Damping and stabilizing device for unmanned aerial vehicle surveying and mapping equipment

Abstract

The utility model relates to the technical field of unmanned aerial vehicle surveying and mapping, in particular to a damping stabilizing device for unmanned aerial vehicle surveying and mapping equipment, which comprises four supporting legs arranged below a vehicle body, a damping mechanism comprises two cylinder bodies arranged in a first sliding chute, one-way valves are arranged on the surfaces of the cylinder bodies, and the other one-way valves are arranged on the surfaces of the cylinder bodies. A plurality of snifting valves are arranged on the surface of the cylinder body, a piston is connected to the inner wall of the cylinder body in a sliding mode, and a spring is arranged in the cylinder body; by arranging the cylinders to be matched with the springs and the snifting valves, when the unmanned aerial vehicle lands, the supporting legs pull the springs in the two cylinders, gas in the cylinders is sprayed out through the snifting valves, the buffering effect is achieved at the same time, when the springs rebound, the springs are matched with the one-way valves under the resistance of the pistons to enable the springs to rebound slowly, and the buffering effect is achieved. And the problem of repeated springback of the spring is reduced, the cushioning effect is enhanced, and meanwhile the stability in the landing process is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle (UAV) surveying and mapping, and in particular to a shock-absorbing and stabilizing device for UAV surveying and mapping equipment. Background Art

[0002] Drone surveying and mapping equipment is a tool that uses drones equipped with high-precision sensors, cameras, lidar and other equipment to conduct ground measurements and collect data. Drone surveying and mapping devices are prone to impact during landing, affecting their internal components, so a shock-absorbing and stabilizing device is required during landing.

[0003] After searching, the Chinese patent "A shock-absorbing landing gear for surveying and mapping UAV for geographic information" is authorized with the announcement number "CN218229401U". The shock-absorbing landing gear for surveying and mapping UAV for geographic information is supported by two pairs of spring support rods, making the UAV more stable during landing.

[0004] The above application can only cushion the impact of the drone when it lands by using a spring in conjunction with the landing gear. The greater the pressure on the spring, the greater the rebound force it generates. When the drone lands, the spring is prone to repeated rebound, causing unstable landing and easily damaging the drone's internal precision components.

[0005] Therefore, a shock-absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the present invention is to provide a shock absorbing and stabilizing device for UAV surveying and mapping equipment in order to solve the above-mentioned problems, thereby improving the instability problem of the UAV during landing.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a shock-absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment, comprising: four legs installed below the body, the surfaces of the legs being provided with a first slide groove;

[0008] The shock-absorbing mechanism includes two cylinder bodies arranged inside the first slide groove, a connecting pipe is connected between the two cylinder bodies, a one-way valve is provided on the surface of the cylinder body, a plurality of jet valves are provided on the surface of the cylinder body, a piston is slidably connected to the inner wall of the cylinder body, a spring is provided inside the cylinder body, one end of the spring is fixedly connected to the surface of the piston and the other end is fixedly connected to the inner wall of the cylinder body.

[0009] Preferably, the opposite ends of the two pistons pass through the cylinder body, and one end of the piston passing through the cylinder body is fixedly connected to a fixing block, so that the piston can compress the gas while following the expansion of the legs, thereby improving the shock absorption effect.

[0010] Preferably, the inner wall of the fixed block is rotatably connected to a slide rod, and both ends of the slide rod are fixedly connected to slide balls, so that the shock absorbing mechanism can move while the legs are unfolded, thereby preventing the shock absorbing mechanism from being damaged.

[0011] Preferably, a second chute is formed on the surface of the first chute, and the sliding ball is slidably connected to the second chute, so that the shock absorbing mechanism is installed inside the leg, saving space.

[0012] Preferably, the top of each set of legs is rotatably connected to a limit rod, the surface of the limit rod is rotatably connected to a connecting block, and the top of the connecting block is fixedly connected to the body, so that the drone is more stable when landing.

[0013] Preferably, the cross section of the supporting leg is arc-shaped, and the first sliding groove and the second sliding groove are arranged in an arc shape, so that the shock absorbing mechanism can move along the supporting leg.

[0014] Preferably, the legs are arranged in groups of two, and the legs in each group are arranged opposite to each other. When the drone lands, the two legs can be unfolded to decompose the force to achieve a better shock absorption effect.

[0015] The beneficial effects of the utility model are:

[0016] 1. By setting up a cylinder body with a spring and an air jet valve, when the drone lands, the legs pull the springs in the two cylinders, and the compressed gas in the cylinders is ejected through the air jet valve, achieving a cushioning effect. When the spring rebounds, the one-way valve slowly rebounds under the resistance of the piston, reducing the problem of repeated spring rebound, enhancing the cushioning effect and also improving the stability during landing.

[0017] 2. When the drone lands, the two relatively curved legs will expand to both sides, pulling the two pistons in the shock-absorbing mechanism to squeeze the springs, decomposing the vertical downward impact of the drone into forces along the two legs. Combined with the contraction of the two springs, the shock-absorbing effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the support leg of the present utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the support leg of the utility model;

[0021] Figure 4 It is a cross-sectional view of the support leg of the utility model;

[0022] Figure 5It is a cross-sectional view of the shock absorbing mechanism of the present utility model.

[0023] In the figure: 100, support leg; 110, first slide groove; 111, second slide groove; 200, connecting block; 210, limit rod; 300, shock-absorbing mechanism; 310, cylinder body; 311, piston; 312, spring; 320, connecting pipe; 330, sliding ball; 331, sliding rod; 332, fixing block; 340, jet valve; 350, one-way valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] When implementing: Figure 1-5 As shown, a shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment includes: four legs 100 installed under the body, and a first slide groove 110 is opened on the surface of the legs 100;

[0026] The shock-absorbing mechanism 300 includes two cylinder bodies 310 arranged inside the first slide groove 110, a connecting pipe 320 is connected between the two cylinder bodies 310, a one-way valve 350 is provided on the surface of the cylinder body 310, and a plurality of jet valves 340 are provided on the surface of the cylinder body 310. The inner wall of the cylinder body 310 is slidably connected to the piston 311, and a spring 312 is provided inside the cylinder body 310. One end of the spring 312 is fixedly connected to the surface of the piston 311 and the other end is fixedly connected to the inner wall of the cylinder body 310.

[0027] like Figure 3 、 Figure 4 and Figure 5 As shown, the opposite ends of the two pistons 311 pass through the cylinder body 310, and one end of the piston 311 passing through the cylinder body 310 is fixedly connected to a fixed block 332. A second slide groove 111 is provided on the surface of the first slide groove 110, and the sliding ball 330 is slidably connected to the second slide groove 111. The top end of each set of legs 100 is rotatably connected to the limit rod 210, and the surface of the limit rod 210 is rotatably connected to the connecting block 200, and the top end of the connecting block 200 is fixedly connected to the body.

[0028] In this embodiment, the medium in the cylinder 310 and the connecting pipe 320 is gas, and the one-way valve 350 allows the gas to flow only from the outside to the inside of the cylinder 310. The jet valve 340 is also one-way and can only be ejected from the inside of the cylinder 310 to the outside. When the piston 311 moves in the cylinder 310, it will change the pressure in the cylinder 310, so that it can be ejected through the jet valve 340 or inhaled through the one-way valve 350. The connecting pipe 320 is made of stainless steel. When the slide rod 331 and the sliding ball 330 move along the second groove body, the connecting pipe 320 is connected. The tube 320 serves to connect and support the two cylinder bodies 310. There is resistance when the piston 311 slides inside the cylinder body 310. Therefore, when the drone lands to the extreme position, the sliding ball 330 drives the shock absorbing mechanism 300 to slide in the second slide groove 111. At the same time, the two pistons 311 move relative to each other, and the two springs 312 slowly extend following the movement of the pistons 311, thereby preventing the springs 312 from suddenly rebounding after losing pressure, causing repeated oscillations, and preventing the single spring 312 from generating a huge rebound force after being compressed to the extreme position.

[0029] like Figure 1 、 Figure 2 and Figure 3 As shown, the cross-section of the support leg 100 is arc-shaped, and the first chute 110 and the second chute 111 are arranged in an arc shape. When the support leg 100 contacts the ground, it is affected by the curvature of its surface and cooperates with the limit rod 210 to rotate. The first chute 110 and the second chute 111 have the same curvature as the support leg 100. A limit block is set in the relatively high end of the second chute 111. When the drone is in the buffering process, the sliding ball 330 and the sliding rod 331 will move along the second chute 111. When the sliding ball 330 contacts the limit block in the second chute 111, it stops moving. At this time, the tension on the spring 312 is the greatest, the elastic force generated is also the greatest, and the shock absorption effect is the most obvious. The effect of increasing the tension of the spring 312 is enhanced.

[0030] The legs 100 are arranged in pairs, and each group of legs 100 is arranged opposite to each other. When the legs 100 are subjected to the impact of landing, they will expand to both sides along the limit rod 210. At this time, the downward impact of the drone is decomposed into two forces so that the spring 312 can better absorb it.

[0031] When the present invention is in use, when the drone lands and contacts the ground, each set of legs 100 will rotate in opposite directions along the limit rod 210 under the downward impact of the drone, and at the same time decompose the vertical downward force of the drone into two forces along the direction of the legs 100. At the same time, during the rotation of the legs 100, the sliding rod 331 and the sliding ball 330 will slide upward along the second sliding groove 111 while pulling the pistons 311 in the two cylinders 310 to move backward through the fixed block 332. The pistons 311 will compress the springs 312 during the backward movement in the cylinder 310, and the first shock-absorbing effect will be achieved with the help of the elastic force of the springs 312. At the same time, the gas in the cylinder 310 will be squeezed by the piston 311, thereby increasing the pressure in the cylinder 310, and the internal gas will be released. The gas is ejected through the jet valve 340, and the ejected gas will generate an upward thrust, thereby achieving the second shock-absorbing effect. When the downward impulse of the drone disappears, the jet valve 340 is closed, and the compressed spring 312 is reset, generating elastic force, pushing the two pistons 311 to move relative to each other. Because there is resistance when the piston 311 slides in the cylinder 310, the piston 311 drives the spring 312 to slowly reset, reducing the vibration of the spring 312. At the same time, the one-way valve 350 draws air into the cylinder 310. At this time, the two springs 312 cause the two fixed blocks 332 to generate a relative movement force. The fixed blocks 332 drive the sliding rod 331 and the sliding ball 330 to move downward along the second slide groove 111, and at the same time pull each group of legs 100 to rotate relative to each other, so that all legs 100 are reset, completing the shock absorption.

[0032] It should be noted that the spring 312 , the one-way valve 350 , and the jet valve 340 in the above description are all relatively mature devices in existing technology. The specific models can be selected according to actual needs and are not described in detail here.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A shock absorbing and stabilizing device for UAV surveying and mapping equipment, characterized in that: include: Four supporting legs (100) are installed below the frame of the unmanned aerial vehicle surveying and mapping equipment, and a first sliding groove (110) is provided on the surface of the supporting legs (100); A damping mechanism (300) includes two cylinder bodies (310) arranged inside a first chute (110), a connecting pipe (320) communicating between the two cylinder bodies (310), a one-way valve (350) being provided on the surface of each of the two cylinder bodies (310), a plurality of jet valves (340) being provided on the surface of the cylinder body (310), a piston (311) being slidably connected to the inner wall of the cylinder body (310), a spring (312) being provided inside the cylinder body (310), one end of the spring (312) being fixedly connected to the surface of the piston (311) and the other end being fixedly connected to the inner wall of the cylinder body (310).

2. The shock-absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 1, characterized in that: The opposite ends of the two pistons (311) pass through the cylinder body (310), and one end of the piston (311) passing through the cylinder body (310) is fixedly connected to a fixing block (332).

3. The shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 2, characterized in that: The inner wall of the fixed block (332) is rotatably connected to a sliding rod (331), and both ends of the sliding rod (331) are fixedly connected to sliding balls (330).

4. The shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 3, characterized in that: A second sliding groove (111) is provided on the surface of the first sliding groove (110), and the sliding ball (330) is slidably connected to the second sliding groove (111).

5. The shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 1, characterized in that: The top end of each group of legs (100) is rotatably connected to a limiting rod (210), the surface of the limiting rod (210) is rotatably connected to a connecting block (200), and the top end of the connecting block (200) is fixedly connected to the machine body.

6. The shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 1, characterized in that: The cross section of the supporting leg (100) is arc-shaped, and the first sliding groove (110) and the second sliding groove (111) are arranged in an arc shape.

7. The shock absorbing and stabilizing device for unmanned aerial vehicle surveying and mapping equipment according to claim 1, characterized in that: The supporting legs (100) are distributed in groups of two, and the supporting legs (100) in each group are arranged opposite to each other.

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