Rotor wing unmanned aerial vehicle landing auxiliary balancing device

Abstract

The invention relates to the field of unmanned aerial vehicles, in particular to a rotor unmanned aerial vehicle landing auxiliary balancing device which comprises a vehicle body, blades arranged on the periphery of the vehicle body, supporting rods mounted at the bottoms of the blades and a driving mechanism, a fluted disc is arranged in the center of the bottom of the vehicle body, and a sliding groove, an inserting groove and a transmission part are arranged at the bottom of the vehicle body. A base is arranged in the sliding groove. The follow-up mechanism comprises a fixing block and a T-shaped block which are arranged in the sliding groove, a pulling part and a locking part are arranged on the T-shaped block, and an unlocking part is arranged on the base; the adjusting mechanism comprises a tooth groove in the T-shaped block, an overturning rod is arranged on the base, a tooth block is arranged on the arc-shaped side wall of the overturning rod and meshed with the tooth groove, one end of the overturning rod is connected with a telescopic part, and a reset part, a limiting part and an adjusting part are arranged on the telescopic part. And through the arrangement of the driving mechanism, the follow-up mechanism and the adjusting mechanism, the unmanned aerial vehicle can be adjusted according to the supporting surface of the ground.

Description

Technical Field

[0001] The invention relates to the field of unmanned aerial vehicles, in particular to a landing auxiliary balancing device for a rotary-wing unmanned aerial vehicle. Background Art

[0002] A drone is an unmanned aircraft that is controlled by a radio remote control device and a self-contained program control device, or is operated completely or intermittently autonomously by an onboard computer. Drones can be divided into military and civilian use according to their application areas. In the military field, drones are divided into reconnaissance aircraft and target aircraft.

[0003] Most of the existing brackets at the bottom of drones are fixed and cannot be folded when the drone takes off. When the drone passes through a narrow space, the bracket will affect the drone's passability. At the same time, when the support area of ​​the drone's designated landing point is smaller than the support surface of the bracket, the drone cannot descend smoothly. If the drone continues to descend, it is easy to cause the drone to roll over. Summary of the invention

[0004] In view of the problem in the above or prior art that the drone cannot land smoothly when the support area of ​​the designated landing point of the drone is smaller than the support surface of the bracket, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a landing auxiliary balancing device for a rotary-wing unmanned aerial vehicle.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a landing auxiliary balancing device for a rotary-wing unmanned aerial vehicle comprises a body, wherein blades are arranged around the body, and a support rod is installed at the bottom of the blade. It also comprises a driving mechanism, wherein a toothed disk is arranged at the center position of the bottom of the body, a slide groove, a slot and a transmission part are arranged at the bottom of the body, and a base is arranged inside the slide groove; a follow-up mechanism comprises a fixed block and a T-shaped block arranged inside the slide groove, a pulling part and a locking part are arranged on the T-shaped block, and an unlocking part is arranged on the base; an adjusting mechanism comprises a tooth groove on the T-shaped block, a flip rod is arranged on the base, a tooth block is arranged on the arc-shaped side wall of the flip rod, the tooth block is meshed with the tooth groove, and one end of the flip rod is connected to a telescopic part, and a reset part, a limiting part and an adjusting part are arranged on the telescopic part.

[0007] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the transmission part includes a first fixed seat and a second fixed seat at the bottom of the body, and a threaded rod is rotatably connected to the first fixed seat, one end of the threaded rod passes through the second fixed seat and is connected to a bevel gear, and the bevel gear is meshed with the gear disk.

[0008] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the pulling part includes a first groove and a storage groove opened on the T-shaped block, a first spring is arranged inside the first groove, one end of the first spring is connected to a push rod, the top of the push rod is connected to a flip plate, and a second spring is arranged between the flip plate and the push rod.

[0009] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the locking part includes a through-hole and a second groove on the T-shaped block, a third spring is arranged inside the second groove, and one end of the third spring is connected to a rod inserted into the slot.

[0010] As a preferred solution of the landing auxiliary balancing device of the rotary-wing UAV of the present invention, the unlocking part includes a lifting rod on the side wall of the base, and a trapezoidal block is arranged on the side wall of the insertion rod.

[0011] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the telescopic part includes a first support tube connected to one end of the flip rod, a second support tube is arranged inside the first support tube, a limiting groove is arranged on the inner wall of the first support tube, and a limiting rod is connected to the outer wall of the second support tube, and the limiting rod is located inside the limiting groove.

[0012] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the reset part includes a fixing plate on the inner wall of the first support tube, one end of the fixing plate is connected to a fourth spring, and the end of the fourth spring away from the fixing plate is connected to the end of the second support tube.

[0013] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the limiting part includes a limiting groove on the outer side wall of the second support tube, and a limiting block is connected to the end of the first support tube away from the flip rod.

[0014] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, the adjusting part includes an arc tube on the outer wall of the fuselage, and the inner wall of the arc tube is connected to a pull rope, and the end of the pull rope away from the arc tube passes through the first support tube and the fixed plate in sequence and is connected to the end of the second support tube.

[0015] As a preferred solution of the rotor UAV landing auxiliary balancing device of the present invention, wherein: a space is left between the first support tube and the second support tube to facilitate the second support tube to flip downward; the top of the base and the bottom of the fixed block are in the same horizontal plane.

[0016] The beneficial effects of the rotor UAV landing auxiliary balancing device of the present invention are as follows: compared with the fixed bracket at the bottom of the existing UAV, when the support area of ​​the UAV descent point is small, the existing UAV cannot descend normally. Through the setting of the driving mechanism, the follower mechanism and the adjustment mechanism, the staff can gradually adjust the support area formed by the four second support tubes by flipping and lateral movement according to the support area of ​​the current descent point, and ensure that the first support tube is in an inclined state. At the same time, while reducing the support area formed by the four second support tubes, the second support tubes are retracted into the inside of the first support tube, thereby lowering the center of gravity of the UAV, making the UAV more stable when landing on the ground. When the UAV descends, the first support tube and the second support tube are locked to avoid the problem that the UAV is easy to roll over on the inclined ground due to the reduction of the support area, so that the landing gear of the UAV can be adjusted to the support surface of the ground adaptively and then descend, which is convenient for the UAV to land. When the UAV takes off, the first support tube can be made parallel to the bottom of the body, thereby increasing the passability of the UAV when flying through a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of a landing auxiliary balancing device for a rotary-wing UAV.

[0019] Figure 2 This is a schematic diagram of the bottom of the rotor UAV landing auxiliary balancing device.

[0020] Figure 3 This is a schematic diagram of the separation of the first support tube and the second support tube of the rotorcraft UAV landing auxiliary balance device.

[0021] Figure 4 This is a schematic diagram of the interior of the first support tube of the rotor UAV landing auxiliary balance device.

[0022] Figure 5 This is a schematic diagram of the interior of the chute of the rotorcraft drone landing auxiliary balance device.

[0023] Figure 6 This is a schematic diagram of the T-block cross-section of the rotor UAV landing auxiliary balance device.

[0024] Figure 7 Auxiliary balancing device for landing of rotary wing UAV Figure 6 Enlarged schematic diagram at point A in the middle.

[0025] Figure 8 This is a schematic diagram of the docking between the base and T-shaped block of the rotorcraft UAV landing auxiliary balance device.

[0026] Fig. 9 This is a schematic diagram of the separation of the base and T-shaped block of the rotorcraft UAV landing auxiliary balancing device.

[0027] In the figure: 10, body; 11, blade; 12, support rod; 13, toothed disc; 14, slide groove; 15, slot; 16, transmission part; 161, first fixed seat; 162, second fixed seat; 163, threaded rod; 164, bevel gear; 17, base; 20. Fixed block; 21. T-shaped block; 22. Pulling part; 221. First groove; 222. First spring; 223. Push rod; 224. Turn plate; 225. Second spring; 226. Storage slot; 23. Locking part; 231. Through hole; 232. Second groove; 233. Third spring; 234. Insertion rod; 24. Unlocking part; 241. Lifting rod; 242. Trapezoidal block; 30. Tooth groove; 31. Flip rod; 32. Tooth block; 33. Telescopic part; 331. First support tube; 332. Second support tube; 333. Limiting groove; 334. Limiting rod; 34. Reset part; 341. Fixing plate; 342. Fourth spring; 35. Limiting part; 351. Limiting groove; 352. Limiting block; 36. Adjusting part; 361. Arc tube; 362. Pull rope. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figures 1 to 9 The present technical solution provides a rotor UAV landing auxiliary balancing device, including a driving mechanism, a follower mechanism and an adjusting mechanism, which can enable the UAV to perform adaptive adjustments according to the supporting surface of the ground, thereby increasing the UAV's passability.

[0030] Furthermore, the driving mechanism can achieve the effect of adjusting the base 17 to be located at the bottom position of the body 10, which includes a body 10, and blades 11 are arranged around the body 10, and a support rod 12 is installed at the bottom of the blade 11. It also includes a driving mechanism, a gear disk 13 is arranged at the center position of the bottom of the body 10, and the gear disk 13 is rotated by a motor, and the motor is located inside the body 10, and a slide groove 14, a slot 15 and a transmission part 16 are arranged at the bottom of the body 10, and a base 17 is arranged inside the slide groove 14, and the number of the slide grooves 14 and the slot 15 are both four, and the four slide grooves 14 are distributed in a circular array around the gear disk 13, and the four slots 15 correspond to the four slide grooves 14 one by one, and one slot 15 and one slide groove 14 are connected to each other, and the slot 15 is located on the side away from the gear disk 13, and the top of the base 17 does not contact the inner wall of the slide groove 14, and the two side walls of the base 17 are respectively in contact with the inner wall of the slide groove 14.

[0031] Specifically, when the drone descends to a plane with a sufficiently large support surface, it is supported by the support rod 12 at the bottom of the blade 11 .

[0032] Furthermore, the transmission part 16 includes a first fixed seat 161 and a second fixed seat 162 at the bottom of the body 10, and a threaded rod 163 is rotatably connected to the first fixed seat 161. One end of the threaded rod 163 passes through the second fixed seat 162 and is connected to a bevel gear 164 wheel. The bevel gear 164 wheel is engaged with the gear plate 13. The first fixed seat 161 and the second fixed seat 162 are respectively located at two ends of the slide groove 14, and the first fixed seat 161 is located on a side adjacent to the gear plate 13. The base 17 is threadedly sleeved on the side wall of the threaded rod 163.

[0033] When in use, the staff can control the starting motor, the motor drives the gear plate 13 to rotate, the gear plate 13 drives the bevel gear 164 wheel to rotate, the bevel gear 164 wheel can drive the threaded rod 163 to rotate, and when the threaded rod 163 rotates, the base 17 can move inside the slide groove 14.

[0034] Furthermore, the follow-up mechanism can achieve the effect of unlocking, moving and locking the T-shaped block 21 when the base 17 moves, which includes a fixed block 20 and a T-shaped block 21 arranged inside the slide groove 14, a pulling part 22 and a locking part 23 are arranged on the T-shaped block 21, an unlocking part 24 is arranged on the base 17, the fixed block 20 is located between the second fixed seat 162 and the slot 15, and the T-shaped block 21 is flipped 90° so that one end of the T-shaped block 21 is located inside the slide groove 14, the longer end side wall of the T-shaped block 21 contacts the inner wall of the base 17, and the T-shaped block 21 is sleeved on the outside of the threaded rod 163.

[0035] Furthermore, the top of the base 17 and the bottom of the fixing block 20 are in the same horizontal plane.

[0036] Specifically, when the base 17 moves inside the slide groove 14 , it will not be blocked by the fixing block 20 .

[0037] When in use, the base 17 can push the T-shaped block 21 to move together when it moves toward the gear plate 13 in the slide groove 14 .

[0038] Furthermore, the pulling part 22 includes a first groove 221 and a storage groove 226 opened on the T-shaped block 21. A first spring 222 is arranged inside the first groove 221. One end of the first spring 222 is connected to a push rod 223. The top of the push rod 223 is connected to a flip plate 224. A second spring 225 is arranged between the flip plate 224 and the push rod 223. The first groove 221 is located on the longer end side wall of the T-shaped block 21, and the opening of the first groove 221 is opposite to the opening of the slide groove 14. The storage groove 226 is located above the first groove 221, and the storage groove 226 and the first groove 221 are connected to each other. Both sides of the push rod 223 are in contact with the inner wall of the storage groove 226.

[0039] Specifically, when the base 17 is located on a side adjacent to the second fixing base 162 , the first spring 222 is in a contracted state, and the push rod 223 and the second spring 225 are both located inside the first groove 221 , and the top of the flip plate 224 is blocked by the base 17 and cannot extend out of the storage slot 226 .

[0040] When in use, when the base 17 moves toward the first fixed seat 161, in the process of the base 17 approaching the T-shaped block 21, the base 17 gradually opens the storage slot 226. When the storage slot 226 is fully opened, the first spring 222 recovers and drives the push rod 223 to extend from the inside of the storage slot 226. The push rod 223 drives the flip plate 224 to rise inside the storage slot 226, so that one side of the flip plate 224 contacts the side wall of the base 17. At this time, the side of the base 17 away from the flip plate 224 contacts the T-shaped block 21.

[0041] Furthermore, the locking portion 23 includes a through hole 231 and a second groove 232 on the T-shaped block 21, a third spring 233 is arranged inside the second groove 232, one end of the third spring 233 is connected to an insertion rod 234 inserted into the slot 15, a through hole 231 is opened at one end of the T-shaped block 21 located inside the slide groove 14, the through hole 231 is located above the threaded rod 163, and the second groove 232 and the through hole 231 are connected to each other.

[0042] When in use, when one side of the T-shaped block 21 contacts the fixing block 20 , the third spring 233 can drive the insertion rod 234 to be inserted into the slot 15 to fix the position of the T-shaped block 21 .

[0043] Furthermore, the unlocking portion 24 includes a lifting rod 241 on the side wall of the base 17, and a trapezoidal block 242 is provided on the side wall of the insertion rod 234. The lifting rod 241 is located on a side adjacent to the T-shaped block 21, and the trapezoidal block 242 is fixedly sleeved on the side wall of the insertion rod 234. A slope is provided on the lifting rod 241, and the lifting rod 241 is always in contact with the trapezoidal block 242.

[0044] During use, when the base 17 is in contact with the T-shaped block 21, the base 17 drives the lifting rod 241 to move together. When the base 17 is completely in contact with the T-shaped block 21, the lifting rod 241 completely drives the trapezoidal block 242 to descend. At this time, the trapezoidal block 242 drives the insertion rod 234 to disengage from the inside of the slot 15, and the insertion rod 234 drives the third spring 233 to contract, thereby releasing the restriction on the T-shaped block 21, so that the T-shaped block 21 can move inside the slide groove 14.

[0045] Furthermore, the adjustment mechanism can adjust the support area of ​​the bracket according to the size of the support surface of the ground at the current landing point of the drone, and adjust the center of gravity of the drone according to the change of the support area, so as to facilitate the fixed-point landing of the drone. It includes a tooth groove 30 on the T-shaped block 21, a flip rod 31 is arranged on the base 17, a tooth block 32 is arranged on the arc-shaped side wall of the flip rod 31, the tooth block 32 is engaged with the tooth groove 30, one end of the flip rod 31 is connected to a telescopic part 33, and the telescopic part 33 is provided with a reset part 34, a limiting part 35 and an adjustment part 36. The tooth groove 30 is located on the side wall of the longer end of the T-shaped block 21, and the base 17 is in a "concave" shape. One end of the flip rod 31 is arranged inside the base 17 through a rotating shaft. At this time, the longer end of the T-shaped block 21 is located between the rotating shaft and the base 17, and the number of tooth blocks 32 is the same as the number of tooth grooves 30.

[0046] Specifically, when the flip rod 31 flips, due to the restrictions of the tooth groove 30 and the tooth block 32, the flip rod 31 cannot flip to be perpendicular to the body 10, so that the flip rod 31 can only maintain a tilted state except being parallel to the body 10.

[0047] When in use, when the base 17 moves, the base 17 can drive the flip rod 31 to move together. When the flip rod 31 moves, since the T-shaped block 21 does not move temporarily, the tooth groove 30 is located on the T-shaped block 21. When the tooth block 32 squeezes the tooth groove 30, the tooth block 32 will drive the flip rod 31 to flip downward.

[0048] Furthermore, the telescopic part 33 includes a first support tube 331 connected to one end of the flip rod 31, a second support tube 332 is arranged inside the first support tube 331, a limiting groove 333 is arranged on the inner wall of the first support tube 331, and a limiting rod 334 is connected to the outer wall of the second support tube 332, and the limiting rod 334 is located inside the limiting groove 333. There are two limiting grooves 333, and the two limiting grooves 333 are respectively located on the inner wall of the first support tube 331, and the two limiting grooves 333 are on the same horizontal line.

[0049] Specifically, by disposing the limiting rod 334 , the first support tube 331 and the second support tube 332 cannot rotate relative to each other, so that the second support tube 332 can only move bidirectionally inside the first support tube 331 .

[0050] Furthermore, a space is reserved between the first supporting tube 331 and the second supporting tube 332 for the second supporting tube 332 to flip downward.

[0051] Specifically, under the action of gravity, the second support tube 332 is inclined relative to the first support tube 331 , and the second support tube 332 is not parallel to the first support tube 331 , so that one end of the second support tube 332 contacts the inner wall of the first support tube 331 .

[0052] Furthermore, the reset portion 34 includes a fixing plate 341 on the inner wall of the first support tube 331, one end of the fixing plate 341 is connected to a fourth spring 342, and one end of the fourth spring 342 away from the fixing plate 341 is connected to the end of the second support tube 332. In the initial state, the fourth spring 342 drives the second support tube 332 to extend from the first support tube 331 to the longest state, and the second support tube 332 can drive the fourth spring 342 to contract when it is retracted into the interior of the first support tube 331.

[0053] Furthermore, the limiting portion 35 includes a limiting groove 351 on the outer wall of the second support tube 332, and a limiting block 352 is connected to the end of the first support tube 331 away from the flip rod 31. When the second support tube 332 is parallel to the body 10, the limiting groove 351 is located at the top of the outer wall of the second support tube 332, and the number of the limiting grooves 351 is multiple, and the multiple limiting grooves 351 are evenly distributed on the outer wall of the second support tube 332, and the limiting block 352 is located above the limiting groove 351.

[0054] When in use, when the end of the second support tube 332 is not in contact with the ground, the second support tube 332 is not parallel to the first support tube 331, one end of the second support tube 332 is in contact with the inner wall of the first support tube 331, the first support tube 331 and the second support tube 332 form an obtuse angle, the opening of the obtuse angle faces downward, and the other end of the second support tube 332 droops. When the end of the second support tube 332 is in contact with the ground, due to the dead weight of the drone, the obtuse angle opening formed by the first support tube 331 and the second support tube 332 faces upward, and the first support tube 331 drives the limiting block 352 to insert into the limiting groove 351, thereby locking the relative position of the first support tube 331 and the second support tube 332 to prevent the second support tube 332 from moving toward the inside of the first telescopic tube.

[0055] Furthermore, the adjustment part 36 includes an arc tube 361 on the outer wall of the body 10, and the inner wall of the arc tube 361 is connected to a pull rope 362. The end of the pull rope 362 away from the arc tube 361 passes through the first support tube 331 and the fixing plate 341 in sequence and is connected to the end of the second support tube 332. When the first support tube 331 is parallel to the bottom of the body 10, the bottom of the arc tube 361 contacts the side wall of the first support tube 331, and the number of arc tubes 361 corresponds to the number of first support tubes 331.

[0056] During use, when the flip rod 31 drives the first support tube 331 to flip, since the length of the pull rope 362 is fixed, when the first support tube 331 flips downward, in order to ensure the normal flipping of the first support tube 331, the pull rope 362 will pull the second support tube 332 into the interior of the first support tube 331, and the second support tube 332 drives the fourth spring 342 to contract.

[0057] Working principle: When the staff controls the motor to start, the motor drives the threaded rod 163 to rotate. When the threaded rod 163 rotates, it drives the base 17 to move inside the slide groove 14. During the process of the base 17 gradually moving toward the T-shaped block 21, the insertion rod 234 is disengaged from the inside of the slot 15. At the same time, the first spring 222 drives the push rod 223 to rise, and the push rod 223 drives the flip plate 224 and the second spring 225 to rise, so that the two sides of the base 17 are respectively in contact with the T-shaped block 21 and the flip plate 224.

[0058] When the control motor rotates in the reverse direction, the base 17 moves in the reverse direction inside the slide slot 14. Due to the support of the second spring 225 on the flip plate 224, the base 17 can push the flip plate 224 to move together. The flip plate 224 drives the push rod 223, and the push rod 223 drives the T-shaped block 21 to move. The T-shaped block 21 drives the third spring 233 and the plug rod 234 to move together. When the T-shaped block 21 moves to contact the fixed block 20, the T-shaped block 21 cannot continue to move due to the obstruction of the fixed block 20. When the threaded rod 163 continues to rotate, the base 17 squeezes the flip plate 224 to flip, and the flip plate 224 drives the second spring 225 to contract, and the second spring 225 drives the push rod 223 to descend and squeeze the first spring 222 while contracting, so that the push rod 223 gradually descends, and in the process that the base 17 gradually passes over the flip plate 224, the base 17 drives the lifting rod 241 to move, releases the squeezing of the trapezoidal block 242, and makes the third spring 233 recover. When the third spring 233 recovers, it drives the insertion rod 234 to rise, and the insertion rod 234 drives the trapezoidal block 242 to rise, and finally, the insertion rod 234 is reinserted into the interior of the slot 15, and this process is repeated to drive the T-shaped block 21 to move left and right.

[0059] When the drone needs to land at a designated location, but the support area of ​​the landing location is too small to support the stable support of the bracket on the drone, the staff can control the motor to start, so that the motor drives the gear plate 13 to rotate, and the gear plate 13 can drive the four bevel gear 164 wheels to rotate together, and the bevel gear 164 wheels drive the threaded rod 163 to rotate, so that the base 17 approaches the T-shaped block 21. During this process, the base 17 drives the tooth groove 30 to squeeze the tooth block 32, and the tooth block 32 drives the flip rod 31 to flip, so that the first support tube 331 is changed from being parallel to the body 10 to being inclined relative to the body 10, and the first support tube 331 drives the second support tube 332 to tilt together At the same time, when the first support tube 331 flips downward, through the arrangement of the arc tube 361 and the pull rope 362, the pull rope 362 can pull the second support tube 332 to shrink towards the inside of the first support tube 331, thereby reducing the landing center of the drone, ensuring the stability of the drone landing on the ground, and avoiding the drone being blown over by the wind as much as possible. At the same time, the support area formed by the four second support tubes 332 is further reduced until it is reduced enough for the drone to descend. The drone is controlled to descend so that the limiting block 352 on the first support tube 331 is inserted into the limiting groove 351, thereby avoiding the second support tube 332 from entering the first support tube 331. At this point, the landing of the drone is completed.

[0060] When the tooth groove 30 is meshed with the last tooth block 32, the tooth block 32 drives the side wall of the flip rod 31 to contact the T-shaped block 21, temporarily locking the position of the flip rod 31 to prevent the flip rod 31 from continuing to flip. At this time, the flip rod 31 drives the first support tube 331 to remain in a tilted state. When the support surface formed by the four second support tubes 332 is not enough to support the descent of the drone, the motor continues to drive the threaded rod 163 to rotate, and the base 17 moves inside the slide groove 14, releasing the restriction of the base 17 on the flip plate 224, and releasing the insertion rod 234 and the slot 15 from the T-shaped block. 21 is limited, so that the base 17 can push the T-shaped block 21 to move together, the base 17 drives the tooth block 32 to move horizontally, the tooth block 32 drives the flip rod 31 to move, and the flip rod 31 drives the first support tube 331 to move. Since the four first support tubes 331 are all close to the gear disc 13, the support area formed by the four second support tubes 332 is further reduced. At the same time, under the action of the pull rope 362, the second support tube 332 continues to shrink toward the inside of the first support tube 331, further reducing the support area formed by the four second support tubes 332, making it convenient for the drone to descend to the designated location.

[0061] When the drone takes off again, the user can control the motor output end to reverse, and the motor drives the gear plate 13 to reverse, so that the base 17 moves to the end of the slide groove 14. In this process, the T-block 21 is re-locked, and the fourth spring 342 recovers to drive the second support tube 332 to extend from the inside of the first support tube 331, so that the pull rope 362 gradually enters the inside of the first support tube 331. When the bottom of the arc tube 361 contacts the side wall of the first support tube 331, the first support tube 331 is parallel to the bottom of the body 10, which increases the bottom passability of the drone when flying through a narrow space.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A landing auxiliary balancing device for a rotary wing unmanned aerial vehicle, comprising a body (10), wherein blades (11) are arranged around the body (10), and a support rod (12) is installed at the bottom of the blade (11), characterized in that: Also includes, A driving mechanism, wherein a toothed disc (13) is disposed at the center of the bottom of the machine body (10), a slide groove (14), a slot (15) and a transmission part (16) are disposed at the bottom of the machine body (10), and a base (17) is disposed inside the slide groove (14); A follower mechanism, comprising a fixed block (20) and a T-shaped block (21) arranged inside the slide groove (14), wherein the T-shaped block (21) is provided with a pulling portion (22) and a locking portion (23), and the base (17) is provided with an unlocking portion (24); The adjustment mechanism comprises a tooth groove (30) on the T-shaped block (21), a flip rod (31) is provided on the base (17), a tooth block (32) is provided on the arc-shaped side wall of the flip rod (31), the tooth block (32) is meshed with the tooth groove (30), one end of the flip rod (31) is connected to a telescopic part (33), and the telescopic part (33) is provided with a reset part (34), a limiting part (35) and an adjustment part (36).

2. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 1, characterized in that: The transmission part (16) comprises a first fixed seat (161) and a second fixed seat (162) at the bottom of the body (10); the first fixed seat (161) is rotatably connected to a threaded rod (163); one end of the threaded rod (163) passes through the second fixed seat (162) and is connected to a bevel gear (164) wheel; the bevel gear (164) wheel is meshed with the toothed disc (13).

3. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 2, characterized in that: The pulling portion (22) comprises a first groove (221) and a storage groove (226) formed on the T-shaped block (21); a first spring (222) is arranged inside the first groove (221); one end of the first spring (222) is connected to a push rod (223); a top of the push rod (223) is connected to a flip plate (224); and a second spring (225) is arranged between the flip plate (224) and the push rod (223).

4. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 3, characterized in that: The locking portion (23) comprises a through opening (231) and a second groove (232) on the T-shaped block (21); a third spring (233) is arranged inside the second groove (232); one end of the third spring (233) is connected to an insertion rod (234) inserted into the slot (15).

5. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 4, characterized in that: The unlocking portion (24) comprises a lifting rod (241) on the side wall of the base (17), and a trapezoidal block (242) is provided on the side wall of the insertion rod (234).

6. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 5, characterized in that: The telescopic portion (33) comprises a first support tube (331) connected to one end of the flip rod (31); a second support tube (332) is arranged inside the first support tube (331); a limiting groove (333) is arranged on the inner wall of the first support tube (331); a limiting rod (334) is connected to the outer wall of the second support tube (332); and the limiting rod (334) is located inside the limiting groove (333).

7. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 6, characterized in that: The reset portion (34) comprises a fixing plate (341) on the inner wall of the first support tube (331), one end of the fixing plate (341) being connected to a fourth spring (342), and one end of the fourth spring (342) away from the fixing plate (341) being connected to an end of the second support tube (332).

8. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 7, characterized in that: The limiting portion (35) comprises a limiting groove (351) on the outer side wall of the second support tube (332), and one end of the first support tube (331) away from the flip rod (31) is connected to a limiting block (352).

9. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 8, characterized in that: The adjusting portion (36) comprises an arc-shaped tube (361) on the outer wall of the machine body (10); the inner wall of the arc-shaped tube (361) is connected to a pull rope (362); an end of the pull rope (362) away from the arc-shaped tube (361) passes through the first support tube (331) and the fixing plate (341) in sequence and is connected to the end of the second support tube (332).

10. The landing auxiliary balancing device for a rotary-wing UAV as claimed in claim 9, characterized in that: A space is left between the first support tube (331) and the second support tube (332) to facilitate the second support tube (332) to flip downward; The top of the base (17) and the bottom of the fixing block (20) are located at the same horizontal plane.

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