Spraying dust falling device for road and bridge construction

Abstract

The invention discloses a spraying dust falling device for road and bridge construction, relates to the technical field of road and bridge construction dust falling, and provides the following scheme that the spraying dust falling device comprises a base, a machine body rotating on the base and a spraying head, and further comprises an elevation angle adjusting mechanism arranged above the machine body and used for adjusting the degree of freedom of the elevation angle of the spraying head; and the height adjusting mechanism is arranged in the machine body. The device integrates triple adjustment functions of elevation angle, height and transverse rotation, realizes all-directional dead-corner-free dust falling and coverage of multiple areas such as high altitude of a bridge and a road surface through transmission structures such as gears and bevel gears, can quickly switch adjustment modes without additional power by virtue of a driving and switching adjustment mechanism, is convenient to operate, replaces flood irrigation with directional spraying, and is high in practicability. The water resource utilization rate is high, operation is stable, blockage is prevented, the base can be flexibly fixed and is adaptive to various construction scenes such as drilling and cutting, the problems that a traditional device is narrow in coverage and poor in adaptation, and water resources are wasted are effectively solved, and the dust falling efficiency and practicability are greatly improved.

Description

A dust suppression spraying device for road and bridge construction Technical Field

[0001] This invention relates to the field of dust suppression technology in road and bridge construction, and in particular to a spray dust suppression device for road and bridge construction. Background Technology

[0002] During road and bridge construction, drilling, cutting, and material handling operations generate a large amount of dust. This dust not only reduces visibility at the construction site and affects the construction progress, but also endangers the health of construction workers and pollutes the surrounding air. Currently, the most common dust suppression methods at construction sites are water truck spraying or fixed nozzles, which have many drawbacks: traditional water trucks spray large volumes of water, which can easily make the bridge surface slippery, affecting construction safety, and also wastes a lot of water resources; fixed nozzles have a limited spray range and cannot achieve multi-angle, large-area coverage, especially for high-altitude work areas on bridges, where the dust suppression effect is poor; existing mobile dust suppression devices can only achieve single-direction spraying adjustment, which is difficult to adapt to the complex working scenarios in road and bridge construction, and some devices have problems such as nozzle clogging and low dust suppression efficiency. Therefore, there is an urgent need for a spray dust suppression device that is suitable for road and bridge construction scenarios, has a wide coverage range, high dust suppression efficiency, and stable operation. Summary of the Invention

[0003] The present invention provides a dust suppression spraying device for road and bridge construction, which solves the above-mentioned shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a dust suppression spraying device for road and bridge construction, comprising a base, a body rotating on the base, and a spray head, further comprising: an elevation angle adjustment mechanism located above the body for adjusting the elevation angle of the spray head; a height adjustment mechanism located inside the body for adjusting the height of the spray head; a rotation angle adjustment mechanism located inside the base for adjusting the overall lateral angle rotation of the body; a switching adjustment mechanism located inside the body for switching the power output between the elevation angle adjustment mechanism and the height adjustment mechanism; and a drive mechanism located inside the body for providing power output to the elevation angle adjustment mechanism and the height adjustment mechanism.

[0005] Furthermore, the height adjustment mechanism includes a first fixed plate fixedly connected to the inside of the machine body. A threaded sleeve is rotatably connected to one side of the top of the first fixed plate. A lifting tube is threadedly connected to the outside of the threaded sleeve. A fixed frame is fixedly connected to the top of the lifting tube. A guide block is fixedly connected to one side of the lifting tube. A guide rod is fixedly connected to the inside of the machine body. The guide rod is movably sleeved inside the guide block.

[0006] Furthermore, a transmission rod is rotatably connected to one side of the first fixed plate, a first gear is fixedly connected to the top of the transmission rod, and a gear ring is fixedly connected to the lower part of the threaded sleeve corresponding to the first gear, with one side of the gear ring meshing with the first gear for transmission.

[0007] Furthermore, the elevation adjustment mechanism includes a linkage sleeve rotatably connected to the first fixed plate. A linkage rod is movably fitted inside the linkage sleeve. One end of the linkage rod movably passes through the top of the lifting pipe. A second gear is fixedly connected to the top of the linkage rod. A rotating shaft is rotatably connected to the fixed frame. A different gear is fixedly connected to the rotating shaft at the position corresponding to the second gear. One side of the different gear meshes with the second gear. The two ends of the rotating shaft are fixedly connected to the same linkage frame. The spray head is fixedly connected to one side of the linkage frame. A second fixed plate is fixedly connected inside the machine body. The second fixed plate has a movable hole at the position corresponding to the threaded sleeve. The threaded sleeve is movably fitted inside the movable hole. The bottom end of the guide rod is fixedly connected to the top of the second fixed plate.

[0008] Furthermore, the rotation angle adjustment mechanism includes a first motor fixedly connected to the inside of the base, a first bevel gear fixedly connected to the output shaft of the first motor, a connecting rod rotatably connected inside the base, a second bevel gear fixedly connected to the connecting rod at a position corresponding to the first bevel gear, one side of the second bevel gear meshing with the first bevel gear for transmission, and the top end of the connecting rod penetrating the bottom of the machine body and fixedly connected to the bottom of the first fixed plate.

[0009] Furthermore, the switching and adjusting mechanism includes a push rod motor fixedly connected to the inside of the machine body. A push plate is fixedly connected to the output end of the push rod motor. An installation hole is provided on the push plate. A movable sleeve is rotatably connected inside the installation hole. A third gear is fixedly connected to the top of the movable sleeve. A fourth gear is fixedly connected to the bottom of the movable sleeve. The movable sleeve is movably sleeved on the outside of the connecting rod.

[0010] Furthermore, the switching adjustment mechanism also includes a first driven gear fixedly connected to the linkage sleeve, one side of the first driven gear indirectly meshing with a third gear, and a second driven gear fixedly connected to the bottom end of the transmission rod, one side of the second driven gear indirectly meshing with a fourth gear.

[0011] Furthermore, the drive mechanism includes a second motor fixedly connected to the interior of the machine body, and a gear column fixedly connected to the output shaft of the second motor, one side of which is slidably engaged with a fourth gear for transmission.

[0012] Furthermore, a limiting block is fixedly connected to the bottom of the linkage rod, and limiting grooves are opened on both sides of the linkage sleeve corresponding to the limiting block, with the limiting block movably sleeved inside the limiting groove.

[0013] Furthermore, mounting slots are provided on both sides of the base, and a water inlet pipe is fixedly connected to one end of the spray head, while the other end of the water inlet pipe is connected to an external spray water tank.

[0014] Compared with existing technologies, the beneficial effects of this invention are: 1. This invention integrates three adjustment functions: elevation angle, height, and lateral rotation. The elevation angle adjustment mechanism drives the spray head to swing through gear meshing; the height adjustment mechanism achieves lifting and lowering through threaded transmission; and the rotation mechanism drives the machine body to rotate 360 ​​degrees through bevel gear transmission. This breaks through the coverage limitations of traditional fixed spray heads or water trucks. The synergistic effect of the three adjustments can accurately adapt to different working areas such as high-altitude bridges and roads, achieving all-round, no-dead-angle dust suppression and significantly improving the coverage and targeting of dust suppression; 2. This invention uses a drive mechanism and a switching adjustment mechanism in conjunction, switching power output through a push rod motor. It can achieve rapid switching between elevation angle and height adjustment without an additional power source, making operation efficient and convenient. The directional spraying of the spray head replaces the traditional large-area flooding by water trucks, concentrating water volume and increasing utilization rate. While reducing water waste, it improves dust adsorption efficiency, ensures stable equipment operation, avoids spray head clogging problems, guarantees continuous dust suppression operations, and effectively improves dust suppression efficiency in construction scenarios; 3. This invention features an installation slot on the base, allowing for flexible fixing at any location within the construction area. It is adaptable to various operational scenarios in road and bridge construction, such as drilling, cutting, and material handling. For high-altitude work areas, the height adjustment mechanism raises the spray head to a specified height, while the elevation angle adjustment ensures precise targeting of dust sources. The lateral rotation function adapts to large construction areas, solving the problem of poor adaptability of traditional devices and meeting diverse dust suppression needs in complex construction environments. In summary, this equipment integrates elevation angle, height, and lateral rotation adjustments, achieving all-around dust suppression without blind spots through gear and bevel gear transmission structures, covering multiple areas including high-altitude bridges and road surfaces. Furthermore, thanks to the drive and switching adjustment mechanism, adjustment modes can be quickly switched without additional power, making operation convenient. Directional spraying replaces flood irrigation, resulting in high water resource utilization, stable operation, and anti-clogging. The flexible base allows for fixing in various construction scenarios such as drilling and cutting, effectively solving the problems of narrow coverage, poor adaptability, and water waste associated with traditional devices, significantly improving dust suppression efficiency and practicality. Attached Figure Description

[0015] Figure 1 is a first top-view three-dimensional structural diagram of the overall dust suppression spraying device for road and bridge construction proposed in this invention; Figure 2 is a second top-view three-dimensional structural diagram of the overall dust suppression spraying device for road and bridge construction proposed in this invention; Figure 3 is a top-view three-dimensional structural diagram of the elevation angle adjustment mechanism and the height adjustment mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 4 is a partial cross-sectional top-view three-dimensional structural diagram of the threaded sleeve and the lifting pipe of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 5 is a bottom-view three-dimensional structural diagram of the rotation angle adjustment mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 6 is a top-view three-dimensional structural diagram of the height adjustment mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 7 is a bottom-view three-dimensional structural diagram of the switching adjustment mechanism and drive mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 8 is a top-view three-dimensional structural diagram of the switching adjustment mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 9 is a bottom-view three-dimensional structural diagram of a portion of the switching adjustment mechanism of the dust suppression spraying device for road and bridge construction proposed in this invention; Figure 10 is a top-view three-dimensional structural diagram of the limiting slide and limiting block of the dust suppression spraying device for road and bridge construction proposed in this invention.

[0016] In the diagram: 1. Base; 2. Body; 3. Elevation adjustment mechanism; 301. Second fixing plate; 302. Linkage sleeve; 303. Linkage rod; 304. Second gear; 305. Rotating shaft; 306. Different gear; 307. Linkage frame; 308. Limiting block; 309. Limiting groove; 4. Height adjustment mechanism; 401. Threaded sleeve; 402. Lifting tube; 403. Fixing frame; 404. Guide block; 405. Guide rod; 406. Gear ring; 407. Transmission rod; 408. First gear 409. Wheel; 5. First fixed plate; 6. Rotation angle adjustment mechanism; 701. First motor; 802. Connecting rod; 9. First bevel gear; 1004. Second bevel gear; 11. Switching adjustment mechanism; 12. Push rod motor; 13. Push plate; 14. Moving sleeve; 15. Third gear; 16. Fourth gear; 17. First driven gear; 18. Second driven gear; 19. Drive mechanism; 201. Second motor; 202. Gear post; 31. Spray head; 42. Water inlet pipe. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] Example, referring to Figures 1-10: A dust suppression spraying device for road and bridge construction includes a base 1, a body 2 rotating on the base 1 and a spray head 8, and also includes an elevation angle adjustment mechanism 3, a height adjustment mechanism 4, a rotation angle adjustment mechanism 5, a switching adjustment mechanism 6 and a drive mechanism 7.

[0020] In this invention, the height adjustment mechanism 4 includes a first fixing plate 409 fixedly connected to the inside of the body 2. A threaded sleeve 401 is rotatably connected to one side of the top of the first fixing plate 409. A lifting tube 402 is threadedly connected to the outside of the threaded sleeve 401. A fixing bracket 403 is fixedly connected to the top of the lifting tube 402. A guide block 404 is fixedly connected to one side of the lifting tube 402. A guide rod 405 is fixedly connected to the inside of the body 2. The guide rod 405 is movably sleeved inside the guide block 404. The first fixing plate 409... A transmission rod 407 is rotatably connected to one side of 09. A first gear 408 is fixedly connected to the top of the transmission rod 407. A gear ring 406 is fixedly connected to the lower part of the threaded sleeve 401 corresponding to the first gear 408. One side of the gear ring 406 meshes with the first gear 408 for transmission. When the first gear 408 rotates and meshes with the gear ring 406, it drives the threaded sleeve 401 to rotate. The rotation of the threaded sleeve 401 drives the lifting tube 402 to move up and down along the guide rod 405 through the guide block 404.

[0021] In this invention, the elevation adjustment mechanism 3 includes a linkage sleeve 302 rotatably connected to the first fixed plate 409. A linkage rod 303 is movably sleeved inside the linkage sleeve 302. One end of the linkage rod 303 movably passes through the top of the lifting tube 402. A second gear 304 is fixedly connected to the top of the linkage rod 303. A rotating shaft 305 is rotatably connected to the fixed frame 403. A different gear 306 is fixedly connected to the rotating shaft 305 at a position corresponding to the second gear 304. One side of the different gear 306 meshes with the second gear 304 for transmission. The two ends of the rotating shaft 305 are fixedly connected to the same linkage frame 307. A spray head 8 is fixedly connected to one side of the linkage frame 307. A second fixed plate 301 is fixedly connected inside the body 2. The second fixed plate 301 corresponds to the threaded sleeve 401. A movable hole is provided, and a threaded sleeve 401 is movably fitted inside the movable hole. The bottom end of the guide rod 405 is fixedly connected to the top of the second fixed plate 301. A limit block 308 is fixedly connected to the bottom of the connecting rod 303. Limit grooves 309 are provided on both sides of the connecting sleeve 302 corresponding to the limit blocks 308. The limit blocks 308 are movably fitted inside the limit grooves 309. The rotation of the connecting sleeve 302 drives the connecting rod 303 to rotate synchronously through the limit blocks 308, and at the same time drives the second gear 304 to rotate. The rotation of the second gear 304 meshes with the opposite gear 306, and at the same time drives the rotating shaft 305 to rotate synchronously. When the rotation of the rotating shaft 305 drives the connecting frame 307 to swing synchronously, it drives the spray head 8 to adjust the elevation angle.

[0022] In this invention, the rotation angle adjustment mechanism 5 includes a first motor 501 fixedly connected to the inside of the base 1. The output shaft of the first motor 501 is fixedly connected to a first bevel gear 503. A connecting rod 502 is rotatably connected inside the base 1. A second bevel gear 504 is fixedly connected to the connecting rod 502 at a position corresponding to the first bevel gear 503. One side of the second bevel gear 504 meshes with the first bevel gear 503 for transmission. The top end of the connecting rod 502 passes through the bottom of the machine body 2 and is fixedly connected to the bottom of the first fixing plate 409. When the first motor 501 is started, it drives the first bevel gear 503 to rotate and meshes with the second bevel gear 504 to rotate. The rotation of the second bevel gear 504 drives the connecting rod 502 to rotate synchronously. The rotation of the connecting rod 502 simultaneously drives the machine body 2 to rotate, thereby adjusting the lateral angle of the equipment.

[0023] In this invention, the switching and adjusting mechanism 6 includes a push rod motor 601 fixedly connected to the inside of the body 2. A push plate 602 is fixedly connected to the output end of the push rod motor 601. The push plate 602 has a mounting hole, and a movable sleeve 603 is rotatably connected inside the mounting hole. A third gear 604 is fixedly connected to the top of the movable sleeve 603, and a fourth gear 605 is fixedly connected to the bottom end of the movable sleeve 603. The movable sleeve 603 is movably sleeved outside the connecting rod 502. It also includes a first driven gear 606 fixedly connected to the connecting sleeve 302. One side of the first driven gear 606 indirectly meshes with the third gear 604. A second driven gear 607 is fixedly connected to the bottom end of the transmission rod 407. One side of the driven gear 607 is indirectly engaged with the fourth gear 605. When height adjustment is required, the push rod motor 601 is activated, driving the push plate 602 to move downward, thereby driving the moving sleeve 603 to move along the connecting rod 502. This causes the third gear 604 to move away from and separate from the first driven gear 606, while simultaneously engaging with the second driven gear 607. When elevation adjustment is required, the push rod motor 601 is activated, driving the push plate 602 to move upward, causing the third gear 604 to engage with the first driven gear 606, thereby separating from the second driven gear 607. While the push plate 602 moves, the fourth gear 605 always moves along the gear post 702.

[0024] In this invention, the drive mechanism 7 includes a second motor 701 fixedly connected to the interior of the body 2. The output shaft of the second motor 701 is fixedly connected to a gear column 702. One side of the gear column 702 is slidably meshed with a fourth gear 605 for transmission. When the second motor 701 is started, it drives the gear column 702 to rotate, and at the same time drives the fourth gear 605 to rotate. The rotation of the fourth gear 605 drives the movable sleeve 603 to rotate, and at the same time drives the third gear 604 and the fourth gear 605 to rotate synchronously.

[0025] In this invention, mounting grooves are provided on both sides of the base 1, and a water inlet pipe 9 is fixedly connected to one end of the spray head 8. The other end of the water inlet pipe 9 is connected to an external spray water tank. The base 1 is fixedly installed at a specified position through the mounting grooves.

[0026] Working principle and usage: 1. Equipment initialization and installation: The device is fixed in the designated position in the road and bridge construction area through the installation slots on both sides of the base 1 to ensure the stability of the equipment during operation.

[0027] Connect the water inlet pipe 9, which is connected to one end of the spray head 8, to the external spray water tank to complete the water supply link and provide a water source guarantee for the dust suppression spraying operation.

[0028] II. Power Output and Function Switching Control (Drive Mechanism + Switching Adjustment Mechanism); Drive Mechanism 7 provides continuous power for elevation angle adjustment and height adjustment. Switching adjustment mechanism 6 realizes precise switching between the two functions according to the operation requirements. The core collaborative logic is as follows: Power output start: Start the second motor 701, and its output shaft drives the gear column 702 to rotate at a constant speed. Since the gear column 702 and the fourth gear 605 at the bottom of the moving sleeve 603 maintain a sliding meshing state, the rotation of the gear column 702 will synchronously drive the fourth gear 605 to rotate, thereby driving the moving sleeve 603 and the third gear 604 at the top to rotate together, completing the power transmission.

[0029] Function switching execution: The function switching is controlled by the extension and retraction of the push rod motor 601, which is divided into two working conditions: Height adjustment mode: The push rod motor 601 starts and pushes the push plate 602 to move downward, which drives the moving sleeve 603 to move vertically downward along the connecting rod 502. At this time, the third gear 604 separates from the first driven gear 606 of the elevation adjustment mechanism 3, and the fourth gear 605 meshes with the second driven gear 607 of the height adjustment mechanism 4. The power is directed to the height adjustment mechanism.

[0030] Elevation adjustment mode: The push rod motor 601 starts in reverse and pulls the push plate 602 to move upward, which drives the moving sleeve 603 to move vertically upward along the connecting rod 502. At this time, the fourth gear 605 separates from the second driven gear 607, and the third gear 604 meshes with the first driven gear 606. The power is guided to the elevation adjustment mechanism.

[0031] III. Core Adjustment Function Implementation (I) Height Adjustment (Height Adjustment Mechanism); When the device is in height adjustment mode, power is transmitted to the height adjustment mechanism 4 through the switching adjustment mechanism to realize the lifting and lowering adjustment of the spray head 8: Power transmission: The fourth gear 605 meshes with the second driven gear 607 and rotates, driving the transmission rod 407 to rotate synchronously, thereby driving the first gear 408 at the top of the transmission rod 407 to rotate.

[0032] Lifting transmission: The first gear 408 meshes with the gear ring 406 below the threaded sleeve 401, driving the threaded sleeve 401 to rotate around its own axis. Since the threaded sleeve 401 and the lifting tube 402 are threadedly connected, and the lifting tube 402 is sleeved on the guide rod 405 fixed in the machine body through the guide block 404 on one side, the rotational motion of the threaded sleeve 401 is converted into the vertical lifting motion of the lifting tube 402 along the guide rod 405.

[0033] Height synchronization: The fixed frame 403 at the top of the lifting pipe 402 rises and falls synchronously with the lifting pipe, eventually driving the spray head 8 fixed on the linkage frame 307 to complete the height adjustment, adapting to the dust suppression needs of different working heights.

[0034] (II) Elevation Angle Adjustment (Elevation Angle Adjustment Mechanism) When the device is in elevation angle adjustment mode, the power is transmitted to the elevation angle adjustment mechanism 3 through the switching adjustment mechanism to realize the spray angle adjustment of the spray head 8: Power transmission: The third gear 604 meshes with the first driven gear 606 and rotates, driving the connecting sleeve 302 to rotate around its own axis.

[0035] Linkage transmission: The linkage rod 303 inside the linkage sleeve 302 cooperates with the limiting slide groove 309 of the linkage sleeve 302 through the limiting block 308 at the bottom. The rotation of the linkage sleeve 302 will drive the linkage rod 303 to rotate synchronously through the limiting block 308 (the linkage rod can slide along the axis of the linkage sleeve without affecting the lifting of the lifting pipe).

[0036] Angle conversion: The second gear 304 at the top of the linkage 303 meshes with the different gear 306 on the rotating shaft 305 on the fixed frame 403, driving the rotating shaft 305 to rotate. The linkage frames 307 at both ends of the rotating shaft 305 swing synchronously with the rotating shaft, thereby driving the spray head 8 fixed on the linkage frame to complete the elevation angle adjustment and widen the longitudinal spray coverage range.

[0037] (III) Lateral rotation adjustment (rotation angle adjustment mechanism) The rotation angle adjustment mechanism 5 realizes the overall lateral angle adjustment of the machine body 2 and the spray head 8, expanding the horizontal dust suppression coverage: Power start: Start the first motor 501, and its output shaft drives the first bevel gear 503 to rotate.

[0038] Bevel gear transmission: The first bevel gear 503 meshes with the second bevel gear 504 on the connecting rod 502, driving the connecting rod 502 to rotate.

[0039] Overall rotation: The top of the connecting rod 502 is fixedly connected to the first fixed plate 409, and the body 2 is rotatably connected to the base 1. The rotation of the connecting rod 502 will drive the body 2 and all internal adjustment mechanisms and spray heads 8 to rotate around the axis of the connecting rod, so as to achieve 360° lateral angle adjustment and ensure that the construction area is covered without dead angles.

[0040] IV. Dust Suppression Spraying Operation: After the height, elevation angle, and lateral angle of the spray head 8 are adjusted to the target position, the external spray water tank supplies water to the spray head 8 through the water inlet pipe 9. The spray head atomizes the water and sprays it onto the construction area to adsorb dust particles in the air and achieve the dust suppression effect. During the operation, the height, angle, and rotation status of the spray head can be adjusted in real time by controlling the start and stop of each motor and switching the adjustment mechanism according to changes in dust concentration and construction range, so as to ensure that the dust suppression efficiency is compatible with construction safety.

[0041] V. Equipment shutdown and reset; After the dust suppression operation is completed, turn off the external water supply and the power supply of each motor, reset the switching adjustment mechanism 6 through the push rod motor 601, control the height adjustment mechanism 4 to lower the spray head 8 to the lowest position, and rotate the angle adjustment mechanism 5 to turn the machine body 2 back to the initial direction for easy equipment storage and next use.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dust suppression spraying device for road and bridge construction, comprising a base (1), a body (2) rotating on the base (1), and spray heads (8), characterized in that, Also includes: An elevation angle adjustment mechanism (3), located above the body (2), is used to adjust the elevation angle of the spray head (8); a height adjustment mechanism (4), located inside the body (2), is used to adjust the height of the spray head (8); a rotation angle adjustment mechanism (5), located inside the base (1), is used to adjust the overall lateral angle of the body (2); a switching adjustment mechanism (6), located inside the body (2), is used to switch the power output of the elevation angle adjustment mechanism (3) and the height adjustment mechanism (4); and a drive mechanism (7), located inside the body (2), is used to output power to the elevation angle adjustment mechanism (3) and the height adjustment mechanism (4).

2. The dust suppression spraying device for road and bridge construction according to claim 1, characterized in that, The height adjustment mechanism (4) includes a first fixed plate (409) fixedly connected to the inside of the body (2). A threaded sleeve (401) is rotatably connected to one side of the top of the first fixed plate (409). A lifting tube (402) is threadedly connected to the outside of the threaded sleeve (401). A fixed frame (403) is fixedly connected to the top of the lifting tube (402). A guide block (404) is fixedly connected to one side of the lifting tube (402). A guide rod (405) is fixedly connected to the inside of the body (2). The guide rod (405) is movably sleeved inside the guide block (404).

3. A dust suppression spraying device for road and bridge construction according to claim 2, characterized in that, A transmission rod (407) is rotatably connected to one side of the first fixed plate (409). A first gear (408) is fixedly connected to the top of the transmission rod (407). A gear ring (406) is fixedly connected to the bottom of the threaded sleeve (401) corresponding to the first gear (408). One side of the gear ring (406) meshes with the first gear (408) for transmission.

4. A dust suppression spraying device for road and bridge construction according to claim 2, characterized in that, The elevation adjustment mechanism (3) includes a linkage sleeve (302) rotatably connected to the first fixed plate (409). A linkage rod (303) is movably fitted inside the linkage sleeve (302). One end of the linkage rod (303) movably passes through the top of the lifting tube (402). A second gear (304) is fixedly connected to the top of the linkage rod (303). A rotating shaft (305) is rotatably connected to the fixed frame (403). A different gear (306) is fixedly connected to the rotating shaft (305) at a position corresponding to the second gear (304). One side of the wheel (306) meshes with the second gear (304) for transmission. Both ends of the shaft (305) are fixedly connected to the same linkage frame (307). The spray head (8) is fixedly connected to one side of the linkage frame (307). The inside of the body (2) is fixedly connected to a second fixing plate (301). The second fixing plate (301) has a movable hole corresponding to the threaded sleeve (401). The threaded sleeve (401) is movably fitted inside the movable hole. The bottom end of the guide rod (405) is fixedly connected to the top of the second fixing plate (301).

5. A dust suppression spraying device for road and bridge construction according to claim 1, characterized in that, The rotation angle adjustment mechanism (5) includes a first motor (501) fixedly connected to the inside of the base (1). The output shaft of the first motor (501) is fixedly connected to a first bevel gear (503). A connecting rod (502) is rotatably connected inside the base (1). A second bevel gear (504) is fixedly connected to the connecting rod (502) at the position corresponding to the first bevel gear (503). One side of the second bevel gear (504) meshes with the first bevel gear (503) for transmission. The top end of the connecting rod (502) penetrates the bottom of the body (2) and is fixedly connected to the bottom of the first fixing plate (409).

6. A dust suppression spraying device for road and bridge construction according to claim 1, characterized in that, The switching adjustment mechanism (6) includes a push rod motor (601) fixedly connected to the inside of the body (2). The output end of the push rod motor (601) is fixedly connected to a push plate (602). The push plate (602) has an installation hole. A movable sleeve (603) is rotatably connected inside the installation hole. A third gear (604) is fixedly connected to the top of the movable sleeve (603). A fourth gear (605) is fixedly connected to the bottom of the movable sleeve (603). The movable sleeve (603) is movably sleeved on the outside of the connecting rod (502).

7. A dust suppression spraying device for road and bridge construction according to claim 3, characterized in that, The switching adjustment mechanism (6) further includes a first driven gear (606) fixedly connected to the linkage sleeve (302), one side of the first driven gear (606) is indirectly meshed with the third gear (604), and the bottom end of the transmission rod (407) is fixedly connected to a second driven gear (607), one side of the second driven gear (607) is indirectly meshed with the fourth gear (605).

8. A dust suppression spraying device for road and bridge construction according to claim 1, characterized in that, The drive mechanism (7) includes a second motor (701) fixedly connected to the interior of the body (2). The output shaft of the second motor (701) is fixedly connected to a gear column (702). One side of the gear column (702) is slidably meshed with a fourth gear (605) for transmission.

9. A dust suppression spraying device for road and bridge construction according to claim 4, characterized in that, The bottom of the linkage rod (303) is fixedly connected to a limiting block (308), and the two sides of the linkage sleeve (302) are provided with limiting grooves (309) corresponding to the limiting block (308). The limiting block (308) is movably sleeved inside the limiting groove (309).

10. A dust suppression spraying device for road and bridge construction according to claim 1, characterized in that, The base (1) has mounting slots on both sides, and one end of the spray head (8) is fixedly connected to a water inlet pipe (9), and the other end of the water inlet pipe (9) is connected to an external spray water tank.

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