Anti-collision device for surveying and mapping unmanned aerial vehicle
By employing a multi-stage buffer mechanism and linkage working in tandem, the problem of insufficient buffering capacity in UAV collision avoidance devices is solved, effectively decomposing and absorbing impact forces and improving the collision avoidance performance of UAVs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2026-03-31
AI Technical Summary
Existing drone collision avoidance devices have insufficient buffering capacity and poor structural coordination, failing to effectively decompose multi-directional impact forces, leading to partial damage or functional failure of the drone.
It adopts a multi-stage buffer mechanism, including a U-shaped bracket, a first buffer assembly, and a second buffer assembly. Through the coordinated work of connecting rods, it uses multiple sets of springs and zigzag rods to disperse the impact force, combined with a high-elasticity rubber anti-collision round frame for initial buffering.
It achieves multi-level buffer protection, effectively decomposes and absorbs impact force, protects the main body and propeller of the drone, and improves the overall protection capability of the anti-collision device.
Smart Images
Figure CN224061225U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of anti-collision technology for surveying drones, specifically referring to an anti-collision device for surveying drones. Background Technology
[0002] In fields such as geographic surveying and power line inspection, surveying drones are widely used due to their flexibility and efficiency. However, the complex operating environment (such as mountainous areas and urban buildings) and the requirement for low-altitude flight make them highly susceptible to risks such as being scratched by tree branches and colliding with obstacles during flight.
[0003] Existing drone collision avoidance devices mostly employ a single buffer structure, such as relying solely on elastic materials to wrap the wings or simple springs for shock absorption. When faced with large impacts, the buffering effect is limited, making it difficult to effectively protect the drone body and propellers. In addition, some collision avoidance devices lack coordination between components, failing to decompose and absorb impact forces from multiple directions. This results in the impact force being concentrated on a localized area of the drone during a collision, causing structural damage or functional failure. Utility Model Content
[0004] To address the aforementioned problems of insufficient buffering capacity and poor structural coordination in existing anti-collision devices, this utility model provides an anti-collision device for surveying drones.
[0005] To achieve the above functions, the technical solution adopted by this utility model is as follows: A collision avoidance device for a surveying UAV includes a UAV body, arms, and propellers. The arms are symmetrically distributed in a cross shape at the four corners of the UAV body and are on the same horizontal plane. The propellers are rotatably located at the ends of the arms. An L-shaped connecting block is connected to the bottom of the arms. A buffer mechanism is connected to the L-shaped connecting block. The buffer mechanism includes a U-shaped bracket, a first buffer component, a second buffer component, and a collision avoidance circular frame. The U-shaped bracket is fixedly installed at the end of the L-shaped connecting block. The first buffer component and the second buffer component are both located inside the U-shaped bracket and are connected by a connecting rod. The collision avoidance circular frame is connected to the first buffer component.
[0006] As a preferred technical solution of this utility model, the first buffer assembly includes a first round rod horizontally fixed to the inner side of the U-shaped bracket, two sets of folded rods symmetrically slidably disposed at both ends of the first round rod, and a first spring sleeved on the first round rod, wherein the two ends of the first spring are respectively fixedly connected to the inner side wall of the bracket and the outer side wall of the folded rod.
[0007] As a preferred embodiment of the present invention, the second buffer assembly includes a second round rod horizontally fixed to the inner side of the U-shaped bracket, two sets of sleeve blocks symmetrically slidably disposed at both ends of the second round rod, and a second spring sleeved on the second round rod. The two ends of the second spring are respectively fixedly connected to the inner sidewalls of the two sets of sleeve blocks opposite to each other. The second round rod and the first round rod are arranged parallel to each other.
[0008] As a preferred embodiment of this utility model, two sets of connecting rods are symmetrically arranged, and the two ends of the connecting rods are respectively hinged to the end of the sleeve block and the end of the broken line rod.
[0009] As a preferred embodiment of this utility model, the end of the folded rod is connected to a rectangular block, and the anti-collision round frame is made of highly elastic rubber and is installed on the rectangular block by bolts.
[0010] As a preferred embodiment of this utility model, the folding rod has a bending angle design of 120°.
[0011] As a preferred embodiment of this utility model, the opening of the U-shaped bracket is oriented towards the outside of the machine arm.
[0012] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:
[0013] Through the coordinated arrangement of the buffer mechanism, connecting rods, and rectangular blocks, a multi-level buffer protection mechanism is achieved. The anti-collision circular frame first achieves primary buffering, and then the impact force is transmitted to the broken bar. The first spring in the first buffer component converts kinetic energy into elastic potential energy through deformation, absorbing most of the impact energy. At the same time, with the help of the hinged transmission of the connecting rod, the second buffer component intervenes synchronously, and the second spring further buffers and offsets the remaining impact force. The two sets of buffer components work together to decompose and absorb the impact force from multiple directions. Attached Figure Description
[0014] Figure 1 This invention provides a schematic diagram of the overall structure of a collision avoidance device for surveying unmanned aerial vehicles (UAVs). Figure 1 ;
[0015] Figure 2 This invention provides a schematic diagram of the overall structure of a collision avoidance device for surveying unmanned aerial vehicles (UAVs). Figure 2 ;
[0016] Figure 3 This invention provides a schematic diagram of the overall structure of a collision avoidance device for surveying unmanned aerial vehicles (UAVs). Figure 3 ;
[0017] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.
[0018] The components include: 1. UAV body; 2. Arm; 3. Propeller; 4. L-shaped connecting block; 5. Buffer mechanism; 6. U-shaped bracket; 7. First buffer assembly; 8. Second buffer assembly; 9. Anti-collision round frame; 10. Connecting rod; 11. First round rod; 12. Folded rod; 13. First spring; 14. Second round rod; 15. Sleeve block; 16. Second spring; and 17. Rectangular block. Detailed Implementation
[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.
[0022] like Figure 1-4 As shown, the present invention provides a collision avoidance device for a surveying drone, comprising a drone body 1, arms 2, and propellers 3. The arms 2 are symmetrically distributed in a cross shape at the four corners of the drone body 1 and are on the same horizontal plane. The propellers 3 are rotatably mounted at the ends of the arms 2. An L-shaped connecting block 4 is connected to the bottom of the arms 2, and a buffer mechanism 5 is connected to the L-shaped connecting block 4 to absorb and buffer external impact loads, protecting the drone body 1 and propellers 3 from collision damage. The buffer mechanism 5 includes a U-shaped bracket 6, a first buffer component 7, a second buffer component 8, and a collision avoidance circular frame 9. The U-shaped bracket 6 is fixedly installed at the end of the L-shaped connecting block 4. The first buffer component 7 and the second buffer component 8 are both located on the inner side of the U-shaped bracket 6, and a connecting rod 10 is provided between them. The opening of the U-shaped bracket 6 faces the outer side of the arms 2, providing sufficient sliding and deformation space for the first buffer component 7 and the second buffer component 8. At the same time, the U-shaped structure provides stable support for the first buffer component 7 and the second buffer component 8. The collision avoidance circular frame 9 is connected to the first buffer component 7.
[0023] like Figure 1-4 As shown, the first buffer assembly 7 includes a first round rod 11 horizontally fixed to the inner side of the U-shaped bracket 6, two sets of zigzag rods 12 symmetrically slidably disposed at both ends of the first round rod 11, and a first spring 13 sleeved on the first round rod 11. The two ends of the first spring 13 are respectively fixedly connected to the inner side wall of the bracket and the outer side wall of the zigzag rod 12. The zigzag rod 12 has a 120° bending angle design to effectively disperse and buffer impact forces from different directions. When the anti-collision round frame 9 is impacted by an external force, the zigzag rod 12 slides along the first round rod 11 and changes the compression or tension state of the first spring 13. The spring converts the kinetic energy generated by the collision into elastic potential energy, thereby absorbing the impact energy and reducing the impact force on the UAV.
[0024] like Figure 1-4 As shown, the second buffer assembly 8 includes a second round rod 14 horizontally fixed to the inner side of the U-shaped bracket 6, two sets of sleeve blocks 15 symmetrically slidably disposed at both ends of the second round rod 14, and a second spring 16 sleeved on the second round rod 14. The two ends of the second spring 16 are respectively fixedly connected to the inner sidewalls of the two sets of sleeve blocks 15. The second round rod 14 and the first round rod 11 are arranged parallel to each other. When subjected to an impact force, the sleeve blocks 15 slide on the second round rod 14 to compress or stretch the second spring 16, and the elastic deformation of the spring absorbs energy. The second buffer assembly 8 cooperates with the first buffer assembly 7 to buffer the impact force from different directions, thereby enhancing the overall buffering effect.
[0025] like Figure 2-4 As shown, two sets of connecting rods 10 are symmetrically arranged. The two ends of the connecting rods 10 are hinged to the ends of the sleeve block 15 and the broken rod 12, respectively. Based on the lever principle and the principle of force transmission, the connecting rods 10 connect the first buffer component 7 and the second buffer component 8 into a working whole. When the first buffer component 7 is subjected to force, the force is transmitted to the second buffer component 8 through the connecting rods 10, so that both participate in buffering at the same time and the impact force is more evenly distributed.
[0026] like Figure 1-4 As shown, a rectangular block 17 is connected to the end of the folding rod 12. The anti-collision round frame 9 is made of high elastic rubber material, which is used to initially buffer the collision force. It is installed on the rectangular block 17 by bolts, so that different specifications of anti-collision rings can be replaced according to the size of the propeller 3.
[0027] In practical use, before the surveying drone takes off, the appropriate size anti-collision circular frame 9 is installed on the rectangular block 17 according to the size of the propeller 3; then, the buffer mechanism 5 is connected to the bottom of the arm 2 through the L-shaped connecting block 4; during the flight of the drone, once the anti-collision circular frame 9 accidentally collides with an obstacle, the collision force will be immediately transmitted to the broken rod 12; at this time, the broken rod 12 will slide along the first circular rod 11, causing the first spring 13 to undergo compression or tension deformation, converting most of the impact kinetic energy into the elastic potential energy of the spring, and through the transmission action of the connecting rod 10, driving the sleeve block 15 to slide on the second circular rod 14, causing the second spring 16 to also deform to absorb the remaining energy; after the collision, the first spring 13 and the second spring 16 will return to their original state, and the device will then reset, and can continue to provide protection for the next possible collision.
[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A collision avoidance device for a mapping unmanned aerial vehicle (UAV), comprising a UAV body (1), arms (2), and propellers (3), wherein the arms (2) are symmetrically distributed in a cross shape at the four corners of the UAV body (1) and are on the same horizontal plane, and the propellers (3) are rotatably mounted at the ends of the arms (2), characterized in that: The bottom end of the machine arm (2) is connected with an L-shaped connecting block (4), the L-shaped connecting block (4) is connected with a buffer mechanism (5), the buffer mechanism (5) comprises a U-shaped support (6), a first buffer assembly (7), a second buffer assembly (8) and a collision-proof round frame (9), the U-shaped support (6) is fixedly installed at the end of the L-shaped connecting block (4), the first buffer assembly (7) and the second buffer assembly (8) are both arranged on the inner side of the U-shaped support (6) and a connecting rod (10) is arranged between the first buffer assembly (7) and the second buffer assembly (8), and the collision-proof round frame (9) is connected to the first buffer assembly (7).
2. The anti-collision device for surveying unmanned aerial vehicle according to claim 1, characterized in that: The first buffer assembly (7) comprises a first round rod (11) fixed horizontally on the inner side of the U-shaped support (6), two groups of fold line rods (12) symmetrically and slidingly arranged at the two ends of the first round rod (11), and a first spring (13) sleeved on the first round rod (11), and the two ends of the first spring (13) are fixedly connected to the inner side wall of the support and the outer side wall of the fold line rod (12) respectively.
3. The anti-collision device for surveying unmanned aerial vehicle according to claim 2, characterized in that: The second buffer assembly (8) comprises a second round rod (14) fixed horizontally on the inner side of the U-shaped support (6), two groups of sleeve blocks (15) symmetrically and slidingly arranged at the two ends of the second round rod (14), and a second spring (16) sleeved on the second round rod (14), and the two ends of the second spring (16) are fixedly connected to the opposite inner side walls of the two groups of sleeve blocks (15) respectively; the second round rod (14) and the first round rod (11) are arranged in parallel with each other.
4. The anti-collision device for surveying unmanned aerial vehicle according to claim 3, characterized in that: The connecting rod (10) is symmetrically arranged in two groups, and the two ends of the connecting rod (10) are hingedly connected with the end portions of the sleeve blocks (15) and the end portions of the fold line rods (12) respectively.
5. The collision avoidance device for surveying drones according to claim 4, wherein: The end portion of the fold line rod (12) is connected with a rectangular block (17), the collision-proof round frame (9) is made of high-elasticity rubber material and is installed on the rectangular block (17) through bolts.
6. The collision avoidance device for surveying drones according to claim 5, wherein: The fold line rod (12) has a bending angle design of 120°.
7. The anti-collision device for surveying unmanned aerial vehicle according to claim 3, characterized in that: The opening of the U-shaped support (6) is arranged towards the outer side of the machine arm (2).