A net recovery device for small unmanned aerial vehicles

Abstract

The utility model provides an innovative design's net recovery device for ground recovery unmanned plane is used to solve the low recovery efficiency and low recovery precision of the existing unmanned plane in various field recovery. It utilizes the drag net body, sliding block connecting rod mechanism and damping buffer to absorb the kinetic energy of the unmanned plane landing and provide elastic buffer, reduces the impact on the body when recovering, the light weight design of the net body and the self locking protection design after recovery improve the safety of recovery.

Description

Technical Field

[0001] This utility model relates to a net-collision recovery device for small unmanned aerial vehicles (UAVs). Background Technology

[0002] Existing landing and recovery methods for small drones mainly include runway landing and parachute recovery. Runway landing has high requirements for runways and poor adaptability to the field. Parachute recovery is easily affected by weather conditions, and the recovery accuracy is low under strong wind conditions. The drone structure is easily damaged, which is not conducive to efficient recovery in general field sites. Utility Model Content

[0003] To address the problems of existing technologies, the inventors have proposed an innovative net-collision recovery device for small unmanned aerial vehicles (UAVs). This device enables precise landing and recovery of small UAVs, provides elastic cushioning for the UAVs, reduces safety risks during landing, and minimizes dependence on landing sites.

[0004] According to one aspect of the present invention, a small unmanned aerial vehicle (UAV) net-collision recovery device is provided, characterized in that it comprises:

[0005] Barrier netting,

[0006] Two support and buffer devices, each including: an upper pipe clamp, an upper connecting rod, a slider, a lower connecting rod, a linear damper, a lower pipe clamp, a lower support pipe, a bracket, a support base, an upper support pipe, a slide rail, a slide rail plug, a buffer block, a baffle, a side pull rope, a front pull rope, and a base square tube.

[0007] in:

[0008] The root of the upper support tube is connected to the upper end of the upper tube clamp, and the lower end of the upper tube clamp is connected to the upper end of the linear damper, the upper end of the bracket, and the upper end of the upper connecting rod, respectively.

[0009] The upper and lower ends of the slider are connected to the upper connecting rod and the lower connecting rod, respectively.

[0010] The slider has a central opening through which it passes and can slide. Its two furthest points can move to contact the buffer block and the slide rail plug, respectively.

[0011] The buffer block is fixed at the root of the slide rail.

[0012] The upper end of the lower pipe clamp is connected to the lower end of the linear damper, the middle of the bracket, and the lower end of the lower connecting rod.

[0013] The root of the lower support pipe is connected to the lower end of the lower pipe clamp.

[0014] The lower end of the bracket is connected to the support base.

[0015] The upper ends of the side pull rope and the front pull rope are respectively connected to two perforated lugs on the side of the bracket, and the lower ends of the side pull rope are connected to the ground via ground nails.

[0016] The square tube base is bolted to the support base.

[0017] The barrier net is used to catch the wings and provide cushioning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a net-collision recovery device for a small unmanned aerial vehicle according to an embodiment of the present invention.

[0019] Figure 2 This is a front view of a net-collision recovery device for a small unmanned aerial vehicle according to an embodiment of the present invention.

[0020] Figure 3 This describes the process of a small unmanned aerial vehicle (UAV) hitting a net in a net-recovery device according to an embodiment of the present invention.

[0021] Figure 4 This is the drone net collision termination state of a small drone net collision recovery device according to an embodiment of the present utility model.

[0022] Figure 5 This is a partial view of the support buffer device of a net-collision recovery device for a small unmanned aerial vehicle according to an embodiment of the present invention.

[0023] Figure 6 This is an overall view of the support and buffer device of a small unmanned aerial vehicle (UAV) net-collision recovery device according to an embodiment of the present invention.

[0024] Figure 7 The barrier net of the net recovery device for a small unmanned aerial vehicle according to an embodiment of the present invention can be disassembled into three sections. Detailed Implementation

[0025] The embodiments of this utility model will be described below with reference to the accompanying drawings.

[0026] like Figures 1 to 7 As shown, a small drone net-collision recovery device according to an embodiment of the present invention includes:

[0027] Barrier net body 2 and two supporting buffer devices,

[0028] like Figure 5As shown, the support and buffer device includes: upper pipe clamp 3, upper connecting rod 4, slider 5, lower connecting rod 6, linear damper 7, lower pipe clamp 8, lower support pipe 9, bracket 10, support base 11, upper support pipe 12, slide rail 13, slide rail plug 14, buffer block 15, baffle 16, side pull rope 17, front pull rope 18, and base square tube 19.

[0029] The upper support tube 12 is connected to the upper end of the upper tube clamp 3, and the lower end of the upper tube clamp 3 is connected to the upper end of the linear damper 7, the upper end of the bracket 10 and the upper end of the upper connecting rod 4 respectively.

[0030] The upper and lower ends of slider 5 are connected to upper connecting rod 4 and lower connecting rod 6, respectively.

[0031] The central opening of slider 5 passes through slide rail 13 and can be moved along... Figure 5 It can slide left and right, and the left and right ends of the slide can move to contact the buffer block 15 and the slide rail plug 14 respectively.

[0032] The buffer block 15 is fixed to the root of the slide rail and is made of, for example, polyurethane material.

[0033] The upper end of the lower pipe clamp 8 is connected to the lower end of the linear damper 7, the middle part of the bracket 10, and the lower end of the lower connecting rod 6, respectively.

[0034] The root of the lower support 9 is connected to the lower end of the lower pipe clamp 8.

[0035] The lower end of the bracket 10 is connected to the support base 11.

[0036] The upper ends of the side pull rope 17 and the front pull rope 18 are respectively connected to two perforated lugs 10-a and 10-b on the side of the bracket 10, and the lower ends are connected to the ground through ground nails 20.

[0037] The base square tube 19 is bolted to the support base 11. The outer end of the base square tube 19 has a hole, which can be used to fix it to the ground by inserting ground nails.

[0038] According to one embodiment of this utility model, the barrier net 2 includes an upper transverse fabric strip 2-a, a lower transverse fabric strip 2-c, and several vertical fabric strips 2-b, all made of, for example, nylon. The upper and lower ends of the vertical fabric strips 2-b are sewn onto the upper and lower transverse fabric strips, respectively. The upper transverse fabric strip 2-a and the lower transverse fabric strip 2-c are respectively connected to the tips of the upper support tube 12 and the lower support tube 9 of the two supporting buffer devices and are tensioned. The barrier net 2 is used to catch the wing for cushioning.

[0039] During the drone recovery process, a net-based recovery device is vertically positioned and opened on the ground along the landing path of drone 1. At this point, the net 2 is fully open and perpendicular to the ground. Under the control of the flight control system, drone 1 first impacts the middle of the net 2 and continues to slide forward due to inertia. This impact is transmitted to the upper and lower support tubes of the support and buffer device via the upper and lower transverse straps of the net 2. The support tubes, under pressure, pull the upper and lower clamps 3 and 8 inward, stretching the linear damper 7 to absorb energy. In one embodiment, the linear damper 7 can be automatically controlled based on the weight and flight speed of the drone to be recovered; in another embodiment, the damping value and feedback control conditions of the linear damper 7 are preset. Simultaneously, the upper and lower clamps 3 and 8 drive the connecting rod, causing the slider 5 to move from one end of the slide rail plug 14 along the slide rail 13 towards the buffer block 15, locking the support and buffer device. At this point, the net 2 is pocket-shaped, completely enclosing the drone 1 after its flight. Finally, ground operators remove it to complete the recovery.

[0040] According to a specific embodiment, such as Figure 7 As shown, the barrier net can be disassembled into three sections: 2-1, 2-2, and 2-3.

[0041] The advantages and / or beneficial effects of this utility model include:

[0042] 1) A solution with multiple buffer components is provided.

[0043] The impact recovery device of this utility model adopts a multi-component energy absorption system consisting of a barrier net, a linear damper, and a slider linkage system, which effectively absorbs the impact energy of the UAV and achieves fixed-point recovery.

[0044] 2) A lightweight barrier net body is provided.

[0045] The barrier netting is designed to be detachable in sections (the barrier netting can be disassembled into three sections, namely...). Figure 7 The 2-1, 2-2, and 2-3 sections allow for the installation and removal of the fabric strips to extend or shorten the length of the barrier net, depending on the available space and the dimensions of the UAV. The use of lightweight fabric strip materials and weaving methods significantly reduces the weight of the barrier net system, enabling it to be easily and quickly retracted and deployed, thus effectively improving operation and maintenance efficiency.

[0046] 3) The adaptability of the recycling operation is improved by adopting an automated linear damper.

[0047] The linear damper of this invention adopts an intelligently controllable and parameter-adjustable device, which can conveniently adjust and preset the damping value to meet the recovery needs of drones of different sizes and weights. There is no need to replace the linear damper, which effectively improves the applicability and efficiency of the recovery device.

[0048] 4) A self-locking protection design scheme is provided.

[0049] The proposed net-collision recovery device adopts a self-locking protection design. After the drone is captured by the net, the upper and lower clamps rotate inward, causing the net to wrap around the drone. Without external force, the blocking mechanism will not move in the opposite direction, causing the net to open, thus improving the safety and reliability of the recovery process.

Claims

1. A net-collision recovery device for a small unmanned aerial vehicle, characterized in that... include: Barrier net (2). Two support and buffer devices, each including: upper pipe clamp (3), upper connecting rod (4), slider (5), lower connecting rod (6), linear damper (7), lower pipe clamp (8), lower support pipe (9), bracket (10), support base (11), upper support pipe (12), slide rail (13), slide rail plug (14), buffer block (15), baffle (16), side pull rope (17), front pull rope (18), and base square tube (19). in: The root of the upper support tube (12) is connected to the upper end of the upper tube clamp (3), and the lower end of the upper tube clamp (3) is connected to the upper end of the linear damper (7), the upper end of the bracket (10), and the upper end of the upper connecting rod (4), respectively. The upper and lower ends of the slider (5) are connected to the upper connecting rod (4) and the lower connecting rod (6) respectively. The middle opening of the slider (5) passes through the slide rail (13) and can slide. The two farthest ends of the slider can move to contact the buffer block (15) and the slide rail plug (14) respectively. The buffer block (15) is fixed at the root of the slide rail. The upper end of the lower pipe clamp (8) is connected to the lower end of the linear damper (7), the middle part of the bracket (10), and the lower end of the lower connecting rod (6). The root of the lower support pipe (9) is connected to the lower end of the lower pipe clamp (8). The lower end of the bracket (10) is connected to the support base (11). The upper ends of the side pull rope (17) and the front pull rope (18) are respectively connected to two perforated lugs (10-a, 10-b) on the side of the bracket (10), and the lower end of the side pull rope (17) is connected to the ground through a ground nail (20). The square tube at the base (19) is connected to the support base (11) by bolts. The barrier net (2) is used to catch the wings for cushioning.

2. The net-collision recovery device for a small unmanned aerial vehicle according to claim 1, characterized in that: The barrier net (2) includes an upper horizontal strip (2-a), a lower horizontal strip (2-c), and several vertical strips (2-b). The upper and lower ends of the vertical fabric strip (2-b) are sewn onto the upper and lower horizontal fabric strips, respectively. The upper transverse fabric strip (2-a) and the lower transverse fabric strip (2-c) are connected to the ends of the upper support tube (12) and the lower support tube (9) respectively and are tensioned.

3. The net-collision recovery device for small unmanned aerial vehicles according to claim 2, characterized in that: The upper horizontal strip (2-a), lower horizontal strip (2-c), and vertical strip (2-b) are all made of, for example, nylon.

4. The net-collision recovery device for a small unmanned aerial vehicle according to claim 2, characterized in that: The barrier netting consists of three sections that can be disassembled into segments (2-1, 2-2, 2-3).

5. The net-collision recovery device for a small unmanned aerial vehicle according to claim 1, characterized in that: The outer end of the base square tube (19) has an opening, which is fixed to the ground by inserting a ground nail.

6. The net-collision recovery device for a small unmanned aerial vehicle according to any one of claims 1-5, characterized in that: A net-trapping recovery device is vertically arranged on the ground along the landing path of the UAV (1). When the drone is recovered, the barrier net (2) is fully opened and perpendicular to the ground. Under the control of the flight control system, the UAV first impacts the middle of the barrier net (2) and continues to slide forward due to inertia, driving the upper transverse strip (2-a) and lower transverse strip (2-c) of the barrier net (2) to transmit the impact to the upper support tube (12) and lower support tube (9); the upper support tube (12) and lower support tube (9) pull the upper tube clamp (3) and lower tube clamp (8) to rotate inward, stretching the linear damper (7) to absorb energy. The upper pipe clamp (3) and the lower pipe clamp (8) simultaneously drive the upper connecting rod (4) and the lower connecting rod (6), causing the slider (5) to move from one end of the slide rail plug (14) along the slide rail (13) to the buffer block (15), completing the locking of the support buffer device. At this time, the blocking net (2) is pocket-shaped, completely covering the UAV (1) after the flight ends.

7. The net-collision recovery device for a small unmanned aerial vehicle according to claim 6, characterized in that: The damping parameters of the linear damper (7) are determined based on the pre-input weight of the UAV to be recovered and the set recovery speed.

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