Bridge construction pavement pre-cleaning device with adjusting function

Abstract

The utility model provides a bridge construction pavement pre-cleaning device with an adjusting function, and solves the problems that the cleaning range of the cleaning device is limited, and the cleaning range is inconvenient to flexibly adjust according to bridge floors with different widths, so that a part of blank areas need to be additionally cleaned or repeatedly cleaned, and the cleaning efficiency is low. And the cleaning effect and the cleaning efficiency are influenced. By changing the length of the telescopic rod and increasing or reducing the distance between the brush and the hinged end of the telescopic rod, when the driving mechanism drives the telescopic rod to rotate left and right in a reciprocating mode, the cleaning range of the brush can be increased or reduced, so that the cleaning range can be flexibly adjusted according to bridge floors with different widths, and the cleaning efficiency is improved; the distance between the left driving mechanism, the right driving mechanism, the telescopic rod and the brushes is changed through the adjusting device, and the situation that part of the area between the two brushes cannot be cleaned or part of the area between the two brushes is repeatedly cleaned can be avoided.

Description

Technical Field

[0001] The utility model relates to the field of cleaning devices, in particular to a bridge construction road surface pre-cleaning device with an adjustment function. Background Art

[0002] Road bridges are generally composed of several parts, such as roadbed, pavement, bridge, tunnel engineering and traffic engineering. With the vigorous development of my country's transportation industry, the number of high-grade highways, mainly expressways and first-class highways, has increased year by year. my country's highway industry has begun to enter a new stage with the construction of high-grade highways as the focus. When the bridge deck needs to be paved, there are often sand, gravel, dust and other debris left over from the construction. If it is not cleaned up, it will have a great impact on the paving quality. In addition, some debris will adhere to the ground due to rain or vehicle pressure, which is not easy to clean.

[0003] In the prior art, there is a utility model patent with patent number 202321703724.3, which discloses a utility model patent for a road surface pre-cleaning device for road and bridge construction, including a water tank, a U-shaped plate at the front end of the water tank, a liftable rectangular frame inside the U-shaped plate, a moving component inside the rectangular frame, and two symmetrical L-shaped plates. The utility model cleans up dust and debris attached to the ground by reciprocating and synchronous motion of bristles on both sides. However, the cleaning range of the cleaning device is limited, and it is not convenient to flexibly adjust the cleaning range according to different widths of bridge decks, resulting in some blank areas requiring additional cleaning or repeated cleaning, affecting the cleaning effect and cleaning efficiency. Utility Model Content

[0004] In order to solve the problem that the cleaning range of the cleaning device in the background technology is limited, it is not convenient to flexibly adjust the cleaning range according to the bridge deck of different widths, resulting in the need for additional cleaning or repeated cleaning of some blank areas, affecting the cleaning effect and cleaning efficiency, the utility model proposes a bridge construction pavement pre-cleaning device with an adjustment function.

[0005] The technical solution of the utility model is: a bridge construction road surface pre-cleaning device with an adjustment function, comprising a left and right transparent main transmission box arranged in front of a vehicle, the rear side of the main transmission box is hinged with two mounting rods, and one end of the mounting rod away from the main transmission box is fixedly arranged at the front end of the vehicle;

[0006] The main transmission box is provided with an adjustment device, and both left and right ends of the adjustment device are provided with a secondary transmission box with a lower opening structure, and the adjustment device is used to adjust the distance between the main transmission box and the secondary transmission box;

[0007] A telescopic rod capable of rotating left and right is hinged on the top of the secondary transmission box, a driving mechanism is provided on the secondary transmission box, the telescopic rod is provided on the driving mechanism, and the driving mechanism is used to drive the telescopic rod to rotate back and forth left and right;

[0008] A support is fixedly provided at one end of the telescopic rod away from the secondary transmission box, a driving motor is fixedly provided in the support, an output shaft of the driving motor passes through the support and is fixedly provided with a brush, the brush is tilted from top to bottom and from back to front, the brush on the left rotates clockwise, and the brush on the right rotates counterclockwise.

[0009] Preferably, two shaft seats spaced apart from each other are fixedly provided in the main transmission box, the adjustment device comprises a bidirectional screw rotatably passed through the shaft seat, both ends of the bidirectional screw are threadedly sleeved with a first threaded sleeve, and the secondary transmission box is fixedly provided at one end of the first threaded sleeve away from the bidirectional screw;

[0010] A first guide rod extending to the left is fixedly provided on the left side of the secondary transmission box located on the right, a first guide cylinder is fixedly provided in the main transmission box, and the first guide rod is slidably inserted into the first guide cylinder; a second guide rod extending to the right is fixedly provided on the right side of the secondary transmission box located on the left, a second guide cylinder is fixedly provided in the main transmission box, and the second guide rod is slidably inserted into the second guide cylinder, and the first guide cylinder, the first guide rod and the second guide cylinder, the second guide rod are arranged at intervals in front and back;

[0011] A driving device is arranged on the main transmission box, and the driving device is used for driving the bidirectional screw to rotate.

[0012] Preferably, the driving device includes a first servo motor fixedly arranged at the bottom of the main transmission box, the output shaft of the first servo motor penetrates into the main transmission box and is fixedly provided with a worm, the middle fixed sleeve of the bidirectional screw is provided with a worm wheel, the worm wheel is located between the two shaft seats, and the worm wheel is threadedly connected to the worm.

[0013] Preferably, the driving mechanism includes a second servo motor fixed in the secondary transmission box, the output shaft of the second servo motor passes through the secondary transmission box and is fixed with an active rod, the end of the active rod away from the output shaft of the second servo motor is hinged with a driven rod with adjustable length, and the end of the driven rod away from the active rod is hinged on the telescopic rod.

[0014] Preferably, the telescopic rod includes a main pipe and a rod body slidably inserted into the main pipe, the support is fixedly arranged at the front end of the rod body, the main pipe is provided with a plurality of first through holes which are arranged at intervals along its length direction and are transparent up and down, the rod body is provided with a plurality of second through holes which are arranged at intervals along its length direction and are transparent up and down, the second through holes can correspond to any one of the first through holes up and down, and bolts are inserted into the second through holes and the corresponding first through holes up and down.

[0015] Preferably, the length-adjustable driven rod includes a second threaded sleeve hinged at one end of the active rod and a screw threaded through the second threaded sleeve. A plurality of hinge shafts spaced along the length direction are fixedly provided on the main pipe. One end of the screw rod passes through the second threaded sleeve and is hinged on one of the hinge shafts.

[0016] Preferably, the vehicle is provided with a water tank, a soft water pipe is clamped on one side of the telescopic rod, the rear end of the soft water pipe is connected to the water tank, the front end of the soft water pipe passes through the support and is fixedly connected and connected to an elastic metal hose, the front end of the elastic metal hose passes through the support and extends to the front of the brush.

[0017] Preferably, a support rod extending downward is fixedly provided on opposite sides of the two secondary transmission boxes, and a roller is rotatably provided on the bottom end of the support rod.

[0018] The advantages of the utility model are: the driving mechanism drives the telescopic rod to rotate back and forth, thereby driving the brush at the front end of the telescopic rod to swing back and forth, so that a larger area can be cleaned, thereby improving the cleaning efficiency; and the brush is tilted from top to bottom and from back to front, so that the front end of the brush can better fit the bridge deck for cleaning, while the brush at the rear is separated from the bridge deck, the brush on the left side rotates clockwise, and the brush on the right side rotates counterclockwise, so that the brush can concentrate dust and debris in the middle of the bridge deck while cleaning the bridge deck, which is convenient for subsequent centralized cleaning.

[0019] By changing the length of the telescopic rod and increasing or decreasing the distance between the brush and the hinged end of the telescopic rod, the cleaning range of the brush can be increased or decreased when the driving mechanism drives the telescopic rod to rotate back and forth left and right, so as to flexibly adjust the cleaning range according to bridge decks of different widths and improve the cleaning efficiency.

[0020] By adjusting the device, the distance between the left and right driving mechanisms, the telescopic rod and the brush is changed to avoid that the cleaning range of the brush is reduced after the distance between the brush and the hinged end of the telescopic rod is reduced, resulting in partial area between the two brushes not being cleaned; and that the cleaning range of the brush is increased after the distance between the brush and the hinged end of the telescopic rod is increased, resulting in repeated cleaning of partial area between the two brushes. At the same time, increasing the distance between the left and right brushes can further increase the cleaning range of the brush to suit a wider bridge deck width. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 This is a structural sectional view of the main transmission box of the utility model;

[0025] Figure 4 For this utility model Figure 1 A magnified view of the structure at center;

[0026] Figure 5 For this utility model Figure 1 Enlarged view of the structure at point B in the middle.

[0027] In the figure: 1. main transmission box; 2. adjustment device; 21. shaft seat; 22. bidirectional screw; 23. first threaded sleeve; 24. first guide cylinder; 25. second guide cylinder; 26. first guide rod; 27. second guide rod; 281. first servo motor; 282. worm; 283. worm wheel; 3. secondary transmission box; 4. telescopic rod; 41. main pipe; 42. rod body; 43. first through hole; 44. second through hole; 45. bolt; 5. driving mechanism; 51. second servo motor; 52. active rod; 531. second threaded sleeve; 532. screw; 533. hinge shaft; 6. support; 7. driving motor; 8. brush; 9. elastic metal hose; 10. soft water pipe; 11. mounting rod; 12. support rod; 13. roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1: A bridge construction road surface pre-cleaning device with an adjustment function, such as Figure 1-5 As shown, it includes a left-right transparent main transmission box 1 arranged in front of the vehicle, and the rear side of the main transmission box 1 is hinged with two mounting rods 11 that can rotate left and right. The end of the mounting rod 11 away from the main transmission box 1 is fixed at the front end of the vehicle, and the mounting rod 11 that can rotate left and right can be adjusted according to the position of the vehicle mounting part.

[0030] An adjusting device 2 is provided on the main transmission box 1, and a secondary transmission box 3 with a lower opening structure is provided at both left and right ends of the adjusting device 2. The adjusting device 2 is used to adjust the distance between the main transmission box 1 and the secondary transmission box 3. Specifically, the adjusting device 2 includes a bidirectional screw 22 rotatably inserted into the shaft seat 21, and both ends of the bidirectional screw 22 are threadedly sleeved with a first threaded sleeve 23, and the secondary transmission box 3 is fixedly arranged at one end of the first threaded sleeve 23 away from the bidirectional screw 22; a first guide rod 26 extending to the left is fixedly arranged on the left side of the secondary transmission box 3 on the right, and a first guide cylinder 24 is fixedly arranged in the main transmission box 1, and the first guide rod 26 is slidably inserted in the first guide cylinder 24; the right side of the secondary transmission box 3 on the left A second guide rod 27 extending to the right is fixedly provided on the side, and a second guide cylinder 25 is fixedly provided in the main transmission box 1, and the second guide rod 27 is slidably inserted into the second guide cylinder 25; the first guide cylinder 24, the first guide rod 26 and the second guide cylinder 25, the second guide rod 27 can guide the secondary transmission box 3 to move in the left and right directions, so as to avoid that when the bidirectional screw 22 rotates, the first threaded sleeve 23 cannot be driven to move to both ends; the first guide cylinder 24, the first guide rod 26 and the second guide cylinder 25, the second guide rod 27 are arranged at intervals in front and back, so that the first guide cylinder 24, the first guide rod 26 and the second guide cylinder 25, the second guide rod 27 can provide a longer guide stroke in a limited space.

[0031] A driving device for driving the bidirectional screw 22 to rotate is provided on the main transmission box 1. Specifically, the driving device includes a first servo motor 281 fixedly arranged at the bottom of the main transmission box 1. The output shaft of the first servo motor 281 penetrates into the main transmission box 1 and is fixedly provided with a worm 282. A worm gear 283 is provided on the middle fixed sleeve of the bidirectional screw 22. The worm gear 283 is located between the two shaft seats 21, and the worm gear 283 is threadedly connected to the worm 282. The first servo motor 281 drives the bidirectional screw 22 to rotate by driving the worm gear 283 and the worm 282, which can not only provide high transmission accuracy and high transmission efficiency, but also the worm gear 283 and the worm 282 are self-locking, which can prevent the bidirectional screw 22 and the first threaded sleeve 23 from sliding during operation.

[0032] A telescopic rod 4 that can rotate left and right is hinged on the top of the secondary transmission box 3. The telescopic rod 4 includes a main pipe 41 and a rod body 42 that is slidably inserted into the main pipe 41. One end of the rod body 42 away from the main pipe 41 passes through the main pipe 41 and is fixed with a support 6. A driving motor 7 is fixed in the support 6. The output shaft of the driving motor 7 passes through the support 6 and is fixed with a brush 8. The brush 8 is tilted from top to bottom and from back to front, so that the front end of the brush 8 can better fit the bridge surface for cleaning. At the same time, the brush 8 at the rear is separated from the bridge surface, the brush 8 on the left side rotates clockwise, and the brush 8 on the right side rotates counterclockwise, so that the brush 8 can clean the bridge surface while cleaning it. It is able to concentrate dust and debris in the middle of the bridge deck, which is convenient for subsequent centralized cleaning; the main pipe 41 is provided with a plurality of first through holes 43 which are arranged at intervals along its length direction and are transparent up and down, and the rod body 42 is provided with a plurality of second through holes 44 which are arranged at intervals along its length direction and are transparent up and down, and the second through holes 44 can correspond to any one of the first through holes 43 up and down, and bolts 45 are penetrated through the second through holes 44 and the first through holes 43 corresponding to each other up and down; by sliding the rod body 42 in the main pipe 41 and fixing the main pipe 41 and the rod body 42 with bolts 45, the length of the telescopic rod 4 can be adjusted, thereby changing the distance between the brush 8 and the hinged end of the telescopic rod 4.

[0033] A telescopic rod 4 capable of rotating left and right is hinged on the top of the secondary transmission box 3. A driving mechanism 5 is provided on the secondary transmission box 3. The telescopic rod 4 is arranged on the driving mechanism 5. The driving mechanism 5 is used to drive the telescopic rod 4 to rotate back and forth left and right. Specifically, the driving mechanism 5 includes a second servo motor 51 fixedly arranged in the secondary transmission box 3. The output shaft of the second servo motor 51 passes through the secondary transmission box 3 and is fixedly provided with an active rod 52. The active rod 52 is hinged at one end away from the output shaft of the second servo motor 51 with a driven rod with adjustable length, and the driven rod is hinged at one end away from the active rod 52 on the telescopic rod 4.

[0034] The second servo motor 51 drives the active rod 52 to rotate, and drives the telescopic rod 4 to rotate back and forth along the hinge through the driven rod, and at the same time drives the brush 8 at the front end of the telescopic rod 4 to swing back and forth, so that a larger area can be cleaned; by changing the length of the telescopic rod 4, the distance between the brush 8 and the hinged end of the telescopic rod 4 is increased or reduced, so that when the driving mechanism 5 drives the telescopic rod 4 to rotate back and forth, the cleaning range of the brush 8 can be increased or reduced to adapt to the width of the bridge deck and improve the cleaning efficiency; after changing the length of the telescopic rod 4 to increase or reduce the distance between the brush 8 and the hinged end of the telescopic rod 4, the first servo motor 281 is driven to rotate through the worm gear 2 83 and the worm 282 drive the bidirectional screw 22 to rotate, and then drive the two first threaded sleeves 23 to move in relative or opposite directions to change the spacing between the left and right driving mechanisms 5, the telescopic rod 4 and the brush 8, to avoid that after reducing the distance between the brush 8 and the hinged end of the telescopic rod 4, the cleaning range of the brush 8 is reduced, resulting in the partial area between the two brushes 8 not being cleaned, and to avoid that after increasing the distance between the brush 8 and the hinged end of the telescopic rod 4, the cleaning range of the brush 8 is increased, resulting in repeated cleaning of the partial area between the two brushes 8. At the same time, increasing the spacing between the left and right brushes 8 can further increase the cleaning range of the brush 8 to be suitable for a wider bridge deck width.

[0035] The length-adjustable driven rod includes a second threaded sleeve 531 hinged at one end of the active rod 52 and a screw 532 threadedly inserted into the second threaded sleeve 531. A plurality of hinge shafts 533 are fixedly provided on the main pipe 41 and arranged at intervals along its length direction. One end of the screw 532 passes through the second threaded sleeve 531 and is hinged on one of the hinge shafts 533. By changing the length of the driven rod, or hinged one end of the driven rod away from the active rod 52 on different hinge shafts 533, the angular rotation range of the telescopic rod 4 can be increased or decreased, thereby changing the increase or decrease of the cleaning range of the brush 8 to be suitable for bridge decks of different widths.

[0036] The vehicle is provided with a water tank, and a soft water pipe 10 is clamped on one side of the telescopic rod 4. The rear end of the soft water pipe 10 is connected to the water tank, and the front end of the soft water pipe 10 passes through the support 6 and is fixedly connected and connected with an elastic metal hose 9. The front end of the elastic metal hose 9 passes through the support 6 and extends to the front of the brush 8 and faces the ground. It can spray water on the uncleaned ground in front of the brush 8, and can enhance the brush 8's ability to clean the bridge surface.

[0037] A downwardly extending support rod 12 is fixedly provided on the opposite side of the two secondary transmission boxes 3, and a roller 13 is rotatably provided at the bottom end of the support rod 12. The support rod 12 and the roller 13 can support the secondary transmission box 3 and the driving mechanism 5, telescopic rod 4 and brush 8 arranged on the secondary transmission box 3 to prevent deformation.

[0038] Working principle: When in use, turn on the driving motor 7 to drive the brush 8 to rotate, and then turn on the second servo motor 51. The second servo motor 51 drives the active rod 52 to rotate, and drives the telescopic rod 4 to rotate back and forth left and right along the hinge through the driven rod, while driving the brush 8 at the front end of the telescopic rod 4 to swing back and forth left and right to clean the area in the front range. At the same time, the brush 8 on the left side, which is tilted from top to bottom and from back to front, rotates clockwise, and the brush 8 on the right side rotates counterclockwise, so that the brush 8 can concentrate dust and debris in the middle of the bridge deck while cleaning the bridge deck, which is convenient for subsequent centralized cleaning.

[0039] When the width of the bridge deck is not suitable for the cleaning range, the length of the telescopic rod 4 can be adjusted by sliding the rod body 42 in the main pipe 41 and fixing the main pipe 41 and the rod body 42 through the bolt 45, thereby increasing or reducing the distance between the brush 8 and the hinged end of the telescopic rod 4, and increasing or reducing the cleaning range of the brush 8. At the same time, by driving the first servo motor 281, the bidirectional screw 22 is driven to rotate through the worm gear 283 and the worm 282, thereby driving the two first threaded sleeves 23 to move in relative or opposite directions to change the spacing between the left and right driving mechanisms 5, the telescopic rod 4 and the brush 8, so as to avoid reducing the distance between the brush 8 and the hinged end of the telescopic rod 4, resulting in the cleaning range of the brush 8 being reduced, resulting in the partial area between the two brushes 8 not being cleaned, and avoiding increasing the distance between the brush 8 and the hinged end of the telescopic rod 4, resulting in repeated cleaning of the partial area between the two brushes 8. At the same time, increasing the spacing between the left and right brushes 8 can further increase the cleaning range of the brush 8 to be suitable for a wider bridge deck width.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A bridge construction road surface pre-cleaning device with an adjustment function, characterized in that: It comprises a left-right transparent main transmission box (1) arranged at the front of the vehicle, the rear side of the main transmission box (1) is hinged with two mounting rods (11), and one end of the mounting rod (11) away from the main transmission box (1) is fixedly arranged at the front end of the vehicle; An adjusting device (2) is provided on the main transmission box (1), and secondary transmission boxes (3) with lower opening structures are provided at both left and right ends of the adjusting device (2), and the adjusting device (2) is used to adjust the distance between the main transmission box (1) and the secondary transmission box (3); A telescopic rod (4) capable of rotating left and right is hingedly connected to the top of the secondary transmission box (3); a driving mechanism (5) is provided on the secondary transmission box (3); the telescopic rod (4) is provided on the driving mechanism (5); and the driving mechanism (5) is used to drive the telescopic rod (4) to rotate back and forth left and right; A support (6) is fixedly provided at one end of the telescopic rod (4) away from the secondary transmission box (3), a driving motor (7) is fixedly provided in the support (6), an output shaft of the driving motor (7) passes through the support (6) and is fixedly provided with a brush (8), the brush (8) being arranged obliquely from top to bottom and from back to front, the brush (8) located on the left side rotating clockwise, and the brush (8) located on the right side rotating counterclockwise.

2. A bridge construction pavement pre-cleaning device with an adjustment function according to claim 1, characterized in that: Two shaft seats (21) are fixedly arranged in the main transmission box (1) and are spaced apart from each other. The adjustment device (2) comprises a bidirectional screw (22) which is rotatably inserted into the shaft seat (21). Both ends of the bidirectional screw (22) are threadedly sleeved with a first threaded sleeve (23). The secondary transmission box (3) is fixedly arranged on one end of the first threaded sleeve (23) away from the bidirectional screw (22). A first guide rod (26) extending to the left is fixedly provided on the left side of the secondary transmission box (3) located on the right, a first guide cylinder (24) is fixedly provided in the main transmission box (1), and the first guide rod (26) is slidably inserted into the first guide cylinder (24); a second guide rod (27) extending to the right is fixedly provided on the right side of the secondary transmission box (3) located on the left, a second guide cylinder (25) is fixedly provided in the main transmission box (1), and the second guide rod (27) is slidably inserted into the second guide cylinder (25), and the first guide cylinder (24), the first guide rod (26) and the second guide cylinder (25), the second guide rod (27) are arranged at intervals in front and back; A driving device is provided on the main transmission box (1), and the driving device is used to drive the bidirectional screw (22) to rotate.

3. A bridge construction pavement pre-cleaning device with an adjustment function according to claim 2, characterized in that: The driving device comprises a first servo motor (281) fixedly arranged at the bottom of a main transmission box (1); an output shaft of the first servo motor (281) penetrates into the main transmission box (1) and is fixedly provided with a worm (282); a central fixed sleeve of the bidirectional screw (22) is provided with a worm wheel (283); the worm wheel (283) is located between two shaft seats (21); and the worm wheel (283) is threadedly connected to the worm (282).

4. The bridge construction pavement pre-cleaning device with an adjustment function according to claim 1, characterized in that: The driving mechanism (5) comprises a second servo motor (51) fixedly arranged in the secondary transmission box (3); an output shaft of the second servo motor (51) passes through the secondary transmission box (3) and is fixedly provided with an active rod (52); an end of the active rod (52) away from the output shaft of the second servo motor (51) is hingedly connected to a driven rod with adjustable length; and an end of the driven rod away from the active rod (52) is hingedly connected to the telescopic rod (4).

5. The bridge construction pavement pre-cleaning device with an adjustment function according to claim 1, characterized in that: The telescopic rod (4) comprises a main pipe (41) and a rod body (42) slidably inserted into the main pipe (41); a support (6) is fixedly arranged at the front end of the rod body (42); a plurality of first through holes (43) arranged at intervals along the length direction thereof and transparent from top to bottom are provided on the main pipe (41); a plurality of second through holes (44) arranged at intervals along the length direction thereof and transparent from top to bottom are provided on the rod body (42); the second through holes (44) can correspond to any one of the first through holes (43) in the upper and lower directions; and a bolt (45) is inserted into both the second through holes (44) and the corresponding first through holes (43) in the upper and lower directions.

6. A bridge construction pavement pre-cleaning device with an adjustment function according to claim 4 or 5, characterized in that: The length-adjustable driven rod comprises a second threaded sleeve (531) hinged to one end of the active rod (52) and a screw rod (532) threadedly inserted into the second threaded sleeve (531). The main pipe (41) is fixedly provided with a plurality of hinge shafts (533) spaced apart along the length direction thereof. One end of the screw rod (532) passes through the second threaded sleeve (531) and is hingedly installed on one of the hinge shafts (533).

7. The bridge construction road surface pre-cleaning device with adjustment function according to claim 1, characterized in that: The vehicle is provided with a water tank, a flexible water pipe (10) is clamped on one side of the telescopic rod (4), the rear end of the flexible water pipe (10) is connected to the water tank, the front end of the flexible water pipe (10) passes through the support (6) and is fixedly connected to and connected with an elastic metal hose (9), and the front end of the elastic metal hose (9) passes through the support (6) and extends to the front of the brush (8).

8. The bridge construction road surface pre-cleaning device with adjustment function according to claim 1, characterized in that: A support rod (12) extending downward is fixedly provided on opposite sides of the two secondary transmission boxes (3), and a roller (13) is rotatably provided at the bottom end of the support rod (12).

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