Unmanned aerial vehicle device for land inspection

Abstract

The invention provides an unmanned aerial vehicle device for land inspection, and relates to the technical field of inspection unmanned aerial vehicle equipment, the unmanned aerial vehicle device comprises an inspection assembly, a balance assembly and a damping assembly, the inspection assembly comprises an unmanned aerial vehicle body and a camera, the unmanned aerial vehicle body is provided with a flight assembly, and the flight assembly comprises a supporting rod and a propeller; an adjusting assembly is installed on the camera, the adjusting assembly comprises a first motor and a second motor, a stabilizing mechanism is installed on the supporting rod, and the stabilizing mechanism comprises an electric hydraulic rod; the balance assembly comprises a sealing cover and a button, and a rotating assembly is installed in the sealing cover. According to the unmanned aerial vehicle device for land inspection, the access state monitoring of each tool is realized, the problems of missed recording, wrong recording, disordered taking, disordered use and the like are greatly reduced, and the unmanned aerial vehicle device is suitable for rapid inspection work of land.

Description

Technical Field

[0001] This disclosure relates to the field of inspection drone equipment technology, and more particularly to a drone device for land inspection. Background Technology

[0002] To ensure the safety of farmland, forest farms, gardens, parks, roads, and other facilities on the land, it is often necessary to conduct inspections of these facilities. To improve inspection efficiency, it is necessary to use inspection drones.

[0003] Patent application CN201810448086.2 discloses a monitoring and inspection drone. This novel drone combines multiple functions, overcoming the inconvenience caused by the complex structure of current monitoring and inspection drones. The invention incorporates wind direction and speed sensors on the top of the fuselage, facilitating the transmission of detection information to the main controller. Combined with a light sensor, it provides insights into weather conditions, enabling timely countermeasures. Furthermore, the light sensor helps determine sunlight levels; if sunlight is insufficient, a light can be activated during takeoff and landing to prevent difficulties in determining the landing location. The casing is symmetrically equipped with drive shafts and blades connected to the actuators on the front, back, left, and right sides. An angular velocity sensor is located in the cavity of the balance bar, facilitating the transmission of angle information to the main controller via an A / D converter. The main controller then transmits the information wirelessly to the control display module for operation. A balance plate is located at the bottom of the casing, with a camera at its center via a rotating disk and an electric telescopic rod. The camera captures image information and transmits it to the plant disease detection unit for disease assessment. An electrical charge detection unit detects electrical charge and transmits it to the main controller, which then displays it on the control display module via wireless transmission for user convenience. To facilitate smooth landing, the device monitors the battery level and makes informed decisions. Additionally, curved shock-absorbing plates are mounted on both sides of the bottom of the balance plate via support pillars. A weight plate is located on one side of the bottom of each curved shock-absorbing plate, ensuring a stable landing and reducing the possibility of forward tilting or tipping over. Patent application CN202211260611.0 discloses a drone for power grid inspection. It features two support rods with balancing mechanisms installed between them and the bottom walls on both sides of the drone body. This allows the support rods to adaptively press against hard objects on the bottom surface when the drone lands, causing a slight tilting and offset, ensuring a smooth landing. The invention improves the stability and smoothness of the inspection drone during landing, solving the problem of tilting and tipping during landing. The support mechanism consists of multiple sets of adjacent balance blocks, with guide sleeves between adjacent balance blocks. The balance blocks are cylindrical and made of rubber. The balance blocks can move up and down to cushion the impact. When the landing surface of the inspection drone is uneven, the balance blocks can adaptively cushion the impact. The balance blocks can move downwards when there are hard objects on the bottom or pits on the bottom, ensuring the contact area with the landing surface and improving the stability and safety of the inspection drone during landing.

[0004] According to its publicly available technical solutions, existing inspection drone equipment has several drawbacks during use. First, it is prone to tilting due to gusts of wind, which alters the direction of propeller lift, leading to flight instability and compromising flight safety. Second, vibrations during flight can cause the flight balancing mechanism to be erroneously triggered, compromising flight stability. Third, while existing damping structures are used to prevent erroneous triggering of the flight balancing mechanism due to vibrations, the long movement time of the damping structure can prevent the drone from timely adjusting its balance, further compromising flight safety. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, the purpose of this disclosure is to provide a device for land inspection drones.

[0007] To achieve the above objectives, this disclosure provides a land inspection drone device, characterized in that it comprises: an inspection component, a balancing component, and a damping component. The inspection component includes a drone body and a camera. A flight component is mounted on the drone body, the flight component includes a support rod and a propeller. An adjustment component is mounted on the camera, the adjustment component includes a first motor and a second motor. A stabilizing mechanism is mounted on the support rod, the stabilizing mechanism including an electro-hydraulic rod. The balancing component includes a cover and a button. A rotating component is mounted inside the cover, the rotating component includes a third motor and a circular plate. A guide component is mounted on the cover, the guide component including a sliding sleeve and a retaining sleeve. The damping component includes a connecting pipe and a through cavity. A connecting component is provided on the through cavity, the connecting component including a connecting port and a side cavity. A movable component is provided on the through cavity, the movable component including a piston and a slider.

[0008] Optionally, the bottom of the drone body is bolted with a support leg, one end of the support rod is installed on the inside of the drone body, the support rod is installed on the side wall of the drone body through a pivot, the other end of the support rod passes through the inside of the drone body and extends to the outside of the drone body, the propeller is bolted to the other end of the support rod, and the propeller is evenly distributed on the outside of the drone body.

[0009] Optionally, a battery is bolted to the inner wall of the bottom of the drone body, the bottom end of the electro-hydraulic rod is mounted on the top of the battery via a pivot, and the top end of the electro-hydraulic rod is connected to one end of the support rod via a pivot.

[0010] Optionally, the inner side of the drone body is provided with an inner groove, the first motor is installed on the inner side of the inner groove by bolts, a bracket is installed on the inner side of the inner groove, the top of the bracket is keyed to the output shaft of the first motor, the second motor is installed on the inner side of the bottom of the bracket by bolts, one side of the camera is keyed to the output shaft of the second motor, the other side of the camera is installed on the inner wall of the bottom of the bracket by a rotating shaft, and the bottom of the camera passes through the inner groove and extends to the bottom of the drone body.

[0011] Optionally, a control circuit is bolted to the inside of the drone body, an antenna is bolted to the inner wall of the top of the drone body, a locator is bolted to the top of the drone body, the battery is connected to the control circuit via wires, and the control circuit is connected to the propeller, electro-hydraulic rod, motor one, motor two, antenna, locator, motor three, and button via wires.

[0012] Optionally, the ferrule is welded to the inner wall of the drone body, the sliding sleeve is welded to the top of the cover, the sliding sleeve is clipped inside the ferrule, the spring is located inside the sliding sleeve, and the top of the cover is connected to the inner wall of the drone body through the spring.

[0013] Optionally, the motor three is bolted to the inner wall of the top of the cover, the center of the circular plate is welded to the output shaft of the motor three, and the inside of the cover is a vacuum.

[0014] Optionally, the connecting pipe is located at the bottom of the side wall of the drone body, the through cavity is located at the top of the side wall of the drone body, the connecting port is located on the side wall of the drone body, both ends of the through cavity are connected to one end of the connecting pipe through the connecting port, and the other end of the connecting pipe passes through the side wall of the drone body and is connected to the inside of the ferrule.

[0015] Optionally, the outer side of the piston is engaged with the inner wall of the through cavity, the side cavity is opened at the top of the side wall of the unmanned aircraft, the outer side of the slider is engaged with the inner wall of the side cavity, and both ends of the piston are connected to the slider through connecting rods.

[0016] Optionally, one end of the slider is connected to the inner wall of one end of the side cavity via a spring, and a fine hole is provided on the inner side of the side wall of the unmanned aircraft body. The two ends of the two side cavities are connected to each other through the fine hole. The inner sides of the sleeve, sliding sleeve, connecting pipe, connecting port, side cavity and fine hole are all filled with hydraulic oil. The button is connected to the electric hydraulic rod via an electric wire.

[0017] The technical solution provided in this disclosure may include the following beneficial effects: During operation, the propeller drives the support rod, which in turn propels the drone body into flight. Motor 1 drives the support frame to rotate horizontally, while Motor 2 drives the camera to swing left and right, effectively inspecting various facilities on the ground below the flight path. Motor 3 drives a circular plate to rotate at high speed inside the cover, using the inertia generated by the high-speed rotation of the plate to maintain balance. When the drone body tilts due to gusts of wind, the cover maintains balance under the action of the high-speed rotating circular plate, causing the cover to move the sliding sleeve inside the clamp. This movement is achieved by compressing or stretching Spring 1, which in turn presses one or two adjacent buttons. The buttons then transmit signals to the control circuit, which in turn controls the extension and retraction of the electro-hydraulic rod. This pushes one end of the support rod to rotate downwards or upwards inside the drone body, causing the other end of the support rod to rotate the propeller upwards or downwards, effectively keeping the propeller rotating horizontally. This effectively ensures stable propeller flight temperature when the drone body tilts due to gusts of wind, thus guaranteeing the safe flight of the drone.

[0018] When the drone tilts, a high-speed rotating disc inside the cover maintains balance. This causes the sliding sleeve on one side of the cover to move inward towards the inner side of the clamp, while the sliding sleeve on the other side moves outward from the inner side of the clamp. Hydraulic oil flows from one side to the other through the connecting pipe. If the drone's tilt is caused by flight vibration, it will quickly recover. The pressure of the hydraulic oil on one side of the piston through the connecting port disappears instantly, preventing the piston from moving out of the cavity. The support rod and propeller remain stable with the drone. If the drone tilts for a longer period due to gusts of wind, the piston will be pushed away from the inner side of the cavity by the hydraulic oil, which flows to the other side. This causes the cover to deflect relative to the drone, allowing the cover to press the button and adjust the propeller's flight direction. This prevents the button from being frequently pressed due to vibration, thus avoiding instability in the drone and propeller caused by frequent operation of the electro-hydraulic rod, and ensuring stable flight operation of the drone.

[0019] When the hydraulic oil pushes the piston to move inside the cavity, before the piston moves out of the cavity, the piston squeezes the slider through the connecting rod. The slider moves in the side cavity and squeezes the spring and hydraulic oil. The hydraulic oil flows from the fine hole to the other side, effectively damping the movement of the piston to achieve the purpose of shock absorption. When the piston moves to the outside of the cavity after being continuously squeezed and pushed by the hydraulic oil, the ferrule will connect with other ferrules through the connecting pipe, connecting port, cavity, connecting port and connecting pipe, so that the hydraulic oil can flow quickly, so that the cover can rotate quickly relative to the UAV body, and the cover can quickly press the button to adjust the flight direction of the propeller in a timely manner, so as to ensure the safety of the UAV operation.

[0020] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of a land inspection drone device according to an embodiment of the present disclosure. Figure 1 ; Figure 2 This is a cross-sectional view of a land inspection drone device according to an embodiment of this disclosure; Figure 3 This is a schematic diagram of the structure of a land inspection drone device according to an embodiment of the present disclosure; Figure 4 This is a schematic diagram of the structure of a land inspection drone device according to an embodiment of the present disclosure; Figure 5 This is a schematic diagram of the structure of a circular plate for a land inspection drone device according to an embodiment of this disclosure; Figure 6 This is a schematic diagram of the structure of a ferrule for a land inspection drone device according to an embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure of a cover for a land inspection drone device according to an embodiment of this disclosure; Figure 8 This is a schematic diagram of the piston structure of a land inspection drone device according to an embodiment of this disclosure; As shown in the figure: 1. Unmanned aerial vehicle body; 2. Support rod; 3. Propeller; 4. Support leg; 5. Camera; 6. Bracket; 7. Motor 1; 8. Motor 2; 9. Battery; 10. Control circuit; 11. Antenna; 12. Positioner; 13. Cover; 14. Motor 3; 15. Circular plate; 16. Sliding sleeve; 17. Clamping sleeve; 18. Spring 1; 19. Button; 20. Connecting pipe; 21. Through cavity; 22. Connecting port; 23. Side cavity; 24. Piston; 25. Slider; 26. Spring 2; 27. Fine hole. Detailed Implementation

[0022] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this disclosure proposes a land inspection drone device, characterized by comprising: an inspection component, a balancing component, and a damping component. The inspection component includes a drone body 1 and a camera 5. A flight component is mounted on the drone body 1, the flight component includes a support rod 2 and a propeller 3. An adjustment component is mounted on the camera 5, the adjustment component includes a first motor 7 and a second motor 8. A stabilizing mechanism is mounted on the support rod 2, the stabilizing mechanism including an electro-hydraulic rod 28. The balancing component includes a cover 13 and a button 19. A rotating component is mounted inside the cover 13, the rotating component includes a third motor 14 and a circular plate 15. A guide component is mounted on the cover 13, the guide component including a sliding sleeve 16 and a clamping sleeve 17. The damping component includes a connecting pipe 20 and a through cavity 21. A communication component is provided on the through cavity 21, the communication component including a connecting port 22 and a side cavity 23. A movable component is provided on the through cavity 21. The moving components include a piston 24 and a slider 25. An inner groove is formed on the inner side of the drone body 1. The motor 7 is bolted to the inner side of the inner groove. A bracket 6 is installed on the inner side of the inner groove. The top of the bracket 6 is keyed to the output shaft of the motor 7. The second motor 8 is bolted to the inner side of the bottom of the bracket 6. One side of the camera 5 is keyed to the output shaft of the second motor 8. The other side of the camera 5 is mounted on the inner wall of the bottom of the bracket 6 via a rotating shaft. The bottom of the camera 5 passes through the inner groove and extends to the bottom of the drone body 1. An antenna 11 is bolted to the inner wall of the top of the drone body 1. A locator 12 is bolted to the top of the drone body 1. The battery 9 is connected to the control circuit 10 via wires. The control circuit 10 is connected to the propeller 3, the electro-hydraulic rod 28, the motor 7, the second motor 8, the antenna 11, the locator 12, the third motor 14, and the button 19 via wires.

[0024] Understandably, during operation, propeller 3 drives support rod 2, which in turn drives drone body 1 to fly. Motor 1 7 drives bracket 6 to rotate horizontally, and motor 2 8 drives camera 5 to swing left and right, thus effectively inspecting various facilities on the ground below the flight path. Motor 3 14 drives circular plate 15 to rotate at high speed inside cover 13, using the inertia generated by the high-speed rotation of circular plate 15 to maintain balance. When drone body 1 tilts due to gusts of wind, cover 13 maintains balance under the action of the high-speed rotating circular plate 15, thereby causing cover 13 to drive sliding sleeve 16 to move inside clamp 17. The cover 13 moves by compressing or stretching the spring 18, thereby pressing one or two adjacent buttons 19. The button 19 then transmits a signal to the control circuit 10, which in turn controls the electric hydraulic rod 28 to extend and retract. This pushes one end of the support rod 2 to rotate downward or upward inside the drone body 1, causing the other end of the support rod 2 to drive the propeller 3 to rotate upward or downward. This effectively keeps the propeller 3 rotating horizontally, ensuring stable propeller temperature when the drone body 1 tilts due to gusts of wind, thus ensuring safe flight of the drone.

[0025] like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the bottom of the drone body 1 is bolted with support legs 4. One end of the support rod 2 is installed on the inner side of the drone body 1. The support rod 2 is mounted on the side wall of the drone body 1 via a pivot. The other end of the support rod 2 passes through the inner side of the drone body 1 and extends to the outer side of the drone body 1. The propeller 3 is bolted to the other end of the support rod 2. The propellers 3 are evenly distributed on the outer side of the drone body 1. A battery 9 is bolted to the inner wall of the bottom of the drone body 1. The bottom end of the electro-hydraulic rod 28 is mounted on the top of the battery 9 via a pivot. The top end of the electro-hydraulic rod 28 is connected to one end of the support rod 2 via a pivot. The clamp 17 is welded to the inner wall of the drone body 1. The sliding sleeve 16 is welded to the cover 13. At the top, the sliding sleeve 16 is locked inside the sleeve 17, the spring 18 is located inside the sliding sleeve 16, the top of the cover 13 is connected to the inner wall of the drone body 1 through the spring 18, the motor 14 is bolted to the inner wall of the top of the cover 13, the center of the circular plate 15 is welded to the output shaft of the motor 14, the inside of the cover 13 is a vacuum, the connecting pipe 20 is opened at the bottom of the side wall of the drone body 1, the through cavity 21 is opened at the top of the side wall of the drone body 1, the connecting port 22 is opened on the side wall of the drone body 1, both ends of the through cavity 21 are connected to one end of the connecting pipe 20 through the connecting port 22, and the other end of the connecting pipe 20 passes through the side wall of the drone body 1 and is connected to the inner side of the sleeve 17.

[0026] Understandably, when the drone body 1 tilts, the high-speed rotating circular plate 15 inside the cover 13 maintains balance, causing the sliding sleeve 16 on one side of the cover 13 to move inward toward the inside of the clamp 17, while the sliding sleeve 16 on the other side moves outward from the inside of the clamp 17. Hydraulic oil flows from one side to the other through the connecting pipe 20. If the drone's tilt is caused by flight vibration, it will quickly recover. The pressure of the hydraulic oil on one side of the piston 24 through the connecting port 22 disappears instantly, and the piston 24 will not move out of the inside of the cavity 21. The support rod 2 and the propeller 3 remain in contact with the drone body 1. Stability is ensured when the drone body 1 tilts for an extended period due to gusts of wind. This causes the piston 24 to be pushed open by hydraulic oil from the inside of the passage cavity 21. The hydraulic oil then flows to the other side through the passage cavity 21, causing the cover 13 to deflect relative to the drone body 1. This allows the cover 13 to press the button 19 and adjust the flight direction of the propeller 3. This prevents the button 19 from being frequently pressed due to vibration, thus avoiding instability in the flight of the drone body 1 and propeller 3 due to frequent operation of the electro-hydraulic rod 28. This ensures stable flight operation of the drone.

[0027] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the outer side of the piston 24 is engaged with the inner wall of the cavity 21, the side cavity 23 is opened at the top of the side wall of the unmanned aerial vehicle body 1, the outer side of the slider 25 is engaged with the inner wall of the side cavity 23, both ends of the piston 24 are connected to the slider 25 through connecting rods, one end of the slider 25 is connected to the inner wall of one end of the side cavity 23 through spring 26, a fine hole 27 is opened on the inner side of the side wall of the unmanned aerial vehicle body 1, and one end of the two side cavities 23 are connected to each other through the fine hole 27. The inner sides of the sleeve 17, the sliding sleeve 16, the connecting pipe 20, the connecting port 22, the side cavity 23 and the fine hole 27 are all filled with hydraulic oil, and the button 19 is connected to the electric hydraulic rod 28 through an electric wire.

[0028] It is understandable that when the hydraulic oil pushes the piston 24 to move inside the cavity 21, before the piston 24 moves out of the cavity 21, the piston 24 squeezes the slider 25 through the connecting rod. The slider 25 moves in the side cavity 23 and squeezes the spring 26 and the hydraulic oil. The hydraulic oil flows from the fine hole 27 to the other side, effectively damping the movement of the piston 24 to achieve the purpose of shock absorption. When the piston 24 moves to the outside of the cavity 21 after being continuously squeezed and pushed by the hydraulic oil, the ferrule 17 will be connected to other ferrules 17 through the connecting pipe 20, the connecting port 22, the cavity 21, the connecting port 22 and the connecting pipe 20, thereby allowing the hydraulic oil to flow quickly so that the cover 13 can rotate quickly relative to the UAV body 1, thereby allowing the cover 13 to quickly squeeze the button 19 so as to adjust the flight direction of the propeller 3 in a timely manner and ensure the working safety of the UAV.

[0029] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0030] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A land inspection unmanned aerial vehicle device, characterized in that, Include: The inspection component includes the unmanned aerial vehicle body (1) and the camera (5), the flight component is installed on the unmanned aerial vehicle body (1), the flight component includes the support rod (2) and the propeller (3), the adjusting component is installed on the camera (5), the adjusting component includes motor one (7) and motor two (8), the support rod (2) is installed with the stabilizing mechanism, the stabilizing mechanism includes electric hydraulic rod (28); The balance component includes the cover (13) and the button (19), the rotating component is installed in the cover (13), the rotating component includes motor three (14) and round plate (15), the guide component is installed on the cover (13), the guide component includes slide sleeve (16) and clamping sleeve (17); The damping component includes the connecting pipe (20) and the cavity (21), the communication component is provided on the cavity (21), the communication component includes the connecting port (22) and the side cavity (23), the movable component is provided on the cavity (21), the movable component includes the piston (24) and the sliding block (25).

2. The device for land inspection unmanned aerial vehicle according to claim 1, characterized in that: The bottom of the unmanned aerial vehicle body (1) is installed with the support leg (4) through the bolt, one end of the support rod (2) is installed on the inner side of the unmanned aerial vehicle body (1), the support rod (2) is installed on the side wall of the unmanned aerial vehicle body (1) through the rotating shaft, the other end of the support rod (2) passes through the inner side of the unmanned aerial vehicle body (1) and extends to the outer side of the unmanned aerial vehicle body (1), the propeller (3) is installed on the other end of the support rod (2) through the bolt, and the propeller (3) is uniformly distributed on the outer side of the unmanned aerial vehicle body (1).

3. The device for land inspection unmanned aerial vehicle according to claim 2, characterized in that: The inner wall of the bottom of the unmanned aerial vehicle body (1) is installed with the battery (9) through the bolt, the bottom end of the electric hydraulic rod (28) is installed on the top of the battery (9) through the rotating shaft, and the top end of the electric hydraulic rod (28) is connected with one end of the support rod (2) through the rotating shaft.

4. The device for land inspection unmanned aerial vehicle according to claim 3, characterized in that: The inner side of the unmanned aerial vehicle body (1) is provided with an inner groove, the motor one (7) is installed on the inner side of the inner groove through the bolt, the inner side of the inner groove is installed with the support (6), the top of the support (6) is connected with the output shaft of the motor one (7) through the key, the motor two (8) is installed on the inner side of the bottom of the support (6) through the bolt, one side of the camera (5) is connected with the output shaft of the motor two (8) through the key, the other side of the camera (5) is installed on the inner wall of the bottom of the support (6) through the rotating shaft, and the bottom of the camera (5) passes through the inner groove and extends to the bottom of the unmanned aerial vehicle body (1).

5. The device for land inspection unmanned aerial vehicle according to claim 4, characterized in that: The inner side of the unmanned aerial vehicle body (1) is installed with the control circuit (10) through the bolt, the inner wall of the top of the unmanned aerial vehicle body (1) is installed with the antenna (11) through the bolt, the top of the unmanned aerial vehicle body (1) is installed with the positioner (12) through the bolt, the battery (9) is connected with the control circuit (10) through the wire, and the control circuit (10) is connected with the propeller (3), the electric hydraulic rod (28), the motor one (7), the motor two (8), the antenna (11), the positioner (12), the motor three (14) and the button (19) through the wire.

6. The device for land inspection unmanned aerial vehicle according to claim 1, characterized in that: The sleeve (17) is welded on the inner wall of the unmanned aerial vehicle body (1), the sliding sleeve (16) is welded on the top of the cover (13), the sliding sleeve (16) is clamped on the inner side of the sleeve (17), the spring (18) is located on the inner side of the sliding sleeve (16), and the top of the cover (13) is connected with the inner wall of the unmanned aerial vehicle body (1) through the spring (18).

7. The device for land inspection unmanned aerial vehicle according to claim 6, characterized in that: The motor three (14) is installed on the inner wall of the top of the cover (13) through bolts, and the circular plate (15) is welded on the output shaft of the motor three (14) at the center. The inner side of the cover (13) is vacuum.

8. The device for land inspection unmanned aerial vehicle according to claim 7, characterized in that: The connecting pipe (20) is arranged at the bottom of the side wall of the unmanned aerial vehicle body (1), the through cavity (21) is arranged at the top of the side wall of the unmanned aerial vehicle body (1), the connecting opening (22) is arranged on the side wall of the unmanned aerial vehicle body (1), the two ends of the through cavity (21) are connected with one end of the connecting pipe (20) through the connecting opening (22), and the other end of the connecting pipe (20) penetrates through the side wall of the unmanned aerial vehicle body (1) and is connected with the inner side of the sleeve (17).

9. The device for land inspection unmanned aerial vehicle according to claim 8, characterized in that: The outer side of the piston (24) is clamped on the inner wall of the through cavity (21), the side cavity (23) is arranged at the top of the side wall of the unmanned aerial vehicle body (1), the outer side of the sliding block (25) is clamped on the inner wall of the side cavity (23), and the two ends of the piston (24) are connected with the sliding block (25) through connecting rods.

10. The device for land inspection unmanned aerial vehicle according to claim 9, characterized in that: One end of the sliding block (25) is connected with the inner wall of one end of the side cavity (23) through the spring (26), the inner side of the side wall of the unmanned aerial vehicle body (1) is provided with a fine hole (27), one end of the two side cavities (23) is connected with each other through the fine hole (27), the inner sides of the sleeve (17), the sliding sleeve (16), the connecting pipe (20), the connecting opening (22), the side cavity (23) and the fine hole (27) are all filled with hydraulic oil, and the button (19) is connected with the electric hydraulic rod (28) through wires.

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