Undercarriage device for unmanned aerial vehicle

Abstract

The invention discloses an undercarriage device for an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle takeoff and landing. The landing gear device for the unmanned aerial vehicle comprises a mounting frame, a buffer pad is fixedly connected to the bottom of the mounting frame, a connecting pipe is fixedly connected to the top of the mounting frame, a landing platform is fixedly connected to the top of the connecting pipe, and a processing mechanism is rotationally connected to the outer wall of the connecting pipe. According to the undercarriage device for the unmanned aerial vehicle, the air bag is arranged in the elastic buffer cushion at the bottom of the mounting frame, so that the impact force generated when the unmanned aerial vehicle lands is effectively absorbed, the landing stability is improved, and the landing requirements in shallow water and deep water environments can be flexibly met through the size-replaceable design; the landing safety and reliability of the unmanned aerial vehicle in different water areas are remarkably improved, the landing and landing platform adopts the circular design with the low middle and the high edge, the landing unmanned aerial vehicle and sundries on the platform can be automatically guided to gather towards the center, and the situation that the sundries are accumulated to affect landing is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicle landing gear, in particular to a landing gear device for unmanned aerial vehicle. BACKGROUND

[0002] The unmanned aerial vehicle landing gear is a key component for ensuring the safe take-off and landing of the unmanned aerial vehicle, and plays an important role in supporting the machine body and buffering the impact. The commonly used landing gear for fixed-wing unmanned aerial vehicles includes a front three-point type and a rear three-point type. The front three-point type is composed of a front landing gear and two main landing gears, has good landing stability, and is widely used in most fixed-wing models. The rear three-point type has the main landing gear in front and the tail wheel at the back, is suitable for low-speed models, but is prone to "jumping" during landing. The landing gear of a multi-rotor unmanned aerial vehicle is relatively simple, and is mostly a fixed foot stand made of carbon fiber or high-strength plastic, which is light and has a certain elasticity to buffer the impact force during landing. Some professional models are equipped with retractable landing gears that are deployed during take-off and landing and are retracted during flight to reduce the obstruction to the equipment under the machine body. In addition, some unmanned aerial vehicles for special scenarios also use floating pontoon type landing gears (for water landing), snowshoe type landing gears (for snow landing), etc. to adapt to different working environments and ensure reliable take-off and landing of the unmanned aerial vehicle under various conditions. The patent application with publication number CN119284238A discloses a low-drag turning device for an unmanned aerial vehicle landing gear, which belongs to the technical field of unmanned aerial vehicle structure design. The turning device includes an upper shell and a lower shell, which are fixedly connected to form a transmission cavity; a protective cover is installed on the upper shell to protect the motor and / or the angular displacement sensor, wherein the protective cover and the upper and lower shells are circular in profile on the windward side; a motor is installed on the upper shell with the end of the motor extending into the transmission cavity, and the end of the motor is fixed with a motor gear; first to fourth gear shafts are sequentially meshed, the first gear shaft is meshed with the motor gear, one end of the fourth gear shaft is installed with an angular displacement sensor, the angular displacement sensor is connected to a control board, and the control board is connected to the flight control through an aviation plug. The other end of the fourth gear shaft is connected to the landing gear main structure, the motor is controlled to rotate through the control board to drive the landing gear main structure to move, and the rotation angle of the landing gear main structure is obtained through the angular displacement sensor. The patent controls the rotation of the motor through the control panel to drive the main structure of the landing gear to move, and the rotation angle of the main structure of the landing gear is obtained through the angular displacement sensor. However, with the wide application of unmanned aerial vehicles in complex environments such as open fields, woodland, farmland and near-water areas, the core problem faced by the existing landing gear device is that the landing platform is prone to accumulate environmental debris such as fallen leaves, dry branches, splashed mud, sand and dust, and attract birds to inhabit or insects to gather. These debris not only cause the landing surface to be uneven, increasing the risk of the unmanned aerial vehicle tipping over or overturning when landing, but also may block or interfere with the on-board close-range sensor, affecting accurate landing judgment, and even clog or damage the key components in the belly of the unmanned aerial vehicle. At the same time, the activities of birds or insects not only have the direct risk of collision with the unmanned aerial vehicle, but also may be misjudged as obstacles by the sensor, triggering false obstacle avoidance. Their excrement or themselves further pollute the platform and exacerbate the risk of slipping. The existing technology mainly relies on passive design or manual cleaning, and it is difficult to effectively and actively clean and drive away the platform in real time when the unmanned aerial vehicle is frequently taking off and landing or long-term deployment. Therefore, the continuous accumulation of environmental interference on the landing platform has become a key bottleneck problem restricting the safe, reliable and autonomous landing of unmanned aerial vehicles in unstructured environments. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a landing gear device for unmanned aerial vehicles to solve the problems raised in the background art.

[0004] To achieve the above purpose, the present application is implemented by the following technical scheme: a landing gear device for unmanned aerial vehicles, comprising: Platform and buffer structure Mounting frame: as the main support frame, the elastic buffer pad at the bottom of the mounting frame is internally provided with an air bag, which not only effectively absorbs the impact force when the unmanned aerial vehicle lands, improving the landing stability, but also can be replaced in size to flexibly adapt to the landing requirements in shallow and deep water environments, significantly improving the safety and reliability of the unmanned aerial vehicle landing in different water areas.

[0005] Buffer pad: fixed to the bottom of the mounting frame, made of elastic material, internally provided with a replaceable air bag, the buoyancy is adjusted by inflation and deflation to adapt to the landing requirements in shallow and deep water areas and absorb the landing impact force.

[0006] Landing platform: fixed to the top of the mounting frame through the connecting pipe, adopts a circular slope structure with a concave middle and a raised edge (the inclination angle can be 5-10°), guiding the unmanned aerial vehicle and debris to the center, the landing platform adopts a circular design with a low middle and a high edge, which can automatically guide the unmanned aerial vehicle and the debris (such as fallen leaves and mud) on the platform to the center to prevent the accumulation of debris affecting the landing; the circular structure ensures that the unmanned aerial vehicle can land accurately from any angle, improving the versatility and convenience of the platform. The slot design at the top of the connecting pipe ensures the normal circulation of airflow during landing, reducing turbulence interference.

[0007] Connecting pipe: a ring-shaped array of through-slots is formed in the top, and a hole for removing impurities is arranged in the center of the landing platform to form an airflow passage.

[0008] Rotary processing mechanism: the rotatable processing mechanism (including a fan and a pneumatic buzzer component) generates high-speed airflow through the pneumatic buzzer component, which is directed to the landing platform, effectively removing fallen leaves, soil and other impurities on the platform. The pneumatic buzzer component produces a specific sound when the airflow passes through, which can drive away birds and insects near the platform, significantly reducing the impact of impurities and biological interference on the safe landing of the unmanned aerial vehicle. The direction of the pneumatic buzzer component can be adjusted to optimize the airflow coverage area. Connecting plate: coaxially arranged on the outer wall of the connecting pipe through a bearing, located between the landing platform and the mounting frame.

[0009] Fan: fixed to the outer edge of the connecting plate.

[0010] Pneumatic buzzer component: Dismountable and plug-in to the fan outlet, the airflow injection direction is controlled by rotating the plug-in angle (adjustable from 0 to 90 degrees), the motor drives the gear meshing with the gear rack, periodically reciprocating the connecting plate, fan and pneumatic buzzer component (two clockwise rotations followed by two counterclockwise rotations), this movement pattern enables the cleaning airflow to sweep the platform surface from different angles of the outer circle of the landing platform, achieving no dead angle coverage, greatly improving the efficiency and uniformity of impurity cleaning, the rotating action itself also has an additional dynamic driving effect on birds, and this mechanism is located outside the landing platform, which does not affect the landing of the unmanned aerial vehicle body. Built-in reed structure, 500Hz-2000Hz sound waves are excited when the airflow passes through, effectively driving away birds and insects. Rotary drive unit: Gear rack fixed to the outer wall of the connecting plate; Motor output shaft drives the gear meshing with the gear rack, performing a cycle of 720 degrees clockwise rotation to a pause of 0.5 seconds, followed by 720 degrees counterclockwise rotation to a pause of 0.5 seconds according to the preset program, driving the fan and pneumatic buzzer component to periodically sweep around the connecting pipe.

[0011] Cleaning mechanism: during the operation of the cleaning mechanism, the movement of the extrusion plate simultaneously drives the intermittent movement of the vibrating block, causing the gas tank and the entire airflow system (including the airflow pipe and the connecting pipe) connected thereto to vibrate. This vibration is transmitted to the landing platform, helping to shake off the adhered impurities and accelerate their movement and collection to the central low-lying area, greatly facilitating the subsequent airflow suction operation, improving the overall cleaning efficiency, and reducing the risk of system blockage. Gas tank: fixed to the side wall of the mounting frame by the first support, the inner cavity is a closed gas chamber, the cleaning mechanism drives the extrusion plate to reciprocate in the gas tank through the extension machine, cooperates with the one-way airflow control and the blocking block of spring action, the negative pressure suction force is generated when the extrusion plate resets, the blocking block is closed, the suction force acts on the center of the landing platform, and the gathered sundries are sucked into the connecting pipe system, which significantly enhances the sundry removal capacity, especially for small particle sundries.

[0012] Extension machine: the output end is connected with the extrusion plate to drive it to make linear reciprocating motion in the gas tank.

[0013] Airflow control assembly: Airflow pipe connects the inner cavities of the gas tank and the connecting pipe; The blocking block is hinged to the second support by a spring, and is sealed to the inlet of the airflow pipe under the action of the spring pre-tightening force; Work flow: Forward push of the extrusion plate: compress the air in the gas tank, the air pressure opens the blocking block, and the airflow is discharged to the outside through the airflow pipe; Retreat of the extrusion plate: negative pressure is formed in the gas tank, the spring pulls back the blocking block to seal the inlet, and the negative pressure sucks the sundries in the center of the landing platform through the connecting pipe.

[0014] Vibration assembly Structural composition: The vibration tank is arranged on the inner wall of the gas tank, and a stainless steel vibration piece (thickness can be 0.5mm) is arranged in the vibration tank; The push block is fixedly connected to the side surface of the extrusion plate and reciprocates with the extrusion plate.

[0015] Working mechanism: When the extrusion plate moves, the push block periodically impacts the vibration piece to generate mechanical vibration; The vibration is transmitted to the landing platform through the gas tank wall, the airflow pipe and the connecting pipe, so as to make the adhered sundries fall off and slide to the center; A landing gear device for unmanned aerial vehicle, comprising a mounting frame, the bottom of the mounting frame is fixedly connected with a buffer pad, the top of the mounting frame is fixedly connected with a connecting pipe, the top of the connecting pipe is fixedly connected with a landing platform, and the outer wall of the connecting pipe is rotatably connected with a processing mechanism. The processing mechanism comprises: A connecting plate is rotatably connected to the outer wall of the connecting pipe and located between the landing platform and the mounting frame; A fan is fixedly connected to the outer wall of the connecting plate, and the fan is used to generate airflow to remove sundries; The pneumatic bee buzzing component is inserted in the top of the fan, the insertion direction of the pneumatic bee buzzing component can be adjusted to adjust the blowing airflow direction of the pneumatic bee buzzing component, a plurality of grooves are formed in the top of the connecting pipe and used for passing airflow, a hole is formed in the outer wall of the landing platform and used for discharging sundries, the connecting plate is rotatably connected with the connecting pipe through a bearing, the outer wall of the connecting plate is fixedly connected with a gear rack, the outer wall of the gear rack is engaged with a gear, a motor is fixedly connected to the outer wall of the mounting frame and located close to the gear, the motor is rotatably connected with the gear, the motor drives the gear to rotate clockwise for two circles and then rotate counterclockwise for two circles, and drives the rotation of the connecting plate, the outer wall of the mounting frame is fixedly connected with a cleaning mechanism, the cleaning mechanism comprises a telescopic machine, the telescopic machine is fixedly connected to the outer wall of the mounting frame, a gas tank is fixedly connected to the outer wall of the mounting frame and located close to the telescopic machine, the outer wall of the telescopic machine is movably connected with a pressing plate, the telescopic machine is inserted into the gas tank through the pressing plate, the outer wall of the gas tank is fixedly connected with an airflow pipe, the airflow pipe penetrates through the connecting pipe, the connecting pipe, the airflow pipe and the gas tank are in communication, a first support is fixedly connected between the telescopic machine and the mounting frame, a vibration assembly is fixedly connected to the inner wall of the gas tank, a second support is fixedly connected to the outer wall of the mounting frame and located close to the airflow pipe, a spring is fixedly connected to the outer wall of the second support, a blocking block is fixedly connected to the outer wall of the spring and movably contacts with the airflow pipe, the vibration assembly comprises a vibration tank, the vibration tank is formed in the inner wall of the gas tank, a vibration piece is fixedly connected to the inner wall of the vibration tank, the outer wall of the pressing plate is fixedly connected with a pushing block, and the pushing block movably contacts with the vibration piece.

[0016] The application provides a landing gear device for a UAV. 1. The landing gear device for the UAV, the elastic buffer pad at the bottom of the mounting frame is provided with an air bag, which can effectively absorb the impact force when the UAV lands, improve the landing stability, and the size of the air bag can be replaced to adapt to the landing requirements in shallow water and deep water environments, thereby significantly improving the safety and reliability of the UAV landing in different water areas.

[0017] 2. The landing gear device for the UAV, the motor drives the gear to engage the gear rack, drives the connecting plate, the fan fixedly connected thereto and the pneumatic bee buzzing component to periodically reciprocate (two clockwise circles and two counterclockwise circles). This movement mode enables the cleaning airflow to blow the platform surface from different angles of the outer circle of the landing platform, realizes no dead angle coverage, greatly improves the sundry cleaning efficiency and uniformity. The rotation itself also has an additional dynamic driving effect on birds. The mechanism is located at the outer circle of the landing platform and does not affect the landing of the UAV body.

[0018] 3. The unmanned aerial vehicle landing gear device, through the cleaning mechanism, the extrusion plate is driven to reciprocate in the gas warehouse through the extension machine, cooperates with the one-way airflow control and the spring-acted blocking block, the negative pressure suction force is generated when the extrusion plate resets, the blocking block is closed, the suction force acts on the center of the landing platform, the gathered sundries are sucked into the connecting pipe system, the sundries removal capacity is significantly enhanced, and the effect is better for small particle sundries.

[0019] 4. The unmanned aerial vehicle landing gear device, through the movement of the extrusion plate during the working process of the cleaning mechanism, the stirring block intermittently stirs the vibrating piece, the gas warehouse and the whole airflow system (including the airflow pipe and the connecting pipe) connected therewith are vibrated, the vibration is transmitted to the landing platform, the adhered sundries are shaken off and moved to the center low-lying place to gather, the subsequent airflow suction operation is greatly facilitated, the overall cleaning efficiency is improved, and the system blockage risk is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 2 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 1 Figure 3 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 4 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 5 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 4 Figure 6 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 7 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 8 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 9 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 8 Figure 10 It is a schematic diagram of the shaft side three-dimensional structure of the application; Figure 11 It is a schematic diagram of the shaft side three-dimensional structure of the application.

[0021] ​​​In the figure: 1, buffer pad; 2, mounting frame; 3, connecting pipe; 4, landing platform; 5, processing mechanism; 51, connecting plate; 52, pneumatic buzzer component; 53, fan; 54, gear rack; 55, motor; 56, gear; 57, bearing; 6, cleaning mechanism; 61, first support; 62, telescopic machine; 63, gas tank; 64, air flow pipe; 65, blocking block; 66, spring; 67, second support; 68, vibration assembly; 681, vibration tank; 682, vibration piece; 683, toggle block; 69, extrusion plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0023] Examples of the described embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] Embodiment one, please refer to Figures 1-7 The present application provides a technical solution: a landing gear device for unmanned aerial vehicle, comprising a mounting frame 2, the bottom of the mounting frame 2 is fixedly connected with a buffer pad 1, the top of the mounting frame 2 is fixedly connected with a connecting pipe 3, the top of the connecting pipe 3 is fixedly connected with a landing platform 4, and the outer wall of the connecting pipe 3 is rotatably connected with a processing mechanism 5; The connecting pipe 3 is connected with the landing platform 4 and the mounting frame 2 respectively, the mounting frame 2 is provided with the buffer pad 1 at the bottom, the buffer pad 1 is made of elastic material and is internally provided with an air bag, which can cope with the landing of the unmanned aerial vehicle in shallow water, and the size of the buffer pad 1 can be replaced to adapt to the deep water environment, and the buffer pad 1 can buffer the impact force generated during the landing of the unmanned aerial vehicle; The landing platform 4 adopts a mode of low in the middle and high at the edge, which can guide the landing unmanned aerial vehicle and sundries to move to the middle position, the landing platform 4 is circularly arranged to adapt to the landing of the unmanned aerial vehicle at various angles, and a groove is formed in the top of the connecting pipe 3, which ensures the normal circulation of air flow when the unmanned aerial vehicle lands on the landing platform 4; The processing mechanism 5 comprises: A connecting plate 51 is rotatably connected to the outer wall of the connecting pipe 3 and located between the landing platform 4 and the mounting frame 2; A fan 53 is fixedly connected to the outer wall of the connecting plate 51, and the fan 53 is used to generate air flow to remove sundries; The pneumatic buzzer component 52 is inserted on the top of the fan 53, and the insertion direction of the pneumatic buzzer component 52 can be adjusted to adjust the blowing direction of the pneumatic buzzer component 52.

[0025] A plurality of grooves are formed on the top of the connecting pipe 3 for air flow, and holes are formed on the outer wall of the landing platform 4 for discharging sundries.

[0026] The connecting plate 51 is rotatably connected to the connecting pipe 3 through the bearing 57.

[0027] The outer wall of the connecting plate 51 is fixedly connected with the gear rack 54, the outer wall of the gear rack 54 is engaged with the gear 56, and the outer wall of the mounting frame 2 near the gear 56 is fixedly connected with the motor 55, and the motor 55 is rotatably connected with the gear 56.

[0028] The motor 55 drives the gear 56 to rotate clockwise for two turns and then rotate counterclockwise for two turns, thereby driving the rotation of the connecting plate 51.

[0029] The connecting plate 51 is arranged on the outer wall of the connecting pipe 3 through the bearing 57, and the connecting plate 51 can rotate through the bearing 57; The fan 53 generates air flow after being powered on, the air flow passes through the pneumatic buzzer component 52 to blow out air flow, the air flow blows on the landing platform 4, thereby cleaning the fallen leaves and splashed soil and other sundries on the landing platform 4, reducing the influence of the sundries on the landing of the unmanned aerial vehicle, and the direction of the pneumatic buzzer component 52 can be adjusted when it is disassembled, thereby adjusting the direction of blowing to the landing platform 4; When the air flow generated by the fan 53 passes through the pneumatic buzzer component 52, the pneumatic buzzer component 52 will emit a sound, which can drive away birds and insects near the landing platform 4, thereby reducing the influence on the landing of the unmanned aerial vehicle; The motor 55 is powered on, and a control element is arranged in the motor 55, thereby controlling the motor 55 to drive the gear 56 to rotate clockwise for two turns and then rotate counterclockwise for two turns, thereby cyclically driving the rotation of the gear 56, driving the rotation of the connecting plate 51 through the engagement of the gear 56 and the gear rack 54, thereby changing the positions of the pneumatic buzzer component 52 and the fan 53, allowing the pneumatic buzzer component 52 to blow air flow on the landing platform 4 from different angles for cleaning, and the movement of the connecting plate 51 can also have a certain driving effect on birds, and the pneumatic buzzer component 52 and the fan 53 are located at the outer circle position of the landing platform 4 and rotate, which will not affect the landing of the unmanned aerial vehicle on the landing platform 4.

[0030] In the embodiment two, please refer to Figures 1-11 On the basis of the embodiment one, the application provides a technical solution: The outer wall of the mounting frame 2 is fixedly connected with the cleaning mechanism 6.

[0031] The cleaning mechanism 6 comprises a telescopic machine 62 fixedly connected to the outer wall of the mounting frame 2, a gas warehouse 63 fixedly connected to the outer wall of the mounting frame 2 near the telescopic machine 62, an extrusion plate 69 movably connected to the outer wall of the telescopic machine 62, the telescopic machine 62 being inserted into the gas warehouse 63 through the extrusion plate 69, a gas flow pipe 64 fixedly connected to the outer wall of the gas warehouse 63, the gas flow pipe 64 penetrating through the connecting pipe 3, the connecting pipe 3, the gas flow pipe 64 and the gas warehouse 63 being in communication.

[0032] A first support 61 is fixedly connected between the telescopic machine 62 and the mounting frame 2, and a vibration assembly 68 is fixedly connected to the inner wall of the gas warehouse 63.

[0033] A second support 67 is fixedly connected to the outer wall of the mounting frame 2 near the gas flow pipe 64, a spring 66 is fixedly connected to the outer wall of the second support 67, a blocking block 65 is fixedly connected to the outer wall of the spring 66, and the blocking block 65 is movably contacted with the gas flow pipe 64. The gas warehouse 63 is connected with the connecting pipe 3 through the gas flow pipe 64, so that the telescopic machine 62 is powered on to drive the extrusion plate 69 to extrude in the gas warehouse 63, the gas in the gas warehouse 63 is extruded to flow through the gas flow pipe 64, at this time, the gas flow will push away the blocking block 65 in the elastic extrusion state of the spring 66, so that the gas flow is discharged from the gas flow pipe 64, a one-way valve is arranged in the connecting pipe 3 (the one-way valve is a valve that controls the flow of fluid (liquid, gas, etc.) in only one direction, and its core function is to prevent the flow of fluid in the opposite direction. It is usually composed of valve body, valve core (such as spherical, conical or disc-shaped) and spring, when the fluid flows from the inlet end, the pressure will push away the valve core to open the channel, when the fluid tries to flow in the opposite direction, the valve core tightly adheres to the valve seat under the pressure or spring action to close the channel), so that the gas flow will only flow from the top to the bottom of the connecting pipe 3, when the telescopic machine 62 drives the extrusion plate 69 to reset in the gas warehouse 63, the gas warehouse 63 will generate a negative pressure effect again, so that the gas flow pipe 64 generates a suction effect, at this time, the spring 66 is elastically extruded to make the blocking block 65 adhere to the gas flow pipe 64 to prevent the gas flow from entering, at this time, the suction force generated by the connecting pipe 3 acts on the landing platform 4, so that the sundries on the landing platform 4 are cleaned, then the extrusion plate 69 extrudes the gas warehouse 63 again, so that the gas flow carrying the sundries is discharged from the gas flow pipe 64; The elastic length of the spring 66 is greater than the distance between the second support 67 and the gas flow pipe 64, so that the blocking block 65 will block the gas flow pipe 64 in the normal state, and the blocking block 65 will be separated from the gas flow pipe 64 when it is impacted by the gas flow.

[0034] The vibration assembly 68 comprises a vibration warehouse 681, the vibration warehouse 681 being formed in the inner wall of the gas warehouse 63, a vibration sheet 682 being fixedly connected to the inner wall of the vibration warehouse 681, a pushing block 683 being fixedly connected to the outer wall of the extrusion plate 69, and the pushing block 683 being movably contacted with the vibration sheet 682. The extrusion plate 69 in the gas tank 63 during the movement will also drive the movement of the toggle block 683, the toggle block 683 is intermittently in contact with the vibration sheet 682, and in the process of multiple contacts, it will drive the gas tank 63 to vibrate, and the vibration is conducted to the landing platform 4 through the airflow pipe 64 and the connecting pipe 3, accelerating the sundries on the landing platform 4 to move towards the lower middle position of the landing platform 4, facilitating subsequent suction by the connecting pipe 3.

[0035] The buffer pad 1 at the bottom of the mounting frame 2 absorbs impact force when the unmanned aerial vehicle lands, and the elastic air bag design can be replaced to adapt to different water depth environments. The circular structure of the landing platform 4 is low in the middle and high at the edge, guiding the unmanned aerial vehicle and sundries to the center. In the processing mechanism 5, the high-speed airflow generated by the fan 53 is directed to the surface of the landing platform 4 through the pneumatic buzzer component 52, removing leaves, soil and other sundries, while the sound emitted by the pneumatic buzzer component 52 drives away birds and insects. The motor 55 is engaged with the gear rack 54 through the gear 56, driving the connecting plate 51 and the fan 53 and the pneumatic buzzer component 52 thereon to rotate periodically, realizing multi-angle cleaning of the outer circle of the landing platform 4 without dead angle. In the cleaning mechanism 6, the telescopic machine 62 drives the extrusion plate 69 to reciprocate in the gas tank 63: when extruding, the airflow pushes the blocking block 65 controlled by the spring 66 to the outside for discharge; when resetting, the blocking block 65 is closed, and the gas tank 63 generates negative pressure, sucking the sundries gathered from the center of the landing platform 4 through the connecting pipe 3. When the extrusion plate 69 moves, the toggle block 683 intermittently toggles the vibration sheet 682, causing the gas tank 63 and the connected connecting pipe 3 to vibrate, prompting the sundries adhered to the landing platform 4 to fall off and move towards the center, enhancing the suction effect. The coordinated work of each mechanism continuously maintains the cleanliness of the platform, ensuring the safe landing of the unmanned aerial vehicle.

[0036] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A landing gear device for a drone comprising a mounting bracket (2), characterized in that: The bottom of the mounting frame (2) is fixedly connected with a buffer pad (1), the top of the mounting frame (2) is fixedly connected with a connecting pipe (3), the top of the connecting pipe (3) is fixedly connected with a landing platform (4), and the outer wall of the connecting pipe (3) is rotatably connected with a processing mechanism (5). The processing mechanism (5) comprises: A connecting plate (51) is rotatably connected to the outer wall of the connecting pipe (3) and located between the landing platform (4) and the mounting frame (2); A fan (53) is fixedly connected to the outer wall of the connecting plate (51), and the fan (53) is used to generate airflow to remove sundries; An air-driven bee buzzing component (52) is inserted into the top of the fan (53), and the insertion direction of the air-driven bee buzzing component (52) can be adjusted to adjust the blowing direction of the air-driven bee buzzing component (52).

2. The landing gear device for a UAV according to claim 1, characterized in that: A plurality of grooves are formed in the top of the connecting pipe (3) for passing airflow, and the outer wall of the landing platform (4) is provided with holes for discharging sundries.

3. The landing gear device for unmanned aerial vehicle according to claim 1, characterized in that: The connecting plate (51) and the connecting pipe (3) are rotatably connected through a bearing (57).

4. The landing gear device for a UAV according to claim 3, characterized in that: The outer wall of the connecting plate (51) is fixedly connected with a gear rack (54), the outer wall of the gear rack (54) is engagedly connected with a gear (56), the mounting frame (2) is fixedly connected with a motor (55) near the position of the gear (56), and the motor (55) is rotatably connected with the gear (56).

5. The landing gear device for UAV according to claim 4, characterized in that: The motor (55) drives the gear (56) to rotate clockwise for two turns and then rotate counterclockwise for two turns, thereby driving the rotation of the connecting plate (51).

6. The landing gear device for a UAV according to claim 1, wherein: The outer wall of the mounting frame (2) is fixedly connected with a cleaning mechanism (6).

7. The landing gear device for UAV according to claim 6, characterized in that: The cleaning mechanism (6) comprises a telescopic machine (62) fixedly connected to the outer wall of the mounting frame (2), a gas tank (63) fixedly connected to the outer wall of the mounting frame (2) near the position of the telescopic machine (62), a squeezing plate (69) movably connected to the outer wall of the telescopic machine (62), the telescopic machine (62) being inserted into the gas tank (63) through the squeezing plate (69), a gas flow pipe (64) fixedly connected to the outer wall of the gas tank (63), the gas flow pipe (64) penetrating through the connecting pipe (3), and the connecting pipe (3), the gas flow pipe (64) and the gas tank (63) being in internal communication.

8. The landing gear device for a UAV according to claim 7, characterized in that: A first support (61) is fixedly connected between the telescopic machine (62) and the mounting frame (2), and a vibration assembly (68) is fixedly connected to the inner wall of the gas tank (63). 9.The landing gear device for a UAV of claim 7, wherein: A second support (67) is fixedly connected to the outer wall of the mounting frame (2) near the position of the gas flow pipe (64), a spring (66) is fixedly connected to the outer wall of the second support (67), a blocking block (65) is fixedly connected to the outer wall of the spring (66), and the blocking block (65) is in movable contact with the gas flow pipe (64).

10. The landing gear device for UAV according to claim 8, characterized in that: The vibration assembly (68) comprises a vibration bin (681) which is arranged on the inner wall of the gas bin (63), the inner wall of the vibration bin (681) is fixedly connected with a vibration piece (682), the outer wall of the extrusion plate (69) is fixedly connected with a pushing block (683), and the pushing block (683) is in movable contact with the vibration piece (682).

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