Unmanned aerial vehicle anti-collision device and unmanned aerial vehicle

Abstract

The present invention relates to the technical field of drones, specifically to a drone anti-collision device and a drone, comprising an anti-collision assembly arranged at one end of a rotor mounting rod of the drone, the anti-collision assembly comprising a buffer cylinder connected to one end of the mounting rod, having a cavity inside and an opening at one end, a telescopic unit, and at least two buffer units, one end of the telescopic unit extending into the buffer cylinder and rotatably connected to the buffer cylinder, at least two buffer units arranged in the buffer cylinder along the circumference of the buffer cylinder, and a buffer cavity is enclosed between at least two buffer units, the telescopic unit is inserted into the buffer cavity and the other end extends to the outside of the buffer cylinder, so as to absorb the impact force of the telescopic unit through at least two buffer units. The problem that the drone is easily collided with obstacles and damaged when the drone is improperly operated is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to an anti-collision device for UAVs and the UAVs. Background Art

[0002] Drones are unmanned aircraft controlled by radio remote control equipment. They can be used in surveying and mapping, logistics, military and other fields, providing convenience for high-altitude operations that are not convenient for human operation. In some high-altitude or dangerous working occasions, the convenience of drones can be fully utilized.

[0003] In the patent document with the existing patent application number of 202021650570.2, a UAV operation anti-collision and collision avoidance device is disclosed, and specifically discloses a UAV main body, a plurality of wings are arranged on the UAV main body, and an anti-collision and collision avoidance structure is arranged between two adjacent wings of the UAV main body, and the anti-collision and collision avoidance structure includes a baffle arranged on the wing of the UAV main body, an inner cavity is arranged in the baffle, and a buffer component is arranged in the inner cavity, and a central plug hole is arranged on the side of the fuselage of the baffle away from the UAV main body, and an anti-collision rod is inserted and fixed in the central plug hole, one end of the anti-collision rod protrudes from the end of the wing, and an arrangement channel is arranged in the anti-collision rod, and a matching inner tube is arranged and fixed in the arrangement channel, and thickened parts are arranged at both ends of the inner tube. Through the above scheme, depending on the impact angle, the anti-collision and collision avoidance structure may not play the anti-collision function, so that the anti-collision and collision avoidance structure has a poor effect on protecting the UAV main body, and the UAV is prone to collision damage with obstacles. Summary of the invention

[0004] In view of this, it is necessary to provide a UAV anti-collision device and a UAV to solve the problem that when the UAV is improperly operated, the UAV is prone to collision with obstacles, causing damage to the UAV.

[0005] The present invention provides an unmanned aerial vehicle (UAV) anti-collision device, comprising an anti-collision component arranged at one end of a rotor mounting rod of the UAV, the anti-collision component comprising a buffer cylinder connected to one end of the mounting rod, the buffer cylinder having a cavity inside and an opening at one end, a telescopic unit, and at least two buffer units, one end of the telescopic unit extending into the buffer cylinder and rotatably connected to the buffer cylinder, at least two of the buffer units being arranged in the buffer cylinder along the circumference of the buffer cylinder, and a buffer cavity being enclosed between at least two of the buffer units, the telescopic unit being inserted into the buffer cavity and the other end extending to the outside of the buffer cylinder, so as to absorb the impact force received by the telescopic unit through the at least two buffer units.

[0006] Preferably, one end of the telescopic unit is rotatably connected to the buffer cylinder via a rotating unit, and the rotating unit includes a ball head seat fixedly connected to the inner bottom wall of the buffer cylinder, a plurality of balls arranged in the ball head seat, a ball embedded in the ball head seat and a connecting shaft, one end of the connecting shaft is fixedly connected to the ball, and the other end of the connecting shaft is fixedly connected to one end of the telescopic unit, and the ball is tangent to the spherical surfaces of the plurality of balls.

[0007] Preferably, the telescopic unit includes a connecting cylinder fixedly connected to the other end of the connecting shaft, a sleeve fixedly arranged at one end of the connecting cylinder, a first piston slidably arranged in the connecting cylinder, a connecting rod with one end extending into the connecting cylinder and fixedly connected to the first piston, a second piston located in the sleeve and slidably sleeved on the connecting cylinder, a buffer ball and a plurality of elastic parts, wherein the plurality of elastic parts are arranged in the sleeve along the circumference of the connecting cylinder, the buffer ball is fixedly connected to the other end of the connecting rod, and a plurality of liquid holes connected to the sleeve are opened on the side wall of one end of the connecting cylinder, so that the hydraulic oil in the connecting cylinder can be pressed into the sleeve through the plurality of liquid holes through the first piston, so that the second piston can compress the plurality of elastic parts for vibration reduction.

[0008] Preferably, the buffer unit includes a sliding rod slidably connected to the buffer tube, a stopper fixed to one end of the sliding rod, and a compression spring sleeved on the sliding rod, one end of the compression spring abuts against the stopper, the other end of the compression spring contacts the inner wall of the buffer tube, and the buffer cavity is formed between at least two of the stoppers.

[0009] Preferably, a limit block is provided at the other end of the sliding rod.

[0010] Preferably, a sleeve is provided on the side of the buffer cylinder facing away from the outlet, one end of the rotor mounting rod is inserted into the sleeve, and one end of the rotor mounting rod is fixed to the sleeve via a screw.

[0011] Preferably, the cross section of the buffer tube is in the shape of a frustum, and the inner diameter of the buffer tube is gradually increased toward the open end.

[0012] Preferably, rubber pads are provided on the inner walls of at least two of the stoppers.

[0013] Preferably, the buffer ball is a sponge ball.

[0014] A drone comprises a fuselage, on which a plurality of rotor mounting rods are installed at equal intervals in the circumferential direction, and on which rotors are installed, and further comprises a drone anti-collision device as described in any of the above schemes, wherein the number of the anti-collision components is the same as the number of the rotors, and the plurality of the anti-collision components are respectively detachably installed on the plurality of the rotor mounting rods, and are respectively used to protect the plurality of the rotors.

[0015] The beneficial effects of the present invention are as follows: the present invention provides an unmanned aerial vehicle anti-collision device and an unmanned aerial vehicle. By detachably arranging the anti-collision component at one end of the rotor mounting rod of the unmanned aerial vehicle, the installation is convenient and the volume of the unmanned aerial vehicle will not be increased. According to the different angles at which the telescopic unit collides with the obstacle, the telescopic unit can rotate in the buffer cylinder, and the buffer unit is squeezed through the side wall of the telescopic unit to absorb the impact force received by the telescopic unit. Moreover, the telescopic unit can absorb the impact force by itself extending and retracting, thereby effectively protecting the unmanned aerial vehicle. The structure is simple, the anti-collision coefficient is high, and it is convenient for wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of a UAV anti-collision device and a UAV of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the anti-collision assembly of the present invention;

[0019] Figure 3 is a cross-sectional view of the anti-collision assembly of the present invention;

[0020] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0021] Figure 5 It is a front view of the anti-collision component of the present invention. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0023] The present invention provides an anti-collision device for a drone, comprising an anti-collision component 2 fixed to one end of a rotor mounting rod 11 of the drone, to prevent the drone from colliding with obstacles and causing damage due to improper operation, and to effectively extend the service life of the drone.

[0024] More specifically, the anti-collision component 2 includes a buffer tube 21 connected to one end of the mounting rod, the buffer tube 21 having a cavity inside and an opening at one end, a telescopic unit 22 and at least two buffer units 23, one end of the telescopic unit 22 extends into the buffer tube 21 and is rotatably connected to the buffer tube 21, at least two of the buffer units 23 are arranged in the buffer tube 21 along the circumference of the buffer tube 21, and a buffer cavity is enclosed between at least two of the buffer units 23, the telescopic unit 22 is inserted into the buffer cavity and the other end extends to the outside of the buffer tube 21, so as to absorb the impact force received by the telescopic unit 22 through at least two of the buffer units 23.

[0025] In order to facilitate the detachable connection between the anti-collision assembly 2 and the rotor mounting rod 11 of the drone, a sleeve 211 is provided on the side of the buffer cylinder 21 facing away from the outlet, one end of the rotor mounting rod 11 is inserted into the sleeve 211, and one end of the rotor mounting rod 11 is fixed to the sleeve 211 via a screw. During transportation, the anti-collision assembly 2 can be disassembled and cut into pieces to reduce the size of the drone.

[0026] In order to increase the rotation angle of the telescopic unit, specifically, the cross section of the buffer tube 21 is in a frustum shape, and the inner diameter of the buffer tube 21 is gradually increased toward the open end.

[0027] In this specific embodiment, the number of the buffer units 23 is four, and the buffer units 23 form a circular buffer cavity inside the buffer tube 21 .

[0028] On the basis of the above scheme, one end of the telescopic unit 22 is rotatably connected to the buffer cylinder 21 via a rotating unit 24, and the rotating unit 24 includes a ball head seat 241 fixedly connected to the inner bottom wall of the buffer cylinder 21, a plurality of balls 242 arranged in the ball head seat 241, a ball 243 embedded in the ball head seat 241, and a connecting shaft 244, one end of the connecting shaft 244 is fixedly connected to the ball 243, and the other end of the connecting shaft 244 is fixedly connected to one end of the telescopic unit 22, and the ball 243 is tangent to the spherical surface of the plurality of balls 242.

[0029] In order to reduce the length of the telescopic unit without reducing the vibration reduction effect of the telescopic unit, specifically, the telescopic unit 22 includes a connecting cylinder 221 fixedly connected to the other end of the connecting shaft 244, a sleeve 222 fixedly arranged at one end of the connecting cylinder 221, a first piston 223 slidably arranged in the connecting cylinder 221, a connecting rod 224 with one end extending into the connecting cylinder 221 and fixedly connected to the first piston 223, a second piston 225 located in the sleeve 222 and slidably sleeved on the connecting cylinder 221, a buffer ball 226, and a And a plurality of elastic members 227, the plurality of elastic members 227 are arranged in the sleeve 222 along the circumference of the connecting cylinder 221, the buffer ball 226 is fixedly connected to the other end of the connecting rod 224, and a plurality of liquid holes 2211 connected to the sleeve 222 are opened on the side wall of one end of the connecting cylinder 221, so that the hydraulic oil in the connecting cylinder 221 can be pressed into the sleeve 222 through the plurality of liquid holes 2211 through the first piston 223, so as to provide the second piston 225 with compressing the plurality of elastic members 227 for vibration reduction.

[0030] In this specific embodiment, the elastic member 227 is a return spring, and one end of the return spring is fixedly connected to the inner top wall of the sleeve 222, and the other end is fixedly connected to one side of the second piston 225. There are four return springs, and the buffer ball 226 is a sponge ball.

[0031] The buffer unit 23 includes a slide bar 231 slidably connected to the buffer tube 21, a stopper 232 fixed to one end of the slide bar 231, and a compression spring 233 sleeved on the slide bar 231, one end of the compression spring 233 abuts against the stopper 232, the other end of the compression spring 233 contacts the inner wall of the buffer tube 21, and the buffer cavity is formed between at least two of the stoppers 232. A limit block 234 is provided at the other end of the slide bar 231. Specifically, a rubber pad is provided on the inner wall of each of the stoppers 232.

[0032] In this specific embodiment, an unmanned aerial vehicle includes a fuselage 1, on which a plurality of rotor mounting rods 11 are installed at equal intervals in the circumferential direction, on which rotors 12 are installed, and the number of anti-collision components 2 is the same as the number of rotors 12. The plurality of anti-collision components 2 are respectively detachably installed on the plurality of rotor mounting rods 11, and are respectively used to protect the plurality of rotors 12.

[0033] During use, one end of the rotor mounting rod 11 is inserted into the sleeve 211, and the rotor mounting rod 11 and the sleeve 211 are fixed by screws. When the drone collides with an obstacle during flight, depending on the angle of the impact, the anti-collision component 2 will have two situations to absorb the impact force. The first situation is that the telescopic unit 22 rotates around the rotating unit 24, and the telescopic unit 22 and the block 232 squeeze the compression spring 233 to absorb the impact force exerted on the telescopic unit 22; the second situation is that when the connecting rod 224 is impacted, the first piston 223 is pushed to press the hydraulic oil in the connecting cylinder 221 into the sleeve 222 through a plurality of liquid holes 2211, and the second piston 225 compresses a plurality of elastic members 227 to absorb the impact force exerted on the connecting rod 224, thereby effectively preventing the fuselage 1 and the rotor 12 from colliding with obstacles and causing damage.

[0034] The beneficial effects of the present invention are:

[0035] The present invention provides an unmanned aerial vehicle (UAV) anti-collision device and an unmanned aerial vehicle (UAV). An anti-collision component is detachably arranged at one end of a rotor mounting rod of the UAV, so that the installation is convenient and the volume of the UAV will not be increased. The telescopic unit can rotate in a buffer cylinder according to different collision angles between the telescopic unit and an obstacle, and the buffer unit is squeezed through the side wall of the telescopic unit to absorb the impact force received by the telescopic unit. Moreover, the telescopic unit can absorb the impact force by itself extending and retracting, so that the UAV is effectively protected. The structure is simple, the anti-collision coefficient is high, and the device is convenient for wide promotion and application.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An anti-collision device for a drone, comprising an anti-collision component arranged at one end of a rotor mounting rod of the drone, characterized in that: The anti-collision assembly includes a buffer cylinder connected to one end of the mounting rod, the internal cavity of which is open at one end, a telescopic unit, and at least two buffer units, one end of the telescopic unit extends into the buffer cylinder and is rotatably connected to the buffer cylinder, at least two of the buffer units are arranged in the buffer cylinder along the circumference of the buffer cylinder, and a buffer cavity is formed between at least two of the buffer units, the telescopic unit is inserted into the buffer cavity and the other end extends to the outside of the buffer cylinder, so that the impact force received by the telescopic unit is absorbed by the at least two buffer units; One end of the telescopic unit is rotatably connected to the buffer cylinder via a rotating unit, and the rotating unit includes a ball head seat fixedly connected to the inner bottom wall of the buffer cylinder, a plurality of balls arranged in the ball head seat, a ball embedded in the ball head seat, and a connecting shaft, one end of the connecting shaft is fixedly connected to the ball, and the other end of the connecting shaft is fixedly connected to one end of the telescopic unit, and the ball is tangent to the spherical surfaces of the plurality of balls; The telescopic unit includes a connecting cylinder fixedly connected to the other end of the connecting shaft, a sleeve fixedly arranged at one end of the connecting cylinder, a first piston slidably arranged in the connecting cylinder, a connecting rod with one end extending into the connecting cylinder and fixedly connected to the first piston, a second piston located in the sleeve and slidably sleeved on the connecting cylinder, a buffer ball and a plurality of elastic parts, wherein the plurality of elastic parts are arranged in the sleeve along the circumference of the connecting cylinder, the buffer ball is fixedly connected to the other end of the connecting rod, and a plurality of liquid holes connected to the sleeve are provided on the side wall of one end of the connecting cylinder, so that the hydraulic oil in the connecting cylinder can be pressed into the sleeve through the plurality of liquid holes through the first piston, so that the second piston can compress the plurality of elastic parts for vibration reduction.

2. The UAV anti-collision device according to claim 1, characterized in that: The buffer unit includes a sliding rod slidably connected to the buffer tube, a stopper fixed to one end of the sliding rod, and a compression spring sleeved on the sliding rod, one end of the compression spring abuts against the stopper, and the other end of the compression spring contacts the inner wall of the buffer tube, and the buffer cavity is formed between at least two of the stoppers.

3. The UAV anti-collision device according to claim 2, characterized in that: A limit block is arranged at the other end of the slide rod.

4. The UAV anti-collision device according to claim 1, characterized in that: A sleeve is arranged on the side of the buffer cylinder facing away from the outlet, one end of the rotor mounting rod is inserted into the sleeve, and one end of the rotor mounting rod is fixed to the sleeve via a screw.

5. The UAV anti-collision device according to claim 1, characterized in that: The cross section of the buffer tube is in a frustum shape, and the inner diameter of the buffer tube is gradually increased toward the open end.

6. The UAV anti-collision device according to claim 2, characterized in that: At least two of the stoppers are provided with rubber pads on their inner walls.

7. The UAV anti-collision device according to claim 1, characterized in that: The buffer ball is a sponge ball.

8. An unmanned aerial vehicle, comprising a fuselage, a plurality of rotor mounting rods being installed at equal intervals in the circumferential direction of the fuselage, a rotor being installed on the rotor mounting rods, characterized in that: It also includes the UAV anti-collision device as described in any one of claims 1-7, the number of the anti-collision components is the same as the number of the rotors, and multiple anti-collision components are respectively detachably mounted on multiple rotor mounting rods, respectively used to protect the multiple rotors.

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