A drone inspection device for smart roads

Abstract

The present invention relates to the field of road inspection equipment, specifically a drone inspection equipment for smart roads, comprising a frame and fan blades; the fan blades are symmetrically arranged at the four corners of the frame; the device also comprises a clamping unit, a support unit and a power conversion unit; the clamping unit is located at the bottom of the frame, and is used to clamp obstacles after the drone's support unit lands on the road; the support unit is located at the bottom four corners of the frame, and is used to support the drone to land and move on the ground when the obstacle clamped by the drone exceeds its own flight load; the power conversion unit is located inside the frame, and is used to change the drone's fan from horizontal to vertical after the support unit is started. The present invention clamps obstacles on the road through claws; then, driven by the drone, it is taken out of the road; and finally, it is thrown into a temporary storage box on the roadside to be recycled and cleaned, thereby clearing obstacles on the road and improving the cleanliness of the road.

Description

Technical Field

[0001] The present invention relates to the field of road inspection equipment, and specifically to a drone inspection device for smart roads. Background Art

[0002] Smart roads are a new era of roads that use mobile information technology to coordinate and manage the road transport system in a unified manner. They can realize information exchange between vehicles, roads and the environment. Existing smart roads mostly use fixed-point monitoring management with fixed cameras and mobile monitoring management with patrol personnel or inspection equipment. Smart roads use these two monitoring and management methods to complete daily maintenance of smart roads and provide information support for optimizing road conditions.

[0003] Conventional inspection methods mostly involve inspectors driving vehicles to inspect roads, which has low inspection efficiency. With the development of drone technology, more responsive inspection drone equipment has begun to appear. Application No.: CN201510921038.7 discloses an automatic inspection method and device based on drones, which improves road inspection efficiency and reduces the danger during the road inspection process by controlling the drone to automatically inspect the road to be inspected.

[0004] On the road, it is common for vehicles to accidentally drop or discard objects while driving; common examples of objects left behind include: items dropped on the road due to loose tying of trucks, plastic bags and other objects discarded on the road, and even parts dropped by the moving vehicles themselves; in windy weather, plastic bags may be blown onto the windshield of the following vehicles by the strong wind, greatly increasing the safety risk of vehicles in driving; there may also be goods dropped from trucks, parts dropped from moving vehicles, and even the carcasses of small animals that suddenly run into the road and are run over by vehicles, leaving them in the middle of the road; these obstacles may cause the following vehicles to be unable to detect them in time due to the height of the driving angle, resulting in the vehicle being hit. Vehicles may not have time to avoid obstacles, resulting in the chassis of vehicles with lower ground clearance being scratched and damaged; even when vehicles discover these obstacles, they may not have enough time to react to avoid them, causing them to lose control and cause traffic accidents; in the face of these obstacles, most existing road inspection drones detect obstacles through image monitoring and then warn vehicles on the road; finally, the command center uses manual methods to deal with obstacles on the road based on the information returned by the drones, which requires a long waiting time; and as the first drone to discover the obstacle, it does not have the function of clearing the obstacle from the road at the same time, so it can only wait for manual completion of the subsequent clearing work.

[0005] Based on the above problems, the existing technology provides relevant technical inspiration for drones that can clamp objects; Application No.: CN201720123460.2 discloses a mechanical gripper mechanism and a drone, which controls the gripper drive device to drive the gripper to clamp or open at the same time, ensuring that the mechanical gripper mechanism can stably and firmly grasp the object, and prevent the object from falling out of the gripper range of the mechanical gripper mechanism during the flight; however, when the drone clamps an object and when the clamped object exceeds its own flight load, it cannot support the clamped object.

[0006] To this end, a drone inspection device for smart roads is proposed. Summary of the Invention

[0007] The purpose of the present invention is to provide a drone inspection device for smart roads, which solves the problem of road inspection drones handling obstacles on the road and the problem when the obstacles captured by the road inspection drones exceed their own flight load.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A drone inspection device for smart roads, comprising a frame and fan blades; the frame is a rectangular structure; the frame has a length of 550-800 mm, a width of 350-500 mm, and a height of 250-400 mm; the fan blades are symmetrically arranged at the four corners of the frame;

[0010] It also includes a clamping unit, a support unit and a power conversion unit; the clamping unit is located at the bottom of the frame, and is used to clamp obstacles on the road after the support unit of the drone falls on the road; the support unit is located at the four corners of the bottom of the frame, and is used to support the movement of the drone landing on the ground when the drone clamping exceeds its own flight load; the power conversion unit is located inside the frame, and is used to change the fan of the drone from horizontal to vertical placement after the support unit is started.

[0011] An LED light strip is fixedly installed on the side of the frame; the LED light strip is used to warn vehicles behind on the road at night.

[0012] The clamping unit includes a housing, a driving rod, a transmission rod, a clamping claw, a lifting rod, and a restraining assembly; the housing is a columnar structure; the housing is arranged at the bottom of the frame; a plurality of driving rods are arranged in a circular array around the central axis of the housing; one end of the driving rod is hinged to the side wall of the housing; the other end of the driving rod is hinged to one end of the transmission rod; the driving rod is an electric push rod; the thrust of the driving rod is 250N; the other end of the transmission rod is hinged to the clamping claw;

[0013] The lifting rod is coaxially arranged inside the shell; a camera is arranged at the bottom of the shell; the lifting rod is an electric push rod with a stroke of 200-300mm; the constraint assembly is a Y-shaped structure; a plurality of constraint assemblies are arranged in a circular array around the central axis of the lifting rod; the number of constraint assemblies is equal to the number of driving rods; both ends of the constraint assembly are rotatably connected to the transmission rod and the clamp, and the swing angle of the clamp can be controlled by controlling the transmission rod and the clamp.

[0014] The constraint assembly includes a No. 1 connecting rod and a No. 2 connecting rod; one end of the No. 1 connecting rod is hinged to the movable end of the lifting rod; the other end of the No. 1 connecting rod is hinged to the middle of the transmission rod; a sliding groove is provided in the middle of the No. 1 connecting rod; one end of the No. 2 connecting rod is hinged to the No. 1 connecting rod through the sliding groove; one end of the No. 2 connecting rod slides along the groove direction of the sliding groove; the other end of the No. 2 connecting rod is hinged to the middle of the clamping claw.

[0015] The hinge point between the No. 1 connecting rod and the No. 2 connecting rod is located at one quarter to one third of the hinge end between the No. 2 connecting rod and the driving rod.

[0016] The clamping side of the clamping jaw is provided with clamping strips in an array along the length direction; the length of the clamping strips is equal to the width of the clamping jaw.

[0017] The clamping strip is made of nitrile rubber.

[0018] Suction cups are provided on the left and right sides of the clamping side of the clamping claw along the length direction; the suction cups are made of natural rubber.

[0019] The support unit includes an electric push rod and a chassis wheel;

[0020] The electric push rod is fixedly mounted on the bottom of the frame; the movable end of the electric push rod is sleeved with a slide rod;

[0021] The chassis wheel consists of an electric telescopic rod at the top and a roller at the bottom; the electric push rod is fixedly connected to the top of the electric telescopic rod through the sliding rod; the inner wall of the frame is provided with an arc groove at the hinge between the electric push rod and the electric telescopic rod; the two ends of the sliding rod slide in the arc groove; the middle part of the electric telescopic rod is hinged to the inner wall of the frame; the thrust of the electric push rod is 250N; the stroke of the electric telescopic rod is 100-200mm.

[0022] The power conversion unit includes a first rotating shaft, a second rotating shaft and a rotating motor;

[0023] The first rotating shaft is arranged symmetrically along the central axis of the frame; the central axis of the first rotating shaft is parallel to the central axis of the frame;

[0024] A spur gear is fixedly provided on the top of the first rotating shaft; two driving bevel gears are fixedly provided in an array along the central axis of the first rotating shaft;

[0025] The second rotating shaft is arranged to rotate horizontally along the vertical direction of the central axis of the frame; one end of the second rotating shaft is fixedly connected to the bottom side wall of the fan blade; the other end of the second rotating shaft is fixedly connected to the driven bevel gear; the other end of the second rotating shaft passes through the frame and is rotatably connected to the first rotating shaft through the engagement of the driving bevel gear and the driven bevel gear;

[0026] The rotating motor is symmetrically arranged inside the rear end of the frame; the output end of the rotating motor is engaged with the spur gear of the first rotating shaft through a driving gear; the rotating motor is used to rotate the second rotating shaft by rotating the first rotating shaft, thereby rotating the fan blades.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention can be used for road inspection work, and can perform round-trip inspection flights along the road route in the air. While performing road inspection, the present invention can also clear obstacles encountered on the road, such as goods that have fallen from trucks due to loose binding or even parts that have fallen from cars while they are driving. When clearing obstacles, the present invention uses the claws of the clamping unit to clamp the obstacles on the road; then, driven by the flying force of the drone, it carries the obstacles out of the road range; finally, it throws them into a temporary storage box on the roadside to wait for professional recovery and cleaning, so that the obstacles on the road will not damage the chassis of the moving vehicles, and the cleanliness and safety of the roads are also improved.

[0029] 2. The support unit in the present invention utilizes a slide rail to rotate around the middle of the support leg, effectively saving the rotation space of the slide rail, thereby improving the space utilization inside the frame; at the same time, the support unit enables the drone to drag obstacles on the ground when the flight load capacity is insufficient to drag obstacles, thereby greatly improving the efficiency of the drone in handling obstacles.

[0030] 3. The power conversion component in the present invention is driven by the rotating motor and uses the bevel gear meshing between the No. 1 rotating shaft and the No. 2 rotating shaft to produce a match; thereby, the UAV fan blades rotate around the central axis of the No. 2 rotating shaft. At this time, the vertical upward driving force provided by the fan blades can be converted into a horizontal forward driving force; at the same time, it can make it unnecessary to add an additional power control component for the chassis wheel inside the equipment, thereby saving space inside the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the present invention in flight state;

[0032] Figure 2 This is a schematic structural diagram of the present invention in a landing state;

[0033] Figure 3 This is a schematic structural diagram of the present invention in a landing form;

[0034] Figure 4 It is a structural schematic diagram of the clamping unit;

[0035] Figure 5 is a top view of the clamping unit;

[0036] Figure 6 is a front view of the clamping unit;

[0037] Figure 7 is a top view of the support unit;

[0038] Figure 8 for Figure 7 AA section view;

[0039] Figure 9 It is a cross-sectional view of the frame at the power conversion unit;

[0040] Figure 10 Schematic diagram of the structure of the gripper.

[0041] In the figure: 1. Frame; 2. Fan blades; 3. Clamping unit; 31. Housing; 32. Drive rod; 33. Transmission rod; 34. Clamping claw; 341. Clamping bar; 35. Lifting rod; 36. Constraint assembly; 361. Connecting rod No. 1; 362. Connecting rod No. 2; 363. Slide groove; 4. Support unit; 41. Electric push rod; 42. Slide rod; 43. Base wheel; 44. Arc groove; 5. Power conversion unit; 51. Rotating shaft No. 1; 52. Rotating shaft No. 2; 53. Rotating motor. DETAILED DESCRIPTION

[0042] Figures 1 to 10 The first embodiment of a drone inspection device for smart roads according to the present invention is shown. This embodiment is suitable for grabbing obstacles with a mass of less than 5 kg.

[0043] The present invention will be described in detail below with reference to the accompanying drawings. Figures 1 to 3 , reference numerals 1 to 4 together constitute the entire drone inspection device of the present invention. The drone inspection device of the present invention can be used in the field of road inspection, especially in the road inspection of smart roads. The drone inspection device of the present invention can be manufactured by various methods, preferably by molding using plastic materials. However, the drone inspection device of the present invention can also be manufactured using other materials and processes, such as carbon fiber composite materials with light weight and high strength.

[0044] The specific structure of the drone inspection device in the above embodiment is as follows: it includes a frame 1 and fan blades 2; the frame 1 is a rectangular structure; the frame 1 is 350 mm long, 250 mm wide, and 180 mm high; the fan blades 2 are symmetrically arranged at the four corners of the frame 1;

[0045] The frame 1 also includes a clamping unit 3, a support unit 4, and a power conversion unit 5. The clamping unit 3 is located at the bottom of the frame 1 and is used to clamp obstacles on the road after the support unit 4 of the drone lands on the road. On the road, vehicles ahead often leave behind parts such as bumpers or discard objects such as plastic bags, or encounter cargo dropped from trucks. At this time, vehicles behind these obstacles may not be able to detect them in time, resulting in the chassis of the vehicles being scratched. Even when a high-speed vehicle runs over these obstacles, the vehicle's tires may lift off the ground. In serious cases, it may even cause the vehicle to roll over, affecting its safe driving.

[0046] Drones can be used to move these obstacles to the roadside so that they do not affect the movement of vehicles on the road. In addition, when encountering large obstacles, drones can be connected to the smart road network to warn following vehicles from a distance to avoid them. This can especially reduce the probability of vehicle accidents when encountering large obstacles at road corners and blind spots. At the same time, the speed and convenience of drones can also improve the speed and focus of smart road information updates.

[0047] The support units 4 in this embodiment are located at the four corners of the bottom of the frame 1. They are used to support the drone's landing movement when the drone is carrying a load that exceeds its own flight load. Compared to dragging a large obstacle in the air, the support units 4 can enable the drone to travel on land. The force required to drag an obstacle on the ground is less than the force required to drive the obstacle in flight. Therefore, dragging an obstacle on the ground by the drone is more energy-efficient.

[0048] In order to simplify the power system inside the drone in this embodiment, a power conversion unit 5 is provided inside the frame 1, which is used to change the fan of the drone from a horizontal position to a vertical position after the support unit 4 is started; thereby greatly reducing the commuting distance of the drone and weakening the transmission rate of the smart road information.

[0049] In a preferred embodiment of the present invention, in order to prevent the drone from being hit by passing vehicles and causing damage to the drone when working at night, an LED light strip is fixedly installed on the side of the frame 1; the LED light strip can warn vehicles behind the road at night; so that when the drone is working at night, the LED light strip will give the driver behind the driver an obvious prompt at night, and no strong light will be irradiated to the driver of the vehicle behind; it can prevent the drone from being damaged by the vehicle, and also prevent the use of strong light sources from affecting the driver's vision on the road.

[0050] See also Figures 4 to 6 In a preferred embodiment of the present invention, the clamping unit 3 includes a housing 31, a driving rod 32, a transmission rod 33, a clamping claw 34, a lifting rod 35, and a restraining assembly 36; the housing 31 is a columnar structure; the housing 31 is arranged at the bottom of the frame 1; a plurality of driving rods 32 are arranged in a circular array around the central axis of the housing 31; one end of the driving rod 32 is hinged to the side wall of the housing 31; the other end of the driving rod 32 is hinged to one end of the transmission rod 33; the driving rod 32 is an electric push rod; the thrust of the driving rod 32 is 250N; the other end of the transmission rod 33 is hinged to the clamping claw 34;

[0051] The lifting rod 35 is coaxially arranged inside the housing 31; a camera is provided at the bottom of the housing 31; the lifting rod 35 is an electric push rod, and the stroke of the lifting rod 35 is 100 mm; the restraining assembly 36 in this embodiment preferably has a Y-shaped structure; a plurality of restraining assemblies 36 are arranged in a circular array around the central axis of the lifting rod 35; the number of restraining assemblies 36 is equal to the number of driving rods 32; the two ends of the restraining assembly 36 are rotatably connected to the transmission rod 33 and the clamping jaw 34, and the swing angle of the clamping jaw 34 can be controlled by controlling the transmission rod 33 and the clamping jaw 34;

[0052] When the drone routinely inspects the road section it is responsible for, when the drone observes an obstacle on the road through the camera; the drone flies 100-150mm above the obstacle, and then the drone slowly falls above the obstacle; at this time, the driving rod 32 contracts and drives the clamping claws 34 to open outward through the transmission rod 33, so that the space between the clamping claws 34 on both sides becomes larger; then the lifting rod 35 extends downward so that the bottom of the lifting rod 35 contacts the obstacle, after which the driving rod 32 extends and drives the clamping claws 34 to rotate inward through the transmission rod 33, so that the space between the clamping claws 34 on both sides becomes smaller and clamps the obstacle, and then the lifting rod 35 contracts upward to make the obstacle leave the ground; then the drone flies above the temporary storage station on the roadside, and at this time the clamping claws 34 are controlled to open again so that the obstacle falls into the temporary storage station set up on the roadside and waits for unified recycling and processing.

[0053] To control the angle of the clamping jaws 34, see Figure 6In a preferred embodiment of the present invention, the specific structure of the restraint assembly 36 is as follows: it includes a No. 1 connecting rod 361 and a No. 2 connecting rod 362; one end of the No. 1 connecting rod 361 is hinged to the movable end of the lifting rod 35; the other end of the No. 1 connecting rod 361 is hinged to the middle part of the transmission rod 33; a sliding groove 363 is provided in the middle part of the No. 1 connecting rod 361; one end of the No. 2 connecting rod 362 is hinged to the No. 1 connecting rod 361 through the sliding groove 363; one end of the No. 2 connecting rod 362 slides along the groove direction of the sliding groove 363; the other end of the No. 2 connecting rod 362 is hinged to the middle part of the clamping claw 34;

[0054] As shown in the above embodiment, when the driving rod 32 contracts, one end of the No. 2 connecting rod 362 slides outward in the sliding groove 363 opened in the middle of the No. 1 connecting rod 361, thereby driving the clamping claw 34 to expand; when the driving rod 32 extends, one end of the No. 2 connecting rod 362 slides inward in the sliding groove 363 opened in the middle of the No. 1 connecting rod 361, thereby driving the clamping claw 34 to contract.

[0055] In a preferred embodiment of the present invention, in order to improve the clamping efficiency of the clamping unit 3 in handling obstacles, the hinge point of the No. 1 connecting rod 361 and the No. 2 connecting rod 362 is located at one-third of the hinge end of the No. 2 connecting rod 362 and the driving rod 32; since the middle part of the No. 1 connecting rod 361 and the No. 2 connecting rod 362 is hinged; therefore, the No. 2 connecting rod 362 rotates around the hinge point; and a larger obstacle may be required during the clamping process, the hinge point is arranged at one-third of the hinge end of the No. 2 connecting rod 362 and the driving rod 32, which can increase the rotation arc length of one end of the hinged clamp 34 of the No. 2 connecting rod 362, thereby increasing the rotation arc length of the clamp 34, that is, increasing the maximum clamping volume of the clamp 34 unit for clamping obstacles.

[0056] In a preferred embodiment of the present invention, in order to prevent the clamping jaws from slipping when encountering an object with a smooth surface, clamping bars 341 are arranged in an array along the length direction on the clamping side of the clamping jaw 34; the length of the clamping bars 341 is equal to the width of the clamping jaw 34; the clamping bars 341 will reduce the contact area between the clamping jaw 34 and the object, thereby increasing the normal pressure of the contact surface, and thus having a stronger clamping friction force.

[0057] The clamping strip 341 is preferably made of nitrile rubber; in order to enable the clamping jaw 34 to clamp obstacles with liquid without causing rust on the clamping jaw 34; and the use of nitrile rubber can make the clamping strip 341 have better wear resistance. Due to its own partial deformation ability, it can deform when clamping an object, making the clamping more stable.

[0058] like Figures 7-8As shown, the support unit 4 includes an electric push rod 41 and a chassis wheel 43; the electric push rod 41 is fixedly mounted on the bottom of the frame 1; a sliding rod 42 is provided on the movable end of the electric push rod 41; the chassis wheel 43 consists of an electric telescopic rod at the top and a roller at the bottom; the electric push rod 41 is fixedly connected to the top of the electric telescopic rod through the sliding rod 42; an arc groove 44 is provided on the inner wall of the frame 1 at the hinge between the electric push rod 41 and the electric telescopic rod; both ends of the sliding rod 42 slide in the arc groove 44; the middle part of the electric telescopic rod is hinged to the inner wall of the frame 1; the thrust of the preferred electric push rod 41 is 250N; the stroke of the electric telescopic rod is 100mm; the electric push rod has a more agile response speed than other push rods such as hydraulic rods;

[0059] In this preferred embodiment, the efficiency of the drone in handling obstacles is enhanced, thereby greatly increasing the weight of obstacles that the drone can handle; Figure 2 This is a schematic diagram of the UAV structure after the support unit 4 changes and combined with Figure 8 When the obstacle held by the drone exceeds its own flight load, the electric push rod 41 extends to drive the sliding rod 42 to slide in the sliding groove; and because the middle part of the chassis wheel 43 is hinged to the frame 1, the chassis wheel 43 rotates around the hinge point to a vertical state under the drive of the electric push rod 41; at this time, the telescopic rod inside the chassis wheel 43 extends, so that the roller at the bottom of the chassis wheel 43 contacts the ground; because the force required to drive the obstacle to fly exceeds the force required to drag the obstacle on the ground; therefore, the efficiency of the drone in handling obstacles can be improved; and the chassis wheel 43 rotates around its central axis, so that the rotation space required is smaller and the movement is more flexible.

[0060] In order to eliminate the need for a drive motor to be installed on the chassis wheel 43 of the drone, thereby improving energy utilization efficiency, a power conversion unit 5 is provided inside the frame 1, which is used to change the drone's fan from a horizontal position to a vertical position after the support unit 4 is activated. As a preferred embodiment of the present invention, the power conversion unit 5 includes a first rotating shaft 51, a second rotating shaft 52 and a rotating motor 53. The first rotating shaft 51 is arranged symmetrically along the central axis of the frame 1; the central axis of the first rotating shaft 51 is parallel to the central axis of the frame 1; a spur gear is fixedly provided on the top of the first rotating shaft 51; and two active bevel gears are fixedly provided in an array along the central axis of the first rotating shaft 51.

[0061] The second rotating shaft 52 is arranged to rotate horizontally along the vertical direction of the central axis of the frame 1; one end of the second rotating shaft 52 is fixedly connected to the bottom side wall of the fan blade 2; the other end of the second rotating shaft 52 is fixedly connected to the driven bevel gear; the other end of the second rotating shaft 52 passes through the frame 1, and is rotationally connected to the first rotating shaft 51 through the engagement of the driving bevel gear and the driven bevel gear; a rotating motor 53 is symmetrically arranged inside the rear end of the frame 1; the output end of the rotating motor 53 is engaged with the spur gear of the first rotating shaft 51 through the driving gear; the rotating motor 53 is used to rotate the second rotating shaft 52 by rotating the first rotating shaft 51, thereby rotating the fan blade 2;

[0062] Figure 3 This is a schematic diagram of the UAV structure after the power conversion unit 5 completes its work; Figure 9 , the rotating motor 53 rotates and drives the spur gear to rotate through the driving gear, thereby driving the No. 1 rotating shaft 51 to rotate; through the rotation of the No. 1 rotating shaft 51, the active bevel gear fixedly connected to the No. 1 rotating shaft 51 rotates and drives the driven bevel gear to rotate, so that the No. 2 rotating shaft 52 rotates and drives the fan blades 2 to rotate; thus completing the movement process of the fan blades 2 from horizontal to vertical; the rotation of the fan blades 2 can provide the drone with forward power when driving on the ground, so that the drone no longer needs to install a drive motor at the chassis wheel 43, thereby improving the energy utilization efficiency.

[0063] The present invention has a second embodiment. To better grasp heavier objects, suction cups are provided on the left and right sides of the gripping side of the gripping jaw 34 along its length. When encountering an obstacle with smooth side walls, the suction cups on the gripping side of the gripping jaw 34 can adhere to the side walls of the obstacle, preventing the obstacle from shaking during the flight of the road inspection drone. Compared with the method of using the clamping bar 341, this method has better clamping stability when gripping heavier objects.

[0064] When clamping, the driving rod 32 first extends, so that the suction cup on the clamping claw 34 is pressed against the surface of the obstacle, and then the suction cup discharges the space inside the suction cup due to the thrust, so that the obstacle is adsorbed on the clamping claw 34; when the road inspection drone flies over the temporary storage box on the roadside, the driving rod 32 contracts, causing the suction cup to move away from the obstacle; with the help of pulling force, the suction cup is pulled apart from the obstacle, so that the obstacle falls; in order to ensure the adsorption effect and high deformation effect of the suction cup, the suction cup is made of preferred natural rubber material.

[0065] In the above embodiment, the length of the frame 1 is 800 mm, the width is 450 mm, and the height is 350 mm; the thrust of the drive rod 32 is 250 N; the stroke of the lifting rod 35 is 200 mm; and the thrust of the electric push rod 41 is 250 N. The above embodiment is suitable for grabbing obstacles with a mass of 6-15 kg.

[0066] Working principle: When a drone encounters an obstacle during flight, it will connect to the command center of the smart road, so that the vehicles behind this lane can avoid the roadblock in time after learning the roadblock information to avoid unnecessary accidents and collisions; then the drone will use the camera at the bottom to analyze the obstacle. When the obstacle is within its own grasping size range, the drone will start to hover above the obstacle, and then the drive rod 32 will retract, and the clamping claw 34 will be driven to expand under the action of the constraint component 36; then the drone will descend to a height of 50-80mm. When the clamping claw 34 contacts the bottom of the object, the drive rod 32 will extend, and the clamping claw 34 will be driven to retract under the action of the constraint component 36, thereby completing the clamping of the object.

[0067] When the object clamped by the drone exceeds 1.5-2 times its own flight load, the drone's electric push rod 41 begins to contract, driving the drone's chassis wheel 43, which is hinged at its mobile end, to rotate; since the middle part of the chassis wheel 43 is hinged to the frame 1, the chassis wheel 43 rotates around its own middle part; then the chassis wheel 43 begins to extend until it touches the ground; at this time, the weight of the obstacle that the drone can clamp increases greatly.

[0068] Then the rotating motor 53 inside the drone rotates, and the engagement of the driving gear and the spur gear drives the No. 1 rotating shaft 51 to rotate; and because the active bevel gear fixedly connected to the No. 1 rotating shaft 51 is engaged with the driven bevel gear fixedly connected to the No. 2 rotating shaft 52, the No. 2 rotating shaft 52 rotates around its own central axis; thereby driving the fan blade 2 fixedly connected to the free end of the No. 2 rotating shaft 52 to start rotating, so that it changes from a horizontal placement to a vertical placement.

[0069] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drone inspection device for smart roads, comprising a frame (1) and fan blades (2); the frame (1) is a rectangular structure; the fan blades (2) are symmetrically arranged at the four corners of the frame (1); and the characteristics are: The drone also includes a clamping unit (3), a support unit (4) and a power conversion unit (5); the clamping unit (3) is located at the bottom of the frame (1) and is used to clamp obstacles on the road after the support unit (4) of the drone lands on the road; the support unit (4) is located at the four corners of the bottom of the frame (1) and is used to support the drone to land on the ground and move when the obstacle clamped by the drone exceeds its own flight load; the power conversion unit (5) is located inside the frame (1) and is used to change the fan of the drone from a horizontal position to a vertical position after the support unit (4) is started; The clamping unit (3) comprises a housing (31), a driving rod (32), a transmission rod (33), a clamping claw (34), a lifting rod (35) and a restraining assembly (36); The housing (31) is a columnar structure; the housing (31) is arranged at the bottom of the frame (1); A plurality of driving rods (32) are arranged in a circular array around the central axis of the housing (31); one end of the driving rod (32) is hinged to the side wall of the housing (31); the other end of the driving rod (32) is hinged to one end of the transmission rod (33); the other end of the transmission rod (33) is hinged to the clamping claw (34); The lifting rod (35) is coaxially arranged inside the housing (31); a camera is arranged at the bottom of the housing (31); The constraint assembly (36) is a Y-shaped structure; a plurality of the constraint assemblies (36) are arranged in a circular array around the central axis of the lifting rod (35); the number of the constraint assemblies (36) is equal to the number of the driving rods (32); the two ends of the constraint assembly (36) are rotatably connected to the transmission rod (33) and the clamping claw (34), and the swing angle of the clamping claw (34) can be controlled by controlling the transmission rod (33) and the clamping claw (34); The constraint assembly (36) includes a No. 1 connecting rod (361) and a No. 2 connecting rod (362); one end of the No. 1 connecting rod (361) is hinged to the movable end of the lifting rod (35); the other end of the No. 1 connecting rod (361) is hinged to the middle of the transmission rod (33); a sliding groove (363) is provided in the middle of the No. 1 connecting rod (361); one end of the No. 2 connecting rod (362) is hinged to the No. 1 connecting rod (361) through the sliding groove (363); one end of the No. 2 connecting rod (362) slides along the groove direction of the sliding groove (363); the other end of the No. 2 connecting rod (362) is hinged to the middle of the clamping claw (34); The support unit (4) includes an electric push rod (41) and a chassis wheel (43); The electric push rod (41) is fixedly mounted on the bottom of the frame (1); the movable end of the electric push rod (41) is sleeved with a slide rod (42); The chassis wheel (43) is composed of an electric telescopic rod at the top and a roller at the bottom; the electric push rod (41) is fixedly connected to the top of the electric telescopic rod through the slide rod (42); the inner wall of the frame (1) is provided with an arc groove (44) at the hinge between the electric push rod (41) and the electric telescopic rod; the two ends of the slide rod (42) slide in the arc groove (44); the middle part of the electric telescopic rod is hinged to the inner wall of the frame (1).

2. The drone inspection device for smart roads according to claim 1 is characterized in that: An LED light strip is fixedly mounted on the side of the frame (1).

3. The drone inspection device for smart roads according to claim 1 is characterized in that: The clamping side of the clamping jaw (34) is provided with clamping strips (341) in an array along the length direction.

4. The drone inspection device for smart roads according to claim 3 is characterized by: The clamping strip (341) is made of nitrile rubber.

5. The drone inspection device for smart roads according to claim 1 is characterized in that: Suction cups are arranged in an array along the length direction on the left and right sides of the clamping side of the clamping claw (34).

6. The drone inspection device for smart roads according to claim 4 is characterized in that: The hinge point between the No. 1 connecting rod (361) and the No. 2 connecting rod (362) is located at one quarter to one third of the hinge end between the No. 2 connecting rod (362) and the driving rod (32).

7. The drone inspection device for smart roads according to claim 1 is characterized in that: The power conversion unit (5) includes a first rotating shaft (51), a second rotating shaft (52) and a rotating motor (53); The first rotating shaft (51) is arranged symmetrically along the central axis of the frame (1); the central axis of the first rotating shaft (51) is parallel to the central axis of the frame (1); A spur gear is fixedly provided on the top of the first rotating shaft (51); two driving bevel gears are fixedly provided in an array along the central axis of the first rotating shaft (51); The second rotating shaft (52) is arranged to rotate horizontally along the vertical direction of the central axis of the frame (1); one end of the second rotating shaft (52) is fixedly connected to the bottom side wall of the fan blade (2); the other end of the second rotating shaft (52) is fixedly connected to the driven bevel gear; the other end of the second rotating shaft (52) passes through the frame (1) and is rotationally connected to the first rotating shaft (51) through the engagement of the driving bevel gear and the driven bevel gear; The rotating motor (53) is symmetrically arranged inside the rear end of the frame (1); the output end of the rotating motor (53) is meshed with the spur gear of the first rotating shaft (51) through a driving gear.

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