Propeller and propeller seat mounting structure of unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle propeller and propeller seat mounting structure. Comprising an unmanned aerial vehicle propeller, a propeller seat and a central screw shaft, one end of the central screw shaft is connected with an engine crankshaft, the other end of the central screw shaft is connected with the unmanned aerial vehicle propeller, a threaded rod and a pin are arranged on the unmanned aerial vehicle propeller, blades are arranged at the top end of the unmanned aerial vehicle propeller, and an elastic gasket is arranged between the unmanned aerial vehicle propeller and the propeller seat; the threaded rods are distributed on the unmanned aerial vehicle propeller, the upper ends of the threaded rods penetrate through the blades, fastening bolts are arranged at the tops of the threaded rods, and the lower ends of the threaded rods are fixed to the propeller base; the pins are distributed on the unmanned aerial vehicle propeller, the upper ends of the pins cover the bottoms of the blades, and the lower ends of the pins are fixed to the propeller base. According to the utility model, the shearing resistance can be improved, the propeller and the propeller seat are prevented from being damaged due to collision, the threaded rod is prevented from being broken, the service life of the unmanned aerial vehicle is prolonged, and the potential safety hazard is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles (UAVs), in particular to an installation structure of a propeller and a propeller seat of an UAV. Background Art

[0002] Drones are widely used in aerial photography, mapping, emergency response, transportation, etc. Drone propellers provide thrust, lift and flight direction control for drones and are one of the important components of drones. Figure 4 、 5 As shown, the existing drone propellers are directly installed on the propeller seat through threaded rods. It has been found in use that when the drone flies for a long time and multiple times, the threaded rods may break due to excessive shear force, which not only affects the service life of the drone, but also poses a great safety hazard. Utility Model Content

[0003] The purpose of the utility model is to provide a UAV propeller and propeller seat installation structure to achieve the purpose of improving shear resistance, avoiding threaded rod breakage, increasing the service life of the UAV, and avoiding safety hazards.

[0004] The drone propeller and propeller seat installation structure provided by the utility model includes a drone propeller, a propeller seat and a central screw shaft, one end of the central screw shaft is connected to the engine crankshaft, and the other end of the central screw shaft is connected to the drone propeller, a threaded rod and a pin are provided on the drone propeller, the top of the drone propeller is provided with a blade, and an elastic gasket is provided between the drone propeller and the propeller seat; the threaded rod is evenly distributed on the drone propeller, and the upper end of the threaded rod passes through the blade, the top of the threaded rod is provided with a fastening bolt, and the lower end of the threaded rod is fixed to the propeller seat; the pin is evenly distributed on the drone propeller, and the upper end of the pin covers the bottom of the blade, and the lower end of the pin is fixed to the propeller seat.

[0005] Furthermore, a threaded connecting rod is provided at the top end of the central screw shaft, the central screw shaft and the threaded connecting rod are integrally formed, and a locking nut is provided on the threaded connecting rod.

[0006] Furthermore, a bolt spring washer is provided between the anti-loosening nut and the blade.

[0007] Furthermore, the end of the threaded rod is fixed at 1 / 3 to 1 / 2 of the upper end of the paddle seat; the end of the pin is fixed at 1 / 2 to 2 / 3 of the upper end of the paddle seat.

[0008] Furthermore, the elastic gasket is any one of a polyurethane sheet, a rubber sheet, and a spring sheet.

[0009] Furthermore, the threaded rod is threadedly connected to the paddle seat, and the number of the threaded rods is 2 to 4; the pin is transitionally matched with the paddle seat, and the number of the pins is 2 to 4.

[0010] Furthermore, when the diameter of the propeller seat is 30mm~60mm, 2 threaded rods and 2 pins are provided on the propeller seat and the UAV propeller 1; when the diameter of the propeller seat is 60mm~80mm, 3 threaded rods and 3 pins are provided on the propeller seat and the UAV propeller.

[0011] The UAV propeller and propeller seat installation structure provided by the utility model has the following beneficial effects:

[0012] 1. The utility model installs the drone propeller on the propeller seat through a threaded rod and a pin. The threaded rod fixes the drone propeller, and the pin can limit and stop rotation. It has strong shear resistance, can improve shear resistance, avoid threaded rod breakage, increase the service life of the drone, and avoid safety hazards.

[0013] 2. The top of the propeller of the drone of the present invention is provided with a blade, which covers the pin to prevent the pin from falling off and flying out, thereby improving safety.

[0014] 3. An elastic gasket is provided between the propeller and the propeller seat of the drone of the present invention, which can prevent the propeller from vibrating, prevent the propeller from colliding with the propeller seat, prevent the propeller from wearing out, increase the service life of the drone, and avoid safety hazards.

[0015] 4. The central screw shaft of this utility model is equipped with a threaded connecting rod at the top, which can guide the central screw shaft for positioning, facilitating the installation of drone propellers. The threaded connecting rod and locknut can improve the fixing force and stability of drone propellers, avoiding safety hazards.

[0016] Therefore, the utility model can improve the shear resistance and prevent the propeller and the propeller seat from being damaged due to collision, thereby preventing the threaded rod from breaking, increasing the service life of the drone, and avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings partially disclose specific embodiments of the present utility model, wherein:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a structural sectional view of the utility model;

[0020] Figure 3 This utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0021] Figure 4This is a schematic diagram of the existing UAV propeller and propeller seat installation structure;

[0022] Figure 5 This is a cross-sectional view of the existing UAV propeller and propeller seat installation structure;

[0023] Reference numerals:

[0024] 1. UAV propeller; 11. Threaded rod; 12. Pin; 13. Fastening bolt;

[0025] 2. Paddle seat;

[0026] 3. Central screw shaft; 31. Threaded connecting rod; 32. Lock nut; 33. Bolt spring washer;

[0027] 4. Paddle blades;

[0028] 5. Elastic gasket;

[0029] 6. Engine crankshaft. DETAILED DESCRIPTION

[0030] like Figures 1-3 As shown, the drone propeller and propeller seat installation structure provided by the utility model includes a drone propeller 1, a propeller seat 2 and a central screw shaft 3, one end of the central screw shaft 3 is connected to the engine crankshaft 6, and the other end of the central screw shaft 3 is connected to the drone propeller 1, a threaded rod 11 and a pin 12 are provided on the drone propeller 1, the top of the drone propeller 1 is provided with a blade 4, and an elastic gasket 5 is provided between the drone propeller 1 and the propeller seat 2; the threaded rod 11 is evenly distributed on the drone propeller 1, and the upper end of the threaded rod 11 passes through the blade 4, the top of the threaded rod 11 is provided with a fastening bolt 13, and the lower end of the threaded rod 11 is fixed to the propeller seat 2; the pin 12 is evenly distributed on the drone propeller 1, and the upper end of the pin 12 covers the bottom of the blade 3, and the lower end of the pin 12 is fixed to the propeller seat 2.

[0031] When using the present invention, first, connect one end of the central screw shaft 3 to the engine crankshaft 6, and let the central screw shaft 3 pass through the drone propeller 1. Then, evenly install the threaded rod 11 and the pin 12 on the drone propeller 1, and fix the lower end of the threaded rod 11 and the lower end of the pin 12 on the propeller seat 2. After that, install the blade 4 on the upper end of the drone propeller 1, and after the upper end of the threaded rod 11 passes through the blade 4, use the fastening bolt 13 to fix it. The blade 4 covers the pin 12 to prevent the pin 12 from falling off and flying out. At the same time, the pin 12 can limit and stop rotation, and has strong shear resistance, which can improve the shear resistance, avoid the threaded rod from breaking, increase the service life of the drone, and avoid safety hazards.

[0032] like Figures 1-3As shown, a threaded connecting rod 31 is provided at the top of the central screw shaft 3, and a locknut 32 is installed on the threaded connecting rod 31. The central screw shaft 3 and the threaded connecting rod 31 are integrally formed, and the central screw shaft 3 can be guided and positioned to facilitate the installation of the drone propeller 1. The threaded connecting rod 31 and the locknut 32 can improve the fixing force and stability of the drone propeller 1, thereby preventing safety hazards.

[0033] like Figures 2-3 As shown, a bolt spring washer 33 is provided between the lock nut 32 and the blade 4. The bolt spring washer 33 can buffer the stress between the lock nut 32 and the blade 4, thereby improving the stability of the drone propeller 1.

[0034] like Figures 2-3 As shown, the end of threaded rod 11 is fixed to the upper 1 / 3 to 1 / 2 of propeller base 2; the end of pin 12 is fixed to the upper 1 / 2 to 2 / 3 of propeller base 2. Combining structural and mechanical design, threaded rod 11 and pin 12 work together to not only provide strong shear resistance, preventing the threaded rod from breaking, but also prevent rotation, extending the drone's service life and avoiding safety hazards.

[0035] The elastic gasket 5 is any one of a polyurethane sheet, a rubber sheet, and a spring sheet. The elastic gasket 5 can prevent the drone propeller 1 from vibrating, prevent the drone propeller 1 from colliding with the propeller seat 2, prevent the propeller 1 from wearing out, increase the service life of the drone, and avoid potential safety hazards.

[0036] The threaded rod 11 is threadedly connected to the propeller base 2, and the number of threaded rods 11 is 2 to 4. The pin 12 is transitionally matched with the propeller base 2, and the number of pins 12 is 2 to 4. The number of threaded rods 11 and pins 12 should be reasonably designed based on the model and specifications of the drone. For small drones with a propeller base 2 diameter of 30mm to 60mm, two threaded rods 11 and two pins 12 are generally designed, that is, two threaded rods 11 and two pins 12 are provided on the propeller base 2 and the drone propeller 1. For large drones with a propeller base 2 diameter of 60mm to 80mm, three threaded rods 11 and three pins 12 are generally designed, that is, three threaded rods 11 and three pins 12 are provided on the propeller base 2 and the drone propeller 1.

[0037] The technical solutions of the present invention are not limited to the scope of the present invention examples, and the technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. A UAV propeller and propeller seat mounting structure, comprising a UAV propeller (1), a propeller seat (2) and a central screw shaft (3), wherein one end of the central screw shaft (3) is connected to an engine crankshaft (6), and the other end of the central screw shaft (3) is connected to the UAV propeller (1), wherein the structure is characterized in that: The UAV propeller (1) is provided with a threaded rod (11) and a pin (12), the top of the UAV propeller (1) is provided with a blade (4), and an elastic gasket (5) is provided between the UAV propeller (1) and the blade seat (2); the threaded rod (11) is evenly distributed on the UAV propeller (1), and the upper end of the threaded rod (11) passes through the blade (4), the top of the threaded rod (11) is provided with a fastening bolt (13), and the lower end of the threaded rod (11) is fixed to the blade seat (2); the pin (12) is evenly distributed on the UAV propeller (1), and the upper end of the pin (12) covers the bottom of the blade (4), and the lower end of the pin (12) is fixed to the blade seat (2).

2. The UAV propeller and propeller seat mounting structure according to claim 1 is characterized in that: A threaded connecting rod (31) is provided at the top end of the central screw shaft (3). The central screw shaft (3) and the threaded connecting rod (31) are integrally formed, and a locking nut (32) is provided on the threaded connecting rod (31).

3. The UAV propeller and propeller seat mounting structure according to claim 2 is characterized in that: A bolt spring washer (33) is provided between the anti-loosening nut (32) and the blade (4).

4. The UAV propeller and propeller seat mounting structure according to claim 1 is characterized in that: The end of the threaded rod (11) is fixed at 1 / 3 to 1 / 2 of the upper end of the paddle seat (2); and the end of the pin (12) is fixed at 1 / 2 to 2 / 3 of the upper end of the paddle seat (2).

5. The UAV propeller and propeller seat mounting structure according to claim 1 is characterized in that: The elastic gasket (5) is any one of a polyurethane sheet, a rubber sheet, and a spring sheet.

6. The UAV propeller and propeller seat mounting structure according to claim 1 is characterized in that: The threaded rod (11) is threadedly connected to the paddle seat (2), and the number of the threaded rods (11) is 2 to 4; the pin (12) is transitionally matched with the paddle seat (2), and the number of the pin (12) is 2 to 4.

7. The UAV propeller and propeller seat mounting structure according to claim 6 is characterized in that: When the diameter of the propeller seat (2) is 30 mm to 60 mm, two threaded rods (11) and two pins (12) are provided on the propeller seat (2) and the UAV propeller (1); when the diameter of the propeller seat (2) is 60 mm to 80 mm, three threaded rods (11) and three pins (12) are provided on the propeller seat (2) and the UAV propeller (1).

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