A drone landing device

Abstract

The application discloses an unmanned aerial vehicle landing device, which belongs to the technical field of unmanned aerial vehicles.The device comprises a base plate arranged on the standing feet at the bottom of the unmanned aerial vehicle, the upper end face of the base plate is symmetrically provided with a fixing sleeve for the end part of the standing feet to penetrate, and a limiting arc plate for abutting against the surface of the standing feet is arranged in the two fixing sleeves;the lower end face of the base plate is provided with a landing plate, the upper end face of the landing plate is fixed with a plurality of movable columns, the bottom of the base plate is correspondingly fixed with a plurality of cylinder bodies, the top end of the movable column is vertically arranged in the corresponding cylinder body, and a piston is fixed in the cylinder body, and the cylinder body is filled with damping medium for the piston to extrude.The application has the beneficial effects that the unmanned aerial vehicle landing device is provided, which not only provides a high-performance general buffer solution ready for use for the existing unmanned aerial vehicle, but also realizes the multiple advantages of protecting the machine body, adapting to complex terrains and being convenient to maintain through fluid buffering and modular design, and the overall use effect is good.

Description

Technical Field

[0001] This application relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to a UAV landing device. Background Technology

[0002] Currently, especially when drones land on complex terrain or hard surfaces, their landing gear (or "footings") are mostly simple in structure, relying only on the limited deformation of the material itself for cushioning. As a result, under a large impact force, the impact energy is directly transferred to the fuselage frame and precision equipment, which can easily cause structural damage or equipment failure.

[0003] In addition, existing cushioning designs (such as simple springs or rubber pads) have limited damping characteristics and cannot intelligently adjust the cushioning force according to the landing impact speed. They may be too stiff during gentle landings and insufficient during heavy loads or high-speed impacts.

[0004] Therefore, this application proposes a drone landing device to solve the above-mentioned technical problems. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of this application is to address the shortcomings of existing technologies by providing a drone landing device that solves the problems of limited buffering performance and inability to intelligently adjust damping according to the landing impact intensity.

[0007] To achieve the above objectives, this application provides the following technical solution: A drone landing device includes a base plate disposed on a foot at the bottom of the drone. The upper end face of the base plate is symmetrically provided with fixing sleeves for the ends of the foot to pass through. Each of the two fixing sleeves is provided with a limiting arc plate for abutting against the surface of the foot. The lower end face of the substrate is provided with a landing plate, the upper end face of the landing plate is fixed with multiple movable columns, the bottom of the substrate is fixed with multiple cylinders, the top of the movable column is vertically corresponding to the cylinder and a piston is fixed therein, and the cylinder is filled with a damping medium for the piston to squeeze.

[0008] Furthermore, a vertical stud is threaded through the upper end face of the fixing sleeve, and the lower end of the stud is rotatably connected to the top end of the limiting arc plate.

[0009] Furthermore, the two ends of the limiting arc plate are vertically slidably engaged with the inner walls of the two sides of the fixing sleeve.

[0010] Furthermore, a groove is provided on the lower end face of the landing plate, and a buffer pad is snapped into the groove.

[0011] Furthermore, the cushioning pad is one of the following: anti-slip rubber bottom, hard wear-resistant nylon bottom, and soft textured bottom.

[0012] Furthermore, the piston is slidably placed inside the cylinder, and the piston has several through damping holes.

[0013] Furthermore, the damping medium is a shear-thickening non-Newtonian fluid, and its components include polyethylene glycol and silica nanoparticles.

[0014] The beneficial effects of this application are as follows: In the above solution, through the cooperation of the fixing sleeve at the upper end of the base plate, the limiting arc plate that is slidably arranged inside it, and the stud that is rotatably connected to the arc plate, the arc plate can be driven to fit tightly against the surface of the foot with different diameters simply by turning the stud, so that quick, universal and non-destructive installation and fixing can be achieved without tools. In the above scheme, through the cooperation of the cylinder fixed at the bottom of the base plate, the movable column connected to the landing plate, the piston at the end of the column, and the shear-thickening non-Newtonian fluid filled in the cylinder, the fluid can be thickened to generate great damping at the moment of landing impact, while maintaining flow when subjected to gentle force, thus achieving the effect of adaptive adjustment according to the impact intensity and intelligent and efficient buffering and energy absorption. In the above solution, the groove on the lower end face of the landing plate is engaged with the cushioning pads of various materials, which allows for quick replacement of the corresponding soles according to different working conditions such as sand, snow or hard ground. This enhances terrain adaptability and modularizes vulnerable parts to reduce maintenance costs.

[0015] In summary, this device not only provides a high-performance, universal buffer solution for existing UAVs that is ready to use, but also achieves multiple advantages such as protecting the airframe, adapting to complex terrain, and facilitating maintenance through fluid buffering and modular design, resulting in good overall performance. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram: Figure 1This is a structural diagram of the present application when applied to an unmanned aerial vehicle; Figure 2 This is a schematic diagram of the structure of this application; Figure 3 This is a schematic diagram of the internal structure of this application; Figure 4 This is a schematic diagram of the internal structure of the cylinder block of this application.

[0019] 1. Unmanned Aerial Vehicle (UAV); 101. Foot; 2. Baseboard; 201. Fixing Sleeve; 202. Limiting Arc Plate; 203. Stud; 3. Landing Plate; 301. Buffer Pad; 4. Moving Column; 401. Piston; 402. Damping Hole; 5. Cylinder; 501. Damping Medium. Detailed Implementation

[0020] The UAV landing device provided in this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0021] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0022] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0023] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1-4As shown, this utility model provides a drone landing device, including a horizontally arranged base plate 2, which serves as the supporting frame of the entire device. Two cylindrical fixing sleeves 201 are symmetrically fixed to the left and right ends of the upper surface of the base plate 2. The inner diameter of these two fixing sleeves 201 is slightly larger than the outer diameter of a common drone foot 101, allowing the bottom crossbars of the feet 101 on both sides of the drone to be horizontally inserted into them. To achieve universal locking for feet 101 of different diameters, a vertically sliding limiting arc plate 202 is provided inside each fixing sleeve 201. The concave arc surface of the limiting arc plate 202 is designed to fit against the cylindrical surface of the foot 101. The two side edges of the limiting arc plate 202 cooperate with vertical sliding grooves machined on the inner wall of the fixing sleeve 201, ensuring that it can only slide up and down. A vertical stud 203 is threaded through the top center of the fixing sleeve 201. The lower end of the stud 203 is rotatably connected to the top center of the limiting arc plate 202 via a bearing structure. When the stud 203 is screwed on, its downward movement pushes the limiting arc plate 202 down along the slide groove, thereby pressing against the surface of the inserted foot 101 to achieve a secure and non-destructive installation. Unscrewing the stud 203 in the opposite direction releases the lock and facilitates disassembly.

[0025] Below the base plate 2, at least two vertically downward-facing cylinders 5 are fixedly installed (five cylinders 5 are provided in this utility model). Below the base plate 2, a horizontal landing plate 3 is provided, corresponding to the cylinders 5. On the upper surface of the landing plate 3, which is parallel to the base plate 2, the same number of vertically upward-facing movable columns 4 are fixed. The top of each movable column 4 extends precisely into the interior of a corresponding cylinder 5, and a piston 401 is fixedly installed at its end. The outer periphery of the piston 401 and the inner wall of the cylinder 5 are precisely fitted with a clearance, ensuring smooth relative sliding while also ensuring a tight seal through a sealing ring (not shown in the figure) installed in the groove of the piston 401 or at the port of the cylinder 5. Multiple vertically penetrating damping holes 402 are formed on the surface of the piston 401. All the chambers above the piston 401 in the cylinders 5 are filled with a specific damping medium 501. In this embodiment, a shear-thickening non-Newtonian fluid is preferably used, such as a composite material composed of polyethylene glycol-based liquid and uniformly dispersed silica nanoparticles. When the drone 1 lands, the impact force is transmitted to the base plate 2 through the foot 101, causing the base plate 2 to drive the cylinder 5 to move downward relative to the landing plate 3 and the movable column 4. The piston 401 then squeezes the damping medium 501 upward within the cylinder 5. During low-speed, gentle compression, the medium 501 has good fluidity and can pass through the damping hole 402 relatively smoothly, providing gentle cushioning. During high-speed, violent impact, the medium 501 undergoes instantaneous shear thickening, and its viscosity increases sharply, greatly hindering its passage through the damping hole 402, thereby generating extremely high damping force and efficiently absorbing and dissipating impact energy.

[0026] The lower end face of the landing plate 3 is machined with a groove, and a buffer pad 301 of matching material and shape is securely installed in this groove by interference fit or snap-fit. The buffer pad 301, as a wear-prone and functional component, can be quickly replaced according to the actual terrain. For example, a high-friction coefficient anti-slip rubber sole can be used for regular hard surfaces, a wear-resistant hard nylon sole for rough gravel surfaces, or a soft, raised-surface sole to increase the contact area for soft surfaces such as snow and mud.

[0027] Working principle: In use, the payload of the UAV 1 is transferred to the base plate 2 through the clamped foot 101, then buffered by the intelligent buffer mechanism composed of the movable column 4 and the cylinder 5, and finally contacts the ground through the buffer pad 301 at the bottom of the landing plate 3. Its overall structure is compact and easy to assemble and disassemble. Through the synergistic effect of mechanical locking, fluid intelligent damping, and modular sole, it effectively solves the technical problems of insufficient buffering, lack of self-adaptability, and poor terrain adaptability of traditional landing gear.

[0028] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0029] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0030] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A landing device for an unmanned aerial vehicle (UAV), comprising a base plate (2) disposed on a foot (101) at the bottom of the UAV (1): characterized in that: The upper end face of the substrate (2) is symmetrically provided with fixing sleeves (201) for the end of the foot (101) to pass through. Each of the two fixing sleeves (201) is provided with a limiting arc plate (202) for abutting against the surface of the foot (101). The lower end face of the substrate (2) is provided with a landing plate (3), and the upper end face of the landing plate (3) is fixed with a plurality of movable columns (4). The bottom of the substrate (2) is correspondingly fixed with a plurality of cylinders (5). The top of the movable column (4) is vertically corresponding to the cylinder (5) and a piston (401) is fixed therein. The cylinder (5) is filled with a damping medium (501) for the piston (401) to squeeze.

2. The unmanned aerial vehicle (UAV) landing device according to claim 1, characterized in that: The upper end face of the fixed sleeve (201) is threaded with a vertical stud (203), and the lower end of the stud (203) is rotatably connected to the top end of the limiting arc plate (202).

3. The unmanned aerial vehicle (UAV) landing device according to claim 2, characterized in that: The two ends of the limiting arc plate (202) are vertically slidingly engaged with the inner walls of both sides of the fixing sleeve (201).

4. The unmanned aerial vehicle (UAV) landing device according to claim 1, characterized in that: The lower end face of the landing plate (3) is provided with a groove, and a buffer pad (301) is snapped into the groove.

5. The unmanned aerial vehicle landing device according to claim 4, characterized in that: The cushioning pad (301) is one of the following: anti-slip rubber bottom, hard wear-resistant nylon bottom, and soft textured bottom.

6. The unmanned aerial vehicle landing device according to claim 1, characterized in that: The piston (401) is slidably placed inside the cylinder (5), and the piston (401) has several through damping holes (402).

7. The unmanned aerial vehicle (UAV) landing device according to claim 1, characterized in that: The damping medium (501) is a shear-thickening non-Newtonian fluid, and its components include polyethylene glycol and silica nanoparticles.

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