An unmanned aerial vehicle with propeller protection

Abstract

The utility model relates to unmanned aerial vehicle propeller protection technical field, proposes a kind of unmanned aerial vehicle with propeller protection device, including unmanned aerial vehicle support and with connecting arm connection propeller protection device, the four corners of unmanned aerial vehicle support are provided with the connecting arm for wing body installation, the end away from unmanned aerial vehicle support of connecting arm is equipped with wing motor, the output end of wing motor is equipped with wing body, the bottom of connecting arm is located wing motor and is equipped with the connecting screw hole coaxial with the axial position of wing motor axis, through the setting of first open-close cover, second open-close cover etc. structure, first open-close cover and second open-close cover slide in the arc-shaped guide slot of outer ring guide rail by the rotating block of its bottom, can make protective cover open to 270 degrees limit angle, without disassembly can completely expose wing body to overhaul or replace, significantly improve maintenance efficiency, solve the maintenance cumbersome and unstable problem in prior art.

Description

Technical Field

[0001] This utility model relates to the field of drone propeller protection technology, specifically to a drone with a propeller protection device. Background Technology

[0002] The widespread application of drone technology in both civilian and military fields has become an important symbol of modern technological development, playing an indispensable role in aerial photography, agricultural plant protection, power line inspection, logistics transportation, and many other areas. As a key component of drones, the performance and safety of the propeller directly affect the stability and reliability of the entire flight system.

[0003] Currently, drone propeller protection devices on the market are mainly divided into two categories: fixed protective covers and removable protective devices. Fixed protective covers are usually permanently connected to the drone's arms via bolts or clips, forming a protective ring around the propeller. While this design provides basic protection, replacing or repairing the propeller requires disassembling the entire protective cover with tools, which is cumbersome and time-consuming. More importantly, this type of protective cover often adversely affects the propeller's aerodynamic efficiency, especially types with large-area skeleton structures on the upper and lower surfaces, which significantly reduce the propeller's lift efficiency. Removable protective devices, on the other hand, solve the maintenance convenience problem to some extent, but their connection structure often suffers from insufficient reliability. When the drone experiences severe vibration or accidental collisions, it is prone to loosening or even detaching, losing its protective function. Utility Model Content

[0004] This invention proposes a drone with a propeller protection device, which solves the problems of cumbersome maintenance and instability in related technologies.

[0005] The technical solution of this utility model is as follows: A drone with a propeller protection device includes a drone support frame, and connecting arms for mounting the wing body are provided at the four corners of the drone support frame. A wing motor is mounted at the end of the connecting arm away from the drone support frame, and the wing body is mounted at the output end of the wing motor. The connecting arm is located at the bottom of the wing motor and has a connecting screw hole that is coaxial with the wing motor axis. The outer circumferential surface of the connecting screw hole has an arc-shaped snap-fit ​​groove of less than 360 degrees.

[0006] As a preferred embodiment of this utility model, a control power supply unit for control is installed at the bottom of the drone bracket, the control power supply unit is electrically connected to a vision module, and a support bracket for supporting the drone is fixedly connected to the bottom of the drone bracket.

[0007] The UAV also includes a propeller protection device, which includes a connecting component for mounting the protective cover body and a wing protective cover body for protecting the wing body. The wing protective cover body consists of a fixed protective cover, a first opening and closing cover, and a second opening and closing cover. The fixed protective cover is fixedly connected to the outer peripheral surface of the connecting component, and the first opening and closing cover and the second opening and closing cover are slidably assembled inside the connecting component.

[0008] The connecting assembly consists of a connecting body and a connecting cover. The connecting body is located at the bottom of the connecting screw hole, and the connecting cover is located at the bottom of the connecting body. The connecting cover and the connecting body are connected to the connecting screw hole by connecting bolts passing through them, thereby connecting to the drone bracket. A snap-fit ​​block is fixedly connected to the top of the connecting body, and the snap-fit ​​block snaps into the inside of the snap-fit ​​groove.

[0009] As a preferred embodiment of this utility model, an outer ring guide rail is fixedly connected to the outer circumferential surface of the connecting body, and at least two circumferentially distributed connecting blocks are provided on the outer circumferential surface of the connecting body. The connecting blocks are provided with threaded grooves, and the connecting cover is provided with through grooves in a number equivalent to the number of connecting blocks. The connecting blocks and the connecting cover are fixed by bolts that penetrate the through grooves and are threadedly connected to the threaded grooves.

[0010] As a preferred embodiment of this utility model, the bottom of the fixed protective cover is fixedly connected to a bottom connecting block, the bottom connecting block is fixedly connected to the outer circumferential surface of the outer ring guide rail, the bottom of the first opening and closing cover is fixedly connected to a first rotating block, the bottom of the second opening and closing cover is fixedly connected to a second rotating block, and the inner side of the outer ring guide rail is provided with two symmetrically arranged arc-shaped guide grooves, the first rotating block and the second rotating block are respectively slidably assembled inside the two arc-shaped guide grooves.

[0011] As a preferred embodiment of this utility model, the top of the fixed protective cover is fixedly connected to a top plate, and the top plate is provided with a plurality of circumferentially distributed through grooves. The top of the first opening cover is fixedly connected to a lower plate, and the bottom of the lower plate is provided with a number of lower studs equal to the number of through slots; The top of the second opening cover is fixedly connected to an upper connecting plate, and the top of the upper connecting plate is provided with an upper stud that is equal in number to the number of through slots; The upper plate and the lower plate are fixedly connected by bolts that are threaded through the through slots and the upper and lower studs.

[0012] As a preferred embodiment of this utility model, guide rings are provided on both the upper and lower sides of the top plate, and guide grooves are provided on the top of the first opening cover and the bottom of the second opening cover, with the guide rings and guide grooves fitting together.

[0013] The working principle and beneficial effects of this utility model are as follows: 1. This utility model, through the setting of a first opening cover, a second opening cover, etc., allows the protective cover to be opened to the limit angle of 270 degrees by means of the rotating block at the bottom of the first opening cover and the second opening cover sliding in the arc-shaped guide groove of the outer ring guide rail. This allows the wing body to be fully exposed for inspection or replacement without disassembly, which significantly improves maintenance efficiency.

[0014] 2. This utility model, through the setting of the connecting body, snap-fit ​​block and other structures, forms a radial lock between the snap-fit ​​block at the top of the connecting body and the snap-fit ​​groove of the connecting arm. Combined with the axial fastening formed by the connecting bolt and the connecting block, and the precise fit between the top guide ring and the guide groove, it forms multiple protections and effectively resists flight vibration and accidental impact. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This is a bottom view of the overall structure of the UAV of this utility model; Figure 4 This is a schematic diagram of the overall structure of the UAV propeller protection device of this utility model; Figure 5 This utility model Figure 4 Enlarged view of section A in the image; Figure 6 This is an exploded view of the connecting component of this utility model; Figure 7 This is a schematic diagram of the overall structure of the protective cover body of this utility model; Figure 8 This is an exploded view of the protective cover body of this utility model; Figure 9 This utility model Figure 8 Enlarged view of section B in the image; Figure 10 This utility model Figure 8 Enlarged view of section C in the image.

[0017] In the diagram: 1. Drone support frame; 2. Control and power supply unit; 3. Vision module; 4. Support bracket; 5. Connecting arm; 6. Wing motor; 7. Wing body; 8. Connecting screw hole; 9. Snap-fit ​​slot; 100. Connecting component; 101. Connecting body; 102. Snap-fit ​​block; 103. Outer ring guide rail; 104. Connecting block; 105. Connecting cover; 106. Connecting bolt; 200. Protective cover body; 201. Fixed protective cover; 202. Top plate; 203. Guide ring; 204. Through groove; 205. Bottom block; 206. First opening and closing cover; 207. Lower plate; 208. Lower stud; 209. Guide groove; 210. First rotating block; 211. Second opening and closing cover; 212. Upper plate; 213. Upper stud; 214. Second rotating block. Detailed Implementation

[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0019] Example like Figures 1-10 As shown, a drone with a propeller protection device includes a drone support 1. Connecting arms 5 for mounting wing bodies 7 are provided at the four corners of the drone support 1. A wing motor 6 is mounted at the end of the connecting arm 5 away from the drone support 1. The wing body 7 is mounted at the output end of the wing motor 6. The connecting arm 5 is located at the bottom of the wing motor 6 and has a connecting screw hole 8 that is coaxial with the axis of the wing motor 6. The outer circumferential surface of the connecting screw hole 8 has an arc-shaped snap-fit ​​groove 9 with a radius of less than 360 degrees.

[0020] The drone includes a drone support 1. At each of the four corners of the drone support 1, there is a connecting arm 5. The connecting arm 5 is fixed to the support by welding and extends outward for mounting the wing body 7. A wing motor 6 is installed at the end of the connecting arm 5 away from the drone support 1. The wing motor 6 is a brushless motor. Its output end directly drives the wing body 7 to rotate through a shaft connection, thereby generating lift to propel the drone into flight. At the bottom of the connecting arm 5, where the wing motor 6 is located, there is a connecting screw hole 8. The axis of the connecting screw hole 8 is coaxial with the axis of the wing motor 6. An arc-shaped locking groove 9 with a radius of less than 360 degrees is machined on the outer circumference of the connecting screw hole 8. The locking groove 9 is used to cooperate with the locking block 102. The cooperation between the connecting screw hole 8 and the locking groove 9 allows for quick installation and disassembly, improving the convenience of maintenance.

[0021] The bottom of the drone bracket 1 is equipped with a control power supply unit 2 for control, and the control power supply unit 2 is electrically connected to a vision module 3. The bottom of the drone bracket 1 is fixedly connected to a support bracket 4 for supporting the drone.

[0022] A control and power supply unit 2 is installed at the bottom of the drone support 1. The control and power supply unit 2 integrates a flight controller, a battery management system, and a power module. It is responsible for processing sensor data, executing flight algorithms, and providing stable power. The control and power supply unit 2 is electrically connected to the vision module 3 via a cable. The vision module 3 includes a high-definition camera, an infrared sensor, or a lidar for real-time environmental perception, obstacle avoidance, or target tracking. A support bracket 4 is also fixedly connected to the bottom of the drone support 1. The support bracket 4 provides support when the drone lands to prevent the fuselage from tipping over or being damaged. The working principle of the control and power supply unit 2 is to receive data from the vision module 3 and GPS through a built-in microprocessor, calculate flight parameters, and output PWM signals to control the rotation speed of the wing motor 6 to achieve autonomous flight or manual control. The vision module 3 uses image processing algorithms to identify terrain or objects, enhancing the navigation accuracy of the drone.

[0023] The propeller protection device of the UAV includes a connecting assembly 100 for mounting the protective cover body 200 and a wing protective cover body 200 for protecting the wing body 7. The wing protective cover body 200 is composed of a fixed protective cover 201, a first opening and closing cover 206 and a second opening and closing cover 211. The fixed protective cover 201 is fixedly connected to the outer peripheral surface of the connecting assembly 100, and the first opening and closing cover 206 and the second opening and closing cover 211 are slidably assembled inside the connecting assembly 100.

[0024] The protective device includes a connecting assembly 100 and a wing protective cover body 200. The connecting assembly 100 is used to fix the protective device to the connecting arm 5 of the UAV. The wing protective cover body 200 consists of a fixed protective cover 201, a first opening and closing cover 206, and a second opening and closing cover 211. The fixed protective cover 201 is fixedly connected to the outer peripheral surface of the connecting assembly 100 by welding to form the static part of the protective cover. The first opening and closing cover 206 and the second opening and closing cover 211 are slidably assembled inside the connecting assembly 100 and move along the guide rail to achieve opening and closing. The limit opening and closing angle of the first opening and closing cover 206 and the second opening and closing cover 211 is 270 degrees. The first opening and closing cover 206 and the second opening and closing cover 211 can be manually driven to slide on the guide rail of the connecting assembly 100.

[0025] The connecting assembly 100 consists of a connecting body 101 and a connecting cover 105. The connecting body 101 is located at the bottom of the connecting screw hole 8, and the connecting cover 105 is located at the bottom of the connecting body 101. The connecting cover 105 and the connecting body 101 are connected to the connecting screw hole 8 by a connecting bolt 106 passing through them, thereby connecting to the drone bracket 1. A snap-fit ​​block 102 is fixedly connected to the top of the connecting body 101, and the snap-fit ​​block 102 snaps into the inside of the snap-fit ​​groove 9.

[0026] The connecting assembly 100 consists of a connecting body 101 and a connecting cover 105. The connecting body 101 is located at the bottom of the connecting screw hole 8 of the drone connecting arm 5, and the connecting cover 105 is bolted to the bottom of the connecting body 101. The connecting cover 105 and the connecting body 101 are threadedly connected to the connecting screw hole 8 by connecting bolts 106 passing through its interior, thereby fixing the entire protective device to the drone bracket 1. A snap-fit ​​block 102 is fixedly connected to the top of the connecting body 101. The snap-fit ​​block 102 is typically a protruding structure. During installation, the connecting bolt 102 is inserted into the arc-shaped locking groove 9 on the outer circumference of the connecting screw hole 8, forming a radial lock to prevent the protective device from rotating relative to the connecting arm 5 during flight. The tightening force of the connecting bolt 106 clamps the connecting body 101 and the connecting cover 105 to the connecting arm 5, providing stable axial fixation. The arc design of the locking groove 9 is less than 360 degrees, usually 180 degrees, ensuring that the locking block 102 can only be inserted at a specific angle, avoiding incorrect installation. This connection structure shares the centrifugal force and vibration during flight, and improves reliability through mechanical interlocking and threaded fastening.

[0027] An outer ring guide rail 103 is fixedly connected to the outer circumferential surface of the connecting body 101. At least two circumferentially distributed connecting blocks 104 are provided on the outer circumferential surface of the connecting body 101. Threaded grooves are provided on the connecting blocks 104. Through grooves 204 with a number of connecting blocks 104 are provided on the connecting cover 105. The connecting blocks 104 and the connecting cover 105 are fixed by bolts that pass through the through grooves 204 and are threadedly connected to the threaded grooves.

[0028] An outer ring guide rail 103 is fixedly connected to the outer circumferential surface of the connecting body 101. The outer ring guide rail 103 is an annular structure used for the sliding movement of the first opening cover 206 and the second opening cover 211. At least two circumferentially distributed connecting blocks 104 are also provided on the outer circumferential surface of the connecting body 101. Each connecting block 104 is machined with a threaded groove for bolt fixing. The connecting cover 105 is provided with a number of through slots 204 equal to the number of connecting blocks 104. The through slots 204 are elongated oval holes. During installation, the connecting cover 105 is bolted through the through slots 204 and threadedly connected to the threaded grooves on the connecting blocks 104, thereby connecting the connecting blocks 105 to the connecting body 101. The connecting cover 105 is fixed to the connecting body 101, providing an adjustable fastening method for easy alignment and calibration during assembly. The outer ring guide rail 103 not only serves as a structural support but also provides sliding tracks for the bottom contact block 205 of the protective cover and the first rotating block 210 and the first rotating block 214, ensuring smooth opening and closing. The circumferential distribution of the connecting block 104 ensures that the connecting cover 105 is subjected to uniform force, preventing skewing or loosening. When the bolts are tightened, the connecting cover 105 presses against the connecting body 101, and the outer ring guide rail 103 serves as a reference surface, guiding the first opening and closing cover 206 and the second opening and closing cover 211 to move in the circumferential direction.

[0029] The bottom of the fixed protective cover 201 is fixedly connected to a bottom connecting block 205, which is fixedly connected to the outer circumferential surface of the outer ring guide rail 103. The bottom of the first opening and closing cover 206 is fixedly connected to a first rotating block 210, and the bottom of the second opening and closing cover 211 is fixedly connected to a second rotating block 214. The inner side of the outer ring guide rail 103 is provided with two symmetrically arranged arc-shaped guide grooves. The first rotating block 210 and the second rotating block 214 are respectively slidably assembled inside the two arc-shaped guide grooves.

[0030] A bottom connecting block 205 is fixedly connected to the bottom of the fixed protective cover 201. The bottom connecting block 205 is welded to the outer circumferential surface of the outer ring guide rail 103, thus making the fixed protective cover 201 a stationary part of the protective device, always surrounding a local area of ​​the wing body 7. A first rotating block 210 is fixedly connected to the bottom of the first opening and closing cover 206, and a second rotating block 214 is fixedly connected to the bottom of the second opening and closing cover 211. The first rotating block 210 and the second rotating block 214 are slider structures. Two symmetrically arranged arc-shaped guide grooves are provided inside the outer ring guide rail 103. The arc corresponds to the 270-degree opening and closing angle of the protective cover. The first rotating block 210 and the second rotating block 214 are respectively slidably assembled inside the two arc-shaped guide grooves. By manually pushing the first opening and closing cover 206 and the second opening and closing cover 211, the first rotating block 210 and the second rotating block 214 slide along the arc-shaped guide groove, thereby driving the opening and closing cover to rotate around the axis of the connecting assembly 100. When the opening and closing cover is fully opened, the rotating block reaches the end of the guide groove, with a limit angle of 270 degrees, providing maximum access space, ensuring the smoothness of the opening and closing process of the protective cover, and enhancing the durability of the overall structure.

[0031] The top of the fixed protective cover 201 is fixedly connected to a top plate 202, and the top plate 202 is provided with a number of circumferentially distributed through grooves 204. The top of the first opening cover 206 is fixedly connected to a lower plate 207, and the bottom of the lower plate 207 is provided with a number of lower studs 208 equal to the number of through slots 204. The top of the second opening cover 211 is fixedly connected to an upper connecting plate 212, and the top of the upper connecting plate 212 is provided with an upper stud 213 in a number equal to that of the through slot 204. The upper plate 212 and the lower plate 207 are fixedly connected by bolts that are threaded through the through slot 204, the upper stud 213 and the lower stud 208.

[0032] A top plate 202 is fixedly connected to the top of the fixed protective cover 201. The top plate 202 has several circumferentially distributed through slots 204, typically circular, for bolts to pass through. A lower plate 207 is fixedly connected to the top of the first opening cover 206. The bottom of the lower plate 207 has a number of lower studs 208 equal to the number of through slots 204. The lower studs 208 are threaded post structures. An upper plate 212 is fixedly connected to the top of the second opening cover 211. The top of the upper plate 212 has an number of upper studs 213 equal to the number of through slots 204. The upper studs 213 are also threaded posts. When the first opening cover 206 and the second opening cover 211 are closed... The upper plate 212 and the lower plate 207 are connected by bolts through the through slot 204, the upper stud 213, and the lower stud 208, thereby fixing the three protective cover parts together to form a complete protective ring. By tightening the bolts, the upper plate 212 and the lower plate 207 are tightened to ensure that the protective cover will not loosen during flight. When opened, the bolts are loosened, and the first opening cover 206 and the second opening cover 211 can slide and unfold along the outer ring guide rail 103. The circumferential distribution of the through slot 204 allows for uniform load distribution, while the corresponding design of the upper stud 213 and the lower stud 208 improves the assembly accuracy and ensures that the protective cover moves flexibly within the limit opening and closing range of 270 degrees.

[0033] Guide rings 203 are provided on both the upper and lower sides of the top plate 202, and guide grooves 209 are provided on the top of the first opening cover 206 and the bottom of the second opening cover 211. The guide rings 203 and guide grooves 209 fit together.

[0034] Guide rings 203 are provided on both the upper and lower sides of the top plate 202. The guide rings 203 are usually made of wear-resistant polymer and are annular protrusions. Guide grooves 209 are provided on the top of the first opening cover 206 and the bottom of the second opening cover 211. The guide grooves 209 are groove structures that fit together with the guide rings 203. When the protective cover is opened or closed, the guide rings 203 are embedded in the guide grooves 209, which play a guiding and radial restraining role, preventing the opening cover from shaking or deviating during movement. The force applied by the user is transmitted to the guide grooves 209 through the guide rings 203, causing the first opening cover 206 and the second opening cover 211 to slide along a predetermined arc path. The maximum opening angle is 270 degrees. The fit between the guide rings 203 and the guide grooves 209 reduces frictional resistance and ensures smooth operation. At the same time, it enhances the sealing of the protective cover when closed, prevents small foreign objects from entering, and improves the reliability and service life of the protective device. It is especially suitable for scenarios with frequent opening and closing, such as daily inspection or propeller replacement.

[0035] Drone working principle: The four corners of the drone support 1 are welded with outward extending connecting arms 5. Each connecting arm 5 is equipped with a brushless wing motor 6 at its end. Its output shaft directly drives the wing body 7 to rotate to generate lift. For the installation of protective devices, the connecting arm 5 is provided with a coaxial connecting screw hole 8 at the bottom of the wing motor 6. The outer periphery is machined with an arc-shaped snap-fit ​​groove 9. The bottom of the drone support 1 integrates the control power supply body 2, which serves as the flight brain and energy center. It is electrically connected to the vision module 3 through a cable to perceive the environment and precisely controls the speed of each wing motor 6 by outputting PWM signals, thereby achieving stable flight and maneuverability. During landing, the support bracket 4 provides stable support. Working principle of the drone propeller protection device: First, place the connecting body 101 of the connecting assembly 100 below the connecting screw hole 8, so that the snap-fit ​​block 102 on its top is accurately snapped into the snap-fit ​​groove 9 to achieve initial radial positioning and anti-rotation. Then, place the connecting cover 105 at the bottom of the connecting body 101, and use the connecting bolt 106 to pass through the connecting cover 105 and the connecting body 101 in sequence, and finally screw it into the connecting screw hole 8. After tightening the connecting bolt 106, the connecting body 101 and the connecting cover 105 clamp the connecting arm 5 to form a firm axial fixation. In order to further strengthen this connection, the connecting cover 105 is also fastened to the threaded groove on the connecting block 104, which is evenly distributed on the outer circumference of the connecting body 101, by an additional bolt passing through the through groove 204 on it. Furthermore, the protective cover body consists of a fixed protective cover 201, a first opening and closing cover 206, and a second opening and closing cover 211. The fixed protective cover 201 is fixed to the outer circumferential surface of the outer ring guide rail 103 connecting the main body 101 via a bottom connecting block 205, becoming a stationary part. The first opening and closing cover 206 and the second opening and closing cover 211 are slidably embedded into two symmetrical arc-shaped guide grooves inside the outer ring guide rail 103 via a first rotating block 210 and a second rotating block 214 at their bottoms. At the top of the protective cover, the top plate 202 of the fixed protective cover 201 is provided with guide rings 203 on the upper and lower sides, which are connected to the top of the first opening and closing cover 206 and the second opening and closing cover 211. The guide grooves 209 at the bottom fit together to ensure smooth opening and closing. When maintenance or propeller replacement is required, the bolts that fix the upper connecting plate 212, top connecting plate 202 and lower connecting plate 207 together can be loosened, and then the first opening and closing cover 206 and the second opening and closing cover 211 can be manually slid along the arc-shaped guide groove. The sliding limit of the first rotating block and the second rotating block in the guide groove is designed to be 270 degrees, so as to fully expose the wing body 7. After maintenance, the opening and closing cover is pushed back to the closed position and the top bolts are tightened again. At this time, the guide ring 203 fits tightly with the guide groove 209, which effectively resists external collisions during the flight of the UAV and ensures flight safety.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drone with a propeller protection device, comprising a drone support (1), wherein connecting arms (5) for mounting wing bodies (7) are provided at the four corners of the drone support (1), a wing motor (6) is mounted at one end of the connecting arm (5) away from the drone support (1), and the wing body (7) is mounted at the output end of the wing motor (6), characterized in that, The connecting arm (5) is located at the bottom of the wing motor (6) and has a connecting screw hole (8) coaxial with the axial position of the wing motor (6). The outer peripheral surface of the connecting screw hole (8) has an arc-shaped snap-fit ​​groove (9) with a radius of less than 360 degrees. The UAV also includes a propeller protection device, which includes a connecting component (100) for mounting the wing protective cover body (200) and a wing protective cover body (200) for protecting the wing body (7). The wing protective cover body (200) consists of a fixed protective cover (201), a first opening and closing cover (206), and a second opening and closing cover (211). The fixed protective cover (201) is fixedly connected to the outer peripheral surface of the connecting component (100). The first opening and closing cover (211) is fixedly connected to the outer peripheral surface of the connecting component (100). The cover (206) and the second opening cover (211) are slidably assembled inside the connecting assembly (100); the connecting assembly (100) consists of a connecting body (101) and a connecting cover (105). The connecting body (101) is located at the bottom of the connecting screw hole (8), and the connecting cover (105) is located at the bottom of the connecting body (101). The connecting cover (105) and the connecting body (101) are connected to the connecting screw hole (8) by a connecting bolt (106) passing through its interior, thereby connecting to the drone bracket (1); a snap-fit ​​block (102) is fixedly connected to the top of the connecting body (101), and the snap-fit ​​block (102) snaps into the inside of the snap-fit ​​groove (9).

2. A drone with a propeller protection device according to claim 1, characterized in that, The bottom of the drone bracket (1) is equipped with a control power supply unit (2) for control, and the control power supply unit (2) is electrically connected to a vision module (3). The bottom of the drone bracket (1) is fixedly connected to a support bracket (4) for drone support.

3. A drone with a propeller protection device according to claim 1, characterized in that, An outer ring guide rail (103) is fixedly connected to the outer circumferential surface of the connecting body (101). At least two circumferentially distributed connecting blocks (104) are provided on the outer circumferential surface of the connecting body (101). The connecting blocks (104) are provided with threaded grooves. The connecting cover (105) is provided with through grooves (204) in a number equivalent to the number of connecting blocks (104). The connecting blocks (104) and the connecting cover (105) are fixed by bolts that penetrate through the through grooves (204) and are threadedly connected to the threaded grooves.

4. A drone with a propeller protection device according to claim 3, characterized in that, The bottom of the fixed protective cover (201) is fixedly connected to a bottom connecting block (205), which is fixedly connected to the outer circumferential surface of the outer ring guide rail (103). The bottom of the first opening and closing cover (206) is fixedly connected to a first rotating block (210), and the bottom of the second opening and closing cover (211) is fixedly connected to a second rotating block (214). The inner side of the outer ring guide rail (103) is provided with two symmetrically arranged arc-shaped guide grooves. The first rotating block (210) and the second rotating block (214) are respectively slidably assembled inside the two arc-shaped guide grooves.

5. A drone with a propeller protection device according to claim 1, characterized in that, The top of the fixed protective cover (201) is fixedly connected to a top plate (202), and the top plate (202) is provided with a plurality of circumferentially distributed through slots (204); the top of the first opening cover (206) is fixedly connected to a lower plate (207), and the bottom of the lower plate (207) is provided with a number of lower studs (208) equal to the number of through slots (204); the top of the second opening cover (211) is fixedly connected to an upper plate (212), and the top of the upper plate (212) is provided with a number of upper studs (213) equal to the number of through slots (204); the upper plate (212) and the lower plate (207) are fixedly connected by bolts that thread through the through slots (204), the upper studs (213), and the lower studs (208).

6. A drone with a propeller protection device according to claim 5, characterized in that, The top plate (202) is provided with guide rings (203) on both the upper and lower sides. The top of the first opening cover (206) and the bottom of the second opening cover (211) are provided with guide grooves (209). The guide rings (203) and the guide grooves (209) fit together.

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