Bridge pavement cleaning and maintaining device

Abstract

The invention relates to the technical field of bridge construction equipment, in particular to a bridge pavement cleaning and maintaining device which comprises a vehicle body, a water tank is fixedly arranged at the top of the vehicle body, a plurality of dust suction mechanisms are arranged in the vehicle body in the width direction, a dust collection mechanism is arranged at the tail end of each dust suction mechanism, and each dust suction mechanism comprises a hollow pipe and an annular fan arranged at the front end of the hollow pipe. A plurality of venturi tubes are arranged at the bottom of the hollow tube in an array mode, the dust collecting mechanism comprises a first spraying assembly, a filtering assembly and a second spraying assembly which are arranged at the tail end of the hollow tube, and the annular fan blows air into the hollow tube, sucks dust on the road surface through the venturi tubes and blows the dust to the tail end of the hollow tube; the first spraying assembly is used for depositing dust blown to the tail end of the hollow pipe to the filtering assembly for filtering, and the second spraying assembly is used for spraying and dust falling on the road surface, so that the problems that a device in the prior art cannot timely and well collect the dust in the maintenance process, more dust is easily deposited on the road surface, and the cleanliness of the road surface is influenced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction equipment, and in particular to a bridge pavement cleaning and maintenance device. Background Art

[0002] In bridge construction, the quality of concrete pavement construction directly impacts the bridge's durability, load-bearing capacity, and service life. After concrete is poured, the cement hydration reaction generates significant heat. Improper curing can easily lead to shrinkage cracking, insufficient strength, and decreased durability. Therefore, watering and curing cast-in-place bridge decks is crucial. Traditional curing methods typically rely on manual watering, but this is not only labor-intensive but also inefficient, produces uneven coverage, and fails to effectively reduce dust and dirt.

[0003] A Chinese invention patent with application number CN201710872288.5 discloses an automatic spraying maintenance device for concrete pavement for bridge construction, including a pavement foundation and a mounting base installed on the pavement foundation, the upper end of the left mounting base is connected to the left guide rail, the upper end of the left guide rail is connected to the left guide wheel, the middle part of the left guide wheel is connected to the traction shaft, the right end of the traction shaft is connected to the traction rod, the upper end of the right mounting base is connected to the right guide rail, the upper end of the right guide rail is connected to the right guide wheel, the middle part of the right guide wheel is connected to the driven shaft, the left end of the driven shaft is connected to the driven wheel, the upper end of the driven wheel is connected to the driving wheel through a chain, the right end of the driving wheel is connected to the driving shaft, the right end of the driving shaft is connected to the traction motor, a connecting plate is installed between the traction rod and the left fixed frame, and a water tank is installed on the upper end of the connecting plate.

[0004] Although it reduces the intensity of manual labor through the automatic spraying device, it cannot effectively reduce the dust on the road during the maintenance process, and cannot collect the dust in a timely and good manner, which easily causes more dust to accumulate on the road surface, affecting the cleanliness of the road surface. Summary of the Invention

[0005] The purpose of the present invention is to address the shortcomings of the existing technology and provide a bridge pavement cleaning and maintenance device, which includes a vehicle body, a water tank fixedly arranged on the top of the vehicle body, several dust suction mechanisms arranged in the width direction of the interior of the vehicle body, and a dust collecting mechanism arranged at the tail end of the dust suction mechanism. The dust suction mechanism includes a hollow tube fixedly arranged inside the vehicle body and an annular fan arranged at the front end of the hollow tube, and several Venturi tubes are arranged in an array at the bottom of the hollow tube. The dust collecting mechanism includes a first spray assembly, a filter assembly and a second spray assembly arranged at the tail end of the hollow tube in the height direction. The problem that the maintenance device of the prior art cannot effectively reduce the dust on the road surface during the maintenance process, cannot collect the dust in a timely and good manner, and easily causes more dust to be deposited on the road surface, affecting the cleanliness of the road surface is solved.

[0006] The technical solutions of the present invention are as follows: A bridge pavement cleaning and maintenance device comprises a vehicle body, a water tank is fixedly provided on the top of the vehicle body, a plurality of dust suction mechanisms are provided in the width direction of the interior of the vehicle body, a dust collecting mechanism is provided at the tail end of the dust suction mechanism, the dust suction mechanism comprises a hollow tube fixedly provided inside the vehicle body and an annular fan provided at the front end of the hollow tube, a plurality of venturi tubes are arrayed at the bottom of the hollow tube, the dust collecting mechanism comprises a first spray assembly, a filter assembly and a second spray assembly which are provided at the tail end of the hollow tube in the height direction, the annular fan blows air into the hollow tube to suck the dust on the road surface through the venturi tube and blow it to the tail end of the hollow tube, the first spray assembly settles the dust blown to the tail end of the hollow tube to the filter assembly for filtration, and the second spray assembly sprays the road surface to reduce dust.

[0007] As a preferred embodiment, a water inlet hole is provided on the top of the vehicle body, a mounting plate is fixedly provided at the front end of the interior of the vehicle body, a through hole is provided at the front end of the vehicle body corresponding to the hollow tube, a threaded hole is provided at the rear end of the vehicle body corresponding to the hollow tube, a cover plate is threadedly connected to the threaded hole, and a handle is fixedly provided on the cover plate.

[0008] As a preference, a mounting hole is provided at the bottom of the vehicle body, a wheel is provided in the mounting hole, a push rod is fixedly provided on the top of the vehicle body, and two limiting holes a are provided on the top of the vehicle body.

[0009] As a preference, a connecting pipe is fixedly provided between the hollow tube and the annular blower, a ventilation pipe connected thereto is fixedly provided at the bottom of the connecting pipe, and a duckbill nozzle is fixedly connected to the front end of the ventilation pipe.

[0010] As a preference, a circular hole a is provided at the bottom of the hollow tube corresponding to the venturi tube, a connecting hole is provided at the top of the tail end of the hollow tube, and a blanking port is provided at the bottom of the tail end of the hollow tube.

[0011] Preferably, the first spray assembly includes a water pipe a fixedly arranged at the bottom of the water inlet hole, an internal thread a is arranged inside the water pipe a, a spray head a is threadedly connected to the bottom of the water pipe a, and an external thread a is arranged on the spray head a corresponding to the internal thread a.

[0012] As a preference, the filter assembly includes a dust collecting hood fixedly arranged at the bottom of the drop port, a filter screen is arranged inside the dust collecting hood, and a circular hole b is opened at the bottom of the dust collecting hood.

[0013] As a preference, the second spray assembly includes a water pipe b fixedly connected to the bottom of the circular hole b and communicated therewith, an internal thread b is provided inside the water pipe b, a spray head b is threadedly connected to the bottom of the water pipe b, and an external thread b is provided on the spray head b corresponding to the internal thread b.

[0014] As another preferred embodiment, a water outlet is provided at the bottom of the water tank corresponding to the water inlet, a water filling port is provided at the top of the water tank, a slide is provided on the side of the water tank, a baffle is provided for sliding in the slide, a limiting hole b is provided on the baffle corresponding to the limiting hole a, and a pin is provided in the limiting hole b.

[0015] The present invention has the following beneficial effects.

[0016] 1. The present invention is provided with a dust suction mechanism. The annular fan in the dust suction mechanism blows air into the hollow tube. The Venturi tube arranged at the bottom of the hollow tube sucks the dust on the road into the hollow tube through the Venturi effect. The dust sucked into the hollow tube is blown to the tail end of the hollow tube by the wind and is deposited and collected by the dust collecting mechanism, which can greatly reduce the dust on the road surface and make the road surface cleaner after spraying.

[0017] 2. While the annular fan blows air into the hollow tube, the dust on the road surface is blown up through the duckbill nozzle arranged at the front end of the ventilation tube, which is conducive to the dust collection mechanism to collect the dust on the road surface to the largest extent, and further improve the reduction of road dust after maintenance.

[0018] 3. The present invention is provided with a dust collecting mechanism, which sprays and settles the dust sucked into the hollow tube and blown to the bottom of the first spray component through the first spray component in the dust collecting mechanism, so that the dust is deposited in the filter component below the first spray component. The filter component collects the dust and sprays the filtered water onto the road surface through the second spray component below to achieve a dust reduction effect. It can collect dust in a timely and effective manner and have a good dust reduction effect on the road surface. The filter component can filter the water used to deposit dust and then use it for dust reduction, with high resource utilization and green economy.

[0019] In summary, the present invention has the advantages of being able to collect dust in a timely manner, greatly reducing dust on the road surface, high resource utilization, good linkage effect, reduced manual labor intensity, and ingenious structure, and is suitable for the field of bridge construction equipment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a structural diagram of the bridge pavement cleaning and maintenance device; Figure 2 This is a schematic diagram of the axial cross-sectional structure of the bridge pavement cleaning and maintenance device; Figure 3 It is a schematic diagram of the cross-sectional structure of the vehicle body; Figure 4 Schematic diagram of the cross-sectional structure of the water tank; Figure 5 Schematic diagram of the cross-sectional structure of the hollow tube; Figure 6It is a schematic diagram of the position structure of the dust suction mechanism and the dust collection mechanism; Figure 7 for Figure 6 An enlarged schematic diagram of Figure 8 This is a schematic diagram of the state when the dust suction mechanism cooperates with the dust collection mechanism to suction and spray the road surface.

[0021] In the figure: vehicle body 1, water tank 2, dust suction mechanism 3, dust collection mechanism 4, water inlet 11, mounting plate 12, through hole 13, threaded hole 14, cover 15, handle 16, mounting hole 17, wheel 18, push rod 19, limit hole a110, water outlet 21, water inlet 22, chute 23, baffle 24, limit hole b25, latch 26, hollow tube 31, annular fan 32, venturi tube 33, connecting pipe 34, Ventilation pipe 35, duckbill nozzle 36, circular hole a37, connecting hole 38, drop port 39, first spray assembly 41, filter assembly 42, second spray assembly 43, water pipe a410, internal thread a411, spray head a412, external thread a413, dust collection hood 420, filter screen 421, circular hole b422, water pipe b430, internal thread b431, spray head b432, external thread b433. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1

[0024] like Figures 1 to 8As shown, a bridge pavement cleaning and maintenance device includes a vehicle body 1, a water tank 2 is fixedly provided on the top of the vehicle body 1, a plurality of dust suction mechanisms 3 are provided in the width direction of the interior of the vehicle body 1, a dust collecting mechanism 4 is provided at the tail end of the dust suction mechanism 3, the dust suction mechanism 3 includes a hollow tube 31 fixedly provided inside the vehicle body 1 and an annular fan 32 provided at the front end of the hollow tube 31, a plurality of venturi tubes 33 are arranged in an array at the bottom of the hollow tube 31, the dust collecting mechanism 4 includes a first spray assembly 41, a filter assembly 42 and a second spray assembly 43 provided at the tail end of the hollow tube 31 in the height direction, the annular fan 32 blows air into the hollow tube 31, and the dust on the road surface is sucked in through the venturi tube 33 and then blown to the tail end of the hollow tube 31, the first spray assembly 41 deposits the dust blown to the tail end of the hollow tube 31 to the filter assembly 42 for filtration, and the second spray assembly 43 sprays the road surface to reduce dust. The annular fan 32 in the dust suction mechanism 3 blows air into the hollow tube 31, and the venturi tube 33 arranged at the bottom of the hollow tube 31 sucks the dust on the road surface into the hollow tube 31 through the venturi effect. The dust sucked into the hollow tube 31 is blown to the tail end of the hollow tube 31 by the wind and is deposited and collected by the dust collecting mechanism 4, which can greatly reduce the dust on the road surface and make the road surface cleaner after spraying. It solves the problem that the maintenance device in the prior art cannot effectively reduce the dust on the road surface during the maintenance process, cannot collect the dust in a timely and good manner, and easily causes more dust to be deposited on the road surface, affecting the cleanliness of the road surface.

[0025] like Figure 2 、 Figure 3 and Figure 8 As shown, the top of the vehicle body 1 is provided with a water inlet 11, a mounting plate 12 is fixedly mounted on the front end of the vehicle body 1, a through hole 13 is formed at the front end of the vehicle body 1 corresponding to the hollow tube 31, and a threaded hole 14 is formed at the rear end of the vehicle body 1 corresponding to the hollow tube 31. A cover plate 15 is threadedly connected to the threaded hole 14, and a handle 16 is fixedly mounted on the cover plate 15. Water in the water tank 2 is supplied to the first spray assembly 41 and the second spray assembly 43 through the water inlet 11 connected to the water outlet 21. The mounting plate 12 is used to mount the annular fan 32. The through hole 13 formed at the front end of the vehicle body 1 is connected to the hollow tube 31, allowing the annular fan 32 to blow air into the hollow tube 31. The cover plate 15 is threadedly connected to the threaded hole 14 and can be easily assembled and disassembled using the handle 16. After maintenance, the cover plate 15 can be opened and dust collected in the dust hood 420 can be sucked out using a vacuum cleaner or other tool, making cleaning convenient.

[0026] like Figure 1 、 Figure 2 and Figure 3As shown, a mounting hole 17 is provided at the bottom of the vehicle body 1, and a wheel 18 is provided in the mounting hole 17. A push rod 19 is fixedly provided on the top of the vehicle body 1, and two limit holes a110 are provided on the top of the vehicle body 1. The push rod 19 allows the operator to operate the device conveniently and labor-savingly; the depth of the limit hole a110 is half the thickness of the top of the vehicle body 1. When the water outlet 21 needs to be blocked, the pin 26 is first pulled out of the limit hole a110 away from the water tank 2, and then the baffle 24 is pushed into the water tank 2 along the chute 23, and then the pin 26 is inserted into the limit hole a110 near the water tank 2 to limit and fix the baffle 24. At this time, the baffle 24 will block the water outlet 21. 1 blocks the water in the water tank 2 from entering the water pipe a410; when it is necessary to open the water outlet 21 to allow the water in the water tank 2 to enter the water pipe a410, first pull out the latch 26 from the limiting hole a110 close to the water tank 2, then pull the baffle 24 out of the water tank 2 along the chute 23, and then insert the latch 26 into the limiting hole a110 away from the water tank 2 to limit and fix the baffle 24. At this time, the water outlet 21 is connected to the water inlet 11 and the water pipe a410.

[0027] like Figure 3 、 Figure 6 and Figure 8 As shown, a connecting pipe 34 is fixedly provided between the hollow tube 31 and the annular fan 32. A ventilation pipe 35 is fixedly provided at the bottom of the connecting pipe 34 and is in communication therewith. A duckbill nozzle 36 is fixedly connected to the front end of the ventilation pipe 35. One end of the connecting pipe 34 is fixedly connected to the annular fan 32, and the other end is fixedly connected to and in communication with the through hole 13. The annular fan 32 blows air into the interior of the hollow tube 31 through the connecting pipe 34 and the through hole 13, while blowing air into the interior of the ventilation pipe 35 and blowing it out through the duckbill nozzle 36 to lift dust on the road surface. The structure of the duckbill nozzle 36 enables the air to be blown out faster, more powerfully and more effectively, and the dust is blown away more effectively. The duckbill nozzle 36 has a simple structure, is easy to disassemble and clean, and is convenient for maintenance and upkeep. It is conducive to the dust collection mechanism 3 to collect dust on the road surface to the greatest extent possible, further improving the reduction of road dust after maintenance.

[0028] like Figure 5 and Figure 7 As shown, a circular hole a37 is provided at the bottom of the hollow tube 31, corresponding to the venturi tube 33. A connecting hole 38 is provided at the top of the rear end of the hollow tube 31, and a discharge port 39 is provided at the bottom of the rear end of the hollow tube 31. The circular hole a37 at the bottom of the hollow tube 31 is connected to the venturi tube 33, allowing the annular fan 32 to blow air into the interior of the hollow tube 31. When the air passes through the venturi tube 33, it can draw dust from the road surface into the hollow tube 31 through the Venturi effect. The connecting hole 38 is connected and communicated with the water pipe a410, which can spray the rear end of the hollow tube 31 through the spray head a412, causing dust to settle and fall through the discharge port 39 into the dust collection hood 420 below for collection.

[0029] like Figure 7 and Figure 8 As shown, the first spray assembly 41 includes a water pipe a410 fixedly mounted at the bottom of the water inlet 11. The pipe a410 has internal threads a411, and a spray head a412 is threadedly connected to the bottom of the pipe a410. The spray head a412 has external threads a413 corresponding to the internal threads a411. The threaded connection between the spray head a412 and the water pipe a410 facilitates assembly and disassembly and maintenance.

[0030] like Figure 7 and Figure 8 As shown, the filter assembly 42 includes a dust hood 420 fixedly mounted at the bottom of the discharge port 310. A filter screen 421 is located within the dust hood 420, and a circular hole b422 is defined at the bottom of the dust hood 420. Deposited dust, along with the water, falls into the dust hood 420, where it is intercepted and filtered by the filter screen 421. The filtered water then enters the water pipe b430 and is sprayed through the sprinkler head b432, where it is applied to the road surface. The curved bottom of the dust hood 420 allows water to flow smoothly through the circular hole b422 and into the water pipe b430.

[0031] like Figure 7 and Figure 8 As shown, the second spray assembly 43 includes a water pipe b430 fixedly connected to the bottom of the circular hole b422 and communicating therewith. The water pipe b430 has internal threads b431 formed therein. A spray head b432 is threadedly connected to the bottom of the water pipe b430. The spray head b432 has external threads b433 corresponding to the internal threads b431. The threaded connection between the spray head b432 and the water pipe b430 allows for easy assembly and disassembly, facilitating maintenance.

[0032] like Figure 1 、 Figure 2 、 Figure 4 and Figure 8As shown, a water outlet 21 is provided at the bottom of the water tank 2 corresponding to the water inlet 11, a water injection port 22 is provided at the top of the water tank 2, a chute 23 is provided on the side of the water tank 2, a baffle 24 is slidably provided in the chute 23, a limiting hole b25 is provided on the baffle 24 corresponding to the limiting hole a110, and a latch 26 is provided in the limiting hole b25. Water can be added to the water tank 2 through the water injection port 22, and water can be supplied to the first spray assembly 41 and the second spray assembly 43 through the water outlet 21; the interior of the water tank 2 has a slope, so that water can flow out smoothly through the water outlet 21; the latch 26 is slidably provided in the limiting hole b25. When the water outlet 21 needs to be blocked, the latch 26 is first pulled out away from the limiting hole a110 of the water tank 2, then the baffle 24 is pushed into the water tank 2 along the chute 23, and then the latch 26 is inserted into the limiting hole a11 near the water tank 2. 0 to limit and fix the baffle 24. At this time, the baffle 24 blocks the water outlet 21 from the water in the water tank 2 and prevents it from entering the water pipe a410. When the water outlet 21 needs to be opened to allow the water in the water tank 2 to enter the water pipe a410, first pull out the pin 26 from the limit hole a110 close to the water tank 2, then pull the baffle 24 out of the water tank 2 along the slide 23, and then insert the pin 26 into the limit hole a110 away from the water tank 2 to limit and fix the baffle 24. At this time, the water outlet 21 is connected to the water inlet 11 and the water pipe a410.

[0033] The working process is as follows.

[0034] During operation, the staff first turns on the annular fan 32, then pulls out the baffle 24 to remove the obstruction to the water outlet 21, and then pushes the device forward through the push rod 19, and the annular fan 32 blows air into the hollow tube 31. The annular fan 32 blows air into the inside of the hollow tube 31 and blows air into the inside of the ventilation pipe 35 and blows it out through the duckbill nozzle 36 to blow up the dust on the road surface. The Venturi tube 33 provided at the bottom of the hollow tube 31 sucks the dust on the road surface into the hollow tube 31 through the Venturi effect, and the dust sucked into the hollow tube 31 is blown to the hollow tube 3 1, the water in the water tank 2 enters the water pipe a420 and then sprays the tail end of the hollow tube 31 through the spray head a412 to deposit dust and drop into the dust collecting cover 420 below through the drop port 39. The deposited dust falls into the dust collecting cover 420 along with the water and is intercepted and filtered by the filter 421. The filtered water enters the water pipe b430 and then is sprayed out through the spray head b432 to spray the road surface. After the spraying work is completed, first push the baffle 24 inward into the water tank 2 to block the water outlet 21, and then turn off the annular fan 32.

[0035] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0036] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art based on the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bridge pavement cleaning and maintenance device, comprising a vehicle body (1), characterized in that: A water tank (2) is fixedly provided on the top of the vehicle body (1), a plurality of dust suction mechanisms (3) are provided in the width direction of the interior of the vehicle body (1), a dust collecting mechanism (4) is provided at the rear end of the dust suction mechanism (3), the dust suction mechanism (3) comprises a hollow tube (31) fixedly provided inside the vehicle body (1) and an annular fan (32) provided at the front end of the hollow tube (31), a plurality of venturi tubes (33) are provided in an array at the bottom of the hollow tube (31), the dust collecting mechanism (4) comprises a high A first spray assembly (41), a filter assembly (42), and a second spray assembly (43) are arranged at the rear end of the hollow tube (31) in a vertical direction. The annular fan (32) blows air into the interior of the hollow tube (31) through the venturi tube (33) to suck dust on the road surface and blow it to the rear end of the hollow tube (31). The first spray assembly (41) deposits the dust blown to the rear end of the hollow tube (31) into the filter assembly (42) for filtration. The second spray assembly (43) sprays the road surface to reduce dust.

2. A bridge pavement cleaning and maintenance device according to claim 1, characterized in that: A water inlet hole (11) is provided on the top of the vehicle body (1), a mounting plate (12) is fixedly provided on the front end of the interior of the vehicle body (1), a through hole (13) is provided on the front end of the vehicle body (1) corresponding to the hollow tube (31), a threaded hole (14) is provided on the rear end of the vehicle body (1) corresponding to the hollow tube (31), a cover plate (15) is threadedly connected to the threaded hole (14), and a handle (16) is fixedly provided on the cover plate (15).

3. A bridge pavement cleaning and maintenance device according to claim 2, characterized in that: The bottom of the vehicle body (1) is provided with a mounting hole (17), a wheel (18) is provided in the mounting hole (17), a push rod (19) is fixedly provided on the top of the vehicle body (1), and two limiting holes a (110) are provided on the top of the vehicle body (1).

4. A bridge pavement cleaning and maintenance device according to claim 3, characterized in that: A connecting pipe (34) is fixedly provided between the hollow pipe (31) and the annular fan (32), a ventilation pipe (35) communicating with the connecting pipe (34) is fixedly provided at the bottom thereof, and a duckbill nozzle (36) is fixedly connected to the front end of the ventilation pipe (35).

5. A bridge pavement cleaning and maintenance device according to claim 4, characterized in that: A circular hole a (37) is provided at the bottom of the hollow tube (31) corresponding to the venturi tube (33), a connecting hole (38) is provided at the top of the tail end of the hollow tube (31), and a blanking port (39) is provided at the bottom of the tail end of the hollow tube (31).

6. A bridge pavement cleaning and maintenance device according to claim 5, characterized in that: The first spray assembly (41) comprises a water pipe a (410) fixedly arranged at the bottom of the water inlet hole (11), an internal thread a (411) being provided inside the water pipe a (410), a spray head a (412) being threadedly connected to the bottom of the water pipe a (410), and an external thread a (413) being provided on the spray head a (412) corresponding to the internal thread a (411).

7. A bridge pavement cleaning and maintenance device according to claim 6, characterized in that: The filter assembly (42) comprises a dust collecting cover (420) fixedly arranged at the bottom of the material drop opening (310), a filter screen (421) being arranged inside the dust collecting cover (420), and a circular hole b (422) being opened at the bottom of the dust collecting cover (420).

8. A bridge pavement cleaning and maintenance device according to claim 7, characterized in that: The second spray assembly (43) includes a water pipe b (430) fixedly connected to the bottom of the circular hole b (422) and communicating therewith, an internal thread b (431) is provided inside the water pipe b (430), a spray head b (432) is threadedly connected to the bottom of the water pipe b (430), and an external thread b (433) is provided on the spray head b (432) corresponding to the internal thread b (431).

9. The bridge pavement cleaning and maintenance device according to claim 8, characterized in that: A water outlet hole (21) is provided at the bottom of the water tank (2) corresponding to the water inlet hole (11), a water inlet (22) is provided at the top of the water tank (2), a chute (23) is provided on the side of the water tank (2), a baffle (24) is slidably provided in the chute (23), a limiting hole b (25) is provided on the baffle (24) corresponding to the limiting hole a (110), and a latch (26) is provided in the limiting hole b (25).

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