Spraying and dust-settling maintenance construction device for road, bridge and tunnel construction

Abstract

The invention discloses a spraying and dust-settling maintenance construction device for road, bridge and tunnel construction, and relates to the technical field of building construction. The spraying and dust-settling maintenance construction device comprises a movable bottom plate, a water storage tank is fixed to the top end of the movable bottom plate, a tank cover is fixed to the top end of the water storage tank, and a dust removal tank is fixed to the top end of the tank cover; the lifting adjusting mechanism drives the driving box and the rotary table at the top end of the driving box to ascend and descend, the spraying barrel is adjusted to the corresponding height, the rotary adjusting mechanism drives the rotary table and the spraying barrel above the rotary table to horizontally rotate, and meanwhile the inclination adjusting mechanism drives the spraying barrel to be obliquely adjusted at the top end of the supporting rod. Therefore, the spraying cylinder of the device is more flexible, the spraying dust-settling direction can be conveniently adjusted according to actual needs, the spraying dust-settling range is expanded to a certain extent, residual dust in air is sucked into the dust-settling box through the dust-settling mechanism on the dust-settling box during spraying dust-settling, and the dust-settling effect is improved. And the spraying mechanism is used for spraying the dust sucked into the dust removal box for dust falling, so that the dust in the air is fully and effectively removed.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a spray dust reduction maintenance construction device for road, bridge and tunnel construction. Background Art

[0002] With the progress of economy, cities are gradually developing. Many cities are building roads, bridges, tunnels and other facilities. Road, bridge and tunnel construction refers to a series of engineering activities such as excavation, support and lining of tunnel parts in road and bridge construction. This type of construction usually involves the development of underground space, including mountain tunnels, urban underground passages, submarine tunnels and other types.

[0003] During the construction of roads, bridges and tunnels, a lot of dust will be generated, which will cause the PM2.5 at the construction site to seriously exceed the standard. Workers will inhale these small particles of dust while working, which will affect their health in the long run. Therefore, it is necessary to use corresponding spray dust reduction maintenance devices to carry out spray maintenance work at the road, bridge and tunnel construction site. The spray dust reduction maintenance device is a dust reduction equipment specially used in the construction process. Its main function is to reduce the dust concentration in the air by spraying water mist, improve the construction environment, protect the health of construction workers, and reduce the impact on the surrounding environment.

[0004] Most of the existing spray dust reduction maintenance construction devices for road, bridge and tunnel construction have a single structure, are not flexible enough, and cannot conveniently adjust the spray dust reduction maintenance direction, resulting in a limited dust reduction range, thereby reducing the spray dust reduction efficiency during the road, bridge and tunnel construction process to a certain extent. In addition, the existing spray dust reduction maintenance construction devices for road, bridge and tunnel construction have a single function and only have a single spray function, which cannot fully and effectively remove dust in the air and has a poor dust removal effect. Therefore, the present invention proposes a spray dust reduction maintenance construction device for road, bridge and tunnel construction to solve the problems existing in the prior art. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to propose a spray dust reduction maintenance construction device for road, bridge and tunnel construction, so as to solve the problems that the existing spray dust reduction maintenance construction device for road, bridge and tunnel construction cannot conveniently adjust the spray dust reduction maintenance direction, resulting in a limited dust reduction range, and only has a single spray function, which cannot fully and effectively remove dust in the air and has a poor dust removal effect.

[0006] In order to achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: a spray dust reduction maintenance construction device for road, bridge and tunnel construction, including a movable base plate, a water storage tank is fixed on the top of the movable base plate, a box cover is fixed on the top of the water storage tank, a dust removal box is fixed on the top of the box cover, a dust suction mechanism and a spray mechanism connected to the water storage tank are provided on the dust removal box, a drainage pipe penetrating the box cover is fixed to the bottom of the dust removal box, an impurity filtering screen is inserted and connected to the upper part of the water storage tank, a driving box driven to rise and fall by a lifting and adjusting mechanism is provided on the side of the top of the movable base plate away from the water storage tank, a turntable driven to rotate by a rotation adjusting mechanism is rotatably connected to the top of the driving box, support rods are symmetrically fixed to the top of the turntable, a spray barrel driven to tilt by a tilt adjusting mechanism is hinged on the top of the support rod, and a spray dust reduction mechanism connected to the water storage tank is provided inside the spray barrel.

[0007] A further improvement is that the dust removal mechanism includes a dust hood fixed to the top of the dust removal box and an air pump fixed to the side wall of the dust removal box away from the spray tube, the air intake port of the air pump input end is located inside the dust removal box, and a dust suction pipe is fixed to the bottom end of the dust hood and penetrates into the dust removal box.

[0008] Further improvements are: the spray mechanism includes a first water injection pipe that passes through the top of the dust removal box and a spray pipe fixed to the bottom of the first water injection pipe, spray heads are equidistantly fixed to the bottom of the spray pipe, a first water pump is fixed to the side wall of the water storage tank away from the drive box, and a first water supply hose is connected between the output end of the first water pump and the first water injection pipe.

[0009] A further improvement is that a support block and an engaging plug column fixed to the top of the support block are symmetrically fixed to the upper part of the inner wall of the water tank, and sockets adapted to the engaging plug column are symmetrically opened on the impurity filtering screen plate.

[0010] A further improvement is that the lifting and lowering adjustment mechanism includes a bottom box fixed to the top of the movable bottom plate and a first sliding rod fixed to the bottom of the driving box, a bidirectional screw rod is rotatably connected inside the bottom box and driven to rotate by a turning handle, threaded plates are threadedly sleeved on both sides of the bidirectional screw rod, slides are slidably connected on both sides of the first sliding rod, and a scissors frame symmetrically distributed front and back is hinged between the two groups of threaded plates and the two groups of slides.

[0011] A further improvement is that the rotation adjustment mechanism includes a servo motor fixed inside the drive box and a rotating shaft fixed to the bottom end of the turntable, the output end of the servo motor is fixed with a first sprocket, the lower part of the rotating shaft passes through the interior of the drive box through a bearing and is fixedly sleeved with a second sprocket that is transmission-connected to the first sprocket.

[0012] A further improvement is that the tilt adjustment mechanism comprises a cylinder fixed to the top of the turntable and a second slide bar fixed to the bottom of the spray barrel, and a slider hinged to the output end of the cylinder is slidably connected to the second slide bar.

[0013] A further improvement is that the spray dust suppression mechanism includes a second water injection pipe that passes through the top of the spray barrel and an annular tube fixed to the bottom end of the second water injection pipe, an atomizing nozzle is equidistantly fixed on the side of the annular tube away from the inner wall of the spray barrel, a powerful fan is fixed on the side wall of the spray barrel close to the water tank, a second water pump is fixed on the side wall of the water tank close to the drive box, and a second water supply hose is connected between the output end of the second water pump and the second water injection pipe.

[0014] A further improvement is that: bottom blocks are fixed to the upper parts of the outer walls on both sides of the water tank, an electric telescopic rod is fixed to the top of the bottom block, top blocks are fixed to the outer walls on both sides of the box cover, and the top of the electric telescopic rod is fixed to the bottom of the top block.

[0015] A further improvement is that a support plate is fixed to the upper part of the inner wall of the water tank, a liquid level sensor extending to the bottom of the water tank is hung at the bottom of the support plate, and a display electrically connected to the liquid level sensor is fixed to the front of the water tank.

[0016] The beneficial effects of the present invention are as follows: the present invention drives the driving box and the turntable on the top of the driving box to move up and down through the lifting and adjusting mechanism, adjusts the spray barrel to the corresponding height, and drives the turntable and the spray barrel above it to rotate horizontally through the rotating adjusting mechanism, and drives the spray barrel to tilt and adjust at the top of the supporting rod through the tilting adjusting mechanism, so that the spray barrel of the device is more flexible, and the spray dust reduction direction is convenient for convenient adjustment according to actual needs, which expands the spray dust reduction range to a certain extent and improves the spray dust reduction efficiency. At the same time as the spray dust reduction, the dust remaining in the air is sucked into the dust removal box through the dust removal mechanism on the dust removal box, and the dust sucked into the dust removal box is sprayed and dusted by the spray mechanism, so that the dust in the air is fully and effectively removed, and the dust removal effect at the road, bridge and tunnel construction site is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of the present invention; Figure 2 is a front cross-sectional view of the present invention; Figure 3 The present invention Figure 2 A in the enlarged view; Figure 4 It is a cross-sectional view of the base box and the drive box of the present invention.

[0018] Among them: 1. movable bottom plate; 2. water storage tank; 3. tank cover; 4. dust removal box; 5. drainage pipe; 6. impurity filter screen; 7. drive box; 8. turntable; 9. support rod; 10. spray gun; 11. dust cover; 12. vacuum pump; 13. dust suction pipe; 14. first water injection pipe; 15. spray pipe; 16. first water pump; 17. first water delivery hose; 18. support block; 19. embedded plug column; 20. bottom box; 21. first slide bar; 22. handle; 23. double 1. Screw rod; 24. Threaded plate; 25. Slide plate; 26. Scissor frame; 27. Servomotor; 28. Rotating shaft; 29. ​​First sprocket; 30. Second sprocket; 31. Cylinder; 32. Second slide bar; 33. Sliding block; 34. Second water injection pipe; 35. Ring pipe; 36. Powerful fan; 37. Second water pump; 38. Second water delivery hose; 39. Bottom block; 40. Electric telescopic rod; 41. Top block; 42. Support plate; 43. Liquid level sensor; 44. Display. DETAILED DESCRIPTION

[0019] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The present embodiment provides a spray dust reduction maintenance construction device for road, bridge and tunnel construction, comprising a mobile base plate 1 with universal wheels at the four corners of the bottom and a water tank 2 fixed to the top of the mobile base plate 1 by bolts. The installation of the universal wheels facilitates the movement and transfer of the device. The water tank 2 is used to store water for spraying. A box cover 3 is fixed to the top of the water tank 2. A sealing ring is used to improve the sealing between the box cover 3 and the water tank 2. A dust removal box 4 is fixed to the top of the box cover 3 by welding four groups of support members that are symmetrically distributed. The dust removal box 4 is provided with a dust suction mechanism for sucking dust in the air into the dust removal box 4 and a dust removal mechanism for removing dust. A spray mechanism for spraying dust in the dust box 4 to reduce dust is provided. The spray mechanism is connected to the water storage tank 2, and water for spraying is supplied to the spray mechanism through the water storage tank 2. A drain pipe 5 is fixed at the bottom end of the dust removal box 4, and the bottom end of the drain pipe 5 passes through the box cover 3. A control valve is installed on the drain pipe 5 to control drainage. An impurity filter screen plate 6 for filtering dust impurities in the water is inserted and inserted at the top of the water storage tank 2. The water sprayed by the spray mechanism is mixed with dust in the air and flows into the water storage tank 2 from the drain pipe 5, and is filtered and removed by the impurity filter screen plate 6 and then merged into the water storage at the bottom of the water storage tank 2, so that the water can be recycled. A lifting adjustment mechanism is provided on the left side of the top of the movable bottom plate 1, and a driving box 7 is connected through the lifting adjustment mechanism, and the driving box 7 is driven and lifted by the lifting adjustment mechanism. A turntable 8 is rotatably connected to the top of the driving box 7, and the turntable 8 is driven and rotated by the rotation adjustment mechanism. Support rods 9 symmetrically distributed front and back are fixed to the left side of the top of the turntable 8 by bolts. A spray barrel 10 is hingedly connected to the top of the two groups of support rods 9 through hinges, and the spray barrel 10 is driven by the tilt adjustment mechanism and rotated and tilted along the top of the support rod 9. The left side of the spray barrel 10 is designed to be open, which is convenient for spraying water mist. A spray dust reduction mechanism for spraying dust in the air is provided inside 10, and the spray dust reduction mechanism is connected to the water storage tank 2, and the water storage tank 2 supplies spray water to the spray dust reduction mechanism. The driving box 7 and the turntable 8 at the top thereof are driven to move up and down through the lifting and adjusting mechanism, and the spray barrel 10 is adjusted to a corresponding height. The turntable 8 and the spray barrel 10 above it are driven to rotate horizontally through the rotating adjusting mechanism, and the spray barrel 10 is driven to tilt and adjust at the top of the support rod 9 through the tilt adjusting mechanism, so that the spray barrel 10 of the device is more flexible, and the spray dust reduction direction is conveniently adjusted according to actual needs; While spraying dust reduction, the dust remaining in the air is sucked into the dust removal box 4 through the dust removal mechanism on the dust removal box 4, and the dust sucked into the dust removal box 4 is sprayed and dusted by the spray mechanism, so that the dust in the air is fully and effectively removed.

[0021] The dust removal mechanism comprises a dust hood 11 and an air pump 12, wherein the dust hood 11 is fixed to the left side of the top of the dust box 4, the air pump 12 is fixed to the right side wall of the dust box 4 by bolts, the air suction port at the input end of the air pump 12 is located inside the dust box 4, and the air outlet at the output end of the air pump 12 is located outside the dust box 4, a dust suction pipe 13 is fixed to the bottom end of the dust hood 11, and the dust suction pipe 13 penetrates into the dust box 4, the dust box 4 is sucked by turning on the air pump 12, so that suction is generated in the dust box 4, and the dust hood 11 is used to suck the outside air together with the dust into the dust box 4 through the dust suction pipe 13.

[0022] The spray mechanism includes a first water injection pipe 14 and a spray pipe 15, wherein the first water injection pipe 14 passes through the top of the dust removal box 4, the bottom end of the first water injection pipe 14 is located inside the dust removal box 4 and is fixed with the spray pipe 15, and the bottom end of the spray pipe 15 is fixed with spray heads distributed equidistantly, and a first water pump 16 is fixed to the right side wall of the water storage tank 2, and the water inlet of the input end of the first water pump 16 passes through the water storage tank 2, and the water outlet of the output end of the first water pump 16 is connected to the first water delivery hose 17, and the end of the first water delivery hose 17 away from the first water pump 16 is fixedly connected to the first water injection pipe 14, the water in the water storage tank 2 is pumped out by the first water pump 16, and injected into the spray pipe 15 through the first water delivery hose 17 and the first water injection pipe 14, and then the water is sprayed out by the spray head at the bottom of the spray pipe 15 to realize spray dust reduction.

[0023] A symmetrically distributed support block 18 is welded and fixed to the upper part of the inner wall of the water tank 2, and an engaging plug post 19 is welded and fixed to the top of the support block 18. The impurity filter screen plate 6 is symmetrically provided with insertion holes, and the insertion holes are adapted to the engaging plug posts 19. When the impurity filter screen plate 6 is placed in the water tank 2, the engaging plug posts 19 are inserted into the insertion holes to realize the engaging connection of the impurity filter screen plate 6 in the water tank 2, so that the impurity filter screen plate 6 is easy to disassemble and assemble.

[0024] The lifting and lowering adjustment mechanism includes a bottom box 20 and a first slide bar 21, wherein the bottom box 20 is fixed to the left side of the top of the movable bottom plate 1 by bolts, and a fixed block symmetrically distributed in the left and right directions is fixed to the bottom end of the driving box 7, and the first slide bar 21 is fixed between the two groups of fixed blocks at the bottom end of the driving box 7, and a bidirectional screw rod 23 is rotatably connected to the inside of the bottom box 20 through a bearing, and the left end of the bidirectional screw rod 23 passes through the bearing to the outside of the bottom box 20 and is fixed with a turning handle 22, and both sides of the bidirectional screw rod 23 are threadedly sleeved with threaded plates 24 and the threaded connection directions are opposite, and the threaded plates 24 are slidably fitted with the inner wall of the bottom box 20, and both sides of the first slide bar 21 are slidably connected with slide plates 25, and a scissor frame 26 symmetrically distributed in the front and back is hinged between the two groups of threaded plates 24 and the two groups of slide plates 25, and the bidirectional screw rod 23 is driven to rotate by rotating the turning handle 22, so that the threaded plates 24 threadedly sleeved on both sides of the bidirectional screw rod 23 are displaced in opposite directions to drive the scissors frame 26 to extend and retract, and the scissors frame 26 drives the driving box 7 to achieve lifting displacement during the extension and retraction process.

[0025] The rotation adjustment mechanism includes a servo motor 27 and a rotating shaft 28, wherein the servo motor 27 is fixed to the bottom end of the driving box 7 by bolts, and the rotating shaft 28 is fixed to the bottom end of the turntable 8 by bolts. A first sprocket 29 is fixed to the output end of the servo motor 27, and the lower part of the rotating shaft 28 passes through the driving box 7 through a bearing and is fixedly sleeved with a second sprocket 30. The rotating shaft 28 is rotatably connected to the bottom end of the driving box 7 through a bearing, and the second sprocket 30 and the first sprocket 29 are jointly sleeved with a chain and are connected through a chain transmission. The first sprocket 29 at its output end is driven to rotate by the servo motor 27, and the first sprocket 29 drives the second sprocket 30 to rotate through the chain, and the second sprocket 30 drives the rotating shaft 28 to rotate, thereby realizing the rotation of the turntable 8.

[0026] The tilt adjustment mechanism includes a cylinder 31 and a second slide bar 32, wherein the cylinder 31 is fixed to the right side of the top of the turntable 8 by bolts, and the second slide bar 32 is fixed to the right side of the bottom end of the spray barrel 10. A slider 33 is slidably connected to the second slide bar 32, and the bottom end of the slider 33 is hinged to the output end of the cylinder 31 through a hinge. The output end of the cylinder 31 is ejected or retracted, so that the spray barrel 10 is rotated and tilted along the top of the support rod 9.

[0027] The spray dust suppression mechanism includes a second water injection pipe 34 and an annular pipe 35, wherein the second water injection pipe 34 passes through the top of the spray barrel 10, the annular pipe 35 is fixed to the bottom of the second water injection pipe 34 and fits the inner wall of the spray barrel 10, and the side of the annular pipe 35 away from the inner wall of the spray barrel 10 is fixed with atomizing nozzles distributed in an annular manner and equidistantly, a powerful fan 36 is fixed to the right side wall of the spray barrel 10 by bolts, a second water pump 37 is fixed to the left side wall of the water storage tank 2, and the water inlet at the input end of the second water pump 37 passes through the storage tank 2. In the water tank 2, the water outlet at the output end of the second water pump 37 is connected to the second water hose 38, and one end of the second water hose 38 away from the second water pump 37 is connected to the second water injection pipe 34. The water in the water tank 2 is injected into the annular tube 35 through the second water hose 38 and the second water injection pipe 34 by the second water pump 37, and then sprayed out by the atomizing nozzle. At the same time, the powerful fan 36 is started to blow air in the direction of the annular tube 35, so that water mist is sprayed out from the spray barrel 10, thereby realizing spray dust reduction on dust in the external air.

[0028] Bottom blocks 39 are welded and fixed to the upper parts of the left and right outer walls of the water storage tank 2, and an electric telescopic rod 40 is fixed to the top of the bottom block 39 by bolts. Top blocks 41 located above the bottom block 39 are fixed to the left and right outer walls of the box cover 3, and the top of the electric telescopic rod 40 is fixed to the bottom of the top block 41 by bolts. The top block 41 at the output end of the electric telescopic rod 40 is driven to rise and fall, which can drive the box cover 3 to rise and fall accordingly, thereby realizing automatic opening and closing of the water storage tank 2 without manual operation, saving time and effort.

[0029] A support plate 42 located below the impurity filtering screen plate 6 is welded and fixed to the upper part of the rear inner part of the water tank 2, and a liquid level sensor 43 for detecting the water level height in the water tank 2 is suspended at the bottom end of the support plate 42. The liquid level sensor 43 extends to the bottom end of the water tank 2 in a suspended manner, and a display 44 is fixed to the front of the water tank 2 by screws. The liquid level sensor 43 is connected to the PLC control system of the device, and is used to send the detected liquid level height value in the water tank 2 to the display 44 for display, so that the user can understand the liquid level height in the water tank 2 in real time and can replenish water in time.

[0030] When it is necessary to carry out spray dust reduction maintenance work on the construction site during the construction of a road, bridge or tunnel, the device is first pushed to the construction site of the road, bridge or tunnel, and then the lifting and adjusting mechanism is used to drive the driving box 7 and the turntable 8 at the top thereof to lift and displace, and the spray barrel 10 is adjusted to the corresponding height according to the actual required spray dust reduction height, and then the spray dust reduction mechanism in the spray barrel 10 is used to spray and reduce dust in the air. During the spray dust reduction process, the rotating adjustment mechanism is used to drive the turntable 8 to rotate, and during the rotation of the turntable 8, the spray barrel 10 above it is driven to rotate synchronously within a certain range to achieve horizontal adjustment of the spray direction, and then the tilt adjustment mechanism is used to drive the spray barrel 10 to tilt and adjust within a certain range at the top of the support rod 9 to achieve longitudinal adjustment of the spray direction to expand the spray dust reduction range; While spraying to reduce dust, the dust removal mechanism on the dust removal box 4 is used to suck the remaining dust in the air into the dust removal box 4, and the dust sucked into the dust removal box 4 is sprayed to reduce dust by the spray mechanism, so that the dust in the air is fully removed under the dual effects of the spray barrel 10 and the dust removal box 4.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray dust reduction maintenance construction device for road, bridge and tunnel construction, comprising a movable bottom plate (1), characterized in that: A water tank (2) is fixed to the top of the movable bottom plate (1), a box cover (3) is fixed to the top of the water tank (2), a dust removal box (4) is fixed to the top of the box cover (3), a dust suction mechanism and a spray mechanism connected to the water tank (2) are provided on the dust removal box (4), a drainage pipe (5) penetrating the box cover (3) is fixed to the bottom of the dust removal box (4), an impurity filtering screen plate (6) is inserted and connected to the top of the water tank (2), a driving box (7) driven to rise and fall by a lifting adjustment mechanism is provided on the top of the movable bottom plate (1) away from the water tank (2), a turntable (8) driven to rotate by a rotation adjustment mechanism is rotatably connected to the top of the drive box (7), a support rod (9) is symmetrically fixed to the top of the turntable (8), a spray barrel (10) driven to tilt by a tilt adjustment mechanism is hinged to the top of the support rod (9), and a spray dust reduction mechanism connected to the water tank (2) is provided inside the spray barrel (10).

2. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The dust removal mechanism comprises a dust hood (11) fixed to the top of the dust removal box (4) and an air pump (12) fixed to the side wall of the dust removal box (4) away from the spray barrel (10), the air inlet of the air pump (12) being located inside the dust removal box (4), and a dust suction pipe (13) penetrating into the dust removal box (4) being fixed to the bottom of the dust hood (11).

3. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The spray mechanism comprises a first water injection pipe (14) penetrating the top of the dust removal box (4) and a spray pipe (15) fixed to the bottom of the first water injection pipe (14), spray heads being fixed equidistantly to the bottom of the spray pipe (15), a first water pump (16) being fixed to a side wall of the water storage tank (2) away from the drive box (7), and a first water delivery hose (17) being connected between the output end of the first water pump (16) and the first water injection pipe (14).

4. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: A support block (18) and an engaging plug post (19) fixed to the top of the support block (18) are symmetrically fixed to the upper portion of the inner side wall of the water storage tank (2), and plug holes adapted to the engaging plug post (19) are symmetrically provided on the impurity filtering screen plate (6).

5. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The lifting and lowering adjustment mechanism comprises a bottom box (20) fixed to the top of the movable bottom plate (1) and a first slide bar (21) fixed to the bottom of the driving box (7); a bidirectional screw rod (23) is rotatably connected inside the bottom box (20) and is driven to rotate by a turning handle (22); threaded plates (24) are threadedly sleeved on both sides of the bidirectional screw rod (23); slide bars (25) are slidably connected on both sides of the first slide bar (21); and scissor frames (26) symmetrically distributed frontward and rearward are hingedly connected between the two groups of the threaded plates (24) and the two groups of the slide bars (25).

6. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The rotation adjustment mechanism comprises a servo motor (27) fixed inside the driving box (7) and a rotating shaft (28) fixed to the bottom end of the turntable (8); a first sprocket (29) is fixed to the output end of the servo motor (27); a lower portion of the rotating shaft (28) penetrates into the driving box (7) through a bearing and is fixedly sleeved with a second sprocket (30) drivingly connected to the first sprocket (29).

7. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The tilt adjustment mechanism comprises a cylinder (31) fixed to the top end of the turntable (8) and a second slide bar (32) fixed to the bottom end of the spray barrel (10), wherein the second slide bar (32) is slidably connected to a slider (33) hinged to the output end of the cylinder (31).

8. The spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: The spray dust suppression mechanism comprises a second water injection pipe (34) penetrating the top end of the spray barrel (10) and an annular pipe (35) fixed to the bottom end of the second water injection pipe (34); an atomizing nozzle is fixed equidistantly on the side of the annular pipe (35) away from the inner wall of the spray barrel (10); a powerful fan (36) is fixed on the side wall of the spray barrel (10) close to the water storage tank (2); a second water pump (37) is fixed on the side wall of the water storage tank (2) close to the drive box (7); and a second water delivery hose (38) is connected between the output end of the second water pump (37) and the second water injection pipe (34).

9. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: Bottom blocks (39) are fixed to the upper parts of the outer walls on both sides of the water storage tank (2), and an electric telescopic rod (40) is fixed to the top end of the bottom block (39). Top blocks (41) are fixed to the outer walls on both sides of the tank cover (3), and the top end of the electric telescopic rod (40) is fixed to the bottom end of the top block (41).

10. A spray dust reduction maintenance construction device for road, bridge and tunnel construction according to claim 1, characterized in that: A support plate (42) is fixed to the upper part of the inner wall of the water storage tank (2); a liquid level sensor (43) extending to the inner bottom of the water storage tank (2) is suspended at the bottom end of the support plate (42); and a display (44) electrically connected to the liquid level sensor (43) is fixed to the front of the water storage tank (2).

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