Damping undercarriage for multi-rotor unmanned aerial vehicle

Abstract

The utility model relates to the field of unmanned aerial vehicles, and particularly discloses a damping undercarriage for a multi-rotor unmanned aerial vehicle. The mounting plate, the support and the linkage assembly are arranged on the base plate, when the unmanned aerial vehicle gradually slows down and lands, the end of the sleeve makes contact with the ground firstly, the gravity of the unmanned aerial vehicle can drive the supporting frame and the friction sleeve to slide in the sleeve to compress the spring along with the gradual reduction of the lift force of the unmanned aerial vehicle, and then the unmanned aerial vehicle stops landing. The friction force between the friction sleeve and the sleeve can gradually consume the kinetic energy of the supporting frame and the elastic potential energy of the spring, finally the supporting frame is stabilized in the sleeve, and the unmanned aerial vehicle stably lands at a designated position through the supporting frame. At the moment, the support making contact with the ground firstly inclines outwards, meanwhile, the inclined support drives other supports to incline through the linkage assembly, the landing gravity center of the unmanned aerial vehicle body moves downwards, and stable landing of the unmanned aerial vehicle is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to unmanned plane technical field, concretely relates to a shock attenuation landing gear for multi-rotor unmanned plane. BACKGROUND

[0002] Multi-rotor unmanned plane is a kind of unmanned aircraft that provides lift and flight control by multiple rotors. Its core principle is to achieve attitude control by adjusting the rotational speed of each rotor, with the characteristics of vertical take-off and landing, hovering and flexible maneuvering. This kind of unmanned plane is simple in structure and convenient to control, and is widely used in aerial photography, agricultural plant protection, logistics distribution, disaster relief and other fields.

[0003] The existing multi-rotor unmanned plane landing gear has various forms, such as side support, support rod, etc. These support frames can provide support for unmanned planes, but the existing landing gear structures have some use defects. Because the existing landing gear structure is rigidly connected with the unmanned plane body, when the unmanned plane with a certain speed lands, the landing gear will first contact the ground. When the unmanned plane operator is not skilled in operation, the impact force when the unmanned plane lands will cause the landing gear to deform, and then make the unmanned plane body bounce, which is not conducive to the stable landing of the unmanned plane. Therefore, it is necessary to adjust the existing landing gear structure to reduce the probability of bouncing when the unmanned plane lands, so that the unmanned plane can land stably. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a shock attenuation landing gear for multi-rotor unmanned plane to solve the problem that the existing unmanned plane support may cause the unmanned plane to bounce when landing, and then cannot land stably.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A shock attenuation landing gear for multi-rotor unmanned plane, comprising:

[0007] A base plate connected to the unmanned plane, a plurality of mounting plates connected to the base plate;

[0008] A support connected to the base plate, the support comprising a support frame hingedly connected to the mounting plate and a sleeve slidingly connected to the end of the support frame, a spring provided inside the sleeve, one end of the spring abutting against the end of the support frame and the other end abutting against the inner wall of the sleeve, and a friction sleeve fixedly connected to the end of the support frame and abutting against the inner wall of the sleeve;

[0009] A linkage assembly provided on the base plate for linkage connection of a plurality of supports.

[0010] Preferably, the linkage assembly comprises a push-pull plate hinged at the end of the support frame, a rack is connected to the push-pull plate, and a gear cylinder engaged with the rack is rotatably connected to the base plate.

[0011] Preferably, a long sliding hole is formed in the push-pull plate, a spring sheet is connected to the base plate, and the spring sheet is arranged in a W shape, with the middle part of the spring sheet inserted into the long sliding hole.

[0012] Preferably, the spring sheet is made of spring steel.

[0013] Preferably, a sleeve shell is connected to the base plate and covers the linkage assembly.

[0014] Preferably, the end of the sleeve is fixedly connected with a tilt arranged support leg, a sliding groove is formed in the support frame, and a clamping block is fixedly connected to the sleeve and clamped in the sliding groove.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a base plate, a support frame and a linkage assembly are arranged on the base plate, when the unmanned aerial vehicle gradually slows down and lands, the end of the sleeve will first contact the ground, as the lift of the unmanned aerial vehicle gradually reduces, the gravity of the unmanned aerial vehicle will drive the support frame and the friction sleeve to slide and compress the spring in the sleeve, the friction between the friction sleeve and the sleeve will gradually consume the kinetic energy of the support frame and the elastic potential energy of the spring, finally, the support frame is stably arranged in the sleeve, and the unmanned aerial vehicle is stably landed on the specified position through the support frame.

[0017] In some special application occasions, when the unmanned aerial vehicle lands and deviates to cause the body to incline, the support frame first contacting the ground will incline outward, and the inclined support frame will drive other support frames to incline through the linkage assembly, so that the landing gravity center of the unmanned aerial vehicle body moves downward, which is helpful for the stable landing of the unmanned aerial vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a sleeve cross section structure schematic view of the utility model;

[0020] Figure 3 It is a linkage assembly structure schematic view of the utility model Figure 1 ;

[0021] Figure 4 It is a linkage assembly structure schematic view of the utility model Figure 2 ;

[0022] In the figure: 1, base plate; 2, mounting plate; 3, support frame; 31, sliding groove; 32, friction sleeve; 4, sleeve; 5, foot; 6, spring; 7, push-pull plate; 8, long sliding hole; 9, elastic sheet; 10, rack; 11, gear cylinder; 12, sleeve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Embodiment one:

[0025] Please refer to Figure 1 - Figure 4 As shown in the figure, a kind of shock-absorbing landing gear for multi-rotor unmanned aerial vehicle, comprising:

[0026] Base plate 1 is connected on the unmanned aerial vehicle, and a plurality of mounting plates 2 are connected on the base plate 1;

[0027] Support frame, connected on the base plate 1, the support frame includes support frame 3 articulated on the mounting plate 2 and sleeve 4 slidingly connected at the end of the support frame 3, the sleeve 4 is provided with spring 6 inside, one end of the spring 6 is in abutment with the end of the support frame 3, the other end is in abutment with the inner wall of the sleeve 4, and the end of the support frame 3 is fixedly connected with the friction sleeve 32 in abutment with the inner wall of the sleeve 4;

[0028] Linkage assembly, provided on the base plate 1, for linkage connection of a plurality of support frames.

[0029] As can be seen from the above, by providing mounting plate 2, support frame and linkage assembly on base plate 1, when the unmanned aerial vehicle gradually slows down and lands, the end of sleeve 4 will first contact the ground, as the lift of the unmanned aerial vehicle gradually decreases, the gravity of the unmanned aerial vehicle will drive the support frame 3 and the friction sleeve 32 to slide in the sleeve 4 to compress the spring 6, the friction between the friction sleeve 32 and the sleeve 4 will gradually consume the kinetic energy of the support frame 3 and the elastic potential energy of the spring 6, and finally the support frame 3 is stabilized in the sleeve 4, so that the unmanned aerial vehicle is stably landed on the designated position by the support frame 3; in some special application occasions, when the unmanned aerial vehicle lands with deviation, causing the body to tilt, the support frame that first contacts the ground will tilt outward at this time, and the tilted support frame will drive other support frames to tilt through the linkage assembly, so that the landing center of gravity of the unmanned aerial vehicle body moves downward, which helps the unmanned aerial vehicle to land stably.

[0030] Please refer to Figure 3 - Figure 4As shown, the linkage assembly comprises a push-pull plate 7 hinged at the end of the support frame 3, a rack 10 connected to the push-pull plate 7, a tooth cylinder 11 rotatably connected to the base plate 1 and engaged with the rack 10, a long sliding hole 8 formed in the push-pull plate 7, and a spring 9 connected to the base plate 1 and arranged in a W shape, with the middle part of the spring 9 inserted into the long sliding hole 8.

[0031] As can be seen from the above, when the unmanned aerial vehicle body tilts during landing, the support frame 3 of the support bracket that first contacts the ground will tilt outward. At this time, the tilted support frame 3 will push the push-pull plate 7 to move, the moving push-pull plate 7 drives the rack 10 to move on the outer wall of the tooth cylinder 11, the rack 10 drives the tooth cylinder 11 to rotate, and the rotating tooth cylinder 11 drives other racks 10 and push-pull plates 7 to move. The moving push-pull plate 7 moves on the spring 9 through the long sliding hole 8, forcing the spring 9 to deform. The deformed spring 9 stores elastic potential energy, which provides energy for the subsequent resetting of the push-pull plate 7. At this time, the push-pull plate 7 will be attached to the tooth cylinder 11 and move axially and vertically, thereby causing multiple support brackets to tilt synchronously. The lower ends of the multiple tilted support brackets will move outward, causing the positions of the sleeves 4 contacting the ground to move outward, thereby lowering the center of gravity of the unmanned aerial vehicle body and helping to improve the stability of the unmanned aerial vehicle during landing, avoiding bouncing or tilting of the unmanned aerial vehicle during landing.

[0032] In order to facilitate the spring 9 to deform smoothly and store elastic potential energy, the spring 9 is made of spring steel.

[0033] Please refer to Figure 1 As shown, the base plate 1 is connected to a sleeve 12 that covers the linkage assembly. The sleeve 12 can cover the rack 10, the tooth cylinder 11, and other components, thereby preventing these transmission components from being jammed by foreign matter during operation.

[0034] Please refer to Figure 2 As shown, the end of the sleeve 4 is fixedly connected to a tiltably arranged support leg 5, the support frame 3 is provided with a sliding groove 31, and the sleeve 4 is fixedly connected to a clamping block clamped in the sliding groove 31. During landing of the unmanned aerial vehicle, the support leg 5 will contact the ground instead of the sleeve 4. The bottom of the support leg 5 is circularly arranged, which is relatively round and can smoothly slide on the ground. Moreover, the end of the support leg 5 is upwardly tilted to avoid the sleeve 4 being clamped on the ground and unable to slide. The sliding groove 31 cooperates with the clamping block to limit the rotation of the sleeve 4, thereby limiting the position of the support leg 5 and keeping the support leg 5 in a state of tilting upward, thereby ensuring that the end of the support bracket can smoothly slide on the ground.

[0035] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0036] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without conflict.

[0040] The present application discloses the embodiments in the drawings, only the structures involved in the embodiments of the present application are involved, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other.

Claims

1. A shock absorbing landing gear for a multi-copter drone, characterized in that, The utility model relates to a kind of unmanned aerial vehicle mounting device, including: Substrate (1) is connected on the unmanned aerial vehicle, and multiple groups of mounting plate (2) are connected on the substrate (1); Support is connected on the substrate (1), and the support includes support frame (3) articulated on the mounting plate (2) and sleeve (4) slidingly connected at the end of the support frame (3), spring (6) is arranged inside the sleeve (4), one end of the spring (6) is in abutment with the end of the support frame (3), the other end is in abutment with the inner wall of the sleeve (4), and the end of the support frame (3) is fixedly connected with the friction sleeve (32) in abutment with the inner wall of the sleeve (4); Linkage assembly is arranged on the substrate (1), for linkage connection multiple groups of support.

2. The shock-absorbing landing gear for a multi-rotor unmanned aerial vehicle according to claim 1, characterized in that: The linkage assembly includes push-pull plate (7) articulated at the end of the support frame (3), rack (10) is connected on the push-pull plate (7), and gear cylinder (11) is rotatably connected on the substrate (1) and engaged with the rack (10).

3. The shock-absorbing landing gear for a multi-rotor unmanned aerial vehicle according to claim 2, characterized in that: Long sliding hole (8) is formed on the push-pull plate (7), and spring piece (9) is connected on the substrate (1), and the spring piece (9) is arranged in W shape, and the middle part of the spring piece (9) is inserted into the long sliding hole (8).

4. The shock-absorbing landing gear for a multi-rotor unmanned aerial vehicle according to claim 3, characterized in that: The spring piece (9) is spring steel material.

5. The shock-absorbing landing gear for a multi-rotor unmanned aerial vehicle according to claim 1, characterized in that: The substrate (1) is connected with sleeve (12) covering the outside of the linkage assembly.

6. The shock-absorbing landing gear for a multi-rotor unmanned aerial vehicle according to claim 1, characterized in that: The end of the sleeve (4) is fixedly connected with inclined supporting leg (5), and the support frame (3) is provided with sliding groove (31), and the sleeve (4) is fixedly connected with clamping block clamped in the sliding groove (31).

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