Automatic road surface apparent damage detection device based on AIoT technology

Abstract

The invention discloses an automatic road surface apparent damage detection device based on an AIoT technology, and relates to the technical field of road detection. Comprising a mounting frame, a data processing module and a tilt angle sensor are mounted on the mounting frame, a laser range finder is mounted on the mounting frame through a frame, the mounting frame is provided with an adjusting mechanism, the mounting frame is rotationally connected with an L-shaped piece, the L-shaped piece is fixedly connected with a mounting shell, a fixing frame is slidably connected into the mounting shell, and the fixing frame is fixedly connected with the L-shaped piece. The fixed frame is provided with an identification element; the adjusting mechanism is used for adjusting the position and the angle of the recognition element in real time according to data of the laser range finder and the tilt angle sensor, and the coverage range recognized by the recognition element is maintained. The state of the inspection vehicle is recognized according to data of the laser range finder and the tilt angle sensor, the height and angle of the recognition element are adjusted through the adjusting mechanism, it is kept that the recognition element can completely cover the road surface, and the situation of missing detection is prevented.

Description

Technical Field

[0001] The present invention relates to the field of road detection technology, and in particular to an automatic road pavement surface damage detection device based on AIoT technology. Background Art

[0002] During the period of road use, due to traffic load, thermal expansion and contraction, construction quality and other reasons, the road surface may develop apparent damage such as cracks and potholes. In order to maintain the normal use of the road, it is necessary to regularly inspect the apparent damage of the road surface. Currently, patrol personnel usually drive patrol vehicles on the road to be inspected, capture the apparent damage of the road surface with the help of the camera on the patrol vehicle, identify the apparent damage of the road surface through AI and record the location of the damage in combination with positioning technology. When inspecting narrow roads, the recognition range of the camera is usually adjusted to a width that can cover the entire road surface before the inspection. Since there will be potholes and bumps on some roads, when the patrol vehicle passes through the potholes and bumps, the patrol vehicle tilts relative to the road surface, causing the distance between the camera and the ground to change, resulting in a change in the recognition range of the camera. The camera cannot completely cover the entire road surface, which can easily lead to missed inspections. Summary of the invention

[0003] The present invention provides an automatic road pavement surface damage detection device based on AIoT technology to overcome the disadvantage that when the inspection vehicle shakes, the range of the road surface detected by the camera changes, resulting in missed detection.

[0004] Technical solution: An automatic road pavement surface damage detection device based on AIoT technology, comprising: a mounting frame, a plurality of legs fixedly connected to the mounting frame, a fixing component installed on the legs, a data processing module and an inclination sensor installed on the mounting frame, a laser rangefinder installed on the mounting frame through a bracket, an adjustment mechanism provided on the mounting frame, an L-shaped piece rotatably connected to the mounting frame, a mounting shell fixedly connected to the L-shaped piece, a fixing frame slidably connected in the mounting shell, and an identification element installed on the fixing frame; the data processing module is used to judge cracks and potholes on the road surface according to data obtained by the identification element during the movement of the mounting frame, and to derive the size of the cracks and potholes in combination with the data of the laser rangefinder and the inclination sensor, and the adjustment mechanism is used to adjust the position and angle of the identification element in real time according to the data of the laser rangefinder and the inclination sensor to maintain the coverage range identified by the identification element.

[0005] Furthermore, the adjustment mechanism includes: a motor, installed in the mounting frame at a position close to the L-shaped part, and the motor and the L-shaped part are transmitted through gears and gear rings; an electric push rod, installed in the mounting shell, and its telescopic end is fixedly connected to the fixed frame; a sealing member, fixedly connected between the fixed frame and the mounting shell.

[0006] Furthermore, the fixing assembly includes: a ball joint shell fixedly connected to the support leg, the ball joint shell is spherically connected to a fixing piece; a suction cup shell fixedly connected to the lower side of the fixing piece, the suction cup shell is slidably connected to a pull rod, the pull rod is rotatably connected to a lever, and the lower side of the pull rod is fixed to an adsorption cup.

[0007] Furthermore, in the vertical direction, the highest point of the suction cup is lower than the lowest point of the adjacent suction cup shell.

[0008] Furthermore, it also includes: a plurality of reinforcement rings, respectively fixed to the adjacent adsorption plates, for enhancing the strength of the adsorption plates; a plurality of reinforcement strips, fixed to the adjacent reinforcement strips, for connecting the adjacent reinforcement strips into a whole.

[0009] Furthermore, it also includes: sponge rings, the number of which is equal to the number of the legs, which are respectively fixed to the adjacent positions of the adsorption plates away from their central axes, the adsorption plates are provided with a liquid storage portion, the suction cup shell is provided with an extrusion portion, and the extrusion portion is extruded and matched with the adjacent liquid storage portion; elastic baffles, the number of which is equal to the number of the legs, which are respectively fixed to the adjacent liquid storage portions, the elastic baffles cooperate with the adjacent adsorption plates to form a first chamber and a second chamber, the liquid storage portion is provided with an arc-shaped through hole connected to the adjacent first chamber, the first chamber is located between the adjacent second chamber and the adjacent arc-shaped through hole, and water is stored in the first chamber.

[0010] Furthermore, the second chamber contains a gas with a large thermal expansion coefficient.

[0011] Furthermore, it also includes: limiting parts, the number of which is equal to the number of the legs, and are respectively connected to the adjacent suction cup shells in a limiting sliding manner, the pull rod is sealed and slidably connected to the adjacent limiting parts, the shift rod is extruded and fitted with the adjacent limiting parts, and a spring is fixed between the pull rod and the adjacent limiting parts.

[0012] Furthermore, it also includes: electromagnets, the number of which is equal to the number of the legs, which are respectively connected to the adjacent suction cup shells in a limited sliding manner, a tension spring is fixedly connected between the electromagnet and the adjacent suction cup shells, two electric contacts are respectively installed on the suction cup shell and the limiting member, the electric contacts on the suction cup shell are in contact and cooperate with the electric contacts corresponding to the adjacent limiting member, the electromagnet is electrically connected to the two electric contacts on the adjacent limiting member, and a torsion spring is fixedly connected between the shift rod and the adjacent pull rod.

[0013] Furthermore, the elastic coefficient of the torsion spring between the shifting rod and the adjacent pull rod is greater than the elastic coefficient of the spring between the pull rod and the adjacent limit member.

[0014] The beneficial effects of adopting the above technical scheme are as follows: the present invention identifies the status of the inspection vehicle according to the data of the laser rangefinder and the inclination sensor, and adjusts the height and angle of the identification element by means of the adjustment mechanism, so as to keep the identification element able to completely cover the road surface and prevent missed inspections; the device is initially fixed by the deformation of the adsorption plate due to gravity, which is convenient for the inspection personnel to position and install the device; the reinforcement ring and the reinforcement bar act as the "skeleton" of the adsorption plate to provide support for the adsorption plate and reduce the impact of the high temperature in summer on the adsorption force of the adsorption plate; a water film is set between the adsorption plate and the roof of the inspection vehicle by means of a sponge ring, and the tiny gap between the adsorption plate and the roof is filled with water, so that the adsorption plate and the roof are in closer contact; when the adsorption force of the adsorption plate on the roof is reduced, the electromagnet is used as a temporary fixation to prevent the device from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the L-shaped member, the mounting shell and the fixing frame of the present invention.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the fixing frame, the identification element and the motor of the present invention.

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing member, the suction cup shell and the pull rod of the present invention.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the ball joint shell, the fixing member and the suction cup shell of the present invention.

[0020] Figure 6 It is a three-dimensional structural cross-sectional view of the suction cup shell and the suction cup of the present invention.

[0021] Figure 7 The present invention is attached Figure 6 Enlarged view of point A in the middle.

[0022] Figure 8 It is a three-dimensional structural cross-sectional view of the pull rod, the shift rod and the limiter of the present invention.

[0023] Fig. 9 It is a schematic diagram of the three-dimensional structure of the suction cup shell, the suction cup and the limiting member of the present invention.

[0024] Fig.10 The figure is an exploded view of the suction cup shell, the lever and the limiting member of the present invention.

[0025] Names of the numbers in the figure: 1-mounting frame, 101-leg, 2-data processing module, 3-tilt sensor, 4-laser rangefinder, 5-L-shaped part, 6-mounting shell, 7-fixing frame, 8-identification element, 9-motor, 10-electric push rod, 11-seal, 12-ball joint shell, 13-fixing part, 14-suction cup shell, 141-extrusion part, 15-pull rod, 16-push rod, 17-adsorption disk, 171-reinforcement ring, 172-reinforcement strip, 173-liquid storage part, 18-sponge ring, 181-arc through hole, 19-elastic partition, 191-first chamber, 192-second chamber, 20-limiting part, 21-electromagnet, 22-electric contact. DETAILED DESCRIPTION

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] Automatic road surface damage detection device based on AIoT technology, see Figure 1-Figure 3 , including: a mounting frame 1, a plurality of legs 101 are fixedly connected to the mounting frame 1, a fixing component is installed on the legs 101, a data processing module 2 and a tilt sensor 3 are installed on the mounting frame 1, a laser rangefinder 4 is installed on the mounting frame 1 through a bracket, the mounting frame 1 is provided with an adjustment mechanism, the mounting frame 1 is rotatably connected with an L-shaped member 5, the L-shaped member 5 is fixedly connected with a mounting shell 6, a fixing frame 7 is slidably connected in the mounting shell 6, and an identification element 8 is installed in the fixing frame 7; the data processing module 2 is used to judge the cracks and potholes on the road surface according to the data obtained by the identification element 8 during the movement of the mounting frame 1, and to obtain the size of the cracks and potholes in combination with the data of the laser rangefinder 4 and the tilt sensor 3, and the adjustment mechanism is used to adjust the position and angle of the identification element 8 in real time according to the data of the laser rangefinder 4 and the tilt sensor 3 to maintain the coverage range identified by the identification element 8.

[0028] In the above scheme, it is intended to solve the problem that the inspection vehicle tilts when encountering potholes and bumps, causing the camera to be unable to completely cover the entire road surface, resulting in missed inspections; the number of legs 101 can be an even number, and they are symmetrically distributed on the front and rear sides of the mounting frame 1 to provide stable support for the mounting frame 1. The number of legs 101 in this article is four; the data processing module 2 includes a positioning module, an Internet of Things module and a control terminal; there should be a spacing between the laser rangefinder 4 and the tilt sensor 3 in the horizontal direction, so that when the inspection vehicle tilts, the cause and degree of the tilt of the inspection vehicle can be judged according to the change in the distance between the laser rangefinder 4 and the road surface; the number of laser rangefinders 4 can be one located on a single side of the inspection vehicle, or it can be multiple distributed on both sides of the inspection vehicle. Multi-point data is conducive to better judging the situation of the inspection vehicle; the bracket for installing the laser rangefinder 4 can be a foldable bracket to facilitate the storage and transportation of the device; the identification element 8 can be a camera or other element that can capture road conditions; the power source of the device is the inspection vehicle.

[0029] The situations encountered by the inspection vehicle include tilting to the left (right), tilting downward as a whole, and tilting upward as a whole. For example, when the tilt sensor 3 detects that the inspection vehicle is tilting forward (the perspective of this article is based on the following Figure 1 ), and the distance detected by the laser rangefinder 4 becomes shorter, it means that the wheel on the front side of the inspection vehicle encounters a pothole. At this time, the control terminal controls the recognition element 8 to increase in height and swing forward through the adjustment mechanism, so that the recognition range of the recognition element 8 covers the entire road surface again; for example, when the inclination sensor 3 does not detect a tilt, but the distance detected by the laser rangefinder 4 becomes shorter, it means that both wheels on the right side of the inspection vehicle fall into a pothole. At this time, the control terminal controls the recognition element 8 to increase in height through the adjustment mechanism; through the above adjustment, the recognition element 8 is kept able to cover the entire road surface at all times to prevent the road surface from being missed.

[0030] See also Figure 2 and Figure 3 The adjustment mechanism includes: a motor 9, which is installed in the mounting frame 1 near the L-shaped member 5, and the motor 9 and the L-shaped member 5 are driven by gears and gear rings; an electric push rod 10, which is installed in the mounting shell 6, and its telescopic end is fixed to the fixed frame 7; a sealing member 11, which is fixed between the fixed frame 7 and the mounting shell 6.

[0031] In the above scheme, the height and tilt angle of the identification element 8 are adjusted; the seal 11 can be an accordion protective cover to protect the identification element 8 and prevent foreign matter such as dust from entering the identification element 8 and affecting the operation of the identification element 8; the motor 9 is a servo motor, which is used to accurately control the rotation angle of the L-shaped part 5; the output shaft of the motor 9 drives the L-shaped part 5 to rotate through gears and gear rings, and the L-shaped part 5 drives the identification element 8 to swing through the mounting shell 6, and adjusts the tilt angle of the identification element 8 relative to the horizontal plane, so that the identification range of the identification element 8 can cover the road surface again, and the height of the identification element 8 relative to the mounting shell 6 is changed by the extension and retraction of the telescopic end of the electric push rod 10, thereby changing the coverage range of the identification element 8.

[0032] See also Figure 2 and Figure 4-Figure 6 The fixing assembly includes: a ball joint shell 12, fixedly connected to the support leg 101, and the ball joint shell 12 is ball-connected with a fixing part 13; a suction cup shell 14, fixedly connected to the lower side of the fixing part 13, the suction cup shell 14 is slidably connected with a pull rod 15, the pull rod 15 is rotatably connected with a lever 16, and the lower side of the pull rod 15 is fixed with an adsorption disk 17; in the vertical direction, the highest point of the adsorption disk 17 is lower than the lowest point of the adjacent suction cup shell 14.

[0033] In the above scheme, the device is intended to be fixed to the inspection vehicle; the fixing member 13 is composed of two C-shaped members and a number of connecting rods connecting the two; a notch is provided on one side of the ball joint shell 12, the fixing member 13 and the support leg 101, so that the inspection personnel can easily turn the lever 16; the lower side of the suction cup 17 is the suction surface; the lever 16 is initially in a vertical state; the highest point of the suction cup 17 is lower than the lowest point of the adjacent suction cup shell 14, that is, the suction cup 17 is not in contact with the adjacent suction cup shell 14 at the beginning. When the inspection personnel place the device on the roof of the inspection vehicle, the suction cup 17 first contacts the roof, and the suction cup 17 is squeezed and deformed under the action of the gravity of the device. The air between the suction surface and the roof is squeezed out by the deformation of the suction cup 17, so that the suction cup 17 is adsorbed to the roof, and the deformation of the suction cup 17 under gravity is used to provide initial fixation for the device; the support leg 101 and the suction cup shell 14 are ball-jointed, so that the suction cup shell 14 can adapt to the curved surface of different roofs.

[0034] See also Figure 6 , and further includes: a plurality of reinforcement rings 171, which are respectively fixed to adjacent adsorption plates 17, for enhancing the strength of the adsorption plates 17; and a plurality of reinforcement strips 172, which are fixed to adjacent reinforcement strips 172, for connecting adjacent reinforcement strips 172 into a whole.

[0035] The above scheme aims to solve the problem that the adsorption plate 17 softens due to heat during summer inspections, resulting in a decrease in the adsorption force of the adsorption plate 17 on the roof. The adsorption plate 17 can be made of nitrile rubber and silicone rubber, etc., so that the thermal stability of the adsorption plate 17 is good, and the influence of the high temperature in summer on the adsorption force of the adsorption plate 17 is preliminarily reduced; the reinforcement ring 171 and the reinforcement strip 172 are both made of elastic metal materials, and the reinforcement ring 171 and the reinforcement strip 172 can be embedded in the adsorption plate 17 as the "skeleton" of the adsorption plate 17 to provide support for the adsorption plate 17 and prevent the adsorption plate 17 from excessive deformation after being softened by heat; the reinforcement ring 171 and the reinforcement strip 172 on the adsorption plate 17 can be a spider web-like structure to balance the force at each position of the adsorption plate 17.

[0036] See also Figure 5-Figure 7 , and also includes: sponge rings 18, the number of which is equal to the number of legs 101, and are respectively fixed to the positions of adjacent adsorption disks 17 away from their central axis, the adsorption disk 17 is provided with a liquid storage portion 173, and the suction cup shell 14 is provided with an extrusion portion 141, and the extrusion portion 141 is extruded and matched with the adjacent liquid storage portion 173; elastic baffles 19, the number of which is equal to the number of legs 101, and are respectively fixed to the adjacent liquid storage portions 173, the elastic baffles 19 cooperate with the adjacent adsorption disks 17 to form a first chamber 191 and a second chamber 192, the liquid storage portion 173 is provided with an arc-shaped through hole 181 connected to the adjacent first chamber 191, the first chamber 191 is located between the adjacent second chamber 192 and the adjacent arc-shaped through hole 181, and water is stored in the first chamber 191; the second chamber 192 stores a gas with a large thermal expansion coefficient.

[0037] In the above scheme, a water film is provided for the edge where the adsorption plate 17 contacts the roof, so as to improve the sealing performance between the adsorption plate 17 and the roof; the edges of the upper side of the liquid storage part 173 and the lower side of the extrusion part 141 are both arc-shaped inclined surfaces, so that the extrusion part 141 can squeeze the liquid storage part 173 to squeeze the water in the first chamber 191 out through the arc-shaped through hole 181; initially, the inner diameter of the liquid storage part 173 is smaller than the outer diameter of the extrusion part 141, and when the adsorption surface of the adsorption plate 17 is squeezed into a plane, the inner diameter of the liquid storage part 173 increases to be close to the outer diameter of the extrusion part 141; the elastic coefficient of the elastic partition 19 is smaller than the elastic coefficient of the liquid storage part 173, and the thickness of the elastic partition 19 is smaller than that of the liquid storage part 173. The thickness of the remaining positions of the portion 173 enables the gas in the second chamber 192 to preferentially squeeze the elastic partition 19 to deform when it is heated and expanded. When the gas in the second chamber 192 is heated and expanded (i.e., during the summer inspection process), the temperature of the gas in the second chamber 192 continues to rise, and squeezes the elastic partition 19 to deform, continuously squeezing out the water in the first chamber 191; the number of the arc-shaped through holes 181 can be multiple, and the multiple arc-shaped through holes 181 can be in a ring-shaped distribution state, so as to improve the uniformity of the wetting of the sponge ring 18; the gap of the arc-shaped through hole 181 should be small enough so that the water in the first chamber 191 will not flow out through the arc-shaped through hole 181 under the action of its own tension at the beginning.

[0038] When the inspection personnel place the device on the roof, the suction cup shell 14 squeezes the liquid storage part 173 through the extrusion part 141 under the action of gravity, and squeezes a part of the water in the first chamber 191 into the sponge ring 18 through the arc-shaped through hole 181, so that the sponge ring 18 is moistened and the water is transferred to the roof. A circle of water is used at the edge where the adsorption plate 17 contacts the roof. When the adsorption plate 17 is deformed to form a negative pressure, the water is adsorbed into the adsorption plate 17 through the contact surface between the adsorption plate 17 and the roof, and the water is used to fill the tiny gap between the adsorption plate 17 and the roof, so that the adsorption plate 17 and the roof are in closer contact.

[0039] See also Figure 8-Figure 10 , and also includes: limiting members 20, the number of which is equal to the number of the legs 101, which are respectively limited and slidably connected to the adjacent suction cup shells 14, the pull rod 15 is sealed and slidably connected to the adjacent limiting members 20, the lever 16 is extruded and fitted with the adjacent limiting members 20, and a spring is fixed between the pull rod 15 and the adjacent limiting members 20.

[0040] In the above scheme, the purpose is to increase the firmness of the fixation of the device to the roof by the contact between the limit member 20 and the roof; the lower side of the limit member 20 can be made of elastic rubber material to ensure the friction between the limit member 20 and the roof; the vertical distance between the highest point of the suction cup 17 and the lowest point of the suction cup shell 14 is equal to the distance that the limit member 20 can slide relative to the suction cup shell 14.

[0041] See also Figure 8-Figure 10, and also includes: electromagnets 21, the number of which is equal to the number of legs 101, which are respectively limitedly slidably connected in adjacent suction cup shells 14, a tension spring is fixedly connected between the electromagnet 21 and the adjacent suction cup shells 14, two electric contacts 22 are respectively installed on the suction cup shell 14 and the limiting member 20, the electric contacts 22 on the suction cup shell 14 are in contact and cooperation with the electric contacts 22 corresponding to the adjacent limiting member 20, the electromagnet 21 is electrically connected to the two electric contacts 22 on the adjacent limiting member 20, and a torsion spring is fixedly connected between the shift rod 16 and the adjacent pull rod 15; the elastic coefficient of the torsion spring between the shift rod 16 and the adjacent pull rod 15 is greater than the elastic coefficient of the spring between the pull rod 15 and the adjacent limiting member 20.

[0042] In the above scheme, it is intended to use the electromagnet 21 as a temporary fix when the adsorption force of the adsorption plate 17 on the roof is reduced to prevent the device from falling; the electromagnet 21 can be annular, and the electromagnet 21 is located above the adsorption plate 17. When the electromagnet 21 is energized, the electromagnet 21 moves downward under the action of magnetic attraction and contacts with the adsorption plate 17. The adsorption plate 17 is used to separate the electromagnet 21 from the roof to prevent the electromagnet 21 from scratching the roof; the two electrical contacts 22 on the suction cup shell 14 are respectively connected to the positive and negative wiring of the power supply in the inspection vehicle, and the two electrical contacts 22 on the limit member 20 are respectively connected to the positive and negative wiring of the electromagnet 21; at the same time, a schematic module can be set at the end where the device is electrically connected to the inspection vehicle, for example, when the corresponding two sets of electrical contacts 22 are turned on, the light-emitting diode is turned on, and the bright light of the light-emitting diode is used to remind the inspection personnel.

[0043] The specific working process of the above scheme is as follows: when a road inspection is required, the inspector places the device on the roof of the vehicle, the suction cup 17 first contacts the roof of the vehicle and stops moving, and then the suction cup shell 14 continues to move downward under the action of gravity, and the suction cup shell 14 moves downward along the adjacent limit member 20 and moves to the lower limit position (the upper limit position is the attached Figure 8The state in the middle: the middle part of the upper side of the suction cup shell 14 contacts the limiter 20; the lower limit position is that the lower side of the middle part of the suction cup shell 14 contacts the limiter 20). At this time, the highest point of the suction surface of the suction cup 17 and the lowest point of the suction cup shell 14 are located in the same horizontal plane. Then the suction cup 17, the reinforcement ring 171 and the reinforcement strip 172 are first deformed under the gravity of the suction cup shell 14, so that the suction surface of the suction cup 17 fits with the roof. At this time, the suction cup shell 14 contacts the edge of the upper side of the suction cup 17 and stops moving downward. Then the inspection personnel toggle the lever 16 and twist the torsion spring adjacent to the lever 16. The lever 16 uses the limiter 20 as a fulcrum to pull the pull rod 15 upward. Due to the negative pressure between the adsorption surface of the adsorption plate 17 and the roof, the pull rod 15 moves upward while the limit member 20 moves downward relative to the pull rod 15, compressing the spring between the limit member 20 and the pull rod 15, so that the limit member 20 moves to the upper limit position of the suction cup shell 14. At this time, the lower side of the limit member 20 protrudes from the pull rod 15 and fits against the roof. At the same time, the pull rod 15 pulls the middle part of the adsorption plate 17, the reinforcement ring 171 and the reinforcement strip 172 to bend upward, so that a negative pressure vacuum zone is formed between the middle part of the adsorption surface of the adsorption plate 17 and the roof, thereby fixing the device to the roof. At this time, the inspection personnel electrically connect the device to the inspection vehicle, power on the device and start inspection.

[0044] When the adsorption force of the adsorption plate 17 on the roof is reduced, the lever 16 swings and resets under the action of the adjacent torsion spring, and then the limit member 20 moves up under the action of the adjacent spring and moves to the lower limit position of the adsorption cup shell 14. At this time, the corresponding two sets of electrical contacts 22 are in contact, and the electromagnet 21 is energized. The electromagnet 21 moves downward under the action of the magnetic attraction force and stretches its adjacent tension spring. The magnetic attraction between the electromagnet 21 and the roof provides temporary fixation for the device, and then the inspection personnel stop the car in time to re-fix the device.

[0045] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present application, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of this application.

Claims

1. An automatic road surface surface damage detection device based on AIoT technology, characterized in that: include: A mounting frame (1), the mounting frame (1) being fixedly connected to a plurality of legs (101), the legs (101) being mounted with fixing components, the mounting frame (1) being mounted with a data processing module (2) and an inclination sensor (3), the mounting frame (1) being mounted with a laser rangefinder (4) via a bracket, the mounting frame (1) being provided with an adjustment mechanism, the mounting frame (1) being rotatably connected to an L-shaped member (5), the L-shaped member (5) being fixedly connected to a mounting shell (6), a fixing frame (7) being slidably connected inside the mounting shell (6), and an identification element (8) being mounted on the fixing frame (7); The data processing module (2) is used to determine cracks and potholes on the road surface according to the data acquired by the identification element (8) during the movement of the mounting frame (1), and to obtain the sizes of the cracks and potholes in combination with the data of the laser rangefinder (4) and the tilt sensor (3); the adjustment mechanism is used to adjust the position and angle of the identification element (8) in real time according to the data of the laser rangefinder (4) and the tilt sensor (3) to maintain the coverage range identified by the identification element (8).

2. The automatic road pavement surface damage detection device based on AIoT technology according to claim 1 is characterized in that: The adjustment mechanism comprises: A motor (9) is installed in the mounting frame (1) at a position close to the L-shaped member (5), wherein the motor (9) and the L-shaped member (5) are driven by gears and a gear ring; An electric push rod (10) is installed in the installation shell (6), and its telescopic end is fixedly connected to the fixed frame (7); A sealing member (11) is fixedly connected between the fixing frame (7) and the mounting shell (6).

3. The automatic road pavement surface damage detection device based on AIoT technology according to claim 1 is characterized in that: The fixing assembly comprises: A ball joint shell (12) is fixedly connected to the support leg (101), and the ball joint shell (12) is ball-jointed with a fixing member (13); The suction cup shell (14) is fixedly connected to the lower side of the fixing member (13); the suction cup shell (14) is slidably connected to a pull rod (15); the pull rod (15) is rotatably connected to a lever (16); and a suction cup (17) is fixedly connected to the lower side of the pull rod (15).

4. The automatic road surface surface damage detection device based on AIoT technology according to claim 3 is characterized in that In the vertical direction, the highest point of the suction cup (17) is lower than the lowest point of the adjacent suction cup shell (14).

5. The automatic road surface surface damage detection device based on AIoT technology according to claim 3 is characterized in that: include: A plurality of reinforcement rings (171) are respectively fixed to adjacent adsorption plates (17) and are used to enhance the strength of the adsorption plates (17); A plurality of reinforcing strips (172) are fixedly connected to adjacent reinforcing strips (172) and are used to connect the adjacent reinforcing strips (172) into a whole.

6. The automatic road surface surface damage detection device based on AIoT technology according to claim 5 is characterized in that: include: The number of sponge rings (18) is equal to the number of the legs (101), and they are respectively fixed to adjacent adsorption discs (17) at positions away from the central axis thereof, the adsorption disc (17) is provided with a liquid storage portion (173), and the suction cup shell (14) is provided with an extrusion portion (141), and the extrusion portion (141) is extruded and matched with the adjacent liquid storage portion (173); The elastic baffles (19) are equal in number to the number of the legs (101) and are respectively fixedly connected to adjacent liquid storage parts (173). The elastic baffles (19) cooperate with the adjacent adsorption disk (17) to form a first chamber (191) and a second chamber (192). The liquid storage part (173) is provided with an arc-shaped through hole (181) that is connected to the adjacent first chamber (191). The first chamber (191) is located between the adjacent second chamber (192) and the adjacent arc-shaped through hole (181). Water is stored in the first chamber (191).

7. The automatic road surface surface damage detection device based on AIoT technology according to claim 6 is characterized in that: The second chamber (192) contains a gas with a large thermal expansion coefficient.

8. The automatic road surface surface damage detection device based on AIoT technology according to claim 6 is characterized in that: include: The number of the limiting members (20) is equal to the number of the supporting legs (101), and they are respectively connected to the adjacent suction cup shells (14) in a limiting and sliding manner. The pull rod (15) is connected to the adjacent limiting members (20) in a sealing and sliding manner. The shifting rod (16) is pressed and fitted with the adjacent limiting members (20). A spring is fixed between the pull rod (15) and the adjacent limiting members (20).

9. The automatic road surface surface damage detection device based on AIoT technology according to claim 8 is characterized in that: include: The number of the electromagnets (21) is equal to the number of the legs (101), and they are respectively connected to the adjacent suction cup shells (14) in a limited sliding manner. A tension spring is fixedly connected between the electromagnet (21) and the adjacent suction cup shells (14). Two electric contacts (22) are respectively installed on the suction cup shell (14) and the limiting member (20). The electric contacts (22) on the suction cup shell (14) are in contact with the electric contacts (22) corresponding to the adjacent limiting member (20). The electromagnet (21) is electrically connected to the two electric contacts (22) on the adjacent limiting member (20). A torsion spring is fixedly connected between the shifting rod (16) and the adjacent pulling rod (15).

10. The automatic road pavement surface damage detection device based on AIoT technology according to claim 9 is characterized in that: The elastic coefficient of the torsion spring between the shifting rod (16) and the adjacent pull rod (15) is greater than the elastic coefficient of the spring between the pull rod (15) and the adjacent limit member (20).

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