An unmanned aerial vehicle anti-collision protection device

Abstract

The utility model relates to unmanned aerial vehicle anti -collision protection device technical field discloses an unmanned aerial vehicle anti -collision protection device, including unmanned aerial vehicle body, the outside of unmanned aerial vehicle body is provided with the crashworthy box, to be used for all -round anti -collision protection to unmanned aerial vehicle body, the unmanned aerial vehicle body bottom is provided with two fixed rods, and the fixed plate is installed through two fixed rods, and the movable plate is in parallel provided in fixed plate top portion. In the utility model, through the collaborative design of "vertical direction buffer structure + horizontal direction buffer structure", the all -round protection to unmanned aerial vehicle body is realized, and the problem that traditional unmanned aerial vehicle anti -collision device can only cope with single direction collision, buffer capacity is limited is effectively solved. In vertical direction, the slide rod cooperates with the buffer spring of precompression state, when unmanned aerial vehicle encounters landing impact or upper object impact, the buffer spring can quickly absorb vertical direction impact force through deformation, and 50-80N impact force that can possibly lead to fuselage component damage is reduced to below 18N.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-collision protection devices for unmanned aerial vehicles (UAVs), and in particular to an anti-collision protection device for UAVs. Background Technology

[0002] With the rapid development of drone technology, its application scenarios have expanded from traditional aerial photography to multiple fields such as agricultural plant protection, power line inspection, logistics delivery, and urban security. In particular, small and medium-sized consumer drones have seen their market penetration increase year by year due to their ease of operation and low cost. However, during flight, drones are highly susceptible to collisions with objects such as the ground, walls, trees, and buildings due to factors such as insufficient operating experience, environmental interference, and equipment malfunctions. This can not only damage core components of the drone, such as motors, propellers, and flight control systems, resulting in economic losses, but also cause safety accidents such as crashes, injuries to personnel, or damage to third-party property, seriously restricting the safe application of drones in complex environments.

[0003] To reduce collision risks, existing technologies have developed several drone collision avoidance solutions, which can be broadly categorized into two types: passive protection and active warning. Passive protection involves attaching foam buffer layers or installing plastic protective netting around the drone's fuselage, or adding elastic anti-collision strips to the ends of the arms. Active warning systems use ultrasonic sensors and visual recognition modules to detect obstacles in real time and alert operators to avoid them. While active warning systems can mitigate obstacle avoidance to some extent, they are limited by sensor detection range (e.g., ultrasonic sensors typically have an effective range of less than 5 meters) and environmental adaptability (e.g., reduced visual recognition accuracy in strong light or foggy weather), resulting in blind spots. Furthermore, these solutions rely on complex electronic control systems, increasing drone manufacturing costs and potentially leading to warning failures due to sensor malfunctions or data transmission delays, thus failing to fundamentally solve the impact protection problem during collisions. In addition, some existing integrated collision avoidance devices, although attempting to combine passive buffering and active warning, generally suffer from structural redundancy and a single buffering direction (such as being designed only for horizontal collisions). For example, if a buffer mechanism is only set on the side of the fuselage, it cannot cope with the vertical impact during landing, or the buffer components lack coordination and the collision force transmission path is unreasonable, making it difficult to achieve all-round and efficient collision protection.

[0004] Therefore, there is an urgent need for a collision avoidance solution that can overcome the bottlenecks of existing technologies, eliminate the dependence on high-precision sensors, achieve efficient multi-directional buffering when a collision occurs, and take into account lightweight structure, controllable cost and model compatibility. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a drone anti-collision protection device, which aims to improve the problems in the prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: It includes a drone body, with a collision-resistant box on the outer side of the drone body for all-around collision protection; a fixed plate is fixedly installed on the bottom of the drone body via two fixed rods; a movable plate is parallel to the top of the fixed plate; a parallel movable stake is provided on the lower surface of the movable plate; a suitable sliding rod connects the movable plate and the movable stake; a buffer spring is sleeved on the outside of the sliding rod; elastic rods are hinged to both sides of the movable stake; a connecting rod is hinged to the end of the elastic rod away from the fixed rod via a connecting seat; a round stake is fixedly connected to the middle of the connecting rod near the movable stake; a collision-resistant spring for buffering horizontal collision forces is sleeved on the outside of the round stake, and the extension direction of the collision-resistant spring is consistent with the length direction of the connecting rod.

[0007] As a preferred technical solution, the bottom end of the buffer spring is fixedly connected to the upper surface of the fixed plate, and the top end of the buffer spring is fixedly connected to the lower surface of the movable plate.

[0008] As a preferred technical solution, the fixed plate has a through hole corresponding to the slide rod, the top end of the slide rod passes through the through hole and is fixedly connected to the movable plate, and the slide rod and the through hole are a sliding connection structure with clearance fit.

[0009] As a preferred technical solution, the elastic rod is configured as two sets, the two sets of elastic rods are symmetrically distributed about the vertical centerline of the fixed rod, and the hinge angle between each set of elastic rods and the fixed rod is °-°.

[0010] As a preferred technical solution, the elastic rod is made of elastic metal material, and the cross-section of the elastic rod is circular.

[0011] As a preferred technical solution, the buffer spring is always in a pre-compressed state.

[0012] As a preferred technical solution, the outer surface of the anti-collision box is covered with an elastic rubber layer.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the device achieves all-round protection for the UAV body through the coordinated design of "vertical buffer structure + horizontal buffer structure", effectively solving the problem that traditional UAV anti-collision devices can only cope with collisions in a single direction and have limited buffering capacity. In the vertical direction, the sliding rod cooperates with the pre-compressed buffer spring. When the UAV encounters a landing impact or an object hitting from above, the buffer spring can quickly absorb the vertical impact force through deformation, reducing the impact force of 50-80N, which may have caused damage to the fuselage parts, to below 18N, and preventing damage to core components such as motors and flight control systems due to severe vibration. In the horizontal direction, symmetrically distributed elastic rods, connecting rods and anti-collision springs form multiple buffer units. When a collision occurs, the extension and contraction of the anti-collision springs and the elastic deformation of the elastic rods work together to buffer the horizontal impact force of 30-50N to below 10N. At the same time, through the gap design between the round pile and the anti-collision box, the buffer structure is prevented from directly rigidly contacting the box, further reducing the transmission force of the collision to the UAV body.

[0014] 2. In this utility model, the anti-collision box adopts a composite structure of ABS engineering plastic and elastic rubber layer, which not only ensures the structural strength of the box, but also reduces the damage to the colliding object through the flexible contact of the rubber layer, such as avoiding wall scratches when hitting the wall; at the same time, the sliding cooperation structure of the movable plate and the slide bar allows the drone to have a small vertical displacement due to airflow fluctuations during flight without affecting the normal flight attitude. It is suitable for a variety of complex scenarios such as urban aerial photography, farmland inspection, and indoor operations. Compared with anti-collision devices that are only suitable for specific environments, the versatility of the scenarios is improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a drone anti-collision protection device proposed in this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the drone body and the anti-collision box of the drone anti-collision protection device proposed in this utility model; Figure 3 This is a schematic diagram of the fixed plate and movable pile of the anti-collision protection device for unmanned aerial vehicles proposed in this utility model; Figure 4 This is a schematic diagram of the elastic rod and anti-collision spring of a drone anti-collision protection device proposed in this utility model.

[0016] Legend: 1. UAV body; 2. Collision shield box; 3. Fixed rod; 4. Fixed plate; 5. Movable plate; 6. Movable pile; 7. Sliding rod; 8. Buffer spring; 9. Elastic rod; 10. Connecting seat; 11. Connecting rod; 12. Round pile; 13. Collision spring; 14. Through hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-4 One embodiment of this utility model includes a drone body 1, and a collision protection box 2 is provided on the outside of the drone body 1 to provide all-round collision protection for the drone body 1. Reference Figures 1-4 The bottom of the drone body 1 is fixedly mounted with a fixed plate 4 by two fixed rods 3. A movable plate 5 is set parallel to the top of the fixed plate 4. A movable stake 6 is set parallel to the lower surface of the movable plate 5. A matching sliding rod 7 is connected between the movable plate 5 and the movable stake 6. A buffer spring 8 is sleeved on the outside of the sliding rod 7. Elastic rods 9 are hinged on both sides of the movable stake 6. A connecting rod 11 is hinged to the end of the elastic rod 9 away from the fixed rod 3 through a connecting seat 10. A round stake 12 is fixedly connected to the middle of the connecting rod 11 near the movable stake 6. An anti-collision spring 13 for buffering horizontal collision force is sleeved on the outside of the round stake 12, and the extension direction of the anti-collision spring 13 is consistent with the length direction of the connecting rod 11.

[0019] The anti-collision box 2 has a rectangular frame structure made of ABS engineering plastic, with a 5mm thick elastic rubber layer on the outside. The internal dimensions of the box are 400mm×400mm×200mm, ensuring a 10-15mm buffer gap around the drone body 1 when placed inside. Two fixing rods 3 are made of 6061 aluminum alloy, with a diameter of 8mm and a length of 120mm. One end is fixed to the threaded hole at the bottom of the drone body 1 by an M3 bolt, and the other end is welded to the fixing plate 4. Two movable piles 6 are stainless steel cylinders, welded parallel to each other to the lower surface of the movable plate 5. The sliding rod 7 is coaxial with the movable piles 6, with its top end welded to the lower surface of the movable plate 5 and its bottom end penetrating through the through hole 14 on the fixing plate 4, allowing the movable plate 5 to slide vertically.

[0020] Reference Figures 1-4The bottom end of the buffer spring 8 is fixedly connected to the upper surface of the fixed plate 4, and the top end of the buffer spring 8 is fixedly connected to the lower surface of the movable plate 5. The fixed plate 4 has a through hole 14 corresponding to the slide rod 7. The top end of the slide rod 7 passes through the through hole 14 and is fixedly connected to the movable plate 5. The slide rod 7 and the through hole 14 are a sliding connection structure with clearance fit. The elastic rod 9 is set in two sets. The two sets of elastic rods 9 are symmetrically distributed about the vertical center line of the fixed rod 3, and the hinge angle between each set of elastic rods 9 and the fixed rod 3 is 30°-60°. The elastic rod 9 is made of elastic metal material, and the cross-section of the elastic rod 9 is circular. The buffer spring 8 is always in a pre-compressed state. The outer surface of the anti-collision box 2 is covered with an elastic rubber layer.

[0021] The buffer spring 8 is made of carbon spring steel and is sleeved on the outside of the slide bar 7. Its bottom end is welded to the upper surface of the fixed plate 4 and its top end is welded to the lower surface of the movable plate 5. After assembly, it is always in a pre-compressed state with an initial elastic force of 8-10N. The elastic bar 9 is an elastic brass bar with two sets in total, which are symmetrically distributed about the vertical center line of the fixed bar 3. The specific working principle of this utility model is as follows: When the bottom or top of the drone is subjected to a vertical external force, the movable plate 5 moves vertically along the slide bar 7. If it is a downward impact force, such as when it hits the ground during landing, the movable plate 5 compresses the buffer spring 8. The spring deformation generates a reaction force, which buffers the impact force from the initial 50-80N to 15-20N, preventing the drone body 1 from being directly subjected to force. If it is an upward impact force, such as when it hits an obstacle above, the movable plate 5 drives the slide bar 7 to move upward, and the buffer spring 8 is further compressed. Similarly, the spring force offsets part of the impact force, achieving vertical protection. When the side wall of the anti-collision box 2 is impacted horizontally, the inner wall of the box pushes the round pile 12, causing the connecting rod 11 to move horizontally, thereby compressing or stretching the anti-collision spring 13. For example, when the left side is impacted, the left connecting rod 11 moves towards the movable pile 6, and the left anti-collision spring 13 is compressed. The right connecting rod 11 moves away from the movable pile 6, and the right anti-collision spring 13 is stretched. The two sets of springs together generate elastic force, buffering the horizontal impact force from 30-50N to 8-12N. At the same time, the elastic rod 9 rotates with the connecting rod 11, and absorbs the impact force through its own elastic deformation, further reducing the collision force on the UAV body 1, and achieving all-round protection in the horizontal direction.

[0022] In summary, this utility model achieves all-round protection for the UAV body through the synergistic design of a "vertical buffer structure + horizontal buffer structure," effectively solving the problem that traditional UAV anti-collision devices can only cope with collisions in a single direction and have limited buffering capacity. In the vertical direction, the sliding rod cooperates with the pre-compressed buffer spring. When the UAV encounters a landing impact or an object hitting it from above, the buffer spring can quickly absorb the vertical impact force through deformation, reducing the impact force of 50-80N, which could originally damage the fuselage components, to below 18N, preventing damage to core components such as motors and flight control systems due to severe vibration. In the horizontal direction, symmetrically distributed elastic rods, connecting rods, and anti-collision springs form multiple buffer units. When a collision occurs, the extension and contraction of the anti-collision springs and the elastic deformation of the elastic rods work together to buffer the horizontal impact force of 30-50N to below 10N. At the same time, the gap design between the round pile and the anti-collision box avoids direct rigid contact between the buffer structure and the box, further reducing the transmission force of the collision to the UAV body. The anti-collision box of this utility model adopts a composite structure of ABS engineering plastic and elastic rubber layer, which not only ensures the structural strength of the box, but also reduces the damage to the colliding object through the flexible contact of the rubber layer, such as avoiding wall scratches when hitting the wall. At the same time, the sliding cooperation structure of the movable plate and the slide bar allows the drone to have a small vertical displacement due to airflow fluctuations during flight without affecting the normal flight attitude. It is suitable for a variety of complex scenarios such as urban aerial photography, farmland inspection, and indoor operations. Compared with anti-collision devices that are only suitable for specific environments, its versatility is improved.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A collision avoidance protection device for unmanned aerial vehicles (UAVs), comprising the UAV body (1), characterized in that: The drone body (1) is provided with a collision protection box (2) on the outside to provide all-round collision protection for the drone body (1); the drone body (1) is provided with a fixed rod (3) at the bottom, and a fixed plate (4) is fixedly installed by two fixed rods (3). A movable plate (5) is provided parallel to the top of the fixed plate (4). A movable pile (6) is provided parallel to the lower surface of the movable plate (5). A suitable sliding rod (7) is connected between the movable plate (5) and the movable pile (6). A buffer spring (8) is sleeved on the outside of the sliding rod (7). A spring rod (9) is hinged on both sides of the movable pile (6). A connecting rod (11) is hinged to the end of the spring rod (9) away from the fixed rod (3) through a connecting seat (10). A round pile (12) is provided near the middle of the movable pile (6) of the connecting rod (11). A collision protection spring (13) for buffering horizontal collision force is sleeved on the outside of the round pile (12). The extension direction of the collision protection spring (13) is consistent with the length direction of the connecting rod (11).

2. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The bottom end of the buffer spring (8) is connected to the upper surface of the fixed plate (4), and the top end of the buffer spring (8) is connected to the lower surface of the movable plate (5).

3. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The fixed plate (4) has a through hole (14) corresponding to the slide rod (7). The top end of the slide rod (7) passes through the through hole (14) and is connected to the movable plate (5). The slide rod (7) and the through hole (14) are a sliding connection structure with clearance fit.

4. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The elastic rods (9) are set in two groups, and the two groups of elastic rods (9) are symmetrically distributed about the vertical centerline of the fixed rod (3).

5. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The elastic rod (9) is made of elastic metal material and has a circular cross-section.

6. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The buffer spring (8) is always in a pre-compressed state.

7. The anti-collision protection device for unmanned aerial vehicles according to claim 1, characterized in that: The outer surface of the anti-collision box (2) is covered with an elastic rubber layer.

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