A highway tunnel maintenance robot

Abstract

The present invention proposes a highway tunnel maintenance robot, which relates to the technical field of highway tunnel engineering maintenance, including a mobile vehicle, a maintenance device and a collection device. The upper end of the mobile vehicle is provided with a maintenance device, and the maintenance device is provided with a collection device. In addition, the present invention can solve the following problems: a. When the existing highway tunnel maintenance robot maintains the top of the tunnel, the cleaning agent used for maintenance is directly sprayed, resulting in a large amount of cleaning agent splashing inside the tunnel. The staff who follow the mobile vehicle for maintenance stay in the contaminated tunnel for a long time, which will cause harm to the health of the staff. b. When the existing highway tunnel maintenance robot cleans and maintains the tunnel, most of them use water spraying to clean it, which can only simply clean the dust on the top of the tunnel, and the cleaning effect is poor. At the same time, it cannot remove the oil stains accumulated in the tunnel for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of highway tunnel engineering maintenance, and specifically provides a highway tunnel maintenance robot. Background Art

[0002] With the continuous construction in China, the mileage of expressway construction in China is increasing, and at the same time, the construction standards for roads are also continuously improving. Tunnel construction is often carried out when the road passes through mountainous areas. Highway tunnels are detected in mountainous areas to ensure the straightness of the highway and avoid excessive winding routes.

[0003] With the continuous increase of highway tunnels, their daily maintenance and repair are becoming more and more frequent. At present, the main method for highway tunnel maintenance is still to control a cleaning vehicle to move in the tunnel by an operator. At the same time, a large amount of cleaning water is sprayed by the cleaning vehicle to wash the top of the tunnel, so as to achieve the purpose of tunnel maintenance. This method has the following problems:

[0004] a. When the existing highway tunnel maintenance robot maintains the top of the tunnel, the cleaning agent used for maintenance is directly sprayed, resulting in a large amount of cleaning agent splashing inside the tunnel. The staff following the mobile vehicle and staying in the polluted tunnel for a long time will cause harm to the health of the staff.

[0005] b. When the existing highway tunnel maintenance robot cleans and maintains the tunnel, most of them use the method of spraying water for cleaning. In this way, only the dust on the top of the tunnel can be simply cleaned, and the cleaning effect is poor. At the same time, due to the long-term traffic in the tunnel, the exhaust gas released by the vehicle acts in the tunnel for a long time, resulting in long-term accumulation of oil stains in the tunnel, and the oil stains are difficult to remove. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a highway tunnel maintenance robot, including a mobile vehicle, a maintenance device and a collection device. The maintenance device is arranged at the upper end of the mobile vehicle, and the collection device is arranged on the maintenance device.

[0007] The maintenance device includes a telescopic cylinder fixedly installed at the upper end of the mobile vehicle. The output end of the telescopic cylinder faces upward, and a U-shaped collection plate is fixedly installed at the output end of the telescopic cylinder. Telescopic guide columns are fixedly installed at the left and right ends of the lower end of the U-shaped collection plate and located at both ends of the telescopic cylinder. The U-shaped collection plate is an arc-shaped structure. A sliding block is slidably connected to the upper end surface of the U-shaped collection plate. The sliding block is an arc-shaped structure. An arc-shaped groove is opened at the upper end of the sliding block. A fixed block is slidably connected in the arc-shaped groove. A plurality of extrusion springs are fixedly arranged between the fixed block and the sliding block at equal intervals. The extrusion springs are located in the arc-shaped groove. A plurality of cleaning steel brushes are fixedly installed at the upper end of the fixed block at equal intervals. A steel brush reciprocating assembly is arranged at the lower end of the sliding block.

[0008] The collection device includes a sewage leakage trough. Sewage leakage troughs are provided at both the left and right ends of the U-shaped collection plate. A filter screen is fixedly laid in the sewage leakage trough. Sewage collection pipes are fixedly installed on the lower sides of the left and right ends of the U-shaped collection plate at the position of the filter screen. A clogging prevention component is arranged at the lower end of the filter screen.

[0009] Preferably, the steel brush reciprocating component includes a reciprocating plate fixedly installed in the middle of the lower end of the U-shaped collection plate. A reciprocating sliding groove is provided in the middle of the U-shaped collection plate. The reciprocating plate is slidably connected in the reciprocating sliding groove. Elastic sealing rubber sheets are fixed between the front and rear ends of the reciprocating plate and the reciprocating sliding groove. A return gear ring is fixedly connected to the lower end of the reciprocating plate. The return gear ring is slidably arranged on the connecting plate. An incomplete gear is meshed and rotated inside the return gear ring. The incomplete gear is rotatably arranged on the connecting plate. A reciprocating motor is fixed at one end of the connecting plate away from the incomplete gear. The output end of the reciprocating motor rotates through the connecting plate and is connected to the incomplete gear.

[0010] Preferably, cleaning agent spray heads are fixedly installed at equal intervals at the front and rear ends of the sliding block. Activity grooves are provided at equal intervals at the bent position of the front end of the U-shaped collection plate. A number of water spray heads are hingedly connected in the activity grooves. A synchronous frame is fixedly connected to the rear ends of the water spray heads together. A swing push rod is hinged at a position of the U-shaped collection plate close to the synchronous frame. The output end of the swing push rod is hingedly connected to the synchronous frame.

[0011] Preferably, the clogging prevention component includes a cleaning block. The cleaning block is slidably connected to the upper end of the filter screen. A telescopic spring is fixedly installed at the rear end of the cleaning block. The end of the telescopic spring away from the cleaning block is fixedly installed on the inner wall of the U-shaped collection plate. Two symmetrically arranged auxiliary plates are fixedly installed at the lower end of the sewage leakage trough. Wave grooves are provided on the inner sides of the two auxiliary plates. A moving rod is slidably connected in the wave groove. A clogging prevention cleaning brush is fixedly installed at the upper end of the moving rod.

[0012] Preferably, a buffer spring is fixedly installed at the lower end of the moving rod. A sliding plate is fixed at the lower end of the buffer spring. The sliding plate is slidably arranged at the lower ends of the two auxiliary plates. The side end of the sliding plate is connected to an electric push rod. The electric push rod is fixed to the lower end of the U-shaped collection plate through a motor seat.

[0013] Preferably, a discharge slot is provided at the front end of the U-shaped collection plate corresponding to the cleaning block. A strip-shaped slot is provided at the upper end of the discharge slot. A sealing plate is slidably connected in the strip-shaped slot. The lower end of the sealing plate abuts against a linkage rod. The linkage rod slidably penetrates through the U-shaped collection frame. The lower end of the linkage rod abuts against a rotating rod. A balance block is hinged in the middle of the rotating rod. The balance block is fixedly installed on the outer side wall of the U-shaped collection plate. An extrusion rod is fixedly installed at the end of the rotating rod away from the linkage rod. The extrusion rod slidably penetrates through the U-shaped collection plate, and the upper end of the extrusion rod is a wedge-shaped structure.

[0014] Preferably, a reciprocating spring is fixedly installed between the reciprocating plate and the reciprocating sliding groove.

[0015] Preferably, arc-shaped grooves are formed in the upper end surfaces of the U-shaped collection frames. Adaptive springs are fixedly installed in the arc-shaped grooves. The upper ends of the adaptive springs are fixed with arc-shaped blocks. The arc-shaped blocks are slidably arranged in the arc-shaped grooves, and balls are rotatably arranged at equal intervals at the upper ends of the arc-shaped blocks.

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

[0017] 1. The present invention provides a highway tunnel maintenance robot. Through the cooperation of the cleaner nozzle and the cleaning steel brush, it is ensured that the cleaner sprayed by the cleaner nozzle treats the oil stains on the top of the tunnel, and then the decomposed oil stains and other dust are swept clean together by the reciprocating cleaning steel brush.

[0018] 2. The present invention provides a highway tunnel maintenance robot. The collection device mainly excludes the sewage generated during the cleaning process through the cooperation of the filter screen and the U-shaped collection plate, avoiding the wanton splashing of the sewage during the cleaning process, which may cause pollution to the personnel following the maintenance.

[0019] 3. The present invention provides a highway tunnel maintenance robot. The main function of the anti-blocking component is to clean the stones or mud blocks remaining on the filter screen, avoiding blockage of the filter screen, which may cause the sewage generated during the cleaning process to be unable to be discharged in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is a transverse cross-sectional view of the present invention.

[0022] Figure 3 is of the present invention Figure 2 partial enlarged view at A.

[0023] Figure 4 is a top view of the present invention.

[0024] Figure 5 is of the present invention Figure 4 cross-sectional view taken along B-B (excluding the mobile vehicle).

[0025] Figure 6 is a schematic structural diagram of the collection device of the present invention.

[0026] Figure 7 is a cross-sectional view of the collection device of the present invention.

[0027] In the figure: 1. Mobile vehicle; 2. Maintenance device; 3. Collection device; 21. Telescopic cylinder; 22. C-shaped collection plate; 23. Telescopic guide post; 24. Slide block; 25. Fixed block; 26. Compression spring; 27. Cleaning steel brush; 28. Steel brush reciprocating assembly; 31. Sewage leakage trough; 32. Filter screen; 33. Sewage collection pipe; 34. Anti-blocking assembly; 281. Reciprocating plate; 282. Reciprocating sliding groove; 283. Elastic sealing rubber sheet; 284. Return gear ring; 285. Connecting plate; 286. Incomplete gear; 287. Reciprocating motor; 241. Cleaner spray head; 242. Clear water spray head; 243. Synchronization frame; 244. Swing push rod; 341. Cleaning block; 342. Telescopic spring; 343. Auxiliary plate; 344. Wave groove; 345. Moving rod; 346. Anti-blocking cleaning brush; 349. Buffer spring; 347. Slide plate; 348. Electric push rod; 221. Discharge trough; 222. Sealing plate; 223. Linking rod; 224. Rotating rod; 225. Balance block; 226. Extrusion rod; 2811. Reciprocating spring; 227. Adaptive spring; 228. Arc-shaped block; 229. Ball. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Refer to Figure 1 , a highway tunnel maintenance robot, including a mobile vehicle 1, a maintenance device 2 and a collection device 3. The maintenance device 2 is arranged at the upper end of the mobile vehicle 1, and the collection device 3 is arranged on the maintenance device 2; during the process of the mobile vehicle 1 moving in the tunnel, the top of the tunnel is cleaned through the maintenance device 2, and the sewage generated during the cleaning of the tunnel top is uniformly collected through the collection device 3.

[0030] Refer to Figure 2 , Figure 3 , Figure 4 and Figure 5, the curing device 2 includes a telescopic cylinder 21 fixedly installed at the upper end of the mobile vehicle 1. The output end of the telescopic cylinder 21 is arranged upward, and a U-shaped collecting plate 22 is fixedly installed on the output end of the telescopic cylinder 21. Telescopic guide columns 23 are fixedly installed at the left and right ends of the lower end of the U-shaped collecting plate 22 where the telescopic cylinder 21 is located. The U-shaped collecting plate 22 is of an arc structure. A sliding block 24 is slidably connected to the upper end surface of the U-shaped collecting plate 22. The sliding block 24 is of an arc structure. An arc-shaped groove is formed at the upper end of the sliding block 24. A fixed block 25 is slidably connected in the arc-shaped groove. A plurality of compression springs 26 are fixedly arranged between the fixed block 25 and the sliding block 24 at equal intervals. The compression springs 26 are located in the arc-shaped groove. A plurality of cleaning steel brushes 27 are fixedly installed at the upper end of the fixed block 25 at equal intervals. A steel brush reciprocating assembly 28 is arranged at the lower end of the sliding block 24; the steel brush reciprocating assembly 28 includes a reciprocating plate 281 fixedly installed in the middle of the lower end of the U-shaped collecting plate 22. A reciprocating sliding groove 282 is formed in the middle of the U-shaped collecting plate 22. The reciprocating plate 281 is slidably connected in the reciprocating sliding groove 282. Elastic sealing rubber sheets 283 are fixedly arranged between the front and rear ends of the reciprocating plate 281 and the reciprocating sliding groove 282. A return gear ring 284 is fixedly connected to the lower end of the reciprocating plate 281. The return gear ring 284 is slidably arranged on a connecting plate 285. An incomplete gear 286 is meshed and rotated inside the return gear ring 284. The incomplete gear 286 is rotatably arranged on the connecting plate 285. A reciprocating motor 287 is fixedly arranged at one end of the connecting plate 285 away from the incomplete gear 286. The output end of the reciprocating motor 287 rotatably penetrates through the connecting plate 285 and is connected to the incomplete gear 286; a reciprocating spring 2811 is fixedly installed between the fixed block 25 and the U-shaped collecting plate 22; a plurality of cleaning agent spray nozzles 241 are fixedly installed at the front and rear ends of the sliding block 24 at equal intervals. A plurality of activity grooves are formed at equal intervals at the bent position at the front end of the U-shaped collecting plate 22. A plurality of water spray nozzles 242 are hingedly connected in the activity grooves. A synchronous frame 243 is fixedly arranged at the rear ends of the water spray nozzles 242. A swing push rod 244 is hingedly arranged at a position of the U-shaped collecting plate 22 close to the synchronous frame 243. The output end of the swing push rod 244 is hingedly connected to the synchronous frame 243.

[0031] During the specific operation, first, the operator controls the mobile vehicle 1 to move to the position of the tunnel entrance. Subsequently, the telescopic cylinder 21 is activated, and the output end of the telescopic cylinder 21 pushes the entire U-shaped collection plate 22 upward until the cleaning steel brush 27 on the U-shaped collection plate 22 can abut against the arc-shaped top of the tunnel. Then, the reciprocating motor 287 is activated, and the reciprocating motor 287 drives the incomplete gear 286 to rotate. When the incomplete gear 286 rotates, it drives the loop gear ring 284 to move back and forth. When the loop gear ring 284 moves back and forth, it cooperates with the reciprocating spring 2811 to ensure that the cleaning steel brush 27 can move back and forth. The main function of the reciprocating spring 2811 is to buffer the reciprocating plate 281 to prevent contact between the reciprocating plate 281 and the U-shaped collection plate 22 during the reciprocating movement. Then, the cleaning steel brush 27 reciprocally cleans the top of the tunnel. During the back-and-forth movement of the cleaning steel brush 27, the cleaning agent nozzle 241 simultaneously sprays the tunnel wall quickly to ensure that the cleaning agent can be evenly sprayed onto the top of the tunnel. When the cleaning agent is sprayed onto the top of the tunnel and comes into contact with the stains on the top of the tunnel, it ensures that the stains can be easily shed. Then, the cleaning steel brush 27 quickly brushes the top of the tunnel back and forth to ensure that the cleaning steel brush 27 can clean the oil stains and dust accumulated on the top of the tunnel for a long time, ensuring the cleanliness of the tunnel. When the tunnel is cleaned, there will still be a large amount of cleaning agent remaining on the top of the tunnel. If these cleaning agents adhere to the tunnel for a long time, it is likely to cause corrosion of the concrete and other substances on the top of the tunnel. Therefore, after the cleaning steel brush 27 cleans the oil stains and dust attached to the top of the tunnel, a large amount of clean water is sprayed from the clean water nozzle 242, and the high-pressure clean water flushes the cleaning agent clean to avoid damage to the top of the tunnel. Subsequently, the sewage generated is collected by the collection device 3. The main function of the maintenance device 2 is to clean the oil stains and dust on the top of the tunnel through the mutual cooperation of the cleaning steel brush 27 and the cleaning agent, ensuring the high efficiency of cleaning.

[0032] Refer to Figure 4 and Figure 5, arc-shaped grooves are formed on the upper end surfaces of the U-shaped collecting plate 22. Adaptive springs 227 are fixedly installed in the arc-shaped grooves. The upper ends of the adaptive springs 227 are fixed with arc-shaped blocks 228. The arc-shaped blocks 228 are slidably arranged in the arc-shaped grooves. And evenly spaced rolling balls 229 are rotatably arranged at the upper ends of the arc-shaped blocks 228. Through the cooperation of the arc-shaped blocks 228 and the adaptive springs 227, it can be ensured that the arc-shaped blocks 228 can always abut against the top of the tunnel during the cleaning process of the tunnel top. At the same time, through the rolling balls 229, it can be ensured that the arc-shaped blocks 228 can move synchronously with the movement of the mobile vehicle 1, avoiding the direct contact between the arc-shaped blocks 228 and the top of the tunnel, which may cause wear of the arc-shaped blocks 228. The U-shaped collecting plate 22 and the arc-shaped blocks 228 can form a protective cover to ensure that the mixed water generated by the cleaning agent nozzle 241 and the clear water nozzle 242 cannot splash. At the same time, the sprayed cleaning agent can evenly spray the inner wall of the tunnel covered by the U-shaped collecting plate 22. Then, the cleaning steel brush 27 quickly reciprocates to clean the area sprayed with the cleaning agent until the wall of the tunnel top is cleaned.

[0033] Refer to Figure 1 , Figure 6 and Figure 7 , the collecting device 3 includes a sewage leakage trough 31. Sewage leakage troughs 31 are formed at the left and right ends of the U-shaped collecting plate 22. A filter screen 32 is fixedly laid in the sewage leakage trough 31. Sewage collecting pipes 33 are fixedly installed at the lower sides of the left and right ends of the U-shaped collecting plate 22 and at the position of the filter screen 32. A clogging prevention assembly 34 is arranged at the lower end of the filter screen 32; the clogging prevention assembly 34 includes a cleaning block 341. The cleaning block 341 is slidably connected to the upper end of the filter screen 32. A telescopic spring 342 is fixedly installed at the rear end of the cleaning block 341. The end of the telescopic spring 342 away from the cleaning block 341 is fixedly installed on the inner wall of the U-shaped collecting plate 22. Two symmetrically arranged auxiliary plates 343 are fixedly installed at the lower end of the sewage leakage trough 31. Wave-shaped grooves 344 are formed on the inner sides of the two auxiliary plates 343. A moving rod 345 is slidably connected in the wave-shaped grooves 344. A clogging prevention cleaning brush 346 is fixedly installed at the upper end of the moving rod 345; a buffer spring 349 is fixedly installed at the lower end of the moving rod 345. A sliding plate 347 is fixed at the lower end of the buffer spring 349. The sliding plate 347 is slidably arranged at the lower ends of the two auxiliary plates 343. The side end of the sliding plate 347 is connected with an electric push rod 348. The electric push rod 348 is fixed to the lower end of the U-shaped collecting plate 22 through a motor seat.

[0034] During specific operation, when the cleaning steel brush 27 is cleaning the stains on the top of the tunnel, a large amount of sewage mixed with water, cleaning agent and stains will be generated. Protected by the U-shaped collecting plate 22, this sewage can be prevented from splashing everywhere. At the same time, the sewage flows along the arc-shaped U-shaped collecting plate 22 towards both ends, and then passes through the filter screen 32 into the groove and enters the sewage collecting pipe 33. Subsequently, the sewage is discharged into the sewer through the sewage collecting pipe 33 and flows away. When some small stones fall off the wall at the top of the tunnel during the use of the highway tunnel maintenance robot, these stones cannot flow out of the filter screen 32 and are concentrated directly above the filter screen 32. Therefore, after the maintenance device 2 completes the maintenance, the electric push rod 348 is activated. The output end of the electric push rod 348 drives the sliding plate 347 to slide reciprocally. When the sliding plate 347 moves back and forth, the moving rod 345 and the anti-blocking cleaning brush 346 at the upper end of the sliding plate 347 move up and down reciprocally along the wavy groove 344. When the anti-dust cleaning brush moves up and down reciprocally, the dust and stones stuck in the filter screen 32 are lifted up. At this time, the cleaning block 341 at the upper end of the filter screen 32 pushes the lifted dust and stones to both front and back sides. While pushing, the cleaning block 341 generates a thrust on the extrusion rod 226. After being subjected to an external force, the extrusion rod 226 moves downward. Then, the extrusion rod 226 squeezes one end of the rotating rod 224, and the rotating rod 224 rotates around the leather balance block 225. Then, the other end of the rotating rod 224 squeezes the linkage rod 223, and the linkage rod 223 pushes the sealing plate 222 upward. Then, the discharge slot 221 opens until the dust and stones are pushed out of the U-shaped collecting plate 22 and collected.

[0035] The usage steps of the present invention during operation: Step 1: First, the operator controls the mobile vehicle 1 to move to the position of the tunnel entrance. Subsequently, the telescopic cylinder 21 is activated, and the output end of the telescopic cylinder 21 pushes the entire U-shaped collecting plate 22 upward until the cleaning steel brush 27 on the U-shaped collecting plate 22 can abut against the arc-shaped top of the tunnel. Then, the reciprocating motor 287 is activated, and the reciprocating motor 287 drives the incomplete gear 286 to rotate. When the incomplete gear 286 rotates, it drives the loop gear ring 284 to move back and forth. When the loop gear ring 284 moves back and forth, it cooperates with the reciprocating spring 2811 to ensure that the cleaning steel brush 27 can move back and forth, and at the same time, the cleaning steel brush 27 reciprocally brushes the top of the tunnel.

[0036] Step 2: When the cleaning steel brush 27 is cleaning the stains on the top of the tunnel, the sewage flows towards both ends along the arc-shaped U-shaped collecting plate 22. Then, the sewage passes through the filter screen 32 and enters the sewage collection pipe 33 through the groove. Subsequently, the sewage is discharged into the sewer through the sewage collection pipe 33 and flows away. Then, the electric push rod 348 is activated, and the output end of the electric push rod 348 drives the sliding plate 347 to reciprocate. When the sliding plate 347 moves back and forth, the moving rod 345 and the anti-blocking cleaning brush 346 at the upper end of the sliding plate 347 move up and down along the wavy groove 344. When the dust-proof cleaning brush moves up and down, the dust and stones stuck in the filter screen 32 are lifted up. At this time, the cleaning block 341 above the filter screen 32 pushes the lifted dust and stones to both front and back sides until the dust and stones are pushed out of the U-shaped collecting plate 22 and collected.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highway tunnel maintenance robot, comprising a mobile vehicle (1), a maintenance device (2) and a collection device (3), characterized in that: A maintenance device (2) is provided at the upper end of the mobile vehicle (1), and a collection device (3) is provided on the maintenance device (2); The maintenance device (2) includes a telescopic cylinder (21) fixedly installed at the upper end of the mobile vehicle (1). The output end of the telescopic cylinder (21) is arranged upward, and a U-shaped collection plate (22) is fixedly installed at the output end of the telescopic cylinder (21). Telescopic guide columns (23) are fixedly installed at the left and right ends of the lower end of the U-shaped collection plate (22) where the telescopic cylinder (21) is located. The U-shaped collection plate (22) is of an arc structure. A sliding block (24) is slidably connected to the upper end surface of the U-shaped collection plate (22). The sliding block (24) is of an arc structure. An arc-shaped groove is opened at the upper end of the sliding block (24), and a fixed block (25) is slidably connected in the arc-shaped groove. A plurality of compression springs (26) are fixedly arranged at equal intervals between the fixed block (25) and the sliding block (24). The compression springs (26) are located in the arc-shaped groove. A plurality of cleaning steel brushes (27) are fixedly installed at equal intervals at the upper end of the fixed block (25), and a steel brush reciprocating assembly (28) is arranged at the lower end of the sliding block (24); A plurality of detergent spray nozzles (241) are fixedly installed at equal intervals at the front and rear ends of the sliding block (24). A plurality of movable grooves are opened at equal intervals at the bent position at the front end of the U-shaped collection plate (22). A plurality of water spray nozzles (242) are hinged in the movable grooves. A synchronous frame (243) is fixedly connected to the rear ends of the water spray nozzles (242). A swing push rod (244) is hinged at a position of the U-shaped collection plate (22) close to the synchronous frame (243), and the output end of the swing push rod (244) is hinged to the synchronous frame (243); The collection device (3) includes a sewage leakage trough (31). Sewage leakage troughs (31) are opened at the left and right ends of the U-shaped collection plate (22). A filter screen (32) is fixedly laid in the sewage leakage trough (31). Sewage collection pipes (33) are fixedly installed at the lower sides of the left and right ends of the U-shaped collection plate (22) at the position of the filter screen (32), and an anti-blocking assembly (34) is arranged at the lower end of the filter screen (32); The mobile vehicle (1) moves to the position of the tunnel entrance. Then the telescopic cylinder (21) is started until the cleaning steel brush (27) on the U-shaped collection plate (22) can abut against the arc-shaped top of the tunnel. Then the cleaning steel brush (27) reciprocally cleans the top of the tunnel. During the forward and backward reciprocating movement of the cleaning steel brush (27), the detergent spray nozzles (241) simultaneously spray the walls of the tunnel quickly. The detergent is sprayed onto the top of the tunnel. Then the cleaning steel brush (27) quickly scrubs the top of the tunnel back and forth. A large amount of clear water is sprayed in the water spray nozzles (242). The high-pressure clear water flushes the detergent clean. Then the generated sewage is collected through the collection device (3).

2. A highway tunnel maintenance robot according to claim 1, characterized in that: The steel brush reciprocating assembly (28) includes a reciprocating plate (281) fixedly installed in the middle of the lower end of the U-shaped collection plate (22). A reciprocating sliding groove (282) is formed in the middle of the U-shaped collection plate (22). The reciprocating plate (281) is slidably connected in the reciprocating sliding groove (282). Elastic sealing rubber sheets (283) are fixed between the front and rear ends of the reciprocating plate (281) and the reciprocating sliding groove (282). A return gear ring (284) is fixedly connected to the lower end of the reciprocating plate (281). The return gear ring (284) is slidably arranged on the connecting plate (285). An incomplete gear (286) is meshed and rotated inside the return gear ring (284). The incomplete gear (286) is rotatably arranged on the connecting plate (285). A reciprocating motor (287) is fixed at one end of the connecting plate (285) away from the incomplete gear (286). The output end of the reciprocating motor (287) rotatably penetrates the connecting plate (285) and is connected to the incomplete gear (286).

3. A highway tunnel maintenance robot according to claim 1, characterized in that: The anti-blocking assembly (34) includes a cleaning block (341). The cleaning block (341) is slidably connected to the upper end of the filter screen (32). A telescopic spring (342) is fixedly installed at the rear end of the cleaning block (341). One end of the telescopic spring (342) away from the cleaning block (341) is fixedly installed on the inner wall of the U-shaped collection plate (22). Two symmetrically arranged auxiliary plates (343) are fixedly installed at the lower end of the sewage leakage trough (31). Wave grooves (344) are formed on the inner sides of the two auxiliary plates (343). A moving rod (345) is slidably connected in the wave groove (344). An anti-blocking cleaning brush (346) is fixedly installed at the upper end of the moving rod (345).

4. A highway tunnel maintenance robot according to claim 3, characterized in that: A buffer spring (349) is fixedly installed at the lower end of the moving rod (345). A sliding plate (347) is fixed at the lower end of the buffer spring (349). The sliding plate (347) is slidably arranged at the lower ends of the two auxiliary plates (343). An electric push rod (348) is connected to the side end of the sliding plate (347). The electric push rod (348) is fixed to the lower end of the U-shaped collection plate (22) through a motor seat.

5. A highway tunnel maintenance robot according to claim 1, characterized in that: An outlet groove (221) is formed at the front end of the U-shaped collection plate (22) corresponding to the position of the cleaning block (341). A strip groove is formed at the upper end of the outlet groove (221). A sealing plate (222) is slidably connected in the strip groove. A linkage rod (223) is abutted against the lower end of the sealing plate (222). The linkage rod (223) slidably penetrates the U-shaped collection frame. The lower end of the linkage rod (223) is abutted against a rotating rod (224). A balance block (225) is hinged in the middle of the rotating rod (224). The balance block (225) is fixedly installed on the outer side wall of the U-shaped collection plate (22). An extrusion rod (226) is fixedly installed at one end of the rotating rod (224) away from the linkage rod (223). The extrusion rod (226) slidably penetrates the U-shaped collection plate (22), and the upper end of the extrusion rod (226) is a wedge-shaped structure.

6. A highway tunnel maintenance robot according to claim 2, characterized in that: A reciprocating spring (2811) is fixedly installed between the reciprocating plate (281) and the reciprocating sliding groove (282).

7. A highway tunnel maintenance robot according to claim 1, characterized in that: The upper end surfaces of the U-shaped collecting plates (22) are each provided with arc-shaped grooves, and an adaptive spring (227) is fixedly installed in the arc-shaped grooves. The upper end of the adaptive spring (227) is fixed with an arc-shaped block (228). The arc-shaped block (228) is slidably arranged in the arc-shaped groove, and a plurality of balls (229) are rotatably arranged at equal intervals at the upper end of the arc-shaped block (228).

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