Expressway marking cleaning device

Abstract

The invention relates to the field of coating processing equipment, in particular to an expressway marking cleaning device which comprises a nozzle connected with a water pump on a cleaning vehicle through a pipeline, and further comprises an unfolding and folding mechanism used for being installed at the bottom of a vehicle, an L-shaped rod is arranged on the unfolding and folding mechanism, and one end of the L-shaped rod is fixedly connected with a water spraying frame through a connector; supporting legs are fixed to the bottom of the water spraying frame, and rollers are hinged to the lower ends of the supporting legs. The swing mechanism is arranged on the water spraying frame and provided with a swing rod and a pump wheel, the middle of the swing rod is hinged to the water spraying frame, the lower end of the swing rod is fixedly connected with a guide pipe through a shroud ring, the nozzle is connected to the lower end of the guide pipe, and the pump wheel is connected with the guide pipe and the unfolding and folding mechanism through pipelines; and the protection mechanism is arranged on the guide pipe and comprises two protection covers, and when the nozzle stops spraying water, the two protection covers are oppositely closed to wrap the nozzle. According to the highway marking line cleaning device, efficient cleaning of road marking lines is achieved, and the operation cost and the safety risk are reduced.

Description

Technical Field

[0001] The invention relates to the field of road maintenance, in particular to a highway marking cleaning device. Background Art

[0002] According to the relevant regulations on daily maintenance of highways, road markings need to be cleaned regularly. The current cleaning method is manual cleaning with water trucks, which is mainly manual. It has low cleaning efficiency, long operation time and high cost. In addition, the operators are exposed to the operating highway, which poses a great safety hazard. In view of this, we propose a highway marking cleaning device. Summary of the invention

[0003] The purpose of the present invention is to provide a highway marking cleaning device to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a highway marking cleaning device, comprising a nozzle, the nozzle is connected to a water pump on a cleaning vehicle through a pipeline, and also includes:

[0004] The unfolding and retracting mechanism is used to be installed at the bottom of the vehicle, and an L-shaped rod is arranged on the unfolding and retracting mechanism, one end of the L-shaped rod is fixedly connected to the water spraying frame through a connecting head, a supporting leg is fixed at the bottom of the water spraying frame, and a roller is hinged at the lower end of the supporting leg;

[0005] A swing mechanism is arranged on the water spray frame, and a swing rod and a pump wheel are arranged on the swing mechanism, the middle part of the swing rod is hinged on the water spray frame, the lower end of the swing rod is fixedly connected to the conduit through a hoop, the nozzle is connected to the lower end of the conduit, and the pump wheel is respectively connected to the conduit and the expansion and retraction mechanism through pipelines;

[0006] A protection mechanism is arranged on the conduit, and the protection mechanism comprises two protection covers arranged opposite to each other. When the nozzle stops spraying water, the two protection covers are matched to wrap the nozzle.

[0007] Preferably, the expansion and contraction mechanism includes a mounting plate and a lifting plate, and the mounting plate and the lifting plate are arranged in upper and lower positions, a pump barrel is fixed to the bottom surface of the mounting plate, a piston plate is slidably connected to the inside of the pump barrel, one side of the piston plate is connected to the inner wall of the pump barrel through spring 2, the other side of the piston plate is vertically fixedly connected to the push-pull rod, and the push-pull rod passes through and is slidably connected to the end wall of the pump barrel, and the cavity where the push-pull rod is located inside the pump barrel is connected to the water outlet end of the water pump through water pipe 2.

[0008] Preferably, a scissor rod one and a scissor rod two are arranged between the mounting plate and the lifting plate, the scissor rod one and the scissor rod two have exactly the same structure, and the middle parts of the scissor rod one and the scissor rod two are hinged to each other, the upper end of the scissor rod one is hinged to the bottom surface of the mounting plate, and the lower end of the scissor rod two is hinged to the upper surface of the lifting plate, a slide groove one is provided on the bottom surface of the mounting plate, and a slider one is slidably connected in the slide groove one, one end of the push-pull rod away from the piston plate is fixedly connected to the slider one, the upper end of the scissor rod two is hinged to the slider one, a slide groove two is provided on the upper surface of the lifting plate, and the slider two is slidably connected in the slide groove two, and the lower end of the scissor rod one is hinged to the slider two.

[0009] Preferably, a protruding rod and a slide rail are fixed to the bottom surface of the lifting plate, one end of the L-shaped rod is slidably connected to the slide rail, and the protruding rod is connected to the L-shaped rod via a spring.

[0010] Preferably, a guide wheel is hinged on the bottom surface of the lifting plate, and a pull rope is wound around the guide wheel, one end of the pull rope is fixedly connected to the bottom surface of the mounting plate, and the other end is fixedly connected to the L-shaped rod.

[0011] Preferably, the swing mechanism includes connecting rod three, the upper end of the swing arm is hinged to connecting rod three, the pump wheel is fixed on the water spray frame, the end of the impeller shaft inside the pump wheel is fixedly connected to connecting rod one, and connecting rod one is hinged to connecting rod three through connecting rod two.

[0012] Preferably, a water pipe 1 is fixed on and connected to the peripheral wall of the pump wheel, the inlet end of the water pipe 1 is connected to the cavity where the push-pull rod is located inside the pump barrel, the outlet end of the water pipe 1 is connected to the cap through a branch pipe, and the cap is fixedly connected to the upper end of the conduit.

[0013] Preferably, the protective mechanism includes two bent arms, and the two bent arms are arranged corresponding to two protective covers, the two bent arms are arranged opposite to each other and symmetrically on both sides of the catheter, the upper ends of the bent arms are hinged on the outer side walls of the catheter, the lower ends of the bent arms are fixedly connected to the corresponding protective covers, and one end of the bent arm close to the protective cover is connected to the outer side wall of the catheter through spring three.

[0014] Preferably, two slide cylinders are fixed and connected on the outer wall of the conduit, and the two slide cylinders are arranged corresponding to the two bent arms, a strip through hole is opened in the middle of the bent arm, a slide plate is slidably connected inside the slide cylinder, a connecting rod four is fixedly connected to the slide plate, a pin rod is hinged at one end of the connecting rod four away from the slide plate, and the pin rod is inserted and slidably connected in the corresponding strip through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention realizes automatic deployment and folding of the water spray frame by arranging an unfolding and retracting mechanism, without manual operation, and will not bulge outward when stopping the cleaning operation, causing scratches and damages during driving, thereby improving driving safety during non-operating hours, and the nozzle is driven to swing back and forth by the swinging mechanism during water spray cleaning, so that the nozzle can spray and clean the marking line within a certain angle range, thereby improving the efficient cleaning of adhesives on the surface of the marking line, and improving the cleaning effect and efficiency. In addition, the protective mechanism automatically opens when water sprays to clean the marking line, and automatically closes when the operation is stopped to protect the nozzle. The whole device cooperates with the cleaning vehicle to realize efficient cleaning of road markings, and has the advantages of simple structure, convenient operation, good cleaning effect, etc., which can effectively improve the cleaning efficiency and quality of highway markings, and reduce operating costs and safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the general assembly structure of the present invention;

[0018] Figure 2 for Figure 1 AA section structural diagram of the central unfolding and retracting mechanism;

[0019] Figure 3 for Figure 1 The enlarged structural diagram at B in FIG.

[0020] Figure 4 for Figure 3 The enlarged structural diagram at C in FIG.

[0021] Figure 5 It is a schematic diagram of the structure of the two protective covers in the present invention in the open state.

[0022] In the figure: 1, unfolding and retracting mechanism; 2, water spraying frame; 3, swing rod; 4, outrigger; 5, roller; 6, pump wheel; 7, water pipe 1; 8, branch pipe; 9, connecting rod 1; 10, connecting rod 2; 11, connecting rod 3; 12, mounting plate; 13, slide 1; 14, slider 1; 15, scissor rod 1; 16, scissor rod 2; 17, lifting plate; 18, slide 2; 19, slider 2; 20, protruding rod; 21, slide rail; 22, L-shaped rod; 23. Connector; 24. Wire wheel; 25. Spring one; 26. Pull rope; 27. Piston plate; 28. Spring two; 29. ​​Push-pull rod; 30. Water pipe two; 31. Pump barrel; 32. Cap; 33. Conduit; 34. Hoop; 35. Bend arm; 36. Protective cover; 37. Strip through hole; 38. Spring three; 39. Slide; 40. Nozzle; 41. Slide; 42. Slide plate; 43. Connecting rod four; 44. Pin rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 5 The present invention provides a technical solution: a highway marking cleaning device, comprising a nozzle 40, the nozzle 40 can be set to be multiple, generally three, and the water spray width of the nozzle 40 is controlled to be 25 cm, and the spacing between two adjacent nozzles 40 is controlled to be 15 cm. The nozzle 40 is connected to a water pump on a cleaning vehicle through a pipeline, and also includes:

[0025] The unfolding and retracting mechanism is used to be installed at the bottom of the vehicle, and an L-shaped rod 22 is arranged on the unfolding and retracting mechanism. One end of the L-shaped rod 22 is fixedly connected to the water spraying frame 2 through a connector 23. A support leg 4 is fixed to the bottom of the water spraying frame 2, and a roller 5 is hinged at the lower end of the support leg 4. When the roller 5 touches the ground, the height between the water spraying frame 2 and the marking surface is maintained at 20-30 cm;

[0026] A swing mechanism is arranged on the water spray frame 2, and a swing rod 3 and a pump wheel 6 are arranged on the swing mechanism. The middle part of the swing rod 3 is hinged on the water spray frame 2, the lower end of the swing rod 3 is fixedly connected to the conduit 33 through a hoop 34, the nozzle 40 is connected to the lower end of the conduit 33, and the pump wheel 6 is respectively connected to the conduit 33 and the expansion and retraction mechanism through pipelines;

[0027] The protection mechanism disposed on the conduit 33 includes two protection covers 36 disposed opposite to each other. When the nozzle 40 stops spraying water, the two protection covers 36 are matched to wrap the nozzle 40 .

[0028] In this embodiment, the unfolding and retracting mechanism includes a mounting plate 12 and a lifting plate 17, and the mounting plate 12 and the lifting plate 17 are arranged in upper and lower positions, a pump barrel 31 is fixed to the bottom surface of the mounting plate 12, and a piston plate 27 is slidably connected inside the pump barrel 31, one side of the piston plate 27 is connected to the inner wall of the pump barrel 31 through a spring 28, and the other side of the piston plate 27 is vertically fixedly connected to a push-pull rod 29, and the push-pull rod 29 passes through and is slidably connected to the end wall of the pump barrel 31, and the cavity where the push-pull rod 29 is located inside the pump barrel 31 is connected to the water outlet end of the water pump through a water pipe 2 30, and a scissor rod 15 and a scissor rod 26 are arranged between the mounting plate 12 and the lifting plate 17, the scissor rod 15 and the scissor rod 26 have exactly the same structure, and the middle parts of the scissor rod 15 and the scissor rod 26 are hinged to each other, and the upper end of the scissor rod 15 is hinged to the bottom surface of the mounting plate 12, and the scissor rod 16 is hinged to the bottom surface of the mounting plate 12. The lower end of the fork rod 16 is hinged on the upper surface of the lifting plate 17, a slide groove 13 is provided on the bottom surface of the mounting plate 12, and a slider 14 is slidably connected in the slide groove 13, and one end of the push-pull rod 29 away from the piston plate 27 is fixedly connected to the slider 14, the upper end of the scissor rod 16 is hinged to the slider 14, a slide groove 28 is provided on the upper surface of the lifting plate 17, and a slider 19 is slidably connected in the slide groove 18, and the lower end of the scissor rod 15 is hinged to the slider 19, a convex rod 20 and a slide rail 21 are fixed to the bottom surface of the lifting plate 17, one end of the L-shaped rod 22 is slidably connected to the slide rail 21, and the convex rod 20 and the L-shaped rod 22 are connected by a spring 125, a wire wheel 24 is hinged on the bottom surface of the lifting plate 17, and a pull rope 26 is wound around the wire wheel 24, one end of the pull rope 26 is fixedly connected to the bottom surface of the mounting plate 12, and the other end is fixedly connected to the L-shaped rod 22.

[0029] In this embodiment, the swing mechanism includes a connecting rod three 11, the upper end of the swing arm 3 is hinged to the connecting rod three 11, the pump wheel 6 is fixed on the water spray frame 2, the end of the impeller shaft inside the pump wheel 6 is fixedly connected to the connecting rod one 9, and the connecting rod one 9 is hinged to the connecting rod three 11 through the connecting rod two 10, and the water pipe one 7 is fixed on the peripheral wall of the pump wheel 6 and connected, the inlet end of the water pipe one 7 is connected to the cavity where the push-pull rod 29 is located inside the pump barrel 31, and the outlet end of the water pipe one 7 is connected to the cap 32 through the branch pipe 8, and the cap 32 is fixedly connected to the upper end of the conduit 33.

[0030] In this embodiment, the protective mechanism includes two bent arms 35, and the two bent arms 35 are correspondingly arranged with two protective covers 36. The two bent arms 35 are arranged opposite to each other and are symmetrically arranged on both sides of the conduit 33. The upper end of the bent arm 35 is hinged on the outer wall of the conduit 33, and the lower end of the bent arm 35 is fixedly connected to the corresponding protective cover 36. The end of the bent arm 35 close to the protective cover 36 is connected to the outer wall of the conduit 33 through a spring three 38. Two slide cylinders 39 are fixed and connected on the outer wall of the conduit 33, and the two slide cylinders 39 are correspondingly arranged with the two bent arms 35. A strip through hole 37 is opened in the middle of the bent arm 35, and a slide plate 42 is slidably connected inside the slide cylinder 39. A connecting rod four 43 is fixedly connected to the slide plate 42. A pin rod 44 is hinged at one end of the connecting rod four 43 away from the slide plate 42, and the pin rod 44 is inserted and slidably connected in the corresponding strip through hole 37.

[0031] Working principle and advantages of the present invention: When the highway marking cleaning device is in use, the working process is as follows:

[0032] like Figure 1 and Figure 2 As shown, the entire device is installed at the rear side of the bottom of the cleaning vehicle through the mounting plate 12, and the mounting method adopts a detachable mounting method, for example, a bolt assembly mounting, a snap-on mounting, or other conventional fixed mounting methods, which is convenient for disassembly and assembly, so that it can be installed on both sides of the cleaning vehicle to facilitate the cleaning of the markings on both sides of the road, and then the inlet end of the water pipe 2 30 is connected to the water outlet end of the water pump through a plug-in connector for easy disassembly.

[0033] In the initial state Figure 2 and Figure 3 As shown, under the action of spring 28, the upper end of scissor rod 15 and the upper end of scissor rod 2 16 are kept at the farthest distance, so that the distance between the lifting plate and the mounting plate 12 is the shortest, and under the action of spring 1 25, the L-shaped rod 22 drives the water spraying frame 2 to be stored inside the bottom of the vehicle, and under the action of spring 3 38, the two protective covers 36 are aligned and cover the nozzle 40.

[0034] When cleaning the high-speed road markings, start the water pump, and the water pump pressurizes the water on the cleaning vehicle and transports it to the pump barrel 31 through the water pipe 230, so that the water liquid inside the pump barrel 31 increases and pushes the piston plate to compress the spring 28, so that the spring 28 obtains a restoring force, so that the piston plate 27 drives the slider 14 to slide in the slide groove 13 through the push-pull rod 29, and the box pump barrel 31 approaches, so that the upper end of the scissor rod 15 and the upper end of the scissor rod 216 approach each other, thereby causing the lifting plate 17 to move downward, and while the lifting plate 17 moves downward, the water spray frame 2 is driven downward through the L-shaped rod 22, and while the lifting plate 17 moves downward, the pull rope 26 pulls the L-shaped rod 22 to move toward the outside of the cleaning vehicle, and at the same time, the L-shaped rod 22 compresses the spring 25, so that the spring 25 obtains a restoring force until the roller 5 touches the ground, and at this time the water spray frame 2 is about 10-20 cm away from the side of the vehicle body. , ensuring that the wheels of the cleaning vehicle do not press onto the markings, making it convenient for the driver to observe the position of the cleaning rack and the cleaning situation through the rear view, and the roller 5 also plays a role in controlling the distance between the nozzle 40 and the markings to remain stable, so as to maintain a stable cleaning effect. The water in the pump barrel 31 enters the conduit 33 through the water pipe 1 7 and the branch pipe 8, and then is sprayed onto the surface of the markings through the nozzle 40, thereby realizing the automatic expansion of the nozzle 40 from the bottom of the vehicle to the outside of the vehicle by water pressure, without manual adjustment, and when the water in the water pipe 1 7 flows, the impeller shaft in the pump wheel 6 is driven to rotate, so that the impeller shaft drives the connecting rod 1 9 to rotate, so that the connecting rod 1 9 drives the swing rod 3 to swing back and forth through the connecting rod 2 10, and then the swing rod 3 drives the conduit 33 and the nozzle 40 to swing back and forth through the hoop 34, so that the nozzle 40 sprays and cleans the markings within a certain angle range, improves the efficient cleaning of the adhesive on the surface of the markings, and improves the cleaning effect and efficiency.

[0035] As described above, after the water enters the conduit 33, the internal water pressure increases and enters the slide cylinder 39, as shown in FIG. Figure 4 and Figure 5 As shown, the slide plate 42 pushes the bent arm 35 to rotate upward through the connecting rod 43 and the pin rod 44, thereby stretching the spring 38, so that the spring 38 obtains a restoring force, and then the two protective covers 36 are automatically opened, so that the nozzle 40 can spray water.

[0036] When the marking cleaning operation is stopped, the water pump is shut down. At this time, under the restoring force of spring 28, the piston plate 27 drives the push-pull rod 29 to push the slider 14 to reset, so that the upper end of the scissor rod 15 and the upper end of the scissor rod 2 16 move away from each other and drive the lifting plate 17 to move up and reset. Therefore, under the restoring force of spring 1 25, the L-shaped rod 22 drives the water spray frame 2 to move to the inside of the bottom of the vehicle and reset, so that it is automatically folded up when the operation is stopped, without manual operation, and will not bulge outward to cause scratches and damage during driving, thereby improving driving safety during non-operating time.

[0037] After the water pump is shut down, the water pressure in the conduit 33 returns to its initial state, and the slide plate 42 drives the curved arm 35 to rotate downward through the connecting rod 43 and the pin rod 44 under the restoring force of the spring three 38, so that the two curved arms 35 drive the two protective covers 36 to approach and fit together to cover the nozzle 40, thereby preventing the nozzle 40 from being blocked and damaged by splashing mud and particles, and prolonging the service life of the nozzle 40. The whole device cooperates with the cleaning vehicle to achieve efficient cleaning of road markings, and has the advantages of simple structure, easy operation, good cleaning effect, etc., which can effectively improve the cleaning efficiency and quality of highway markings and reduce operating costs and safety risks.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A highway marking cleaning device, comprising a nozzle (40), wherein the nozzle (40) is connected to a water pump on a cleaning vehicle through a pipeline, and wherein: Also includes: A deployment and retraction mechanism for installation at the bottom of a vehicle, wherein an L-shaped rod (22) is provided on the deployment and retraction mechanism, one end of the L-shaped rod (22) is fixedly connected to a water spray frame (2) via a connector (23), a support leg (4) is fixed at the bottom of the water spray frame (2), and a roller (5) is hinged at the lower end of the support leg (4); A swing mechanism is arranged on a water spray frame (2), and a swing rod (3) and a pump wheel (6) are arranged on the swing mechanism, the middle part of the swing rod (3) is hinged on the water spray frame (2), the lower end of the swing rod (3) is fixedly connected to the conduit (33) through a hoop (34), the nozzle (40) is connected to the lower end of the conduit (33), and the pump wheel (6) is respectively connected to the conduit (33) and the expansion and retraction mechanism through pipelines; A protection mechanism is arranged on the conduit (33), the protection mechanism comprising two protection covers (36) arranged opposite to each other. When the nozzle (40) stops spraying water, the two protection covers (36) are aligned to wrap the nozzle (40).

2. A highway marking cleaning device according to claim 1, characterized in that: The unfolding and retracting mechanism comprises a mounting plate (12) and a lifting plate (17), and the mounting plate (12) and the lifting plate (17) are arranged at upper and lower positions. A pump barrel (31) is fixed on the bottom surface of the mounting plate (12), and a piston plate (27) is slidably connected inside the pump barrel (31). One side of the piston plate (27) is connected to the inner wall of the pump barrel (31) through a second spring (28), and the other side of the piston plate (27) is vertically fixedly connected to a push-pull rod (29), and the push-pull rod (29) passes through and is slidably connected to the end wall of the pump barrel (31). The cavity inside the pump barrel (31) where the push-pull rod (29) is located is connected to the water outlet end of the water pump through a second water pipe (30).

3. A highway marking cleaning device according to claim 2, characterized in that: A scissor rod 1 (15) and a scissor rod 2 (16) are arranged between the mounting plate (12) and the lifting plate (17); the scissor rod 1 (15) and the scissor rod 2 (16) are completely identical in structure, and the middle parts of the scissor rod 1 (15) and the scissor rod 2 (16) are hinged to each other; the upper end of the scissor rod 1 (15) is hinged to the bottom surface of the mounting plate (12), and the lower end of the scissor rod 2 (16) is hinged to the upper surface of the lifting plate (17); the bottom surface of the mounting plate (12) is hinged to the upper surface of the lifting plate (17). A slide groove (13) is provided, and a slider (14) is slidably connected in the slide groove (13); the end of the push-pull rod (29) away from the piston plate (27) is fixedly connected to the slider (14); the upper end of the scissor rod (16) is hinged to the slider (14); a slide groove (18) is provided on the upper surface of the lifting plate (17), and a slider (19) is slidably connected in the slide groove (18); and the lower end of the scissor rod (15) is hinged to the slider (19).

4. A highway marking cleaning device according to claim 3, characterized in that: A protruding rod (20) and a slide rail (21) are fixed to the bottom surface of the lifting plate (17), one end of the L-shaped rod (22) is slidably connected to the slide rail (21), and the protruding rod (20) and the L-shaped rod (22) are connected via a spring (25).

5. A highway marking cleaning device according to claim 4, characterized in that: The bottom surface of the lifting plate (17) is hinged with a guide wheel (24), and a pull rope (26) is wound around the guide wheel (24). One end of the pull rope (26) is fixedly connected to the bottom surface of the mounting plate (12), and the other end is fixedly connected to the L-shaped rod (22).

6. A highway marking cleaning device according to claim 2, characterized in that: The swing mechanism comprises a connecting rod three (11), the upper end of the swing rod (3) is hinged to the connecting rod three (11), the pump wheel (6) is fixed on the water spray frame (2), the end of the impeller shaft inside the pump wheel (6) is fixedly connected to the connecting rod one (9), and the connecting rod one (9) is hinged to the connecting rod three (11) through the connecting rod two (10).

7. A highway marking cleaning device according to claim 6, characterized in that: A water pipe (7) is fixed on the peripheral wall of the pump wheel (6) and is connected thereto. The inlet end of the water pipe (7) is connected to the cavity where the push-pull rod (29) is located inside the pump barrel (31). The outlet end of the water pipe (7) is connected to a cap (32) via a branch pipe (8), and the cap (32) is fixedly connected to the upper end of the guide tube (33).

8. A highway marking cleaning device according to claim 1, characterized in that: The protection mechanism comprises two bent arms (35), and the two bent arms (35) are arranged correspondingly to the two protective covers (36). The two bent arms (35) are arranged opposite to each other and symmetrically arranged on both sides of the conduit (33). The upper ends of the bent arms (35) are hinged on the outer side wall of the conduit (33), and the lower ends of the bent arms (35) are fixedly connected to the corresponding protective covers (36). One end of the bent arm (35) close to the protective cover (36) is connected to the outer side wall of the conduit (33) through a spring three (38).

9. A highway marking cleaning device according to claim 8, characterized in that: Two slide cylinders (39) are fixed and connected on the outer wall of the conduit (33), and the two slide cylinders (39) are arranged corresponding to the two bent arms (35). A strip-shaped through hole (37) is opened in the middle of the bent arm (35). A slide plate (42) is slidably connected inside the slide cylinder (39), and a connecting rod four (43) is fixedly connected to the slide plate (42). A pin rod (44) is hinged at one end of the connecting rod four (43) away from the slide plate (42), and the pin rod (44) is inserted and slidably connected in the corresponding strip-shaped through hole (37).

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