Unmanned aerial vehicle with anti-winding propellers

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a propeller winding prevention unmanned aerial vehicle which comprises an unmanned aerial vehicle body, the unmanned aerial vehicle body is connected with a propeller shaft, the outer wall of the unmanned aerial vehicle body is fixedly connected with a fixing frame, the outer wall of the fixing frame is fixedly connected with a mounting frame, and the outer wall of the fixing frame is fixedly connected with a support. An electromagnetic clutch is arranged on the outer wall of the support, the electromagnetic clutch is connected with the paddle shaft, the electromagnetic clutch is connected with a spline shaft, a sleeve is slidably connected to the outer wall of the spline shaft, the outer wall of the sleeve is rotatably connected to the interior of the support, and a first bevel gear is fixedly connected to the upper surface of the sleeve. According to the unmanned aerial vehicle, by arranging a cutting structure composed of the electromagnetic clutch, the spline shaft, the sleeve, the bevel gear transmission mechanism and the cutting knife, the cutting knife can be automatically driven to rotate through power of the propeller shaft, sundries are rapidly cut off, normal flight of the propeller is prevented from being affected due to the fact that the sundries are wound around the propeller, and safety and stability of flight of the unmanned aerial vehicle are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a propeller-resistant anti-entanglement UAV. Background Technology

[0002] With the rapid development of drone technology, drones, thanks to their high mobility, flexibility, and convenience, have been widely applied in numerous fields such as agricultural and forestry monitoring, environmental inspection, emergency rescue, and power line inspection. When a drone is performing a mission, the propeller, as the core power component, directly affects the stability and safety of the flight.

[0003] During actual drone flight operations, the flight environment is complex and ever-changing, often encountering various debris that can entangle the propellers, such as power lines, tree branches, and threads. Once the propellers are entangled by these debris, their rotational speed will be greatly hindered, and their power output will be significantly reduced. This can lead to loss of control over the drone's flight attitude, inability to maintain flight altitude, and in severe cases, even cause the drone to crash, resulting in equipment damage and economic losses, and may also pose a threat to the surrounding environment and personnel safety. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a propeller-resistant drone, which aims to improve the problem of propellers being entangled by these debris, causing the drone to lose control of its flight attitude, and in severe cases, even causing the drone to crash, resulting in equipment damage and economic losses.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An anti-entanglement propeller-driven drone includes a drone body connected to a propeller shaft. A mounting frame is fixedly connected to the outer wall of the drone body, and a support is fixedly connected to the outer wall of the mounting frame. An electromagnetic clutch is provided on the outer wall of the support and connected to the propeller shaft. The electromagnetic clutch is connected to a splined shaft, and a sleeve is slidably connected to the outer wall of the splined shaft. The outer wall of the sleeve is rotatably connected to the inside of the support. A bevel gear one is fixedly connected to the upper surface of the sleeve. A transmission mechanism is connected to the bevel gear one, and the transmission mechanism is connected to a bevel gear three. The upper surface of the bevel gear three is rotatably connected to the inside of the mounting frame. A shearing assembly is connected to the bevel gear three and the bevel gear one.

[0007] Preferably, the shearing assembly includes a first cutter and a second cutter, the outer wall of the first cutter being fixedly connected to the outer wall of the third bevel gear, and the outer wall of the second cutter being fixedly connected to the outer wall of the first bevel gear.

[0008] Preferably, the transmission mechanism includes a second bevel gear, the tooth end of which meshes with the tooth ends of both a third bevel gear and a first bevel gear. The second bevel gear has a rotating shaft rotatably connected inside, and both ends of the rotating shaft are fixedly connected to the outer wall of the fixed frame.

[0009] Preferably, the mounting bracket has a limiting groove inside, and a semi-circular body is attached to the outer wall of the mounting bracket.

[0010] Preferably, a horizontal bar is fixedly connected to the outer wall of the semicircle, and a vertical bar is fixedly connected to the outer wall of the horizontal bar.

[0011] Preferably, a limiting block is fixedly connected to the outer wall of the semicircular body, the outer wall of the limiting block is slidably connected to the inside of the limiting groove, a limiting hole is opened inside the limiting block, and the limiting block is provided with an inclined surface.

[0012] Preferably, the mounting bracket has a sliding rod slidably connected inside, the outer wall of the sliding rod is connected to the inside of the limiting hole, and the sliding rod is provided with a second inclined surface, the first inclined surface being connected to the second inclined surface.

[0013] Preferably, a control frame is fixedly connected to the top of the slide rod, one end of a tension spring is fixedly connected to the lower surface of the control frame, and the other end of the tension spring is fixedly connected to the upper surface of the mounting frame.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by setting up a cutting structure consisting of an electromagnetic clutch, a splined shaft, a sleeve, a bevel gear transmission mechanism, and a cutter, it is possible to automatically drive the cutter to rotate using the propeller shaft power, quickly cut off debris, prevent the propeller from being affected by debris entanglement and ensure the safety and stability of the UAV flight.

[0016] 2. In this utility model, by setting a limiting groove, sliding rod, control frame, tension spring and other structures on the mounting frame, and cooperating with the limiting block and inclined surface on the semi-circular body, the protective barrier can be quickly installed and disassembled. It not only facilitates the protection of the propeller when needed, but also allows it to be easily removed when protection is not needed, reducing the extra burden during flight and improving the flexibility and convenience of using the drone. Attached Figure Description

[0017] Figure 1 This is a perspective view of the propeller-resistant anti-entanglement drone proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the cutter of the propeller-resistant anti-entanglement drone proposed in this utility model;

[0019] Figure 3This is a schematic diagram of the three-part bevel gear structure of the propeller-resistant anti-entanglement UAV proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the tension spring of the propeller anti-entanglement drone proposed in this utility model.

[0021] Legend:

[0022] 1. Unmanned aerial vehicle (UAV) body; 2. Propeller shaft; 3. Fixing frame; 4. Mounting frame; 5. Bracket; 6. Electromagnetic clutch; 7. Splined shaft; 8. Sleeve; 9. Bevel gear one; 10. Transmission mechanism; 1001. Bevel gear two; 1002. Rotating shaft; 11. Bevel gear three; 12. Shearing assembly; 1201. Cutting blade one; 1202. Cutting blade two; 13. Semicircular body; 14. Horizontal bar; 15. Vertical bar; 16. Limiting block; 17. Inclined surface one; 18. Limiting groove; 19. Slide rod; 20. Inclined surface two; 21. Control frame; 22. Tension spring; 23. Limiting hole. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-3 An embodiment of this utility model provides a propeller-protected anti-entanglement drone, comprising a drone body 1, a propeller shaft 2 connected to the drone body 1, a fixed frame 3 fixedly connected to the outer wall of the drone body 1, a mounting frame 4 fixedly connected to the outer wall of the fixed frame 3, a bracket 5 fixedly connected to the outer wall of the fixed frame 3, an electromagnetic clutch 6 provided on the outer wall of the bracket 5, the electromagnetic clutch 6 being connected to the propeller shaft 2, a spline shaft 7 connected to the electromagnetic clutch 6, a sleeve 8 slidably connected to the outer wall of the spline shaft 7, the outer wall of the sleeve 8 being rotatably connected to the inside of the bracket 5, a bevel gear 9 fixedly connected to the upper surface of the sleeve 8, a transmission mechanism 10 connected to the bevel gear 11 connected to the transmission mechanism 10, a bevel gear 11 rotatably connected to the upper surface of the bevel gear 11 being rotatably connected to the inside of the mounting frame 4, and a shearing assembly 12 connected to the bevel gear 11 and the bevel gear 9.

[0025] Specifically, the drone body 1 fixes the mounting bracket 3, and the mounting bracket 3 fixes the mounting frame 4. When it is necessary to cut debris, the electromagnetic clutch 6 can be activated to make the propeller shaft 2 drive the spline shaft 7 to rotate. The spline shaft 7 drives the sleeve 8 to rotate. The bracket 5 supports the rotation of the sleeve 8. The sleeve 8 drives the first bevel gear 9 to rotate. The first bevel gear 9 drives the third bevel gear 11 to rotate through the transmission mechanism 10. The first bevel gear 9 and the third bevel gear 11 drive the shearing assembly 12 to rotate, thereby cutting the debris. When cutting is not required, the electromagnetic clutch 6 can be disconnected from the spline shaft 7.

[0026] Reference Figure 3 The shearing assembly 12 includes a first cutter 1201 and a second cutter 1202. The outer wall of the first cutter 1201 is fixedly connected to the outer wall of the third bevel gear 11, and the outer wall of the second cutter 1202 is fixedly connected to the outer wall of the first bevel gear 9.

[0027] Specifically, cutter 1201 is fixedly connected to bevel gear 311, while cutter 21202 is fixedly connected to bevel gear 9. When bevel gear 9 and bevel gear 31 rotate, they drive cutter 1201 and cutter 21202 to rotate, thereby cutting the debris.

[0028] Reference Figures 2-3 The transmission mechanism 10 includes a second bevel gear 1001. The tooth ends of the second bevel gear 1001 mesh with the tooth ends of the third bevel gear 11 and the first bevel gear 9. The inner part of the second bevel gear 1001 is rotatably connected to a rotating shaft 1002. Both ends of the rotating shaft 1002 are fixedly connected to the outer wall of the fixed frame 3.

[0029] Specifically, bevel gear 9 drives bevel gear 2 1001 to rotate, bevel gear 2 1001 meshes with bevel gear 3 11 and rotates, bevel gear 9 and bevel gear 3 11 rotate in opposite directions, and shaft 1002 supports bevel gear 2 1001 to rotate.

[0030] Reference Figure 4 The mounting frame 4 has a limiting groove 18 inside, and a semi-circular body 13 is attached to the outer wall of the mounting frame 4. A horizontal bar 14 is fixedly connected to the outer wall of the semi-circular body 13, and a vertical bar 15 is fixedly connected to the outer wall of the horizontal bar 14. A limiting block 16 is fixedly connected to the outer wall of the semi-circular body 13, and the outer wall of the limiting block 16 is slidably connected to the inside of the limiting groove 18. A limiting hole 23 is opened inside the limiting block 16, and the limiting block 16 is provided with an inclined surface 17.

[0031] Specifically, the semicircular body 13, the horizontal bar 14, and the vertical bar 15 form a protective barrier. When the semicircular body 13 needs to be installed, the limiting block 16 can be inserted into the limiting groove 18 to connect the mounting bracket 4 with the semicircular body 13.

[0032] Reference Figure 4The mounting bracket 4 has a sliding rod 19 inside, the outer wall of the sliding rod 19 is connected to the inside of the limiting hole 23, the sliding rod 19 is provided with a second inclined surface 20, the first inclined surface 17 is connected to the second inclined surface 20; the top of the sliding rod 19 is fixedly connected to a control frame 21, the lower surface of the control frame 21 is fixedly connected to one end of a tension spring 22, and the other end of the tension spring 22 is fixedly connected to the upper surface of the mounting bracket 4;

[0033] Specifically, when the limiting block 16 is inserted into the limiting groove 18, the first inclined plane 17 pushes the second inclined plane 20 to slide, causing the slide rod 19 to rise and the tension spring 22 to be stretched. Then the tension spring 22 rebounds, causing the slide rod 19 to be inserted into the limiting hole 23, thereby fixing the mounting bracket 4 and the semi-circular body 13. When it is necessary to disassemble the semi-circular body 13, the control bracket 21 can be pulled to drive the slide rod 19 out of the limiting hole 23.

[0034] Working principle: When the drone propeller is entangled with debris, the electromagnetic clutch 6 is activated to connect it with the spline shaft 7. At this time, the drone propeller shaft 2 starts to rotate and drives the spline shaft 7 to rotate. The spline shaft 7 then drives the sleeve 8 to rotate under the support of the bracket 5. When the sleeve 8 rotates, the bevel gear 9 on its upper surface rotates accordingly. The bevel gear 9 transmits power to the bevel gear 11 through the bevel gear 2 1001. The bevel gear 9 and the bevel gear 3 11 rotate in opposite directions. The cutter 2 1202 fixed on the bevel gear 9 and the cutter 1201 fixed on the bevel gear 3 11 also rotate in opposite directions. Through the relative movement of the two cutters, the debris entangled on the propeller is cut off. After the cutting is completed, the electromagnetic clutch 6 is closed to disconnect it from the spline shaft 7 and the cutting action is stopped.

[0035] When installing the protective barrier, the protective barrier, consisting of a semicircular body 13, a horizontal bar 14, and a vertical bar 15, is brought close to the mounting frame 4. The limiting block 16, which is fixedly connected to the outer wall of the semicircular body 13, is aligned with the limiting groove 18 inside the mounting frame 4 and inserted. During the insertion process, the inclined surface 17 of the limiting block 16 contacts the inclined surface 20 of the sliding rod 19 and pushes the sliding rod 19 upward. When the limiting block 16 is fully inserted into the limiting groove 18, the tension spring 22 rebounds, causing the sliding rod 19 to descend and insert into the limiting hole 23 inside the limiting block 16, thereby fixing the mounting frame 4 and the semicircular body 13, completing the installation of the protective barrier. When it is necessary to disassemble the protective barrier, the control frame 21 is pulled. The control frame 21 causes the sliding rod 19 to rise, causing the sliding rod 19 to disengage from the limiting hole 23. At this time, the semicircular body 13 can be removed from the mounting frame 4, completing the disassembly.

[0036] 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 propeller-driven anti-entanglement unmanned aerial vehicle (UAV), comprising a UAV body (1), wherein the UAV body (1) is connected to a propeller shaft (2), characterized in that: The outer wall of the unmanned aerial vehicle (1) is fixedly connected to a fixed frame (3), the outer wall of the fixed frame (3) is fixedly connected to a mounting frame (4), the outer wall of the fixed frame (3) is fixedly connected to a bracket (5), the outer wall of the bracket (5) is provided with an electromagnetic clutch (6), the electromagnetic clutch (6) is connected to the propeller shaft (2), the electromagnetic clutch (6) is connected to a spline shaft (7), the outer wall of the spline shaft (7) is slidably connected to a sleeve (8), the outer wall of the sleeve (8) is rotatably connected to the inside of the bracket (5), the upper surface of the sleeve (8) is fixedly connected to a bevel gear (9), the bevel gear (9) is connected to a transmission mechanism (10), the transmission mechanism (10) is connected to a bevel gear (11), the upper surface of the bevel gear (11) is rotatably connected to the inside of the mounting frame (4), the bevel gear (11) and the bevel gear (9) are connected to a shearing assembly (12).

2. The propeller anti-winding drone of claim 1, wherein: The shearing assembly (12) includes a first cutter (1201) and a second cutter (1202). The outer wall of the first cutter (1201) is fixedly connected to the outer wall of the third bevel gear (11), and the outer wall of the second cutter (1202) is fixedly connected to the outer wall of the first bevel gear (9).

3. The propeller anti-winding drone of claim 1, wherein: The transmission mechanism (10) includes a second bevel gear (1001), the tooth ends of which are simultaneously meshed with the tooth ends of a third bevel gear (11) and a first bevel gear (9). A rotating shaft (1002) is rotatably connected inside the second bevel gear (1001), and both ends of the rotating shaft (1002) are fixedly connected to the outer wall of the fixed frame (3).

4. The propeller anti-winding drone of claim 1, wherein: The mounting bracket (4) has a limiting groove (18) inside, and a semi-circular body (13) is attached to the outer wall of the mounting bracket (4).

5. The propeller anti-winding drone of claim 4, wherein: A horizontal bar (14) is fixedly connected to the outer wall of the semicircular body (13), and a vertical bar (15) is fixedly connected to the outer wall of the horizontal bar (14).

6. The propeller anti-winding drone of claim 5, wherein: The outer wall of the semicircular body (13) is fixedly connected to a limiting block (16), the outer wall of the limiting block (16) is slidably connected to the inside of the limiting groove (18), the inside of the limiting block (16) is provided with a limiting hole (23), and the limiting block (16) is provided with an inclined surface (17).

7. The propeller anti-winding drone of claim 6, wherein: The mounting bracket (4) has a sliding rod (19) inside, the outer wall of the sliding rod (19) is connected to the inside of the limiting hole (23), the sliding rod (19) is provided with a second inclined surface (20), and the first inclined surface (17) is connected to the second inclined surface (20).

8. The propeller anti-winding drone of claim 7, wherein: The top of the slide bar (19) is fixedly connected to a control frame (21), and one end of a tension spring (22) is fixedly connected to the lower surface of the control frame (21). The other end of the tension spring (22) is fixedly connected to the upper surface of the mounting frame (4).

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