Road surface flatness detection device

Abstract

The utility model discloses a road surface flatness detection device. Comprising a body; a road surface cleaning device is arranged on the front side of the vehicle body, and a flatness detection device is arranged on the rear side of the vehicle body; the flatness detection device comprises a lead screw sliding table device vertically arranged on the rear side of the vehicle body, a frame body is connected to the lead screw sliding table device, a rotating roller is rotationally arranged on the frame body, a plurality of pressure sensors are arranged on the rotating roller, ball heads are arranged on the pressure sensors through sleeves, pressure springs are arranged in the sleeves, and the pressure springs are connected with the lead screw sliding table device. The two ends of the pressure spring abut against the pressure sensor and the ball head respectively. The road surface cleaning device comprises a pair of sweeping brushes rotationally arranged at the front end of the vehicle body. The road surface cleaning device is arranged in front of the flatness detection device, so that the road surface can be cleaned up before the road surface flatness is measured, and errors in measurement of the road surface flatness due to foreign matters such as stone garbage and the like can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flatness detection, in particular to a road surface flatness detection device. Background Art

[0002] Flatness is one of the important indicators of road construction quality inspection. It measures the unevenness of the road surface intermittently or continuously with a specified standard gauge. The flatness of the road surface is related to the flatness of each structural layer of the road surface, that is, the flatness effect of each layer will be cumulatively reflected on the surface layer of the road. Since the road surface is in direct contact with the moving vehicle, the uneven surface will increase the resistance to driving, and the vibration of the vehicle will follow. The result of this vibration will cause driving bumps, affecting the driving speed, driving stability and passenger comfort. At the same time, due to the ups and downs, it is easy to impact the road, which will not only damage the vehicle parts but also cause the damage to the road surface to increase. Even water will accumulate on the uneven road surface, accelerating the destruction of the road. However, in order to ensure the flatness of the road surface, when using the traditional three-meter ruler to detect the flatness, the three-meter ruler is placed on the measured road surface, and then the gap value is measured with a feeler gauge. Finally, in the measured data, the maximum value is determined to be the maximum gap value within the range of the three-meter ruler. However, this measurement method is not intuitive and is relatively cumbersome. To this end, a Chinese utility model patent with authorization announcement number CN217900822U discloses an urban road pavement acceptance flatness detection instrument, including a vehicle plate, a fixed frame fixedly connected to the edge of one side of the top surface of the vehicle plate, a lead screw rotatably connected to the center of the fixed frame, guide bars fixedly connected to both sides of the fixed frame, and a lifting slider fixedly connected to the outer walls of the two guide bars; the utility model patent uses a plurality of rows of sliding rods arranged in an interlaced manner, and a plurality of rollers guide the undulations of the road surface during the movement on the road surface, thereby pushing a plurality of pressure sensors to squeeze the pressure plate, and the measured pressure data can be displayed on a display, and the pressure data at different times can be recorded by a timer and a data storage device, so that the road surface flatness data can be obtained by analyzing the changes in the data, and whether the overall flatness meets the standard can be obtained by the amplitude of the data change. However, in actual use, there may be foreign objects such as gravel and garbage on the road surface. If the roller of the utility model presses over foreign objects such as gravel and garbage while moving on the road surface, it will affect the detection data of the pressure sensor, resulting in errors in the measurement of the road surface flatness. Therefore, a device is needed that can clean the road surface before measuring the road surface flatness, so as to avoid errors in the measurement of the road surface flatness due to foreign objects such as gravel and garbage. Utility Model Content

[0003] The purpose of the utility model is to provide a road surface flatness detection device. The utility model is provided with a road surface cleaning device before the flatness detection device, which can clean the road surface before the utility model measures the road surface flatness, thereby avoiding errors in the measurement of the road surface flatness due to foreign objects such as stones and garbage.

[0004] The technical solution of the utility model is as follows: a road surface flatness detection device, comprising a vehicle body; a road surface cleaning device is provided on the front side of the vehicle body, and a flatness detection device is provided on the rear side of the vehicle body; the flatness detection device comprises a lead screw slide device vertically arranged on the rear side of the vehicle body, a frame is connected to the lead screw slide device, a rotating roller is rotatably arranged on the frame, a plurality of pressure sensors are provided on the rotating roller, a ball head is provided on the pressure sensor via a sleeve, a pressure spring is provided in the sleeve, and two ends of the pressure spring respectively contact with the pressure sensor and the ball head; the road surface cleaning device comprises a pair of cleaning brushes rotatably arranged at the front end of the vehicle body.

[0005] In the above-mentioned road surface flatness detection device, a first motor is provided at the rear side of the cleaning brush; a transmission mechanism is connected to the end of the first motor; and the first motor is connected to the cleaning brush via the transmission mechanism.

[0006] The above-mentioned road surface flatness detection device, the cleaning brush includes a cleaning disc rotatably arranged at the front end of the vehicle body, and bristles are arranged at the lower part of the cleaning disc.

[0007] The aforementioned road surface flatness detection device, the transmission mechanism includes a pair of first bevel gears rotatably arranged on the front side of the vehicle body, the lower part of the first bevel gears is connected to the cleaning disc; the first bevel gears are respectively meshed with second bevel gears, a connecting shaft is connected between the second bevel gears, and the connecting shaft is rotatably arranged on the vehicle body; the end of the connecting shaft is connected to a first pulley, the first pulley is connected to a second pulley via a belt, and the second pulley is connected to the end of the first motor.

[0008] In the aforementioned road surface flatness detection device, at least one pair of bearing seats are provided on the front side of the vehicle body, bearings are provided in the bearing seats, and the connecting shaft passes through the bearings.

[0009] The aforementioned road surface flatness detection device, the screw slide device includes a slide seat vertically arranged on the rear side of the vehicle body, the slide seat is rotatably provided with a screw, the screw is engaged with a movable seat, the side of the movable seat is fixed with a connecting block, and the frame is connected to the connecting block.

[0010] In the above-mentioned road surface flatness detection device, slide rails are provided on both sides of the slide seat, and sliders are provided on the slide rails, and the sliders are fixed to the moving seat.

[0011] In the aforementioned road surface flatness detection device, a second motor is provided on the upper portion of the slide seat, and the lead screw is connected to the end of the second motor.

[0012] In the above-mentioned road surface flatness detection device, the end of the ball bearing head is provided with a ball bearing groove, and a ball bearing is embedded in the ball bearing groove.

[0013] In the above-mentioned road surface flatness detection device, a plurality of fixing plates are provided on the side of the rotating roller, a plurality of through holes are provided on the fixing plates, and the ball heads are passed through the through holes; hoop grooves are provided at both ends of the fixing plates, and fixing hoops are embedded in the hoop grooves.

[0014] Compared with the prior art, when the utility model is in use, the road cleaning device first cleans the gravel garbage on the road surface to avoid errors in the measurement of the flatness of the road surface due to foreign objects such as gravel garbage; then when the flatness detection device is in use, the screw slide device moves downward, so that the ball of the ball head contacts the road surface, at this time, the pressure spring is slightly stressed, and the pressure sensor measures an initial pressure value, and then the vehicle body moves, and the rotating roller rotates with the movement of the vehicle body, so that the ball head rolls over the road surface in succession. If pits or protrusions appear on the road surface, the reading measured by the pressure sensor changes compared with the initial pressure value, and then the flatness of the road surface can be reflected from the change in the reading of the pressure sensor; the smaller the change in the reading of the pressure sensor, the higher the flatness of the road surface; the greater the change in the reading of the pressure sensor, the lower the flatness of the road surface; the utility model is provided with a road cleaning device before the flatness detection device, and the road surface can be cleaned before the utility model measures the flatness of the road surface, so that errors in the measurement of the flatness of the road surface due to foreign objects such as gravel garbage can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the flatness detection device and the lead screw slide device;

[0017] Figure 3 is a schematic diagram of the structure of the rotating roller;

[0018] Figure 4 It is a schematic diagram of the structure of the sleeve.

[0019] The markings in the attached drawings are: 1-vehicle body, 2-road cleaning device, 3-flatness detection device, 301-connecting block, 302-frame, 303-rotating roller, 304-pressure sensor, 305-sleeve, 306-ball head, 307-pressure spring, 308-ball groove, 309-ball, 310-fixing plate, 311-through hole, 312-hoop groove, 313-fixing hoop, 4-cleaning brush, 401-cleaning disc ,402-bristles,5-screw slide device,501-slide seat,502-screw,503-moving seat,504-slide rail,505-slider,506-second motor,6-first motor,7-transmission mechanism,701-first bevel gear,702-second bevel gear,703-connecting shaft,704-first pulley,705-belt,706-second pulley,707-bearing seat,708-bearing. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Embodiment: A road surface flatness detection device, the structure of which is as follows Figures 1 to 4As shown, it includes a vehicle body 1, a handle is fixed to the rear of the vehicle body 1 by bolts, two universal wheels for steering are connected to the bottom of the vehicle body 1, and a battery is also provided on the vehicle body 1, which is respectively connected to a first motor 6 and a second motor 506. A road cleaning device 2 is provided on the front side of the vehicle body 1, and a flatness detection device 3 is provided on the rear side of the vehicle body 1; the flatness detection device 3 includes a screw slide device 5 fixed to the rear side of the vehicle body 1, a frame 302 is connected to the screw slide device 5, a rotating roller 303 is rotatably provided on the frame 302, a plurality of countersunk holes are arranged in sequence on the rotating roller 303, a pressure sensor 304 is provided in the countersunk hole, a ball head 306 is provided on the pressure sensor 304 through a sleeve 305, and a pressure sensor 304 is provided in the sleeve 305. The pressure spring 307 has two ends that respectively contact the pressure sensor 304 and the ball head 306. When the ball head 306 is subjected to pressure, the ball head 306 squeezes the pressure spring 307, and the pressure spring 307 transmits the pressure to the pressure sensor 304, so that the pressure sensor 304 obtains the pressure data of the ball head 306. When the ball head 306 is not subjected to pressure, the pressure spring 307 resets. A ball groove 308 is provided at the end of the ball head 306, and a ball 309 is embedded in the ball groove 308. The two ends of the rotating roller 303 are connected with hexagonal fixing blocks, and the sides of the rotating roller 303 are connected with six fixing plates 310 through the hexagonal fixing blocks. The fixing plates 310 are provided with multiple through holes 311, and the ball heads 306 are inserted into the through holes 311. The diameter of the through holes 311 is smaller than the diameter of the countersunk hole, and the sleeve 305 is fixed in the countersunk hole through the fixing plates 310; the two ends of the fixing plates 310 are provided with hoop grooves 312, and the hoop grooves 312 are embedded with fixing hoops 313, and the fixing plates 310 are fixed on the hexagonal fixing blocks through the fixing hoops 313. When the flatness detection device 3 is in use, the screw slide device 5 moves downward, so that the ball 309 of the ball head 306 contacts the road surface. At this time, the pressure spring 307 is slightly stressed, and the pressure sensor 304 measures an initial pressure value. Then the vehicle body 1 moves, and the rotating roller 303 rotates with the movement of the vehicle body 1, so that the ball head 306 rolls over the road surface one after another. If pits or bumps appear on the road surface, the reading measured by the pressure sensor 304 changes compared to the initial pressure value, and the flatness of the road surface can be reflected from the change in the reading of the pressure sensor 304; the smaller the change in the reading of the pressure sensor 304, the higher the flatness of the road surface; the greater the change in the reading of the pressure sensor 304, the lower the flatness of the road surface.

[0022] The screw slide device 5 includes a slide seat 501 vertically arranged at the rear side of the vehicle body 1, and a first reinforcing rib is fixed to the rear side of the slide seat 501; a screw rod 502 is rotatably arranged on the slide seat 501, and a moving seat 503 is meshed on the screw rod 502, and a connecting block 301 is fixed to the side of the moving seat 503, and a second reinforcing rib is fixed to the connecting block 301, and the frame 302 is connected to the connecting block 301. Slide rails 504 are arranged on both sides of the slide seat 501, and a slider 505 is arranged on the slide rail 504, and the slider 505 is fixed to the moving seat 503. A second motor 506 is arranged on the upper part of the slide seat 501, and the screw rod 502 is connected to the end of the second motor 506. The rotation of the second motor 506 drives the screw rod 502 to rotate, and the rotation of the screw rod 502 drives the moving seat 503 to move up and down, and the moving seat 503 moves up and down to drive the flatness detection device 3 to move up and down.

[0023] The road cleaning device 2 includes a pair of cleaning brushes 4 rotatably arranged at the front end of the vehicle body 1, and the cleaning brushes 4 are used to clean the garbage at the front end of the vehicle body 1; the cleaning brush 4 includes a cleaning disc 401 rotatably arranged at the front end of the vehicle body 1, and bristles 402 are arranged at the lower part of the cleaning disc 401. A first motor 6 is arranged at the rear side of the cleaning brush 4; a transmission mechanism 7 is connected to the end of the first motor 6; the first motor 6 is connected to the cleaning brush 4 through the transmission mechanism 7. The transmission mechanism 7 includes a pair of first bevel gears 701 rotatably arranged at the front side of the vehicle body 1, the lower part of the first bevel gear 701 is connected to the cleaning disc 401, the first bevel gear 701 is respectively meshed with a second bevel gear 702, and a connecting shaft 703 is connected between the second bevel gears 702, and the connecting shaft 703 is rotatably arranged on the vehicle body 1; the end of the connecting shaft 703 is connected to a first pulley 704, the first pulley 704 is connected to a second pulley 706 via a belt 705, and the second pulley 706 is connected to the end of the first motor 6. At least one pair of bearing seats 707 are provided at the front side of the vehicle body 1, and bearings 708 are provided in the bearing seats 707, and the connecting shaft 703 is passed through the bearings 708. When the transmission mechanism 7 is working, the end of the first motor 6 rotates forward, so that the second pulley 706 rotates forward, and the second pulley 706 drives the first pulley 704 to rotate forward through the belt 705, and the first pulley 704 drives the second bevel gear 702 to rotate forward through the connecting shaft 703, and the second bevel gear 702 drives the first bevel gear 701 to rotate outward, thereby causing the cleaning brush 4 to rotate outward, so that the garbage in front of the vehicle body 1 can be swept outward, and the flatness detection device 3 can be prevented from pressing on the garbage stones and causing errors in the measurement of the flatness of the road surface.

[0024] Working principle: When the utility model is in use, the road cleaning device 2 first cleans the gravel garbage on the road surface to avoid errors in the measurement of the flatness of the road surface due to gravel garbage and other foreign objects; then when the flatness detection device 3 is in use, the screw slide device 5 moves downward, so that the ball 309 of the ball head 306 contacts the road surface. At this time, the pressure spring 307 is slightly stressed, and the pressure sensor 304 measures an initial pressure value. Then the vehicle body 1 moves forward, and the rotating roller 303 rotates with the movement of the vehicle body 1, so that the ball head 306 rolls over the road surface one after another. If there are pits or convexities on the road surface, When the pressure value of the road surface changes, the reading measured by the pressure sensor 304 changes compared to the initial pressure value, and the flatness of the road surface can be reflected from the change in the reading of the pressure sensor 304; the smaller the change in the reading of the pressure sensor 304, the higher the flatness of the road surface; the larger the change in the reading of the pressure sensor 304, the lower the flatness of the road surface; the utility model is provided with a road surface cleaning device 2 before the flatness detection device 3, which can clean the road surface before the utility model measures the flatness of the road surface, so as to avoid errors in the measurement of the flatness of the road surface due to foreign objects such as stones and garbage.

[0025] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. In this embodiment, up, down, left, right, front, and back only represent their relative positions and do not represent their absolute positions. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A road surface flatness detection device, comprising a vehicle body (1); characterized in that: A road surface cleaning device (2) is provided on the front side of the vehicle body (1), and a flatness detection device (3) is provided on the rear side of the vehicle body (1); the flatness detection device (3) comprises a lead screw slide device (5) vertically arranged on the rear side of the vehicle body (1); a frame (302) is connected to the lead screw slide device (5); a rotating roller (303) is rotatably arranged on the frame (302); a plurality of pressure sensors (304) are provided on the rotating roller (303); a ball head (306) is provided on the pressure sensor (304) via a sleeve (305); a pressure spring (307) is provided in the sleeve (305); two ends of the pressure spring (307) are respectively in contact with the pressure sensor (304) and the ball head (306); the road surface cleaning device (2) comprises a pair of cleaning brushes (4) rotatably arranged at the front end of the vehicle body (1).

2. The road surface flatness detection device according to claim 1, characterized in that: A first motor (6) is provided on the rear side of the cleaning brush (4); an end of the first motor (6) is connected to a transmission mechanism (7); and the first motor (6) is connected to the cleaning brush (4) via the transmission mechanism (7).

3. The road surface flatness detection device according to claim 2, characterized in that: The cleaning brush (4) comprises a cleaning disc (401) rotatably arranged at the front end of the vehicle body (1), and bristles (402) are arranged at the lower part of the cleaning disc (401).

4. The road surface flatness detection device according to claim 3, characterized in that: The transmission mechanism (7) comprises a pair of first bevel gears (701) rotatably arranged on the front side of the vehicle body (1), the lower part of the first bevel gears (701) being connected to the cleaning disc (401); the first bevel gears (701) are respectively meshed with second bevel gears (702), a connecting shaft (703) is connected between the second bevel gears (702), and the connecting shaft (703) is rotatably arranged on the vehicle body (1); the end of the connecting shaft (703) is connected to a first pulley (704), the first pulley (704) is connected to a second pulley (706) via a belt (705), and the second pulley (706) is connected to the end of the first motor (6).

5. The road surface flatness detection device according to claim 4, characterized in that: At least one pair of bearing seats (707) is provided on the front side of the vehicle body (1), bearings (708) are provided in the bearing seats (707), and the connecting shaft (703) is inserted into the bearings (708).

6. The road surface flatness detection device according to claim 1, characterized in that: The screw slide device (5) comprises a slide seat (501) vertically arranged at the rear side of the vehicle body (1); a screw rod (502) is rotatably arranged on the slide seat (501); a movable seat (503) is meshed with the screw rod (502); a connecting block (301) is fixed to the side of the movable seat (503); and the frame (302) is connected to the connecting block (301).

7. The road surface flatness detection device according to claim 6, characterized in that: Slide rails (504) are provided on both sides of the slide seat (501), and sliding blocks (505) are provided on the sliding rails (504). The sliding blocks (505) are fixed to the moving seat (503).

8. The road surface flatness detection device according to claim 6, characterized in that: A second motor (506) is provided on the upper portion of the slide seat (501), and the lead screw (502) is connected to the end of the second motor (506).

9. The road surface flatness detection device according to claim 1, characterized in that: A ball groove (308) is provided at the end of the ball head (306), and a ball (309) is embedded in the ball groove (308).

10. The road surface flatness detection device according to claim 1, characterized in that: A plurality of fixing plates (310) are provided on the side of the rotating roller (303), a plurality of through holes (311) are provided on the fixing plates (310), and the ball heads (306) are inserted into the through holes (311); hoop grooves (312) are provided at both ends of the fixing plates (310), and fixing hoops (313) are embedded in the hoop grooves (312).

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