Propeller protection device of unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle propeller protection device which comprises a propeller support, a square rod is fixedly installed at the bottom of the end, provided with a propeller, of the propeller support, an I-shaped wheel is connected to the outer side of the square rod in a clamped and sleeved mode, and a fixed supporting rod is fixed to the outer wall of the top of the I-shaped wheel. A protection assembly is arranged at the end, away from the spool, of the fixed supporting rod, the outer side of the middle of the spool is rotationally sleeved with a plurality of movable rings in the vertical direction, movable supporting rods are fixed to the outer walls of the movable rings, and the movable supporting rods are spirally distributed in the vertical direction. A second supporting column is fixed to the end, away from the movable ring, of the bottommost movable supporting rod, and first supporting columns are fixed to the ends, away from the movable ring, of the remaining movable supporting rods. After the unmanned aerial vehicle completes operation, the unmanned aerial vehicle can be independently detached and can rotate and contract, the size is greatly reduced, and the effects of being easy to store and convenient to carry are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, and in particular relates to a UAV propeller protection device. Background Technology

[0002] A drone, short for unmanned aerial vehicle, is an unmanned aircraft controlled by radio remote control equipment and its own program control device. It can perform tasks that are impossible or dangerous for humans. The propeller is a crucial component of a drone, facilitating takeoff and flight control. In actual drone operations, protective devices are installed on the propeller to prevent interference from birds and other insects.

[0003] Chinese utility model patent with announcement number CN221757762U provides a drone propeller protection device. Through the cooperation of the clamping part, the fastening part and the locking part, the protection device is applicable to different models of drones. At the same time, the protective barrier formed by the protection mechanism covers the propeller, which can better protect the propeller from damage.

[0004] Research indicates that currently, after use, some detachable components of drones are removed to reduce their size, and these components are placed together with the drone body in a dedicated protective case. However, the propeller protection devices proposed in the aforementioned technical solutions are bulky, lack folding functionality, and are not conducive to reducing size, affecting portability and storage, and thus failing to meet practical needs. Therefore, there is an urgent need to improve existing drone propeller protection devices and provide a new type of drone propeller protection device. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a drone propeller protection device that is reasonably designed, simple in structure, has a folding function, and is easy to store, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drone propeller protection device includes a propeller bracket. A square rod is fixedly installed at the bottom of one end of the propeller bracket. An I-shaped wheel is engaged with the outer side of the square rod. A fixed support rod is fixed to the top outer wall of the I-shaped wheel. A protective component is provided at the end of the fixed support rod away from the I-shaped wheel. Multiple movable rings are rotatably mounted on the outer side of the middle of the I-shaped wheel in a vertical direction. Movable support rods are fixed on the outer walls of the multiple movable rings. The multiple movable support rods are spirally distributed in a vertical direction. A second pillar is fixed to the bottom movable support rod away from the movable ring. A first pillar is fixed to the remaining movable support rods at the ends away from the movable rings. A connecting rod assembly is hinged between two adjacent movable support rods and between the movable support rods and the fixed support rods.

[0008] In a preferred embodiment, the upper center of the I-beam wheel is provided with a square groove that matches the square rod, the bottom outer wall of the I-beam wheel is threaded with a first bolt, and the inside of the square rod is provided with a threaded hole that matches the first bolt.

[0009] In a preferred embodiment, the protective assembly includes a vertical tube, a coil spring, a winding rod, and a net. The vertical tube is fixedly installed on the end of the fixed support rod away from the I-beam wheel. The winding rod is installed inside the vertical tube via the coil spring. One end of the net is fixedly connected to the outer wall of the winding rod. The net is made of nylon.

[0010] In a preferred embodiment, the other end of the interception net passes through multiple first pillars in sequence and is fixedly connected to the outer wall of the second pillar.

[0011] In a preferred embodiment, the linkage assembly includes a first link and a second link that are hinged together, with the ends of the first link and the second link being of equal length and far apart from each other, respectively hinged to two adjacent movable support rods.

[0012] In a preferred embodiment, the bottom end face of the bottom movable support rod is provided with a vertically downward extension, and a second bolt is threaded onto the extension. The bottom outer wall of the I-beam wheel is provided with two hole structures that are adapted to the second bolt. The two hole structures correspond to the unfolded and retracted states of the movable support rod, respectively.

[0013] In a preferred embodiment, each of the first pillars has a through-slot structure inside.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the solution of this utility model:

[0016] The I-beam wheel and the square rod are fixedly connected by the first bolt. Then, by using multiple movable rings and connecting rod assemblies that are rotated and sleeved on the outside of the I-beam wheel, it is easy to control the rotation and unfolding of multiple movable support rods. This allows the vertical tube, multiple first support rods and second support rods to be distributed at equal angles around the drone propeller. During the unfolding process, the interception net can be pulled out from inside the vertical tube. The multiple first support rods can support the interception net and prevent the interception net from contacting the propeller. The unfolded interception net can protect the propeller and prevent birds from hitting it and affecting the stable flight of the drone.

[0017] This protective device can be disassembled separately after the drone operation is completed, and it can be rotated and retracted to achieve a significant reduction in size, making it easy to store and carry. In addition, there are two holes inside the bottom of the I-beam wheel. When controlling the multiple movable support rods to unfold or retract, the second bolt can be tightened to insert them into the corresponding hole structure, thereby achieving the positioning of multiple movable support rods and ensuring the stability of the protective device in the unfolded or folded state. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings are described as follows:

[0019] Figure 1 This is a three-dimensional top view of the structure of this utility model;

[0020] Figure 2 This is a frontal cross-sectional view of the present invention.

[0021] Figure 3 This is a bottom view of the propeller support and square rod structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the overall front cross-sectional structure of the protective component of this utility model;

[0023] Figure 5 This is a bottom view of the movable ring and movable support rod of this utility model.

[0024] Figure 6 This is a schematic diagram of the folded storage structure of this utility model;

[0025] Figure 7 This is a top view of the structure of this utility model in its installed state.

[0026] In the picture:

[0027] 1. Propeller bracket; 2. Square rod; 3. I-beam wheel; 4. First bolt; 5. Fixed support rod; 6. Protective assembly; 61. Vertical tube; 62. Coil spring; 63. Retracting rod; 64. Interception net; 7. Movable ring; 8. Movable support rod; 9. Linkage assembly; 91. First link; 92. Second link; 10. First support column; 11. Second support column; 12. Second bolt. Detailed Implementation

[0028] The embodiments described below are merely some embodiments of the present invention and do not represent all embodiments consistent with the present invention. Exemplary embodiments will now be described with reference to the accompanying drawings:

[0029] like Figure 1-7 As shown, the present invention relates to a drone propeller protection device, which includes a propeller bracket 1. A square rod 2 is fixedly installed at the bottom of one end of the propeller bracket 1. An I-beam wheel 3 is sleeved on the outer side of the square rod 2. A fixed support rod 5 is fixed on the top outer wall of the I-beam wheel 3. A protective component 6 is provided at the end of the fixed support rod 5 away from the I-beam wheel 3. Multiple movable rings 7 are rotatably sleeved on the outer side of the middle part of the I-beam wheel 3 in the vertical direction. Movable support rods 8 are fixed on the outer walls of the multiple movable rings 7. The multiple movable support rods 8 are spirally distributed in the vertical direction. A second pillar 11 is fixed at the end of the bottom movable support rod 8 away from the movable ring 7. A first pillar 10 is fixed at the end of the remaining movable support rods 8 away from the movable ring 7. A connecting rod assembly 9 is hinged between two adjacent movable support rods 8 and between the movable support rod 8 and the fixed support rod 5.

[0030] Based on the above structure, a square groove adapted to the square rod 2 is provided at the center of the upper end of the I-beam wheel 3, and a first bolt 4 is threadedly connected at the center of the outer wall of the bottom end of the I-beam wheel 3. A threaded hole adapted to the first bolt 4 is provided inside the square rod 2.

[0031] In this embodiment, the first bolt 4 facilitates a stable connection between the square rod 2 and the I-beam wheel 3. Similarly, it also facilitates the easy disassembly of this protective device after the drone operation is completed.

[0032] Based on the above structure, the protective component 6 includes a vertical tube 61, a coil spring 62, a winding rod 63, and an intercepting net 64. The vertical tube 61 is fixedly installed on the end of the fixed support rod 5 away from the I-beam wheel 3. The winding rod 63 is installed inside the vertical tube 61 through the coil spring 62. One end of the intercepting net 64 is fixedly connected to the outer wall of the winding rod 63. The intercepting net 64 is made of nylon.

[0033] In this embodiment, by utilizing the coil spring 62 and the winding rod 63, when the protective device is unfolded, the winding rod 63 can rotate to release the outer edge of the intercepting net 64. At the same time, the coil spring 62 stores energy. When the protective device is folded, the coil spring 62 can control the winding rod 63 to automatically rotate, facilitating the retrieval of the intercepting net 64.

[0034] Based on the above structure, the other end of the interception net 64 passes through multiple first pillars 10 in sequence and is fixedly connected to the outer wall of the second pillar 11.

[0035] In this embodiment, the arrangement of multiple first pillars 10 facilitates the support of the interception net 64 and prevents the interception net 64 from contacting the propeller.

[0036] Based on the above structure, the linkage assembly 9 includes a first link 91 and a second link 92 that are hinged together. The ends of the first link 91 and the second link 92 that are of equal length and far apart from each other are respectively hinged to two adjacent movable support rods 8.

[0037] In this embodiment, the linkage assembly 9 facilitates the control of the rotation, expansion, or retraction of multiple movable support rods 8.

[0038] Based on the above structure, the bottom end face of the bottom movable support rod 8 is provided with a vertically downward extension, and a second bolt 12 is threaded on the extension. Two holes are provided on the bottom outer wall of the I-beam wheel 3 to match the second bolt 12. The two holes correspond to the unfolded and retracted states of the movable support rod 8, respectively.

[0039] In this embodiment, the two holes on the bottom outer wall of the second bolt 12 and the I-beam wheel 3 facilitate the positioning of the multiple movable support rods 8, ensuring the stability of the protective device in its unfolded or folded state.

[0040] Based on the above structure, each of the first support columns 10 has a through groove structure inside.

[0041] In this embodiment, the through-slot structure inside the first pillar 10 facilitates the passage of the intercepting net 64 through the first pillar 10, thereby making it easier for the first pillar 10 to support the intercepting net 64.

[0042] The working principle of this utility model is as follows:

[0043] In use, firstly, engage the I-beam wheel 3 with the square rod 2 and tighten the first bolt 4 to ensure a stable connection between the I-beam wheel 3 and the square rod 2. Then, tighten the second bolt 12 to pull its end out of the hole structure on the bottom outer wall of the I-beam wheel 3. Next, manually push the second support column 11 to rotate away from the vertical tube 61. At this time, the multiple movable rings 7 and the connecting rod assembly 9, which are mounted on the outside of the I-beam wheel 3, can be used to control the rotation and unfolding of multiple movable support columns 8. This allows the vertical tube 61, multiple first support columns 10 and second support columns 11 to be distributed at equal angles around the UAV propeller. Figure 1 As shown in the diagram, during deployment, the interceptor net 64 can be pulled out from inside the vertical tube 61. Multiple first support pillars 10 can support the interceptor net 64, preventing it from contacting the propeller. The deployed interceptor net 64 provides a protective function for the propeller. Figure 7 As shown, this design can prevent bird strikes from affecting the stable flight of the drone;

[0044] Once the drone operation is complete, the first bolt 4 can be unscrewed to detach the protective device from the square rod 2 and the propeller bracket 1. Simultaneously, the protective device can be rotated and retracted to its original position. Figure 6 As shown in the diagram, the size is significantly reduced, making it easy to store and carry. Moreover, the bottom of the I-beam wheel 3 has two holes. When the multiple movable support rods 8 are extended or retracted, the second bolt 12 on the extension of the bottommost movable support rod 8 can be tightened to insert it into the corresponding hole, thus positioning the multiple movable support rods 8 and ensuring the stability of the protective device in its extended or folded state. Furthermore, when the protective device is retracted, the coil spring 62 can be used to control the rewinding rod 63 to automatically rotate, facilitating the winding and recovery of the interception net 64.

[0045] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any equivalent changes, modifications, substitutions, and variations made by those skilled in the art based on the concept of this utility model and on the basis of existing technology through logical analysis, reasoning, or limited experiments shall be within the scope of protection defined by the claims.

Claims

1. A drone propeller protection device, comprising a propeller bracket (1), characterized in that: The propeller bracket (1) has a square rod (2) fixedly installed at the bottom of one end of the propeller. The outer side of the square rod (2) is fitted with an I-beam wheel (3). The top outer wall of the I-beam wheel (3) is fixed with a fixed support rod (5). The end of the fixed support rod (5) away from the I-beam wheel (3) is provided with a protective component (6). The middle outer side of the I-beam wheel (3) is fitted with multiple movable rings (7) in the vertical direction. Movable support rods (8) are fixed on the outer wall of each of the multiple movable rings (7). The multiple movable support rods (8) are spirally distributed in the vertical direction. The bottommost movable support rod (8) is fixed with a second pillar (11) at the end away from the movable ring (7). The remaining movable support rods (8) are all fixed with a first pillar (10) at the end away from the movable ring (7). A connecting rod assembly (9) is hinged between two adjacent movable support rods (8) and between the movable support rod (8) and the fixed support rod (5).

2. The UAV propeller protection device according to claim 1, characterized in that: The upper center of the I-beam wheel (3) is provided with a square groove that matches the square rod (2), and the center of the bottom outer wall of the I-beam wheel (3) is threaded with a first bolt (4), and the inside of the square rod (2) is provided with a threaded hole that matches the first bolt (4).

3. The UAV propeller protection device according to claim 1, characterized in that: The protective component (6) includes a vertical tube (61), a coil spring (62), a winding rod (63), and a net (64). The vertical tube (61) is fixedly installed on the end of the fixed support rod (5) away from the I-beam wheel (3). The winding rod (63) is installed inside the vertical tube (61) through the coil spring (62). One end of the net (64) is fixedly connected to the outer wall of the winding rod (63). The net (64) is made of nylon.

4. The UAV propeller protection device according to claim 3, characterized in that: The other end of the interception net (64) passes through multiple first pillars (10) in sequence and is fixedly connected to the outer wall of the second pillar (11).

5. The UAV propeller protection device according to claim 1, characterized in that: The linkage assembly (9) includes a first link (91) and a second link (92) that are hinged together. The first link (91) and the second link (92) have the same length and are far apart from each other. Their ends are respectively hinged to two adjacent movable support rods (8).

6. The UAV propeller protection device according to claim 5, characterized in that: The bottom end face of the bottom movable support rod (8) is provided with a vertically downward extension, and a second bolt (12) is threaded on the extension. The bottom outer wall of the I-beam wheel (3) is provided with two hole structures that are compatible with the second bolt (12). The two hole structures correspond to the unfolded and retracted states of the movable support rod (8), respectively.

7. The UAV propeller protection device according to claim 1, characterized in that: Each of the first support pillars (10) has a through-slot structure inside.

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