Shock absorption undercarriage of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle undercarriages, and discloses an unmanned aerial vehicle damping undercarriage which comprises a support, a supporting plate is fixedly connected to the lower end of the support, a damping mechanism is arranged at the lower end of the supporting plate, a buffering mechanism is arranged at the lower end of the supporting plate, and a rubber cushion is arranged below the supporting plate. And the upper end of the bracket is fixedly connected with a mounting plate. According to the damping undercarriage of the unmanned aerial vehicle, parts such as the box body, the liquid, the floating ball and the first friction particle plate are used in a matched mode, so that in the using process, particle damping is generated by moving the liquid in the box body and rubbing the floating ball with the first friction particle plate, and the damping effect is achieved; and longitudinal damping is generated by friction of a spring, a friction particle plate II, a damping groove and a rubber ring, so that the undercarriage can be damped when the unmanned aerial vehicle takes off and lands, and the undercarriage is prevented from being broken in the taking off and landing process.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle landing gears, in particular to a shock-absorbing landing gear for unmanned aerial vehicles. Background Art

[0002] In recent years, with the development of drone technology, drones have been used more and more widely in various fields, such as aerial photography, logistics, agriculture, monitoring, etc. However, during use, drones need to take off or land, so landing gear is needed. The drone landing gear is installed at the bottom of the drone body to support the body upward. It is an important component that can ensure the safe landing and take-off stability of the drone.

[0003] After searching, the patent number is 201920768098.3, and the name is a new type of utility model of a drone with foldable landing gear, including a drone body and a pair of landing gears installed at the bottom of the drone body, brackets are fixed on the left and right sides of the bottom of the drone body, and grooves are arranged on the inner sides of the brackets. The two landing gears are rotatably connected to one of the brackets respectively, and the upper end of each landing gear is inserted into the groove. A rotating shaft is rotatably passed through the upper end of the landing gear, and the two ends of the rotating shaft are inserted into the brackets at the two ends of the groove and have an interference fit with the bracket. A torsion spring for driving the landing gear to rotate outward is installed on the outside of the rotating shaft between the inner wall of the groove and the bracket. One end of the torsion spring is inserted into the inner wall of the groove, and the other end is inserted into the upper end of the landing gear. A locking structure for locking the landing gear after the landing gear is folded inward is arranged between the landing gear and the drone body.

[0004] However, in actual use, although this method can prevent the landing gear of the drone from being broken during carrying, the speed of the drone may be relatively fast during landing, which makes the impulse larger. Since the drone landing gear has no shock absorbing mechanism, the landing gear may be easily broken during the descent. Utility Model Content

[0005] The utility model aims to provide a shock-absorbing landing gear for an unmanned aerial vehicle, so as to solve the problem in the above-mentioned background technology that the landing gear is easy to break due to poor shock-absorbing effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock-absorbing landing gear for an unmanned aerial vehicle, comprising a bracket, a support plate fixedly connected to the lower end of the bracket, a shock-absorbing mechanism provided at the lower end of the support plate, a buffer mechanism provided at the lower end of the support plate, a rubber pad provided below the support plate, and a mounting plate fixedly connected to the upper end of the bracket, a mounting groove provided at the upper end of the mounting plate.

[0007] The shock absorbing mechanism includes a fixing groove, which is opened at the lower end of the supporting plate, a box body is fixedly connected to the lower end of the inner wall of the fixing groove, liquid is arranged inside the box body, a float is arranged inside the box body, a friction particle plate is fixedly connected to the lower end of the inner wall of the box body, a shock absorbing groove is opened at the lower end of the supporting plate, a fixing block is arranged inside the shock absorbing groove, a spring is fixedly connected to the lower end of the fixing block, and the spring is fixedly connected to the upper end of the rubber pad.

[0008] Preferably, left and right ends of the fixed block are fixedly connected with sliding blocks, left and right ends of the inner wall of the shock absorbing groove are provided with sliding grooves, and the sliding blocks are slidably connected to the inner wall of the sliding groove.

[0009] Preferably, the right end of the inner wall of the slide groove is fixedly connected with a second friction particle plate, the left end of the sliding block is fitted with the right end of the second friction particle plate, and the side wall of the float is fitted with the lower end of the first friction particle plate.

[0010] Preferably, the upper end of the rubber cushion is fixedly connected to a connecting column, and the outer wall of the connecting column is fixedly connected to a rubber ring.

[0011] Preferably, a limiting groove is provided at the lower end of the support plate, and the outer wall of the rubber ring is matched with the inner wall of the limiting groove.

[0012] Preferably, the buffer mechanism comprises a square groove, the square groove is opened at the lower end of the support plate, a motor is fixedly connected to the lower end of the inner wall of the square groove, a fan is fixedly connected to the output shaft of the motor, and an air inlet is opened at the upper end of the support plate.

[0013] Preferably, a filter screen is fixedly connected to the inner wall of the air inlet hole, and a gathering hole is opened at the upper end of the rubber pad.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The shock-absorbing landing gear of the UAV uses a box body, a liquid, a floating ball and a friction particle plate, etc. in combination, so that during use, the liquid moves in the box body and the floating ball rubs against the particle friction plate to generate particle damping for shock absorption effect, and the spring, the friction particle plate 2, the shock-absorbing groove and the rubber ring are used to rub to generate longitudinal damping, so that the landing gear can be shock-absorbing when the UAV takes off and lands, thereby preventing the landing gear from being broken during the take-off and landing process.

[0016] 2. The shock-absorbing landing gear of the drone uses a combination of motors, fans, retracting holes and other parts to facilitate the landing process. The speed impulse is still very large. At this time, the motor can be used to drive the fan to blow wind out of the retracting holes to buffer the resistance generated during the descent process, making the drone land more safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is an enlarged schematic diagram of the cross-sectional structure of the main view portion of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model from the side;

[0020] Figure 4 This is an enlarged schematic diagram of the structure of the utility model at A

[0021] Figure 5 It is an enlarged schematic diagram of a three-dimensional structure of a friction particle board of the utility model.

[0022] In the figure: 1. bracket; 2. support plate; 3. shock absorbing mechanism; 301. fixing groove; 302. box body; 303. liquid; 304. float; 305. friction particle plate 1; 306. shock absorbing groove; 307. fixing block; 308. spring; 309. slider; 310. slide groove; 311. friction particle plate 2; 312. connecting column; 313. rubber ring; 314. limit groove; 4. buffer mechanism; 401. square groove; 402. motor; 403. fan; 404. air inlet; 405. filter; 406. gathering hole; 5. rubber cushion; 6. mounting plate; 7. mounting groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides the following technical solutions:

[0025] Embodiment 1

[0026] See also Figure 1-5 A shock-absorbing landing gear for an unmanned aerial vehicle comprises a bracket 1, a support plate 2 is fixedly connected to the lower end of the bracket 1, a shock-absorbing mechanism 3 is arranged at the lower end of the support plate 2, a buffer mechanism 4 is arranged at the lower end of the support plate 2, a rubber cushion 5 is arranged below the support plate 2, a mounting plate 6 is fixedly connected to the upper end of the bracket 1, and a mounting groove 7 is opened at the upper end of the mounting plate 6.

[0027] The shock absorbing mechanism 3 includes a fixed groove 301, which is provided at the lower end of the support plate 2, a box body 302 is fixedly connected to the lower end of the inner wall of the fixed groove 301, a liquid 303 is arranged inside the box body 302, a floating ball 304 is arranged inside the box body 302, a friction particle plate 305 is fixedly connected to the lower end of the inner wall of the box body 302, a shock absorbing groove 306 is provided at the lower end of the support plate 2, a fixed block 307 is arranged inside the shock absorbing groove 306, a spring 308 is fixedly connected to the lower end of the fixed block 307, and the spring 308 is fixedly connected to the upper end of the rubber cushion 5, By using the box body 302, liquid 303, float 304 and friction particle plate 1 305 and other parts in combination, the liquid 303 is moved in the box body 302 and the float 304 is rubbed with the particle friction plate 1 during use, thereby generating particle damping for shock reduction effect, and by rubbing with the spring 308, friction particle plate 2 311, shock absorbing groove 306 and rubber ring 313 to generate longitudinal damping, thereby reducing the shock of the landing gear when the drone takes off and lands, thereby preventing the landing gear from breaking during the take-off and landing process.

[0028] Furthermore, sliders 309 are fixedly connected to the left and right ends of the fixed block 307, and sliding grooves 310 are opened on the left and right ends of the inner wall of the shock-absorbing groove 306. The slider 309 is slidably connected to the inner wall of the sliding groove 310. By using the slider 309 and the sliding groove 310, the slider 309 is limited in the sliding groove 310, so that it can only move in the up and down directions, so that the slider 309 contacts the friction particle plate 311 to generate damping.

[0029] Furthermore, a friction particle plate 2 311 is fixedly connected to the right end of the inner wall of the slide groove 310, the left end of the slider 309 fits with the right end of the friction particle plate 2 311, and the side wall of the float 304 fits with the lower end of the friction particle plate 1 305. By using the float 304, the float 304 can contact the friction particle plate 1 305 during the movement, thereby generating damping, and the liquid 303 is placed in the box body 302, which can generate particle damping and enhance its shock absorption effect.

[0030] Furthermore, the upper end of the rubber pad 5 is fixedly connected to a connecting column 312, and the outer wall of the connecting column 312 is fixedly connected to a rubber ring 313. By using the connecting column 312, the rubber ring 313 fixed by the outer wall of the connecting column 312 can be moved in the limiting groove 314 to generate friction, thereby facilitating the use of damping for shock reduction.

[0031] Furthermore, a limiting groove 314 is provided at the lower end of the support plate 2, and the outer wall of the rubber ring 313 is matched with the inner wall of the limiting groove 314. By using the limiting groove 314, the rubber ring 313 is limited so that the rubber ring 313 can only move up and down, thereby limiting the moving direction.

[0032] Embodiment 2

[0033] Combination Figure 1-5 On the basis of the first embodiment, the buffer mechanism 4 further comprises a square groove 401, the square groove 401 is provided at the lower end of the support plate 2, a motor 402 is fixedly connected to the lower end of the inner wall of the square groove 401, a fan 403 is fixedly connected to the output shaft of the motor 402, and an air inlet 404 is provided at the upper end of the support plate 2. By using the motor 402, the fan 403, the retracting hole 406 and other parts in combination, it is convenient for the UAV to have a large speed impulse during the landing process. At this time, the motor 402 can be used to drive the fan 403 to blow the wind out from the retracting hole 406 to produce a buffering effect on the resistance generated during the descent process, so that the UAV can land more safely.

[0034] Furthermore, a filter screen 405 is fixedly connected to the inner wall of the air inlet hole 404, and a gathering hole 406 is opened at the upper end of the rubber pad 5. The size of the square groove 401 is adapted to the size of the gathering hole 406. By using the gathering hole 406, the wind blown out by the fan 403 can be gathered in the gathering hole 406, and then the gathering hole 406 blows air to the bottom of the rubber pad 5, so that the stones below are blown away.

[0035] In actual operation, when this device is used, when the drone is falling, first, its motor 402 can be turned on, so that the motor 402 rotates and drives the fan 403 to rotate, and the air inlet 404 is blocked by the filter 405 to prevent fine particles from entering. The wind blown out by the fan 403 is blown out by the gathering hole 406, which can blow away the stones below, and then land. During the landing process, first the float 304 moves in the liquid 303, and while rubbing against its friction particle plate 1 305, its liquid 303 also moves in the box body 302, thereby generating particle damping, which is convenient for the drone to perform lateral shock absorption. When the drone touches the ground, the spring 308 is compressed, so that the slider 309 contacts the friction particle plate 2 311 in the slide groove 310, thereby generating longitudinal damping. Secondly, the rubber ring 313 fixed outside the connecting column 312 will also move in the limit groove 314, generating damping again, and performing secondary longitudinal shock absorption on the landing gear.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A shock-absorbing landing gear for an unmanned aerial vehicle, comprising a bracket (1), characterized in that: The lower end of the bracket (1) is fixedly connected to a support plate (2), the lower end of the support plate (2) is provided with a shock absorbing mechanism (3), the lower end of the support plate (2) is provided with a buffer mechanism (4), a rubber cushion (5) is provided below the support plate (2), the upper end of the bracket (1) is fixedly connected to a mounting plate (6), and the upper end of the mounting plate (6) is provided with a mounting groove (7); The shock absorbing mechanism (3) comprises a fixing groove (301), the fixing groove (301) is provided at the lower end of the supporting plate (2), a box body (302) is fixedly connected to the lower end of the inner wall of the fixing groove (301), a liquid (303) is arranged inside the box body (302), a floating ball (304) is arranged inside the box body (302), a friction particle plate (305) is fixedly connected to the lower end of the inner wall of the box body (302), a shock absorbing groove (306) is provided at the lower end of the supporting plate (2), a fixing block (307) is arranged inside the shock absorbing groove (306), a spring (308) is fixedly connected to the lower end of the fixing block (307), and the spring (308) is fixedly connected to the upper end of the rubber cushion (5).

2. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 1, characterized in that: The left and right ends of the fixed block (307) are fixedly connected with sliding blocks (309), the left and right ends of the inner wall of the damping groove (306) are provided with sliding grooves (310), and the sliding blocks (309) are slidably connected to the inner walls of the sliding grooves (310).

3. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 2, characterized in that: The right end of the inner wall of the slide groove (310) is fixedly connected with the second friction particle plate (311), the left end of the slider (309) is in contact with the right end of the second friction particle plate (311), and the side wall of the float (304) is in contact with the lower end of the first friction particle plate (305).

4. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 1, characterized in that: The upper end of the rubber cushion (5) is fixedly connected to a connecting column (312), and the outer wall of the connecting column (312) is fixedly connected to a rubber ring (313).

5. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 4, characterized in that: A limiting groove (314) is provided at the lower end of the support plate (2), and the outer wall of the rubber ring (313) is adapted to the inner wall of the limiting groove (314).

6. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 1, characterized in that: The buffer mechanism (4) comprises a square groove (401), the square groove (401) is provided at the lower end of the support plate (2), a motor (402) is fixedly connected to the lower end of the inner wall of the square groove (401), a fan (403) is fixedly connected to the output shaft of the motor (402), and an air inlet (404) is provided at the upper end of the support plate (2).

7. The shock-absorbing landing gear of an unmanned aerial vehicle according to claim 6, characterized in that: A filter screen (405) is fixedly connected to the inner wall of the air inlet hole (404), and a gathering hole (406) is provided at the upper end of the rubber cushion (5).

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