Geological exploration unmanned aerial vehicle landing shock absorption support

Abstract

The present application relates to unmanned aerial vehicle damping technical field, specifically relates to a kind of geological exploration unmanned aerial vehicle landing shock absorbing support, including the connecting plate of detachable connection with unmanned aerial vehicle and the multiple shock absorbing rods of uniform distribution in the bottom of connecting plate, shock absorbing rod includes the outer cylinder, inner cylinder, support column and the spring one of being set in inner cylinder and being vertically arranged coaxially, the upper end of outer cylinder is connected with connecting plate, the upper end of inner cylinder is closed and extends into outer cylinder and is slidably connected with the inner wall of outer cylinder, the upper end of support column extends into inner cylinder and is sealingly slidably connected with the inner wall of outer cylinder, the upper end of spring one is fixedly connected with the inner wall of closed end of inner cylinder, the lower end of spring one is fixedly connected with the upper end of support column, still include the first limiting mechanism of limiting sliding between support column and inner cylinder and the second limiting mechanism of limiting sliding between inner cylinder and outer cylinder.The present application can make that survey unmanned aerial vehicle lands smoothly, prevent the phenomenon of survey unmanned aerial vehicle tilting and turning over.

Description

Technical Field

[0001] This invention relates to the field of drone vibration reduction technology, specifically to a landing vibration reduction support for a geological exploration drone. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices. In geological exploration, UAVs are often used to conduct aerial surveys of the geological environment. When necessary, they need to land far from the operator to perform drilling and sampling. Since geological exploration takes place in the field, the ground where exploration UAVs land is often sloping or uneven. Existing UAV shock-absorbing brackets only serve as a buffer and cannot guarantee that the UAV will not tilt when landing on sloping or uneven ground. Therefore, exploration UAVs are prone to tipping over and being damaged when landing on sloping or uneven ground in the field. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a landing shock-absorbing support for geological exploration drones, so as to solve the problem that exploration drones are prone to tipping over when landing on tilted or uneven ground in the field.

[0004] To solve the above-mentioned technical problems, the present invention provides a landing shock-absorbing support for a geological exploration UAV, comprising a connecting plate detachably connected to the exploration UAV and multiple shock-absorbing rods evenly distributed at the bottom of the connecting plate. Each shock-absorbing rod includes an outer cylinder, an inner cylinder, a support column, and a spring disposed within the inner cylinder, all coaxially and vertically arranged. The upper end of the outer cylinder is connected to the connecting plate, and the lower end of the outer cylinder is open. An exhaust hole is provided on the upper side wall of the outer cylinder, connecting the inner cavity of the outer cylinder to the external space. The upper end of the inner cylinder is closed and extends into the outer cylinder, slidingly connected to the inner wall of the outer cylinder. The lower end of the inner cylinder is open and extends out of the outer cylinder. The upper end of the support column extends into the inner cylinder and... The inner wall of the inner cylinder is sealed and slidably connected. The upper end of the first spring is fixedly connected to the inner wall of the closed end of the inner cylinder, and the lower end of the first spring is fixedly connected to the upper end of the support column. It also includes a first limiting mechanism that restricts the sliding between the support column and the inner cylinder and a second limiting mechanism that restricts the sliding between the inner cylinder and the outer cylinder. When any of the support columns has not yet contacted the ground, each of the inner cylinders can slide freely relative to the outer cylinder. The first limiting mechanism prevents the support column from sliding deep into the inner cylinder. When all the support columns have contacted the ground, the second limiting mechanism prevents the inner cylinder from sliding deep into the outer cylinder and allows the support column to slide relative to the inner cylinder to compress the first spring.

[0005] In the above scheme, during the landing of the survey drone, if the landing ground is uneven and some support columns touch the ground first, the weight of the survey drone acts on the support columns that touch the ground first. At this time, the inner cylinder slides freely relative to the outer cylinder and the support columns cannot slide into the inner cylinder, thus keeping the connecting plate in a horizontal state. As the support columns that touch the ground first contract and shorten, and then the remaining support columns all touch the ground, the second limiting mechanism prevents the inner cylinder from continuing to slide into the outer cylinder. At this time, all support columns can slide relative to the corresponding inner cylinder to simultaneously compress each of the springs for synchronous buffering and shock absorption, finally allowing the survey drone to land smoothly and preventing the survey drone from tilting or overturning.

[0006] Furthermore, the first limiting mechanism includes an air passage, a slide, a support block, and a tension spring disposed within the support column. The air passage includes a vertical portion and a horizontal portion. The upper end of the vertical portion extends upward through the support column and communicates with the inner cavity of the inner cylinder. One end of the horizontal portion communicates with the external space of the support column, and the other end of the horizontal portion communicates with the vertical portion. The slide is vertically disposed at the lower end of the support column and intersects with the horizontal portion of the air passage. The inner diameter of the slide is larger than the inner diameter of the horizontal portion of the air passage. The upper end of the slide is a blind end, and the lower end of the slide penetrates the lower end face of the support column. The upper end of the support block extends into the slide and is slidably sealed to the inner wall of the slide. The lower end of the support block extends downward out of the slide. The upper end of the tension spring is fixedly connected to the inner wall of the blind end of the slide, and the lower end of the tension spring is fixedly connected to the upper end face of the support block.

[0007] Furthermore, the second limiting mechanism includes an electromagnet disposed at the closed end of the inner cylinder, an air passage two, a slide passage two, a sliding column two, a spring two, a one-way valve, several slide passage three arranged from top to bottom on the inner wall of the outer cylinder, a sliding column three disposed in the slide passage three, a spring three, and a push switch embedded in the inner wall of the blind end of the slide passage one. The lower end of the electromagnet is embedded in the middle of the closed end of the inner cylinder, and the upper end of the electromagnet is located in the inner cavity of the outer cylinder. The air passage two is vertically arranged, with its upper end communicating with the inner cavity of the outer cylinder and its lower end communicating with the inner cavity of the inner cylinder. The slide passage two is arranged radially inside the closed end of the inner cylinder and intersects with the air passage two. The inner diameter of the slide passage two is larger than the inner diameter of the air passage two. The sliding column two is in a sealed sliding connection with the slide passage two. Next, the second spring is disposed in the second slide rail, one end of the second spring is fixedly connected to the second slide column, and the other end of the second spring is fixedly connected to the inner wall of the second slide rail near the electromagnet. Under the elastic force of the second spring, the second slide column is located at the position that blocks the second air passage. The one-way valve is disposed at one end of the second air passage, allowing gas to flow from the inner cavity of the inner cylinder through the second air passage to the inner cavity of the outer cylinder. The third slide rail is disposed radially along the outer cylinder. The end of the third slide rail near the electromagnet penetrates the inner wall of the outer cylinder, and the end of the third slide rail away from the electromagnet is closed. The third slide column is located in the third slide rail and is slidably connected to the third slide rail. One end of the third spring is fixedly connected to the third slide column, and the other end of the third spring is fixedly connected to the inner wall of the closed end of the third slide rail. Under the elastic force of the third spring, the third slide column is entirely located in the third slide rail.

[0008] The electromagnets in each shock absorber rod are connected in parallel and then electrically connected to the drone's battery. The push-button switches in each shock absorber rod are connected in series and then connected in series in the circuit where the electromagnets are electrically connected to the drone's battery.

[0009] Furthermore, the inner wall of the outer cylinder is recessed with a sliding groove in a direction parallel to the axis of the outer cylinder, and the outer wall of the inner cylinder is provided with a slider that slides in cooperation with the sliding groove.

[0010] Furthermore, the connecting plate is a circular plate, and there are three shock-absorbing rods, which are evenly distributed circumferentially on the lower surface of the connecting plate.

[0011] Furthermore, the shock-absorbing rod is hinged to the connecting plate, and the bottom surface of the connecting plate is provided with an electric telescopic rod corresponding to the shock-absorbing rod. One end of the electric telescopic rod is hinged to the connecting plate, and the other end is hinged to the shock-absorbing rod. The electric telescopic rod is wirelessly connected to the drone remote controller. By controlling the retraction of the electric telescopic rod through the drone remote controller, the shock-absorbing rod can be folded horizontally on the bottom surface of the connecting plate to reduce the drag during drone flight. When the drone lands, the control keeps the electric telescopic rod extended, so that the shock-absorbing rod is in a vertical state to maintain a smooth landing for the drone.

[0012] Compared with the prior art, the principles and beneficial effects of the present invention are as follows:

[0013] 1. After fixing the geological exploration drone to the connecting plate, connect the electromagnets in parallel and then connect them to the drone's battery. Operate the remote control to control the drone to take off. When landing is required, operate the drone remote control to control the extension of each electric telescopic rod to make each shock absorber rod in a vertical state. At this time, under its own weight, the support block moves down and is located below the horizontal part, unable to block the horizontal part. Under the elastic force of the tension spring, the support block cannot slide down out of slide track one. At this time, the switch is not pressed by the support block, the electromagnet is not energized and does not generate magnetic attraction. Under the elastic force of spring two, the sliding column two is located at the end of slide track two away from the electromagnet and blocks air passage two. Under the elastic force of spring three, the sliding column three is located in slide track three, allowing the inner cylinder to slide freely up and down inside the outer cylinder.

[0014] The drone is controlled to descend slowly. When the landing ground is uneven, causing some support columns to touch the ground first, the weight of the drone acts on the support block of the support column that touches the ground first. Since the tension spring is set only to prevent the support block from sliding out of the first slide under its own weight, when the weight of the support column acts on the tension spring, the spring is compressed, causing the support block to press and trigger the push switch. At this time, the support block goes deeper into the first slide, blocking the air passage. If at this time there are support columns that do not touch the ground, and a certain push switch is not pressed, the electromagnet is not energized, and the second slide column remains blocking the second air passage. Therefore, the gas in the inner cavity of the inner cylinder cannot be discharged outward, and the support column cannot go deeper into the inner cavity of the inner cylinder. The first spring cannot be compressed and damped. At this time, the support column and the inner cylinder can be regarded as a whole. The weight of the drone first acts on the support column that has already touched the ground, causing the inner cylinder to slide upwards inside the outer cylinder. This shortens the support column that has touched the ground, keeping the connecting plate horizontal. As the support column that has touched the ground first contracts and shortens, and then all the remaining support columns touch the ground, all the interconnected push switches are pressed and triggered, energizing the electromagnet. The electromagnet then generates magnetic force, causing the second slide column to slide closer to the electromagnet, thus opening the second air passage. The gas in the inner cylinder cavity enters the outer cylinder cavity through the second air passage and is discharged to the outside of the outer cylinder through the exhaust port. At the same time, the electromagnet causes the third slide column to slide out of the third slide track and extend into the outer cylinder cavity, blocking the upper end of the inner cylinder and preventing it from sliding upwards. At this time, under the action of the drone's weight, the support column slides and compresses the first spring, which deforms, consuming energy and reducing shock.

[0015] Because the electromagnets on each support column are energized simultaneously, each spring is compressed and buffered to ensure that the connecting plate remains horizontal, thus enabling the reconnaissance drone to land smoothly without tilting or overturning.

[0016] 2. When each spring is compressed to the point where the total elastic force generated by spring 1 is equal to the descent kinetic energy of the drone, spring 1 will no longer be compressed and deformed. At this time, each spring 1 will rebound upward to push the drone upward. However, due to the one-way valve, when air passage 1 is blocked, the gas outside the inner cylinder cannot enter the inner cavity of the inner cylinder through air passage 2. Therefore, the support column cannot slide downward relative to the inner cylinder. In other words, spring 1 cannot force the inner cylinder to slide upward. Therefore, spring 1 cannot make a rebound action to force the connecting plate to drive the drone upward. As a result, the drone will not be rebounded upward after descending to the lowest point, and there will be no phenomenon of the drone swaying up and down after landing, which further improves the stability of landing. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the connection between the shock absorber rod and the connecting plate in this invention.

[0019] Figure 2 for Figure 1 Enlarged view of section A.

[0020] Figure 3 for Figure 1 Enlarged view of section B in the middle.

[0021] Figure 4 for Figure 2 Sectional view of AA.

[0022] Figure 5 This is a bottom view of the present invention.

[0023] Figure 6 This is a schematic diagram of the closed end structure of the inner cylinder after the electromagnet is energized.

[0024] Figure 7 This is a schematic diagram of the circuit connection between the electromagnet and the push-button switch.

[0025] The meanings of the labels in the attached diagram are as follows:

[0026] Connecting plate 10, shock absorber 20, outer cylinder 201, slide rail 3 2011, slide column 3 2012, spring 3 2013, slide groove 2014, retaining ring 1 2015, inner cylinder 202, electromagnet 2021, air passage 2 2022, slide rail 2 2023, slide column 2 2024, spring 2 2025, one-way valve 2026, slider 2027, retaining ring 2 2028, support column 203, air passage 1 2031, vertical part 20311, horizontal part 20312, slide rail 1 2032, support block 2033, tension spring 2034, push switch 2035, spring 1 204, exhaust hole 205, electric telescopic rod 30. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0029] This embodiment describes a landing shock-absorbing support for a geological exploration drone, combined with... Figure 1 , Figure 5As shown, the device includes a connecting plate 10 detachably connected to the reconnaissance drone and multiple shock-absorbing rods 20 evenly distributed on the bottom of the connecting plate 10. In this embodiment, the connecting plate 10 is a circular plate, and three shock-absorbing rods 20 are evenly distributed circumferentially on the lower surface of the connecting plate 10. In other feasible embodiments, other numbers of shock-absorbing rods 20 can be provided as needed, such as four, five, or more. The shock-absorbing rods 20 are hinged to the connecting plate 10. An electric telescopic rod 30 corresponding to the shock-absorbing rod 20 is provided on the bottom surface of the connecting plate 10. One end of the electric telescopic rod 30 is hinged to the connecting plate 10, and the electric telescopic rod extends... The other end of the telescopic rod 30 is hinged to the shock-absorbing rod 20. The electric telescopic rod 30 is electrically connected to the drone's power supply and wirelessly connected to the drone's remote controller. By controlling the telescopic rod 30 to retract, the shock-absorbing rod 20 can be folded horizontally to the bottom of the connecting plate 10 to reduce the drag during drone flight. When the drone lands, the telescopic rod 30 is extended by the drone remote controller to keep the shock-absorbing rod 20 in a vertical position to ensure a smooth landing. The remote controller's wireless control of the telescopic rod's extension and retraction is a mature technology. The telescopic rod's extension and retraction can be controlled by controlling the operation of the electric motor of the telescopic rod, which will not be elaborated here.

[0030] Combination Figures 1 to 4As shown, the shock absorber 20 includes an outer cylinder 201, an inner cylinder 202, a support column 203, and a spring 204 disposed within the inner cylinder 202, all coaxially and vertically arranged. The upper end of the outer cylinder 201 is connected to the connecting plate 10, and the lower end of the outer cylinder 201 is open. The upper side wall of the outer cylinder 201 is provided with an exhaust hole 205 that connects the inner cavity of the outer cylinder 201 with the external space of the outer cylinder 201. The upper end of the inner cylinder 202 is closed and extends into the outer cylinder 201, slidingly connected to the inner wall of the outer cylinder 201. The lower end of the inner cylinder 202 is open and extends out of the outer cylinder 201. The upper end of the support column 203 extends into the inner cylinder 202 and is slidably and sealed to the inner wall of the inner cylinder 202. The upper end of the spring 204 is fixedly connected to the inner wall of the closed end of the inner cylinder 202, and the lower end of the spring 204 is fixedly connected to the upper end of the support column 203. To prevent the inner cylinder 202 from rotating inside the outer cylinder 201, a groove 2014 is recessed on the inner wall of the outer cylinder 201 in a direction parallel to the axis of the outer cylinder 201. A slider 2027 is protruding on the outer wall of the inner cylinder 202, which slides in cooperation with the groove 2014. To prevent the inner cylinder 202 from automatically sliding out of the outer cylinder 201, a circular boss is formed radially outward at the closed end of the inner cylinder 202, which is in a sealing and sliding connection with the inner wall of the outer cylinder 201. The open end of the outer cylinder 201 is screwed with a screw to prevent the inner cylinder 202 from sliding out of the outer cylinder. The inner cavity of the inner cylinder 201 has a retaining ring 2015. The inner wall of the retaining ring 2015 is in a sealed sliding connection with the outer wall of the inner cylinder 202. To prevent the support column 203 from automatically sliding out of the inner cylinder 202, a circular boss is formed on the upper end of the support column 203 in a radially outward protrusion, which is in a sealed sliding connection with the inner wall of the inner cylinder 202. The open end of the inner cylinder 202 is screwed with a retaining ring 2028 to prevent the support column 203 from sliding out of the inner cavity of the inner cylinder 202. The inner wall of the retaining ring 2028 is in a sealed sliding connection with the cylindrical surface of the support.

[0031] This embodiment of a geological exploration UAV landing shock absorption bracket further includes a first limiting mechanism that restricts the sliding between the support column 203 and the inner cylinder 202, and a second limiting mechanism that restricts the sliding between the inner cylinder 202 and the outer cylinder 201. When any of the support columns 203 is not yet in contact with the ground, each of the inner cylinders 202 can slide freely relative to the outer cylinder 201. The first limiting mechanism prevents the support column 203 from sliding deep into the inner cylinder 202. When each of the support columns 203 is in contact with the ground, the second limiting mechanism prevents the inner cylinder 202 from sliding deep into the outer cylinder 201 and allows the support column 203 to slide relative to the inner cylinder 202 to compress the spring 204.

[0032] Specifically, in combination Figures 1 to 4As shown, the first limiting mechanism includes an air passage 2031, a slide 2032, a support block 2033, and a tension spring 2034 disposed within the support column 203. The air passage 2031 includes a vertical portion 20311 and a horizontal portion 20312. The upper end of the vertical portion 20311 extends upward through the support column 203 and communicates with the inner cavity of the inner cylinder 202. One end of the horizontal portion 20312 communicates with the external space of the support column 203, and the other end of the horizontal portion 20312 communicates with the vertical portion 20311. The slide 2032 is vertically disposed at the lower end of the support column 203 and... The slide 2032 is connected to the horizontal part 20312 of the air passage 2031. The inner diameter of the slide 2032 is larger than the inner diameter of the horizontal part 20312 of the air passage 2031. The upper end of the slide 2032 is a blind end. The lower end of the slide 2032 penetrates the lower end face of the support column 203. The upper end of the support block 2033 extends into the slide 2032 and is slidably and sealed to the inner wall of the slide 2032. The lower end of the support block 2033 extends downward out of the slide 2032. The upper end of the tension spring 2034 is fixedly connected to the inner wall of the blind end of the slide 2032. The lower end of the tension spring 2034 is fixedly connected to the upper end face of the support block 2033.

[0033] The second limiting mechanism includes an electromagnet 2021 disposed at the closed end of the inner cylinder 202, an air passage 2022, a slide 2023, a slide column 2024, a spring 2025, a one-way valve 2026, several slide columns 2011 arranged from top to bottom on the inner wall of the outer cylinder 201, slide columns 2012 and springs 2013 disposed within the slide columns 2011, and a push switch 2035 embedded in the inner wall of the blind end of the slide column 2032. The lower end of the electromagnet 2021 is embedded in the middle of the closed end of the inner cylinder 202, and the upper end of the electromagnet 2021 is located in the inner part of the outer cylinder 201. Inside the cavity, the second air passage 2022 is vertically arranged. The upper end of the second air passage 2022 communicates with the inner cavity of the outer cylinder 201, and the lower end of the second air passage 2022 communicates with the inner cavity of the inner cylinder 202. The second slide 2023 is arranged radially along the inner cylinder 202 inside the closed end of the inner cylinder 202 and intersects with the second air passage 2022. The inner diameter of the second slide 2023 is larger than the inner diameter of the second air passage 2022. The second sliding column 2024 is slidably connected to the second slide 2023. The second spring 2025 is disposed inside the second slide 2023, and one end of the second spring 2025 is connected to the second sliding column 2024. 24. A fixed connection is made, with the other end of spring 2025 fixedly connected to slide 2023 near the inner wall of electromagnet 2021. Under the elastic force of spring 2025, slide 2024 is positioned to block air passage 2022. One-way valve 2026 is located at one end of air passage 2022, allowing gas to flow from the inner cavity of inner cylinder 202 through air passage 2022 to the inner cavity of outer cylinder 201. Slide 3 2011 is arranged radially along outer cylinder 201. The end of slide 3 2011 near electromagnet 2021 penetrates the inner wall of outer cylinder 201, while slide 3 2011 is away from electromagnet 2021. One end of the slide column 2012 is closed. The slide column 2012 is located inside the slide rail 2011 and is slidably connected to the slide rail 2011. In order to allow the slide column 2012 to slide freely inside the slide rail 2011, a gap is left between the outer wall of the slide column 2012 and the inner wall of the slide rail 2011. The spring 2013 is horizontally set inside the slide rail 2011. One end of the spring 2013 is fixedly connected to the slide column 2012, and the other end of the spring 2013 is fixedly connected to the inner wall of the closed end of the slide rail 2011. Under the elastic force of the spring 2013, the slide column 2012 is entirely located inside the slide rail 2011.

[0034] like Figure 7 As shown, the electromagnets 2021 in each of the shock-absorbing rods 20 are connected in parallel and then electrically connected to the drone's battery. The push switches 2035 in each of the shock-absorbing rods 20 are connected in series and then connected in series in the circuit where the electromagnets 2021 are electrically connected to the drone's battery.

[0035] In use, the geological exploration drone is fixed to the upper surface of the connecting plate 10, and the electromagnets 2021 are connected in parallel and electrically connected to the drone's battery. The drone is then remotely controlled to take off. When landing is required, the drone remote controller extends the electric telescopic rods 30 to make the shock absorber rods 20 vertical. At this time, under its own weight, the support block 2033 moves down and is located below the horizontal part 20312, unable to block the horizontal part 20312. Under the elastic force of the tension spring 2034, the support block 2033 is supported. When the support block 2033 cannot slide down out of the slide rail 2032, the switch 2035 is not pressed by the support block 2033, the electromagnet 2021 is not energized and does not generate magnetic attraction. The elastic force of the spring 2025 causes the sliding column 2024 to be located at the end of the slide rail 2023 away from the electromagnet 2021 and to block the air passage 2022. The elastic force of the spring 3013 causes the sliding column 3012 to be located in the slide rail 3011, allowing the inner cylinder 202 to slide freely up and down inside the outer cylinder 201.

[0036] The drone is controlled to descend slowly. When the landing ground is uneven, causing part of the support column 203 to touch the ground first, the weight of the drone acts on the support block 2033 on the support column 203 that touches the ground first. The tension of the spring 2034 is set only to prevent the support block 2033 from sliding out of the slide rail 2032 under its own weight. When the weight of the support column 203 acts on the spring 2034, the spring 2034 is compressed, causing the support block 2033 to press and trigger the push switch 2035. At this time, the support block 2033 penetrates into the slide rail 2032 and blocks the air passage 2031. If there is a support column 2033 at this time... 3. If the drone is not in contact with the ground, and one of the push switches 2035 is not pressed, the electromagnet 2021 is not energized, and the sliding column 2024 remains blocked from the air passage 2022. Therefore, the gas inside the inner cylinder 202 cannot escape, and the support column 203 cannot penetrate deep into the inner cylinder 202. The spring 204 cannot be compressed for shock absorption. At this point, the support column 203 and the inner cylinder 202 can be considered as a single unit. The weight of the drone first acts on the support column 203 that is already in contact with the ground, causing the inner cylinder 202 to slide upwards within the outer cylinder 201, shortening the support column 203 in contact with the ground to keep the connecting plate 10 in a horizontal state. Figure 6As shown, when the support column 203 that first contacts the ground contracts and shortens, and then all the other support columns 203 contact the ground, the push switches 2035 connected in series on each support column 203 are pressed and triggered, energizing the electromagnet 2021. The electromagnet 2021 then generates magnetic force, causing the second slide column 2024 to slide closer to the electromagnet 2021, thus opening the second air passage 2022. The gas in the inner cavity of the inner cylinder 202 enters the inner cavity of the outer cylinder 201 through the second air passage 2022 and is discharged to the outside of the outer cylinder 201 through the exhaust port 205. At the same time, the electromagnet 2021 causes the third slide column 2012 to slide out of the third slide track 2011 and extend into the inner cavity of the outer cylinder 201, blocking the upper end of the inner cylinder 202 and preventing the inner cylinder 202 from sliding upward. At this time, under the action of the weight of the UAV, the support column 203 slides and compresses the first spring 204, deforming and consuming energy to reduce shock.

[0037] Since the electromagnets 2021 on each support column 203 are energized at the same time, each spring 204 is compressed and buffered to ensure that the connecting plate 10 is always in a horizontal state, so that the reconnaissance drone lands smoothly without tilting or overturning.

[0038] When each spring 204 is compressed to the point where the total elastic force generated by each spring 204 is equal to the kinetic energy of the drone's descent, each spring 204 will no longer be compressed and deformed. At this point, each spring 204 will rebound upwards to push the connecting plate 10 upwards. However, due to the one-way valve 2026, when the air passage 2031 is blocked, the gas outside the inner cylinder 202 cannot enter the inner cavity of the inner cylinder 202 through the air passage 2022. Therefore, the support column 203 cannot slide downwards relative to the inner cylinder 202, which means that the spring 204 cannot force the inner cylinder 202 to slide upwards. As a result, the spring 204 cannot rebound to force the connecting plate 10 to move the drone upwards. Consequently, the drone will not rebound upwards after descending to the lowest point, and there will be no up-and-down swaying phenomenon after the drone lands, thus further improving the stability of the landing.

[0039] The above are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A landing shock-absorbing support for a geological exploration UAV, comprising a connecting plate detachably connected to the exploration UAV and a plurality of shock-absorbing rods evenly distributed at the bottom of the connecting plate, characterized in that: The shock absorber includes an outer cylinder, an inner cylinder, a support column, and a spring disposed inside the inner cylinder, all coaxially and vertically arranged. The upper end of the outer cylinder is connected to the connecting plate, and the lower end of the outer cylinder is open. The upper side wall of the outer cylinder is provided with an exhaust hole that connects the inner cavity of the outer cylinder with the external space of the outer cylinder. The upper end of the inner cylinder is closed and extends into the outer cylinder, slidingly connected to the inner wall of the outer cylinder. The lower end of the inner cylinder is open and extends out of the outer cylinder. The upper end of the support column extends into the inner cylinder and is sealed and slidably connected to the inner wall of the inner cylinder. The upper end of the spring is fixedly connected to the inner wall of the closed end of the inner cylinder, and the lower end of the spring is fixedly connected to the upper end of the support column. It also includes a first limiting mechanism that restricts relative sliding between the support column and the inner cylinder, and a second limiting mechanism that restricts relative sliding between the inner cylinder and the outer cylinder. When any of the support columns is not yet in contact with the ground, each inner cylinder can slide freely relative to the outer cylinder. The first limiting mechanism prevents the support column from sliding deep into the inner cylinder. When each support column is in contact with the ground, the second limiting mechanism prevents the inner cylinder from sliding deep into the outer cylinder and allows the support column to slide relative to the inner cylinder to compress the spring. The first limiting mechanism includes an air passage, a slide, a support block, and a tension spring disposed within the support column. The air passage includes a vertical part and a horizontal part. The upper end of the vertical part extends upward through the support column and communicates with the inner cavity of the inner cylinder. One end of the horizontal part communicates with the external space of the support column, and the other end of the horizontal part communicates with the vertical part. The slide is vertically disposed at the lower end of the support column and intersects with the horizontal part of the air passage. The inner diameter of the slide is larger than the inner diameter of the horizontal part of the air passage. The upper end of the slide is a blind end, and the lower end of the slide penetrates the lower end face of the support column. The upper end of the support block extends into the slide and is slidably sealed to the inner wall of the slide. The lower end of the support block extends downward outside the slide. The upper end of the tension spring is fixedly connected to the inner wall of the blind end of the slide, and the lower end of the tension spring is fixedly connected to the upper end face of the support block. The second limiting mechanism includes an electromagnet disposed at the closed end of the inner cylinder, an air passage two, a slide passage two, a sliding column two, a spring two, a one-way valve, several slide passage three arranged from top to bottom on the inner wall of the outer cylinder, sliding columns three disposed within the slide passage three, spring three, and a push switch embedded in the inner wall of the blind end of the slide passage one. The lower end of the electromagnet is embedded in the middle of the closed end of the inner cylinder, and the upper end of the electromagnet is located in the inner cavity of the outer cylinder. The air passage two is vertically arranged, with its upper end communicating with the inner cavity of the outer cylinder and its lower end communicating with the inner cavity of the inner cylinder. The slide passage two is arranged radially along the inner cylinder inside the closed end of the inner cylinder and intersects and communicates with the air passage two. The inner diameter of the slide passage two is larger than the inner diameter of the air passage two. The sliding column two is in a sealed sliding connection with the slide passage two. The second spring is disposed within the second slide rail. One end of the second spring is fixedly connected to the second slide column, and the other end of the second spring is fixedly connected to the inner wall of the second slide rail near the electromagnet. Under the elastic force of the second spring, the second slide column is positioned to block the second air passage. The one-way valve is disposed at one end of the second air passage, allowing gas to flow from the inner cavity of the inner cylinder through the second air passage to the inner cavity of the outer cylinder. The third slide rail is disposed radially along the outer cylinder. The end of the third slide rail near the electromagnet penetrates the inner wall of the outer cylinder, and the end of the third slide rail away from the electromagnet is closed. The third slide column is disposed within the third slide rail and is slidably connected to the third slide rail. One end of the third spring is fixedly connected to the third slide column, and the other end of the third spring is fixedly connected to the inner wall of the closed end of the third slide rail. Under the elastic force of the third spring, the third slide column is entirely disposed within the third slide rail. The electromagnets in each shock absorber rod are connected in parallel and then electrically connected to the drone's battery. The push-button switches in each shock absorber rod are connected in series and then connected in series in the circuit where the electromagnets are electrically connected to the drone's battery.

2. The landing shock-absorbing support for geological exploration UAVs as described in claim 1, characterized in that: The inner wall of the outer cylinder is recessed with a sliding groove in a direction parallel to the axis of the outer cylinder, and the outer wall of the inner cylinder is provided with a slider that slides in cooperation with the sliding groove.

3. The landing shock-absorbing support for geological exploration UAVs as described in any one of claims 1-2, characterized in that: The connecting plate is a circular plate, and there are three shock-absorbing rods, which are evenly distributed around the lower surface of the connecting plate.

4. The landing shock-absorbing support for geological exploration UAVs as described in claim 3, characterized in that: The shock absorber rod is hinged to the connecting plate. The bottom surface of the connecting plate is provided with an electric telescopic rod corresponding to the shock absorber rod. One end of the electric telescopic rod is hinged to the connecting plate, and the other end of the electric telescopic rod is hinged to the shock absorber rod.

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