Asphalt pavement flatness detection equipment

Abstract

The utility model discloses asphalt pavement flatness detection equipment, which can be flexibly mounted and matched with various types of detection vehicle bodies such as a cart type flatness instrument and a motor vehicle type flatness instrument through a mounting assembly, and can adjust the height difference between the equipment and an asphalt pavement according to the heights of different types of detection vehicle body mounting points through a telescopic frame. The servo motor drives the sweeping rod to rotate with the transmission shaft as the axis, the initial sweeping rod is parallel to the asphalt ground, after sweeping is started, the sweeping rod rotates by 90 degrees towards the advancing side, the bristles can sweep sundries on the advancing road surface of the detection vehicle body to the outer side of the running path, and the sweeping effect is guaranteed. In the advancing detection process of the detection vehicle body, the servo motor drives the sweeping rod to rotate back and forth according to the set frequency, thereby preventing sundries on the road surface from damaging the detection vehicle body or influencing the advancing of the detection vehicle body, preventing the sundries from interfering the detection, and ensuring the accuracy of the detection result and the safety of the detection vehicle body.

Description

Technical Field

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

[0002] Asphalt pavement uses asphalt binder to effectively improve the road's ability to resist damage from driving and natural factors, and is widely used in road construction. Asphalt pavement has the advantages of good anti-skid performance, strong shock absorption performance, and high durability, making it the first choice for highway construction. The flatness of asphalt pavement directly affects the comfort and safety performance of vehicle driving. Uneven pavement will cause vehicle bumps, which not only reduces passenger comfort, but may also affect the driver's handling stability and increase the risk of accidents. By conducting flatness testing on asphalt pavement, problems with the pavement can be discovered in a timely manner, providing data reference for construction quality, and providing technical guidance for asphalt pavement repair and maintenance, ensuring the normal use of the pavement and extending its service life.

[0003] There are many technical methods for testing the smoothness of asphalt pavement, including laser smoothness meter method, camera method, three-meter ruler method, vehicle-mounted bump accumulation meter, vibration smoothness meter method and continuous smoothness meter. According to the actual situation and testing needs of different asphalt pavements, selecting appropriate testing methods and equipment will help ensure the accuracy and reliability of the test results. However, garbage, gravel and other debris on the asphalt pavement will interfere with the testing equipment and cause errors in the test results. Not only that, the hard debris may also cause physical damage to the testing equipment or cause the testing equipment to be unstable such as skidding or bumping, thereby affecting the normal use and life of the equipment, affecting the test results and increasing safety risks during the test process. Utility Model Content

[0004] The utility model aims to provide a flatness detection device for an asphalt pavement, so as to solve the problem that when the detection device is running, debris on the asphalt pavement affects the detection result, increases the safety risk in the detection, and affects the normal use and life of the equipment.

[0005] In order to solve the above technical problems, the utility model provides an asphalt pavement flatness detection device, including a detection vehicle body and a support frame, a telescopic frame is fixed on the top of the support frame, a mounting assembly is fixed on the side of the telescopic frame close to the detection vehicle body, the mounting assembly is installed on the forward side of the detection vehicle body, a hollow rod is fixed on the bottom of the support frame, a transmission shaft is arranged inside the hollow rod, a servo motor is connected to the top end of the transmission shaft, the servo motor is fixed on the side of the support frame away from the hollow rod, the bottom end of the transmission shaft extends out of the hollow rod and is connected to a cleaning rod, and bristles are installed on the cleaning rod facing the asphalt pavement.

[0006] It should be noted in the solution that the telescopic frame includes an electric telescopic rod fixed to the top of the support frame and a top plate fixed to the top of the electric telescopic rod, and the servo motor is located between the top plate and the support frame.

[0007] It is further worth explaining that the mounting assembly includes a hollow plate fixed on one side of the top plate, an elastic member is fixed inside the hollow plate, the elastic member is connected to an L-shaped plate, the outer wall of the L-shaped plate is slidingly connected to the inner wall of the hollow plate, and one side of the L-shaped plate is stuck on the forward side of the detection vehicle body.

[0008] As a preferred embodiment, there are two hollow rods, which are respectively arranged at the two side ends of the support frame and are both located on the outside of the running wheels of the detection vehicle body, and the ends of the two cleaning rods away from the hollow rods are in conflict with each other.

[0009] As a preferred embodiment, a tailgate is commonly fixed to one side of the two hollow rods close to the detection vehicle body, and the bottom edge of the tailgate is in contact with the asphalt road surface.

[0010] It is further worth noting that the side of the tailgate close to the asphalt pavement is an inclined surface, the inclined direction of the inclined surface is downward, and the contact end of the tailgate and the asphalt pavement is wrapped with a polyurethane material.

[0011] As a preferred implementation, a digital camera is also fixed on the support frame, the digital camera is electrically connected to a processor, and the processor is electrically connected to the servo motor.

[0012] Compared with the prior art, the asphalt pavement flatness detection device provided by the utility model has at least the following beneficial effects:

[0013] A telescopic frame is fixed on the top of the support frame, and a mounting assembly is fixed on the side of the telescopic frame close to the inspection vehicle body. The support frame is installed on the forward side of the inspection vehicle body by using the mounting assembly, so that when the inspection vehicle body moves forward for inspection, the cleaning structure connected to the support frame can remove debris on the forward road surface. The support frame and its upper structure can be flexibly installed on various types of inspection vehicles such as cart-type smoothness meters and motor vehicle-type smoothness meters through the mounting assembly. The height difference between the equipment and the asphalt pavement can be adjusted through the telescopic frame, thereby ensuring that the bristles can contact the asphalt pavement when installed on different types of inspection vehicles, thereby ensuring the cleaning effect and enabling the equipment to be adapted to various inspection vehicles. A hollow rod is fixed at the bottom of the support frame, and a sensor is arranged inside the hollow rod. The driving shaft and the top of the transmission shaft are connected with a servo motor, which is fixed on the side of the support frame away from the hollow rod. The bottom end of the transmission shaft extends out of the hollow rod and is connected with a cleaning rod. The cleaning rod is installed with bristles on the side facing the asphalt road surface. The servo motor drives the cleaning rod to rotate with the transmission shaft as the axis. Initially, the cleaning rod is parallel to the asphalt ground. After cleaning begins, the cleaning rod rotates 90° to the forward side. The bristles can sweep the debris on the road surface forward of the inspection vehicle to the outside of the driving path. During the forward inspection of the inspection vehicle, the servo motor drives the cleaning rod to rotate back and forth at the set frequency, which can prevent road debris from damaging the inspection vehicle or affecting the movement of the inspection vehicle, prevent debris from interfering with the inspection, and ensure the accuracy of the inspection results and the safety of the inspection vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0015] Figure 1 A schematic diagram of the installation of a flatness detection device for an asphalt pavement provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of a device for detecting the flatness of an asphalt pavement provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the installation assembly provided by the utility model;

[0018] Figure 4 A schematic diagram of the connection relationship between the servo motor and the cleaning rod provided by the utility model;

[0019] In the figure: 1. detection vehicle body; 100. walking wheel; 2. support frame; 3. telescopic frame; 300. electric telescopic rod; 310. top plate; 4. installation assembly; 400. hollow plate; 410. elastic member; 420. L-shaped plate; 5. hollow rod; 6. transmission shaft; 7. servo motor; 8. cleaning rod; 9. bristles; 10. tailgate; 11. digital camera; 12. processor. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0021] The core of the utility model is to provide a flatness detection device for an asphalt pavement, which solves the problem that when the detection device is running, debris on the asphalt pavement affects the detection results, increases the safety risks in the detection, and affects the normal use and life of the equipment.

[0022] Figure 1 This is a schematic diagram of the installation of an asphalt pavement flatness detection device provided by the utility model. Figure 2 This is a schematic diagram of the structure of an asphalt pavement flatness detection device provided by the utility model. Figure 3 This is a schematic diagram of the installation assembly structure provided by the utility model. Figure 4 The schematic diagram of the connection relationship between the servo motor and the cleaning rod provided by the utility model is shown in FIG. Figures 1 to 4 shown.

[0023] Example 1

[0024] A device for testing the flatness of an asphalt pavement, see Figure 1 , including a detection vehicle body 1 and a support frame 2. It should be noted that the detection vehicle body 1 can be any of a variety of types such as a cart-type flatness meter, a motor vehicle-type flatness meter, and is not limited to the detection method. A telescopic frame 3 is fixed on the top of the support frame 2. The telescopic frame 3 can adjust the height difference between the equipment and the asphalt pavement according to the height of the installation point of different types of detection vehicles 1, thereby ensuring the cleaning effect when the equipment is installed on different detection vehicles 1. A mounting component 4 is fixed on the side of the telescopic frame 3 close to the detection vehicle body 1. The mounting component 4 is installed on the forward side of the detection vehicle body 1. The mounting component 4 is convenient for installing the equipment on the forward side of different types of detection vehicles 1, so that the detection vehicle body 1 can clear debris on the forward road surface while traveling for detection. A hollow rod 5 is fixed on the bottom of the support frame 2, and a transmission shaft 6 is arranged inside the hollow rod 5. See Figure 4, the top end of the transmission shaft 6 is connected to a servo motor 7, which is fixed on the side of the support frame 2 away from the hollow rod 5. The bottom end of the transmission shaft 6 extends out of the hollow rod 5 and is connected to a cleaning rod 8. The cleaning rod 8 is installed with bristles 9 on the side facing the asphalt road surface. After the fixing is completed by the installation component 4, the telescopic frame 3 is adjusted to make the bristles 9 contact with the asphalt ground. When the vehicle body 1 is detected during travel, the servo motor 7 is started, and the servo motor 7 drives the cleaning rod 8 to rotate with the transmission shaft 6 as the axis. In the initial state, the cleaning rod 8 is parallel to the asphalt ground. When cleaning, the servo motor 7 drives the cleaning rod 8 to rotate 90° to the forward side according to the set frequency, and then the servo motor 7 reverses to drive the cleaning rod 8 to rotate 90° to reset to the initial state. The set frequency can be determined according to the cleaning radius of the cleaning rod 8 and the traveling speed of the detection vehicle 1, so that the cleaning rod 8 can clean the debris on the road surface to the outside of the driving path while the detection vehicle 1 is moving forward for detection, so as to avoid the interference of debris on the detection result, ensure the accuracy of the detection result, prevent the debris from causing physical damage to the detection vehicle 1 or affecting the forward stability of the detection vehicle 1, and ensure the normal use and safety of the detection vehicle 1. In some feasible implementation methods, there is one hollow rod 5, which is located at one end of the support frame 2, and the length of the cleaning rod 8 is greater than the width between the walking wheels 100 of the detection vehicle 1, so as to ensure that the debris is away from the traveling path of the detection vehicle 1 when the cleaning rod 8 rotates.

[0025] Specifically, see Figure 2 and Figure 3 The installation assembly 4 includes a hollow plate 400 fixed to one side of the top plate 310, an elastic member 410 is fixed inside the hollow plate 400, and the elastic member 410 is connected to an L-shaped plate 420. The outer wall of the L-shaped plate 420 is slidably connected to the inner wall of the hollow plate 400. During the actual installation process, the L-shaped plate 420 is pulled, and the elastic member 410 is elastically deformed. The L-shaped plate 420 slides outward in the hollow plate 400, and the installation is completed by clamping one side of the L-shaped plate 420 against the forward side of the detection vehicle body 1. The pulling force of the elastic member 410 and the supporting force between the L-shaped plate 420 and the detection vehicle body 1 are balanced to firmly fix the top plate 310. On the forward side of the detection vehicle body 1, it should be further explained that the telescopic frame 3 includes an electric telescopic rod 300 fixed to the top of the support frame 2 and a top plate 310 fixed to the top of the electric telescopic rod 300. The servo motor 7 is located between the top plate 310 and the support frame 2. When the mounting assembly 4 installs the top plate 310 on different detection vehicle bodies 1, the distance between the top plate 310 and the asphalt pavement changes. By controlling the electric telescopic rod 300 to retract or extend, the height difference between the support frame 2 and the ground can be adjusted, thereby ensuring that the bristles 9 for different detection vehicle bodies 1 can all contact the asphalt pavement, thereby ensuring the cleaning effect when adapting to a variety of detection vehicle bodies 1.

[0026] Example 2

[0027] Based on Example 1, some preferred implementations are that the hollow rods 5 are two, see Figure 1 The two hollow rods 5 are respectively arranged at the two side ends of the support frame 2 and are both located on the outside of the walking wheels 100 of the detection vehicle body 1, so as to ensure that after the cleaning rod 8 rotates to clean, the debris is located on both sides of the travel path of the detection vehicle body 1, so as to avoid the accumulation of debris after cleaning. The ends of the two cleaning rods 8 away from the hollow rods 5 conflict with each other, which can ensure that the two cleaning rods 8 can completely cover the entire travel path when they cooperate with each other to clean. By designing two groups of hollow rods 5 and cleaning rods 8, although the cleaning radius in one cleaning is shortened, compared with one group of hollow rods 5 and cleaning rods 8, the cleaning is more stable and efficient, and the speed of completing one cleaning is faster. When the detection vehicle body 1 moves forward at a faster speed, the cleaning effect can also be guaranteed.

[0028] Furthermore, in order to prevent debris from being missed between the two cleaning rods 8 during the cleaning rotation or from being brought back to the travel path of the detection vehicle body 1 when the cleaning rods 8 are reset, a rear baffle 10 is fixed to one side of the two hollow rods 5 close to the detection vehicle body 1. The bottom edge of the rear baffle 10 is in conflict with the asphalt road surface. On the one hand, the rear baffle 10 can push a small amount of debris that is missed or reset away from the detection vehicle body 1 when the detection vehicle body 1 moves forward for inspection, so as to fully ensure that the detection vehicle body 1 will not be affected by debris when it is moving. On the other hand, when the asphalt road surface of the detection section is When the road surface is relatively clean and only a small amount of debris is present, the servo motor 7 can be turned off, and the tailgate 10 can be used to push a small amount of debris on the road surface away from the travel path during detection, thereby achieving cleaning work during the detection process. Preferably, the side of the tailgate 10 close to the asphalt road surface is an inclined surface, and the inclined surface is inclined downward, which is convenient for shoveling and pushing debris and reducing the wear area of ​​the asphalt road surface on the tailgate 10 during the cleaning process. The contact end of the tailgate 10 and the asphalt road surface is wrapped with a polyurethane material, which has excellent wear resistance and elasticity, and can reduce The invention can reduce the vibration of the tailgate 10 when it contacts the ground and debris, ensure the overall stability of the equipment, prevent the tailgate 10 from being damaged due to friction, and extend the service life of the tailgate 10. Preferably, a digital camera 11 is also fixed on the support frame 2, and the digital camera 11 is electrically connected to the processor 12. On the one hand, for asphalt pavements with many potholes and serious damage, the digital camera 11 can capture the road surface image and transmit it to the system through the processor 12 to provide auxiliary detection data. The image processing technology is used for analysis to obtain indicators such as the road surface flatness, pothole depth, and the number of cracks. The comprehensive detection data of the vehicle body 1 and the digital camera 11 can further improve the accuracy of the complex road surface flatness detection. On the other hand, the processor 12 is electrically connected to the servo motor 7, and the amount of debris on the asphalt pavement can be monitored through the digital camera 11. When there is a lot of debris, the processor 12 transmits a signal to start the servo motor 7 to start cleaning. When there is less or no debris, the servo motor 7 is not started, thereby improving the intelligence of the equipment and reducing the energy consumption of the equipment.

[0029] The utility model can be adapted to various types of testing vehicle bodies 1 such as cart-type smoothness meters and motor vehicle-type smoothness meters through the installation component 4. The support frame 2 is installed on the forward side of the testing vehicle body 1 by using the installation component 4, so that when the testing vehicle body 1 is moving forward for testing, the cleaning structure connected to the support frame 2 can remove debris on the forward road surface. The height difference between the equipment and the asphalt road surface can be adjusted according to the height of the installation point of different types of testing vehicle bodies 1 through the telescopic frame 3, so as to ensure that the brush bristles 9 can all contact with the asphalt road surface when the equipment is installed on different testing vehicle bodies 1, and ensure that the equipment is adapted to multiple The cleaning effect when the detection vehicle body 1 is detected is shown in FIG. 1 . The servo motor 7 drives the cleaning rod 8 to rotate around the transmission shaft 6 as the axis. The initial cleaning rod 8 is parallel to the asphalt ground. After the cleaning starts, the cleaning rod 8 rotates 90° to the forward side, and the bristles 9 can clean the debris on the road surface of the detection vehicle body 1 to the outside of the driving path. During the forward detection of the detection vehicle body, the servo motor drives the cleaning rod to rotate back and forth at a set frequency, which can prevent the road debris from damaging the detection vehicle body 1 or affecting the movement of the detection vehicle body 1, prevent the debris from interfering with the detection, and ensure the accuracy of the detection result and the safety of the detection vehicle body 1.

[0030] Those skilled in the art will readily come up with other embodiments of the present invention after considering the specification and practicing the application disclosed herein. The present invention is intended to cover any variation, use or adaptation of the present invention, which follows the general principles of the present invention and includes common knowledge or customary technical means in the art disclosed by the present invention. The specification and examples are to be regarded as exemplary only, and the true scope of the present invention is indicated by the claims.

[0031] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present invention do not constitute a limitation on the scope of protection of the present invention.

Claims

1. A device for detecting the flatness of an asphalt pavement, characterized in that: include: A detection vehicle body (1) and a support frame (2), wherein a telescopic frame (3) is fixed on the top of the support frame (2), a mounting assembly (4) is fixed on the side of the telescopic frame (3) close to the detection vehicle body (1), and the mounting assembly (4) is mounted on the forward side of the detection vehicle body (1), a hollow rod (5) is fixed on the bottom of the support frame (2), a transmission shaft (6) is arranged inside the hollow rod (5), a servo motor (7) is connected to the top end of the transmission shaft (6), and the servo motor (7) is fixed on the side of the support frame (2) away from the hollow rod (5), and a cleaning rod (8) is connected to the bottom end of the transmission shaft (6) extending out of the hollow rod (5), and a brush (9) is mounted on the side of the cleaning rod (8) facing the asphalt road surface.

2. The asphalt pavement flatness detection device according to claim 1, characterized in that: The telescopic frame (3) comprises an electric telescopic rod (300) fixed to the top of the support frame (2) and a top plate (310) fixed to the top of the electric telescopic rod (300), and the servo motor (7) is located between the top plate (310) and the support frame (2).

3. The asphalt pavement flatness detection device according to claim 2, characterized in that: The mounting assembly (4) comprises a hollow plate (400) fixed to one side of the top plate (310), an elastic member (410) being fixed inside the hollow plate (400), the elastic member (410) being connected to an L-shaped plate (420), an outer wall of the L-shaped plate (420) being slidably connected to an inner wall of the hollow plate (400), and one side of the L-shaped plate (420) being clamped against the forward side of the detection vehicle body (1).

4. The asphalt pavement flatness detection device according to claim 1, characterized in that: There are two hollow rods (5), which are respectively arranged at the two side ends of the support frame (2) and are both located outside the running wheels (100) of the detection vehicle body (1), and the ends of the two cleaning rods (8) away from the hollow rods (5) are in contact with each other.

5. The asphalt pavement flatness detection device according to claim 4, characterized in that: A rear baffle (10) is commonly fixed to one side of the two hollow rods (5) close to the detection vehicle body (1), and the bottom edge of the rear baffle (10) contacts the asphalt road surface.

6. The asphalt pavement flatness detection device according to claim 5, characterized in that: The side of the tailgate (10) close to the asphalt pavement is an inclined surface, the inclined direction of the inclined surface is downward, and the contact end of the tailgate (10) with the asphalt pavement is wrapped with a polyurethane material.

7. The asphalt pavement flatness detection device according to claim 1, characterized in that: A digital camera (11) is also fixed on the support frame (2); the digital camera (11) is electrically connected to a processor (12); and the processor (12) is electrically connected to the servo motor (7).

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