4, thereby improving the convenience of use.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel vault slag removal device, characterized in that: include: Two tracks (1) are arranged parallel to each other, and the tracks (1) are laid in the tunnel along the extension direction of the tunnel; The vehicle body (2) has wheels (3) rotatably mounted at the four corners of the lower end thereof, and two wheels (3) on the same side at the left and right ends of the vehicle body (2) are rollingly arranged on the corresponding tracks (1) on the same side; A vehicle body driving device, arranged on the vehicle body (2) and used for driving the wheels (3) to rotate; A linear guide rail (7) is horizontally arranged at the upper end of the vehicle body (2) along the front-rear direction, and a pedestal (16) is horizontally installed on the guide rail slider (10) of the linear guide rail (7); A pedestal driving device is arranged on the vehicle body (2) and is used to drive the pedestal (16) to move horizontally in the front-rear direction; A lifting seat (20) is horizontally arranged above the platform (16); a lifting seat driving device is arranged on the platform (16) and is used to drive the lifting seat (20) to move up and down; A buffer seat (22) is horizontally arranged above the lifting seat (20), a guide rod II (21) is vertically arranged on the lifting seat (20), the buffer seat (22) is slidably mounted on the guide rod II (21), a spring (23) is mounted on the guide rod II (21), the upper end of the spring (23) is in contact with the buffer seat (22), and the lower end of the spring (23) is in contact with the lifting seat (20); Two wall panels (25) are parallel to each other and are respectively arranged at the left and right ends of the buffer seat (22) in the vertical direction. A disc-shaped cutter disc (27) is rotatably mounted on the inner side of the wall panel (25) through a bearing (36). The two cutter discs (27) are coaxially arranged with each other. The axes of the cutter discs (27) are arranged horizontally in the left and right directions. N blades (26) are arranged at intervals in the circumferential direction between the two cutter discs (27), where N is a positive integer greater than or equal to 3. The blades (26) are arc-shaped structures, and their curvature matches the curvature of the tunnel vault. A cutter disc driving device, used for driving the cutter disc (27) to rotate; Two vertical plates (13) are parallel to each other and are respectively arranged on the left and right sides of the rear end of the vehicle body (2) in the vertical direction. The inner ends of the vertical plates (13) are horizontally provided with guide rails (32) in the front-rear direction. The impact seat (15) is arranged between the two vertical plates (13). The left and right ends of the impact seat (15) are slidably installed with the guide rails (32) on the same side. The front end of the impact seat (15) is provided with a scraper (37) with a triangular structure in longitudinal section. The spacing between the two vertical plates (13) is greater than the width of the platform (16), the lifting seat (20) and the buffer seat (22); and The impact seat driving device is used to drive the impact seat (15) to move horizontally in the front-rear direction, and the impact seat (15) removes the slag on the arch top during the forward movement.

2. The tunnel vault slag removal device according to claim 1 is characterized in that: The vehicle body driving device comprises a reducer II (28) installed on one side of the vehicle body (2) and a motor III (29) drivingly connected to the input shaft of the reducer II (28); the output shaft of the reducer II (28) is coaxially drivingly connected to the corresponding wheel (3) on the same side.

3. The tunnel vault slag removal device according to claim 1 is characterized in that: The pedestal driving device comprises a lead screw I (6) rotatably mounted on the vehicle body (2) via seat bearings (5) at both ends, the axis of the lead screw I (6) being parallel to the linear guide rail (7), a reducer I (8) being mounted on the vehicle body (2), the output shaft of the reducer I (8) being coaxially connected to the lead screw I (6), the input shaft of the reducer I (8) being connected to the motor I (9), and the lead screw I (6) being threadedly connected to the pedestal (16).

4. The tunnel vault slag removal device according to claim 1 is characterized in that: The lifting seat driving device comprises a guide rod I (19) vertically mounted on a pedestal (16), a worm gear reducer (17) mounted on the pedestal (16), and a lead screw II (24) arranged in a vertical direction, wherein the upper end of the lead screw II (24) is threadedly connected to the lifting seat (20), and the lower end thereof is transmission-connected to the output shaft of the worm gear reducer (17), and the input shaft of the worm gear reducer (17) is transmission-connected to the motor II (18).

5. The tunnel vault slag removal device according to claim 1, characterized in that: The impact seat driving device comprises two tension springs (38) and two oil cylinders II (14). The front ends of the two tension springs (38) are respectively connected to the left and right ends of the impact seat (15), and the rear ends thereof are connected to the vertical plate (13). The two oil cylinders II (14) are respectively installed horizontally at the inner ends of the vertical plates (13) on the same side. The piston rod heads of the oil cylinders II (14) are provided with M blocks (41) at intervals in the circumferential direction. The left and right ends of the impact seat (15) are respectively provided with through holes (39) in the horizontal direction. The through holes ( M barrier plates (40) corresponding to the block (41) are arranged at intervals along the circumferential direction inside the oil cylinder Ⅱ (14). When the piston rod of the oil cylinder Ⅱ (14) extends outward, the block (41) contacts the front side end of the barrier plate (40), and the oil cylinder Ⅱ (14) pushes the impact seat (15) to move toward the inner side end and the tension spring (38) is stretched. When the elastic force of the tension spring (38) is greater than the resistance of the elastic deformation of the M barrier plates (40), the block (41) causes the barrier plate (40) to bend and deform and then move to the rear side end of the barrier plate (40).

6. The tunnel vault slag removal device according to claim 1, characterized in that: The cutter disc drive device comprises a reducer III (34) mounted on a buffer seat (22) and a motor IV (35) drivingly connected to an input shaft of the reducer III (34); an output shaft of the reducer III (34) drivingly connected to a cutter disc (27).

7. The tunnel vault slag removal device according to claim 5, characterized in that: It also includes an oil cylinder I (4) respectively installed at the left and right ends of the vehicle body (2), wherein the axis of the oil cylinder I (4) is arranged horizontally in the left and right directions, and a rubber pad (30) is arranged at the head end of the piston rod of the oil cylinder I (4). When the piston rod of the oil cylinder I (4) is fully extended, the rubber pad (30) contacts the tunnel side wall on the same side.

8. The tunnel vault slag removal device according to claim 3 is characterized by: The lead screw I (6) is a forward and reverse rotation lead screw.

9. The tunnel vault slag removal device according to claim 4, characterized in that: The lifting seat (20) is provided with a guide sleeve I (31), which is sleeved on the corresponding guide rod I (19); the buffer seat (22) is provided with a guide sleeve II (33), which is sleeved on the corresponding guide rod II (21).

10. The tunnel vault slag removal device according to claim 7, characterized in that: It also includes a hydraulic station (11) installed on the vehicle body (2), and the oil cylinder II (14) and the oil cylinder I (4) are connected to the oil pump (12) of the hydraulic station (11) through a reversing valve.

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