Unmanned aerial vehicle rotor wing protection mechanism

Abstract

The utility model relates to the field of unmanned aerial vehicle rotor wing protection, and discloses an unmanned aerial vehicle rotor wing protection mechanism which comprises an unmanned aerial vehicle shell, a plurality of contraction notches are formed in the periphery of the unmanned aerial vehicle shell, rotating shafts are rotatably connected to the interiors of the contraction notches, supporting rods are fixedly connected to the exteriors of the rotating shafts, and the supporting rods are fixedly connected to the interiors of the contraction notches. An adjusting retraction assembly is installed in the unmanned aerial vehicle shell, driving shafts are rotationally connected to the outer sides of the bottom ends of supporting rods correspondingly, mounting abutting pieces are fixedly connected to the upper sides of the exteriors of the driving shafts, rotor wing sleeves are embedded in the exteriors of the driving shafts, and a plurality of rotor wing blades are evenly and fixedly connected to the periphery of the exteriors of the rotor wing sleeves. And the exterior of the driving shaft is in threaded connection with a fixing sleeve. According to the unmanned aerial vehicle, the rotors are prevented from being damaged in the working process of the unmanned aerial vehicle, the safety of the rotors in the working process is improved, the space occupied by the unmanned aerial vehicle during placement is reduced, and the unmanned aerial vehicle is more flexibly placed.

Description

Technical Field

[0001] The utility model relates to the field of unmanned aerial vehicle (UAV) rotor protection, in particular to a UAV rotor protection mechanism. Background Art

[0002] A drone is an aircraft that does not require direct control by humans on board, also known as an unmanned aerial vehicle. A drone can perform flight missions through remote control or pre-set autonomous flight paths. It can be used in various fields such as aerial photography, agriculture, environmental monitoring, search and rescue, etc. The rotor of a drone is used to provide lift and stability.

[0003] After searching, a modularly connected plant protection UAV with announcement number CN218806564U includes a UAV main body, a protective mechanism and a motor seat. The outer wall of the motor seat is equipped with a protective mechanism, which is composed of a honeycomb mesh bottom cover, a rotor, a honeycomb mesh top cover, a fixing bolt and a rotating shaft. A honeycomb mesh bottom cover for protecting the rotor is welded to the seat wall of the motor seat. A rotating shaft for driving the rotor to rotate is installed at the motor power output end of the motor seat. The rotor for lifting is installed at the shaft wall of the rotating shaft. The cover opening of the honeycomb mesh bottom cover is connected to the cover opening of the honeycomb mesh top cover by fixing bolts, and the rotor is located between the honeycomb mesh bottom cover and the honeycomb mesh top cover. The protective mechanism can protect the UAV rotor to prevent the UAV rotor from contacting and being damaged by plants.

[0004] Based on the above patent, although the drone in the patented technology uses a honeycomb mesh bottom cover to protect the rotor and can avoid damage to the rotor to a certain extent, the structure of the drone will take up a large space when not working. Utility Model Content

[0005] In order to solve the above-mentioned technical defects, the purpose of the utility model is to provide a UAV rotor protection mechanism to improve the safety of the rotor working process and reduce the space occupied by the UAV when it is placed.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a UAV rotor protection mechanism, including a UAV shell, a plurality of contraction slots are opened on all four sides of the UAV shell, the inside of the contraction slots are rotatably connected with a rotating shaft, the outside of the rotating shaft is fixedly connected with a support rod, an adjustment retraction component is installed inside the UAV shell, the outside of the bottom end of the support rod is rotatably connected with a driving shaft, the upper side of the outside of the driving shaft is fixedly connected with a mounting piece, the outside of the driving shaft is nested with a rotor sleeve, a plurality of rotor blades are evenly fixedly connected around the outside of the rotor sleeve, the outside of the driving shaft is threadedly connected with a fixing sleeve, and a rotor protection component is installed on the lower side of the support rod.

[0007] Furthermore, the rotor protection assembly includes a connecting sleeve located on the outside of the bottom end of the support rod, the external thread of the connecting sleeve is connected to a mounting ring, a plurality of connecting rods are evenly fixedly connected to the outside of the mounting ring, the outside of the connecting rods is fixedly connected to an upper support ring, the bottom end of the upper support ring is evenly fixedly connected to a plurality of support plates, the bottom end of the support plate is fixedly connected to a lower support ring, and the bottom end of the upper support ring is connected to the top of the lower support ring through a plurality of air inlet fins.

[0008] The adjustment and retraction assembly includes a bidirectional threaded rod located inside the drone shell, and both sides of the outside of the bidirectional threaded rod are threadedly connected with traction tooth blocks. The rear end of the drone shell is fixedly connected to a drive motor, and the inner side of the outside of the support rod is evenly fixedly connected with a plurality of retraction tooth blocks, and the traction tooth blocks are meshingly connected with the retraction tooth blocks.

[0009] The driving end of the driving motor is fixedly connected to the rear end of the bidirectional threaded rod.

[0010] The outsides of the traction gear blocks are respectively and correspondingly connected to the two sides of the inside of the drone shell in a sliding manner.

[0011] A plurality of lower support rings are distributed inside the compartments formed by a plurality of support plates.

[0012] The inner circle of the upper support ring is smaller than the inner circle of the lower support ring.

[0013] The utility model has the following beneficial effects: the rotor is protected by the UAV shell, support rod, upper support ring, support plate, air inlet fin, lower support ring, mounting ring, connecting rod and connecting sleeve, thereby preventing the rotor from being damaged during operation of the UAV and improving the safety of the rotor operation process.

[0014] The retraction of the drone is completed through the drone shell, the retraction slot, the support rod, the rotating shaft, the retraction tooth block, the bidirectional threaded rod, the traction tooth block, and the driving motor, thereby reducing the space occupied by the drone when placed, and making the placement of the drone more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 for Figure 1 Rear view of.

[0017] Figure 3 It is a schematic diagram of the interior of the UAV shell in the utility model.

[0018] Figure 4 It is a structural schematic diagram of the air inlet fin plate in the utility model.

[0019] Figure 5 It is a structural schematic diagram of the support rod in the utility model.

[0020] Attached Figure 1-5 , 1. UAV shell; 2. Retraction notch; 3. Support rod; 4. Upper support ring; 5. Support plate; 6. Air inlet fin; 7. Lower support ring; 8. Drive motor; 9. Rotating shaft; 10. Traction gear block; 11. Bidirectional threaded rod; 12. Retraction gear block; 13. Mounting ring; 14. Connecting rod; 15. Connecting sleeve; 16. Mounting piece; 17. Drive shaft; 18. Rotor blade; 19. Rotor sleeve; 20. Fixed sleeve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1 , Figure 4 and Figure 5 The utility model provides an embodiment: a UAV rotor protection mechanism, including a UAV shell 1, a plurality of contraction slots 2 are provided around the UAV shell 1, the inside of the contraction slots 2 are rotatably connected with a rotating shaft 9, the outside of the rotating shaft 9 is fixedly connected with a support rod 3, an adjustment retraction component is installed inside the UAV shell 1, the bottom outer side of the support rod 3 is rotatably connected with a driving shaft 17, the upper outer side of the driving shaft 17 is fixedly connected with a mounting piece 16, a rotor cover 19 is nested outside the driving shaft 17, a plurality of rotor blades 18 are evenly fixedly connected to the outer periphery of the rotor cover 19, a fixing sleeve 20 is threadedly connected to the outer side of the driving shaft 17, and the support rod 3 is provided with a plurality of rotor blades 18. A rotor protection assembly is installed on the lower side, and the rotor protection assembly includes a connecting sleeve 15 located on the outside of the bottom end of the support rod 3, the external thread of the connecting sleeve 15 is connected to a mounting ring 13, and a plurality of connecting rods 14 are evenly fixedly connected to the outside of the mounting ring 13, and an upper support ring 4 is fixedly connected to the outside of the connecting rod 14, and a plurality of support plates 5 are evenly fixedly connected to the bottom end of the upper support ring 4, and a lower support ring 7 is fixedly connected to the bottom end of the support plate 5, and the bottom end of the upper support ring 4 is connected to the top end of the lower support ring 7 through a plurality of air inlet fins 6, and the plurality of lower support rings 7 are distributed inside the compartment formed by the plurality of support plates 5, and the inner circle of the upper support ring 4 is smaller than the inner circle of the lower support ring 7.

[0023] When the drive shaft 17 rotates, the rotor blades 18 rotate rapidly, and the external air enters through the compartment formed by the top of the upper support ring 4 and the multiple air inlet fins 6, so that the air passes vertically through the inner side of the lower support ring 7 and acts downward, thereby lifting the drone shell 1, and the rotor blades 18 rotate inside the space surrounded by the air inlet fins 6, blocking external debris outside, thereby ensuring the stability of the rotor blades 18 during operation. When too much debris adheres to the outside of the air inlet fins 6, the fixing sleeve 20 is rotated, and the external thread of the drive shaft 17 contacts the inner thread of the fixing sleeve 20, thereby removing the fixing sleeve 20, pulling out the rotor sleeve 19 downward, and rotating the upper support ring 4, the inner thread of the mounting ring 13 contacts the outer thread of the connecting sleeve 15, thereby removing the air inlet fins 6, avoiding damage to the rotor of the drone during operation, and improving the safety of the rotor operation process.

[0024] Reference Figure 2 and Figure 3 The adjusting retraction assembly includes a bidirectional threaded rod 11 located inside the drone shell 1, and both sides of the outside of the bidirectional threaded rod 11 are threadedly connected with traction tooth blocks 10, the rear end of the drone shell 1 is fixedly connected with a driving motor 8, and the inner side of the outside of the support rod 3 is evenly fixedly connected with a plurality of retraction tooth blocks 12, and the traction tooth blocks 10 are meshedly connected with the retraction tooth blocks 12, and the driving end of the driving motor 8 is fixedly connected to the rear end of the bidirectional threaded rod 11, and the outside of the traction tooth blocks 10 are respectively slidably connected to the inner sides of the drone shell 1;

[0025] When the UAV stops working, the driving motor 8 is started to drive the bidirectional threaded rod 11 to rotate. As the external thread of the bidirectional threaded rod 11 contacts the internal thread of the traction tooth block 10, and the external threads on both sides of the bidirectional threaded rod 11 are in opposite directions, the traction tooth block 10 is moved inward at the same time, and the tooth surfaces on both sides of the traction tooth block 10 contact the retraction tooth block 12, thereby rotating the support rod 3, and the support rods 3 on both sides are pulled back at the same time to shrink, thereby reducing the space occupied by the UAV when it is placed, and the placement of the UAV is more flexible.

[0026] Working principle: When the drive shaft 17 rotates, the rotor blades 18 rotate rapidly, and the external air enters through the compartment formed by the top of the upper support ring 4 and the multiple air inlet fins 6, so that the air passes vertically through the inner side of the lower support ring 7 and acts downward, thereby lifting the drone shell 1, and the rotor blades 18 rotate inside the space surrounded by the air inlet fins 6, blocking external debris outside, ensuring the stability of the rotor blades 18 during operation. When the drone stops working, the drive motor 8 is started to drive the bidirectional threaded rod 11 to Rotate, thereby moving the traction tooth block 10 inward at the same time, and the tooth surfaces on both sides of the traction tooth block 10 contact with the retraction tooth block 12, thereby rotating the support rod 3, and the support rods 3 on both sides are pulled back at the same time, thereby shrinking. When too much debris adheres to the outside of the air inlet fin 6, the fixing sleeve 20 is rotated, and the external thread of the drive shaft 17 contacts with the internal thread of the fixing sleeve 20, thereby removing the fixing sleeve 20, pulling out the rotor sleeve 19 downward, and rotating the upper support ring 4, thereby disassembling the air inlet fin 6.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drone rotor protection mechanism, comprising a drone housing (1), characterized in that: The drone housing (1) is provided with a plurality of contraction slots (2) on all sides, the contraction slots (2) are rotatably connected to a rotating shaft (9) inside, the rotating shaft (9) is fixedly connected to a support rod (3) outside, an adjustment retraction assembly is installed inside the drone housing (1), the bottom end of the support rod (3) is rotatably connected to a driving shaft (17) outside, the upper side of the driving shaft (17) is fixedly connected to a mounting plate (16), a rotor sleeve (19) is nested outside the driving shaft (17), a plurality of rotor blades (18) are evenly fixedly connected to the outside of the rotor sleeve (19), the outside of the driving shaft (17) is threadedly connected to a fixing sleeve (20), and a rotor protection assembly is installed on the lower side of the support rod (3).

2. The UAV rotor protection mechanism according to claim 1, characterized in that: The rotor protection assembly comprises a connecting sleeve (15) located outside the bottom end of the support rod (3); the connecting sleeve (15) is externally threadedly connected to a mounting ring (13); a plurality of connecting rods (14) are evenly fixedly connected to the outside of the mounting ring (13); the outside of the connecting rods (14) is fixedly connected to an upper support ring (4); the bottom end of the upper support ring (4) is evenly fixedly connected to a plurality of support plates (5); the bottom end of the support plate (5) is fixedly connected to a lower support ring (7); and the bottom end of the upper support ring (4) is connected to the top end of the lower support ring (7) via a plurality of air inlet fins (6).

3. The UAV rotor protection mechanism according to claim 1, characterized in that: The adjustable retraction assembly comprises a bidirectional threaded rod (11) located inside the drone housing (1), both sides of the outside of the bidirectional threaded rod (11) are threadedly connected to traction tooth blocks (10), the rear end of the drone housing (1) is fixedly connected to a drive motor (8), the inner side of the outside of the support rod (3) is evenly fixedly connected to a plurality of retraction tooth blocks (12), and the traction tooth blocks (10) are meshingly connected to the retraction tooth blocks (12).

4. The UAV rotor protection mechanism according to claim 3 is characterized in that: The driving end of the driving motor (8) is fixedly connected to the rear end of the bidirectional threaded rod (11).

5. The UAV rotor protection mechanism according to claim 3 is characterized by: The exterior of the traction tooth block (10) is slidably connected to two sides of the interior of the drone housing (1) respectively.

6. The UAV rotor protection mechanism according to claim 2, characterized in that: The plurality of lower support rings (7) are distributed inside the compartments formed by the plurality of support plates (5).

7. The UAV rotor protection mechanism according to claim 2, characterized in that: The inner circle of the upper support ring (4) is smaller than the inner circle of the lower support ring (7).

Images