A road surface flatness measuring device

Abstract

The application discloses a kind of road surface flatness measuring devices, including bottom plate, the bottom plate bottom both sides rotationally installed wheel axle, the both sides of wheel axle are installed with walking wheel, and the one end of bottom plate is installed with cleaning mechanism, and detection mechanism is installed on bottom plate, the top of cleaning mechanism is equipped with L-shaped plate, the L-shaped plate is installed on bottom plate by connecting block, and one end of cleaning mechanism is connected with one end of L-shaped plate, and spraying mechanism is installed on one side of cleaning mechanism, bottom plate, the spraying mechanism is connected with cleaning mechanism, water tank is installed on the one end of bottom plate away from cleaning mechanism, the water tank is connected with spraying mechanism, and inlet is installed on the water tank.The ground obstacle can be swept to the both sides of device by cleaning mechanism, and the accuracy of subsequent ground measurement is improved without the obstruction of object, while sweeping, water is sprayed by spraying mechanism, so as to suppress dust generated when cleaning mechanism works, and it is conducive to environmental protection.

Description

Technical Field

[0001] This invention belongs to the field of road surface testing technology, and specifically relates to a road surface smoothness measuring device. Background Technology

[0002] Road surface smoothness refers to the deviation of the longitudinal unevenness of the road surface. Road surface smoothness is an important indicator in road evaluation and road construction acceptance. It is related to driving safety, comfort, the magnitude of impact force on the road surface and its service life, and affects driving speed and safety. Therefore, in order to reduce vibration and impact force, improve driving speed and enhance driving safety, the road surface should maintain a certain degree of smoothness.

[0003] A search revealed a Chinese patent with application number 2024101253716, which discloses a road surface smoothness detection device with obstacle removal function. The device includes a vehicle body, an obstacle removal mechanism mounted on the vehicle body, and a detection mechanism mounted on the vehicle body. The obstacle removal mechanism includes barrier guide plates and sweeping wheels. Multiple barrier guide plates are fixedly installed on the vehicle body, symmetrically arranged on one side of the vehicle body. The barrier guide plates separate and guide large obstacles to the side of the vehicle body. Multiple sweeping wheels are rotatably mounted on the vehicle body, symmetrically arranged on one side of the vehicle body, and positioned between the barrier guide plates. The sweeping wheels sweep small obstacles to the side of the vehicle body. As the detection device moves on the road, it tilts due to the road's inclination. At this time, the water tank... Because the water level in the tank needs to be kept horizontal, the water inside the tank is tilted relative to the tank. The detection wheel remains parallel to the water level in the tank. The detection wheel detects the smoothness of the road surface, and the data generated is collected by a data collector. This ensures that the tilt of the road surface does not affect the smoothness detection of the road surface itself, thus improving the detection quality of the device. However, the following defects still exist: When the obstacle removal mechanism is working, the rotating sweeping wheel sweeps away small obstacles to the sides of the detection device. However, because the baffle is set on the side of the sweeping wheel, the small obstacles swept by the sweeping wheel will collide with the baffle and bounce back, thereby reducing the sweeping effect of the sweeping wheel and affecting the subsequent measurement results. At the same time, because the sweeping wheel is in contact with the ground during operation, it generates a lot of dust, causing environmental pollution. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a road surface smoothness measuring device. The sweeping mechanism can sweep ground obstacles to both sides of the device. The sweeping is unobstructed, which improves the accuracy of subsequent ground measurements. At the same time as sweeping, water is sprayed by a spraying mechanism to suppress the dust generated by the sweeping mechanism during operation, which is beneficial to environmental protection.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A road surface smoothness measuring device includes a base plate, with wheel axles rotatably mounted on both sides of the bottom of the base plate, and driving wheels mounted on both sides of the wheel axles. A sweeping mechanism is mounted on one end of the base plate, and a detection mechanism is mounted on the base plate. An L-shaped plate is provided above the sweeping mechanism, and the L-shaped plate is mounted on the base plate via a connecting block. One end of the sweeping mechanism is connected to one end of the L-shaped plate. A spraying mechanism is mounted on one side of the sweeping mechanism and on the base plate, and the spraying mechanism is connected to the cleaning mechanism. A water tank is mounted on the end of the base plate away from the sweeping mechanism, and the water tank is connected to the spraying mechanism. A water inlet is installed on the water tank.

[0006] The cleaning mechanism includes a housing, a drive motor, and cleaning rollers. The housing is installed below the end of the base plate. A first rotating shaft is rotatably installed inside the housing. The drive motor is installed on the side wall of the housing and connected to the end of the first rotating shaft. A first bevel gear set and a second bevel gear set are respectively installed inside the housing and at both ends of the first rotating shaft. The driving bevel gears in the first and second bevel gear sets are symmetrically installed at both ends of the first rotating shaft inside the housing. There are two cleaning rollers, which are respectively installed on the driven bevel gears in the first and second bevel gear sets. The other end of the cleaning roller is rotatably installed on the inner side wall of the L-shaped plate. Multiple bristles are evenly installed on the circumference and axial direction of the cleaning roller, and the bristles on the two cleaning rollers are staggered.

[0007] The spraying mechanism includes a vertical plate, a cam, a piston cylinder, an inlet pipe, and an outlet pipe. Two vertical plates are symmetrically installed on both sides of a base plate. A second rotating shaft is rotatably mounted between the two vertical plates. The cam is mounted on the second rotating shaft. The piston cylinder is located below the cam and mounted on the base plate. A piston is slidably installed inside the piston cylinder. A piston rod is mounted on the top of the piston. The top of the piston rod extends to the outside of the piston cylinder and is fitted with a movable plate. A first spring is installed between the movable plate and the top of the piston cylinder, and around the piston rod. Under the action of the first spring, the movable plate always abuts against the cam. Multiple [unclear text - possibly a number of components] are evenly installed horizontally and vertically on the inner top wall of the L-shaped plate. Multiple nozzles are connected by pipes located inside an L-shaped plate. The bottom of the piston cylinder is connected to the bottom of the water tank via an inlet pipe, and the piston cylinder is connected to the pipes inside the L-shaped plate via an outlet pipe. Both the inlet and outlet pipes are equipped with one-way valves. The one-way valve on the inlet pipe allows water in the tank to flow towards the piston cylinder, and the one-way valve on the outlet pipe allows water in the piston cylinder to flow towards the L-shaped plate. The end of the first rotating shaft away from the drive motor extends to the outside of the housing and is equipped with a first pulley. The end of the second rotating shaft near the first pulley extends to the outside of the vertical plate and is equipped with a second pulley. The first pulley and the second pulley are connected by a first belt.

[0008] The detection mechanism includes a horizontal plate, a first threaded rod, a movable rod, and a detection ball. The first threaded rod is threadedly installed in the middle of the base plate. The horizontal plate is located below the bottom of the first threaded rod. Guide rods are installed on both sides of the horizontal plate. The horizontal plate is slidably installed on the base plate via the guide rods. A bearing seat is installed in the middle of the upper part of the horizontal plate. The bottom end of the first threaded rod is installed on the bearing seat. Multiple movable rods are evenly installed between the first threaded rod and the guide rods and on the horizontal plate. The movable rods pass through the horizontal plate and the base plate and are slidably connected to the horizontal plate and the base plate. A U-shaped frame is installed at the bottom of the movable rod. The detection ball is rotatably installed in the U-shaped frame. A second spring is sleeved between the U-shaped frame and the horizontal plate and around the movable rod.

[0009] Preferably, a marking mechanism is installed between the water tank and the detection mechanism. The marking mechanism includes a first support frame, a feeding roller, a support platform, a second support frame, and a receiving roller. There are two first support frames, symmetrically installed on both sides of the base plate. The feeding roller is rotatably mounted on the first support frame and is wrapped with foam cotton. The support platform is located above the feeding roller and is installed on the base plate. There are two second support frames, symmetrically installed on both sides of the base plate. The second support frame is located on one side of the support platform and its height is greater than that of the first support frame. The receiving roller is rotatably mounted on the second support frame. One end of the receiving roller extends to the outside of the second support frame and is equipped with a third pulley. A fourth pulley is installed on the wheel axle near the water tank. The fourth pulley is connected to the third pulley via a second belt. The foam cotton on the feeding roller passes over the upper surface of the support platform and is wrapped around the receiving roller. The top of the movable rod is inverted U-shape, and a circular cutter is rotatably mounted on the end of the movable rod away from the U-shaped frame.

[0010] Preferably, a support plate is installed on the side of the water tank near the third pulley, a second threaded rod is installed on the support plate with a transverse thread, a slider is installed at the end of the second threaded rod, a groove is opened on the side wall of the water tank to cooperate with the slider, the slider is slidably installed in the groove, and a tensioning wheel is rotatably installed on the side of the slider away from the water tank.

[0011] Preferably, the support platform is fixed to the base plate by bolts on both sides of the base plate, and a roller is rotatably installed on one side of the support platform.

[0012] Preferably, an observation window is installed on one side of the water tank, and a handrail is installed on the side of the water tank away from the cleaning mechanism.

[0013] Preferably, there are two cams, which are inverted and symmetrically mounted on the second rotating shaft. The number of piston cylinders, water inlet pipes and water outlet pipes corresponds one-to-one with the number of cams.

[0014] The beneficial effects of this invention are: 1) The sweeping mechanism can sweep ground obstacles to both sides of the device. The sweeping is unobstructed, which improves the accuracy of subsequent ground measurements. At the same time, water is sprayed through the spraying mechanism to suppress the dust generated by the sweeping mechanism, which is beneficial to environmental protection.

[0015] 2) There are two cams, which are inverted and symmetrically installed on the second rotating shaft. The number of piston cylinders, water inlet pipes and water outlet pipes corresponds one-to-one with the number of cams. Since the nozzle cannot spray water when the piston moves upward inside the piston cylinder, it will also cause dust to be generated. By setting two cams, which are inverted, when one piston moves upward, the other piston will move downward, so that the nozzle sprays water continuously, which improves the effect of the spraying mechanism.

[0016] 3) A marking mechanism is installed between the water tank and the detection mechanism. When the detection ball contacts the road surface, the circular cutter on the movable rod contacts the foam cotton. When the device moves, the fourth pulley on the wheel axle drives the receiving roller to rotate through the second belt. When the receiving roller rotates, it drives the foam cotton to move. When the road surface is flat, the circular cutter leaves a slight mark on the surface of the foam cotton. When it moves to a low-lying road surface, the movable rod will drive the circular cutter to move downwards, and the circular cutter will cut the surface of the foam cotton to different depths. When it moves to a raised road surface, the movable rod will drive the circular cutter to move upwards, and the circular cutter will not contact the surface of the foam cotton. This allows the smoothness of the road surface to be recorded through the foam cotton.

[0017] 4) A support plate is installed on the side of the water tank near the third pulley. A second threaded rod is installed on the support plate with a transverse thread. A slider is installed at the end of the second threaded rod. A groove is opened on the side wall of the water tank to cooperate with the slider. The slider is slidably installed in the groove. A tensioning wheel is rotatably installed on the side of the slider away from the water tank. The tensioning wheel can realize the tension of the second belt. When the detection mechanism is not working, the tensioning wheel does not need to tension the second belt. At this time, the belt is too loose and cannot make the receiving roller rotate, thus preventing the foam cotton from moving. This avoids the waste of foam cotton and prevents the foam cotton from moving under the action of the receiving roller when the detection mechanism is not working.

[0018] 5) The support platform is fixed to the base plate by bolts on both sides of the base plate. When the feeding roller needs to be replaced, the support platform can be separated from the base plate, which facilitates the installation and disassembly of the feeding roller. A support roller is rotatably installed on one side of the support platform. The support roller avoids the friction between the foam cotton and the end of the support platform, which is beneficial to the movement of the foam cotton.

[0019] 6) An observation window is installed on one side of the water tank, which makes it easy to see the water level inside the tank. A handrail is installed on the side of the water tank away from the cleaning mechanism, which makes it easy to push the device to move. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the structure of a road surface smoothness measuring device according to the present invention.

[0021] Appendix Figure 2 This is a schematic diagram of the road surface smoothness measuring device of the present invention from another perspective.

[0022] Appendix Figure 3 This is a schematic diagram of the cleaning mechanism in a road surface smoothness measuring device of the present invention.

[0023] Appendix Figure 4 This is a schematic diagram of the spraying mechanism in a road surface smoothness measuring device of the present invention.

[0024] Appendix Figure 5 This is a schematic diagram of the internal structure of the piston cylinder in a road surface smoothness measuring device of the present invention.

[0025] Appendix Figure 6 This is a schematic diagram of the internal structure of the L-shaped plate in a road surface smoothness measuring device of the present invention.

[0026] Appendix Figure 7 This is a schematic diagram of the detection mechanism in a road surface smoothness measuring device of the present invention.

[0027] Appendix Figure 8 This is a schematic diagram of the marking mechanism in a road surface smoothness measuring device of the present invention.

[0028] Appendix Figure 9 This is a schematic diagram of the installation of the third and fourth pulleys in a road surface smoothness measuring device of the present invention.

[0029] Appendix Figure 10 This is a schematic diagram of the tensioning wheel structure in a road surface smoothness measuring device of the present invention.

[0030] Appendix Figure 11 This is a schematic diagram of the support platform structure in a road surface smoothness measuring device of the present invention.

[0031] In the diagram: 1. Base plate; 2. Wheels; 3. Water tank; 31. Water inlet; 32. Observation window; 4. Handrail; 5. Sweeping mechanism; 501. Housing; 502. Drive motor; 503. First shaft; 504. First bevel gear set; 505. Second bevel gear set; 506. Sweeping roller; 507. First pulley; 6. Spraying mechanism; 601. Vertical plate; 602. Second shaft; 603. Cam; 604. Piston cylinder; 605. Second pulley; 606. First belt; 607. Water inlet pipe; 608. Water outlet pipe; 609. Piston rod; 610. Piston; 611. Movable plate; 612. First spring; 613. Nozzle; 7. Detection mechanism; 701, horizontal plate; 702, first threaded rod; 703, bearing seat; 704, movable rod; 705, U-shaped frame; 706, detection ball; 707, second spring; 708, guide rod; 709, circular cutter; 8, marking mechanism; 801, first bearing frame; 802, feeding roller; 803, support platform; 804, second bearing frame; 805, receiving roller; 806, foam cotton; 807, third pulley; 808, tensioning wheel; 809, fourth pulley; 810, second belt; 811, slider; 812, support plate; 813, second threaded rod; 814, idler roller; 9, L-shaped plate; 10, bolt; 11, wheel axle. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-11The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] A road surface smoothness measuring device includes a base plate 1. Wheel axles 11 are rotatably mounted on both sides of the bottom of the base plate 1. Walking wheels 2 are mounted on both sides of the wheel axles 11. A sweeping mechanism 5 is mounted on one end of the base plate 1. A detection mechanism 7 is mounted on the base plate 1. An L-shaped plate 9 is provided above the sweeping mechanism 5. The L-shaped plate 9 is mounted on the base plate 1 through a connecting block. One end of the sweeping mechanism 5 is connected to one end of the L-shaped plate 9. A spraying mechanism 6 is mounted on one side of the sweeping mechanism 5 and on the base plate 1. The spraying mechanism 6 is connected to the cleaning mechanism. A water tank 3 is mounted on the end of the base plate 1 away from the sweeping mechanism 5. The water tank 3 is connected to the spraying mechanism 6. A water inlet 31 is mounted on the water tank 3.

[0035] The cleaning mechanism 5 includes a housing 501, a drive motor 502, and cleaning rollers 506. The housing 501 is installed below the end of the base plate 1. A first rotating shaft 503 is rotatably mounted inside the housing 501. The drive motor 502 is mounted on the side wall of the housing 501 and connected to the end of the first rotating shaft 503. A first bevel gear set 504 and a second bevel gear set 505 are respectively installed inside the housing 501 and at both ends of the first rotating shaft 503. The driving bevel gears in the first bevel gear set 504 and the second bevel gear set 505 are symmetrically installed at both ends of the first rotating shaft 503 inside the housing 501. There are two cleaning rollers 506, which are respectively installed on the first bevel gear set 504 and the second bevel gear set 505. On the driven bevel gear in the two bevel gear set 505, the other end of the sweeping roller 506 is rotatably mounted on the inner side wall of the L-shaped plate 9. Multiple bristles are evenly installed on the circumference and axial direction of the sweeping roller 506. The bristles on the two sweeping rollers 506 are staggered, which increases the contact area with the ground and improves the working efficiency of the sweeping mechanism 5. The drive motor 502 drives the first rotating shaft 503 to rotate. The first bevel gear set 504 and the second bevel gear set 505 located on the first rotating shaft 503 rotate accordingly, thereby driving the two sweeping rollers 506 to rotate in opposite directions, sweeping obstacles on the ground to both sides of the device. There are no objects blocking the sweeping, which improves the accuracy of subsequent ground measurements.

[0036] The spraying mechanism 6 includes a vertical plate 601, a cam 603, a piston cylinder 604, a water inlet pipe 607, and a water outlet pipe 608. Two vertical plates 601 are symmetrically installed on both sides of the base plate 1. A second rotating shaft 602 is rotatably mounted between the two vertical plates 601. The cam 603 is mounted on the second rotating shaft 602. The piston cylinder 604 is located below the cam 603 and is mounted on the base plate 1. A piston 610 is slidably installed inside the piston cylinder 604. A piston rod 609 is mounted on the top of the piston 610. The top end of the piston rod 609 extends to the outside of the piston cylinder 604 and is fitted with a movable plate 611. A first spring 612 is installed between the movable plate 611 and the top of the piston cylinder 604, and around the piston rod 609. Under the action of the first spring 612, the movable plate 611 always abuts against the cam 603. Multiple nozzles 613 are evenly installed horizontally and vertically on the inner top wall of the L-shaped plate 9. These nozzles are connected by pipes located inside the L-shaped plate 9. The bottom of the piston cylinder 604 is connected to the bottom of the water tank 3 via an inlet pipe 607. The piston cylinder 604 is connected to the internal pipes of the L-shaped plate 9 via an outlet pipe 608. Both the inlet pipe 607 and the outlet pipe 608 are equipped with one-way valves. The one-way valve allows water in tank 3 to flow towards piston cylinder 604, and the one-way valve on outlet pipe 608 allows water in piston cylinder 604 to flow towards L-shaped plate 9. The end of the first rotating shaft 503 furthest from the drive motor 502 extends to the outside of the housing 501 and is fitted with a first pulley 507. The end of the second rotating shaft 602 near the first pulley 507 extends to the outside of the vertical plate 601 and is fitted with a second pulley 605. The first pulley 507 and the second pulley 605 are connected by a first belt 606. As the first rotating shaft 503 rotates, the first pulley 507 on the first rotating shaft 503 moves accordingly. The pulley 507 drives the second pulley 605 to rotate via a belt. The second shaft 602 connected to the second pulley 605 rotates accordingly. After the second shaft 602 rotates, it drives the cam 603 to rotate. After the cam 603 rotates, it drives the piston rod 609 to move up and down via the movable plate 611. This, in turn, drives the piston 610 to move up and down inside the piston cylinder 604. Water from the water tank 3 is drawn into the piston cylinder 604 through the water inlet pipe 607, and water from the piston cylinder 604 is transported to the inside of the L-shaped plate 9 pipe. Finally, water is sprayed downwards through the nozzle 613, thereby suppressing the dust generated during the operation of the cleaning mechanism 5, which is beneficial to environmental protection.

[0037] There are two cams 603, which are inverted and symmetrically mounted on the second rotating shaft 602. The number of piston cylinders 604, water inlet pipes 607 and water outlet pipes 608 corresponds one-to-one with the number of cams 603. When the piston 610 moves upward inside the piston cylinder 604, the nozzle 613 cannot spray water and dust will be generated. By setting two cams 603, which are inverted, when one piston 610 moves upward, the other piston 610 will move downward, so that the nozzle 613 sprays water continuously, improving the effect of the spraying mechanism 6.

[0038] The detection mechanism 7 includes a horizontal plate 701, a first threaded rod 702, a movable rod 704, and a detection ball 706. The first threaded rod 702 is threadedly installed in the middle of the base plate 1. The horizontal plate 701 is located below the bottom of the first threaded rod 702. Guide rods 708 are installed on both sides of the horizontal plate 701. The horizontal plate 701 is slidably installed on the base plate 1 via the guide rods 708. A bearing seat 703 is installed in the upper middle part of the horizontal plate 701. The bottom end of the first threaded rod 702 is installed on the bearing seat 703. Multiple movable rods 704 are evenly installed between the first threaded rod 702 and the guide rods 708 and on the horizontal plate 701. The movable rods 704 pass through the horizontal plate 701 and the base plate 1, and are slidably connected to the horizontal plate 701 and the base plate 1. A U-shaped frame 705 is installed at the bottom of the movable rod 704. The detection ball 706 is rotatably installed in the U-shaped frame 705. A second spring 707 is sleeved between the frame 705 and the horizontal plate 701, and around the movable rod 704. When road surface inspection is required, the first threaded rod 702 is rotated to move the horizontal plate 701 downward. When the horizontal plate 701 moves, it will drive the U-shaped frame 705 and the detection ball 706 to move downward synchronously. When the detection ball 706 contacts the ground, the first threaded rod 702 is rotated again. At this time, the detection ball 706 can no longer move downward, and the second spring 707 is compressed. The moving device drives the detection ball 706 to roll on the ground. When it moves to a low-lying road surface, the detection ball 706 moves downward under the action of the second spring 707, which in turn drives the movable rod 704 connected to it to move downward. When it moves to a raised road surface, the detection ball 706 will move upward with the road surface raised, which in turn drives the movable rod 704 connected to it to move up and down, thus realizing the road surface inspection.

[0039] A marking mechanism 8 is installed between the water tank 3 and the detection mechanism 7. The marking mechanism 8 includes a first support frame 801, a feeding roller 802, a support platform 803, a second support frame 804, and a receiving roller 805. Two first support frames 801 are symmetrically installed on both sides of the base plate 1. The feeding roller 802 is rotatably mounted on the first support frame 801, and foam cotton 806 is wound around the feeding roller 802. The support platform 803 is located above the feeding roller 802 and is installed on the base plate 1. The second support frame 804... Two supports 804 are symmetrically installed on both sides of the base plate 1. The second support frame 804 is located on one side of the support platform 803 and its height is greater than that of the first support frame 801. The receiving roller 805 is rotatably mounted on the second support frame 804. One end of the receiving roller 805 extends to the outside of the second support frame 804 and is equipped with a third pulley 807. A fourth pulley 809 is installed on the wheel axle 11 near the water tank 3. The fourth pulley 809 is connected to the third pulley 807 via a second belt 810. The discharging roller 8... The foam cotton 806 on 02 passes over the upper surface of the support platform 803 and wraps around the receiving roller 805. The top of the movable rod 704 is inverted U-shape, and a circular cutter 709 is rotatably mounted on the end of the movable rod 704 away from the U-shaped frame 705. When the detection ball 706 contacts the road surface, the circular cutter 709 on the movable rod 704 contacts the foam cotton 806. When the device moves, the fourth pulley 809 on the wheel axle 11 drives the receiving roller 805 to rotate through the second belt 810. When the receiving roller rotates, it drives the foam cotton 806 to rotate. 06. During movement, when the road surface is flat, the circular cutter 709 leaves slight marks on the surface of the foam 806. When moving to a low-lying road surface, the movable rod 704 will drive the circular cutter 709 downward, and the circular cutter 709 will cut the surface of the foam 806 to different depths. When moving to a raised road surface, the movable rod 704 will drive the circular cutter 709 upward, and the circular cutter 709 will not contact the surface of the foam 806, thus recording the road surface flatness through the foam 806.

[0040] A support plate 812 is installed on the side of the water tank 3 near the third pulley 807. A second threaded rod 813 is installed on the support plate 812 with a transverse thread. A slider 811 is installed at the end of the second threaded rod 813. A groove is opened on the side wall of the water tank 3 to cooperate with the slider 811. The slider 811 is slidably installed in the groove. A tensioning wheel 808 is rotatably installed on the side of the slider 811 away from the water tank 3. The tensioning wheel 808 can realize the tension of the second belt 810. When the detection mechanism 7 is not working, the tensioning wheel 808 does not need to tension the second belt 810. At this time, the belt is too loose and cannot make the receiving roller 805 rotate, thus preventing the foam cotton 806 from moving. This avoids the waste of foam cotton 806 and prevents foam cotton 806 from moving under the action of receiving roller 805 when the detection mechanism 7 is not working.

[0041] The support platform 803 is fixed to the base plate 1 by bolts 10 on both sides of the base plate 1. When the feeding roller 802 needs to be replaced, the support platform 803 can be separated from the base plate 1, which facilitates the installation and disassembly of the feeding roller 802. A support roller 814 is rotatably installed on one side of the support platform 803. The support roller 814 avoids friction between the foam cotton 806 and the end of the support platform 803, which is beneficial to the movement of the foam cotton 806.

[0042] An observation window 32 is installed on one side of the water tank 3, which allows for easy monitoring of the water level inside the water tank 3. A handrail 4 is installed on the side of the water tank 3 away from the cleaning mechanism 5, which facilitates the movement of the pushing device.

[0043] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A road surface smoothness measuring device, comprising a base plate, wheel axles rotatably mounted on both sides of the bottom of the base plate, driving wheels mounted on both sides of the wheel axles, a sweeping mechanism mounted on one end of the base plate, and a detection mechanism mounted on the base plate, characterized in that, An L-shaped plate is provided above the cleaning mechanism. The L-shaped plate is installed on the base plate through a connecting block. One end of the cleaning mechanism is connected to one end of the L-shaped plate. A spraying mechanism is installed on the base plate. The spraying mechanism is located on one side of the cleaning mechanism and is connected to the cleaning mechanism. A water tank is installed at the end of the base plate away from the cleaning mechanism. The water tank is connected to the spraying mechanism and has a water inlet. The detection mechanism includes a horizontal plate, a first threaded rod, a movable rod, and a detection ball. The first threaded rod is located in the middle of the base plate and is threadedly connected to the base plate. The horizontal plate is located below the bottom of the first threaded rod. Guide rods are installed on both sides of the horizontal plate, and the horizontal plate is slidably mounted on the base plate via the guide rods. A bearing seat is installed in the middle of the upper part of the horizontal plate, and the bottom end of the first threaded rod is mounted on the bearing seat. Multiple movable rods are evenly installed on the horizontal plate, and the multiple movable rods are located between the first threaded rod and the guide rods. The movable rods pass through the horizontal plate and the base plate, and are slidably connected to the horizontal plate and the base plate. A U-shaped frame is installed at the bottom of the movable rod, and the detection ball is rotatably mounted in the U-shaped frame. A second spring is sleeved around the movable rod, and the second spring is located between the U-shaped frame and the horizontal plate. A marking mechanism is installed between the water tank and the detection mechanism. The marking mechanism includes a first support frame, a feeding roller, a support platform, a second support frame, and a receiving roller. There are two first support frames, which are symmetrically installed on both sides of the base plate. The feeding roller is rotatably mounted on the first support frame and is wrapped with foam cotton. The support platform is located above the feeding roller and is installed on the base plate. There are two second support frames, which are symmetrically installed on both sides of the base plate. The second support frame is located on one side of the support platform and its height is greater than that of the first support frame. The receiving roller is rotatably mounted on the second support frame. One end of the receiving roller extends to the outside of the second support frame and is equipped with a third pulley. A fourth pulley is installed on the wheel axle near the water tank. The fourth pulley is connected to the third pulley via a second belt. The foam cotton on the feeding roller passes over the upper surface of the support platform and is wrapped around the receiving roller. The top of the movable rod is inverted U-shape, and a circular cutter is rotatably mounted on the end of the movable rod away from the U-shaped frame.

2. The road surface smoothness measuring device according to claim 1, characterized in that, The cleaning mechanism includes a housing, a drive motor, and cleaning rollers. The housing is installed below the end of the base plate. A first rotating shaft is rotatably installed inside the housing. The drive motor is installed on the side wall of the housing and connected to the end of the first rotating shaft. A first bevel gear set and a second bevel gear set are respectively installed inside the housing and at both ends of the first rotating shaft. The driving bevel gears in the first and second bevel gear sets are symmetrically installed at both ends of the first rotating shaft inside the housing. There are two cleaning rollers, which are respectively installed on the driven bevel gears in the first and second bevel gear sets. The other end of the cleaning roller is rotatably installed on the inner side wall of the L-shaped plate. Multiple bristles are evenly installed on the circumference and axial direction of the cleaning roller, and the bristles on the two cleaning rollers are staggered.

3. The road surface smoothness measuring device according to claim 2, characterized in that, The spraying mechanism includes a vertical plate, a cam, a piston cylinder, an inlet pipe, and an outlet pipe. Two vertical plates are symmetrically installed on both sides of a base plate. A second rotating shaft is rotatably mounted between the two vertical plates. The cam is mounted on the second rotating shaft. The piston cylinder is located below the cam and mounted on the base plate. A piston is slidably installed inside the piston cylinder. A piston rod is mounted on the top of the piston. The top of the piston rod extends to the outside of the piston cylinder and is fitted with a movable plate. A first spring is provided around the piston rod and is installed between the movable plate and the top of the piston cylinder. Under the action of the first spring, the movable plate always abuts against the cam. The inner top wall of the L-shaped plate has uniform horizontal and vertical dimensions. Multiple nozzles are installed and connected by pipes located inside the L-shaped plate. The bottom of the piston cylinder is connected to the bottom of the water tank via an inlet pipe, and the piston cylinder is connected to the pipes inside the L-shaped plate via an outlet pipe. Both the inlet and outlet pipes are equipped with one-way valves. The one-way valve on the inlet pipe allows water in the tank to flow towards the piston cylinder, and the one-way valve on the outlet pipe allows water in the piston cylinder to flow towards the L-shaped plate. The end of the first rotating shaft away from the drive motor extends to the outside of the housing and is equipped with a first pulley. The end of the second rotating shaft near the first pulley extends to the outside of the vertical plate and is equipped with a second pulley. The first pulley and the second pulley are connected by a first belt.

4. The road surface smoothness measuring device according to claim 3, characterized in that, There are two cams, which are inverted and symmetrically mounted on the second rotating shaft. The number of piston cylinders, water inlet pipes and water outlet pipes corresponds one-to-one with the number of cams.

5. A road surface evenness measuring device according to claim 1, characterized in that, A support plate is installed on the side of the water tank near the third pulley. A second threaded rod is installed on the support plate with a transverse thread. A slider is installed at the end of the second threaded rod. A groove is opened on the side wall of the water tank to cooperate with the slider. The slider is slidably installed in the groove. A tensioning wheel is rotatably installed on the side of the slider away from the water tank.

6. The road surface smoothness measuring device according to claim 1, characterized in that, The support platform is fixed to the base plate by bolts on both sides of the base plate.

7. The road surface smoothness measuring device according to claim 1, characterized in that, A roller is rotatably mounted on one side of the support platform.

8. A road surface smoothness measuring device according to claim 1, characterized in that, An observation window is installed on one side of the water tank, and a handrail is installed on the side of the water tank away from the cleaning mechanism.

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