A drone transmission assembly

Abstract

The utility model discloses a kind of unmanned aerial vehicle transmission assemblies, still including transmission component part and heat dissipation component part;Transmission component part: it includes unmanned aerial vehicle propeller installation shaft, first gear, motor installation shaft, planetary gear carrier and second gear, the unmanned aerial vehicle propeller installation shaft is set in the upper side wall middle part of shell, the lower end of unmanned aerial vehicle propeller installation shaft is fixedly connected with first gear, the lower side wall middle part of shell is equipped with motor installation shaft, the upper end of motor installation shaft is fixedly connected with planetary gear carrier, the upper and lower inner wall of planetary gear carrier is rotatably connected with the second gear of evenly distributed, three second gears are engaged with a first gear;Heat dissipation component part: it is set in the inside of shell, the transmission component part still includes gear ring, the gear ring is fixedly connected on the lower side wall of shell, three second gears are engaged with a gear ring, this unmanned aerial vehicle transmission assembly, transmission part structural stability is good, simultaneously transmission efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV transmission component. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices. From a technical perspective, they can be divided into several categories: unmanned helicopters, unmanned hexacopter aircraft, unmanned multi-rotor aircraft, unmanned airships, and unmanned paragliders.

[0003] In the existing technology, the traditional transmission components of drone rotors are driven by electric motors to rotate the drone rotors. This direct drive method of rotor rotation places high demands on the motor. If conventional motors are used, the stability of the motor output shaft will deteriorate after long-term use. At the same time, the motor speed directly determines the rotor speed, resulting in low transmission efficiency. Therefore, we propose a drone transmission component. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a transmission component for unmanned aerial vehicles (UAVs) with good structural stability and high transmission efficiency, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a UAV transmission assembly, including a housing, transmission components, and heat dissipation components;

[0006] Transmission components: These include a drone propeller mounting shaft, a first gear, a motor mounting shaft, a planetary gear carrier, and a second gear. The drone propeller mounting shaft is located in the middle of the upper side wall of the housing. The lower end of the drone propeller mounting shaft is fixedly connected to the first gear. The lower side wall of the housing has a motor mounting shaft in the middle. The upper end of the motor mounting shaft is fixedly connected to the planetary gear carrier. The upper and lower inner walls of the planetary gear carrier are rotatably connected to evenly distributed second gears. The three second gears mesh with one first gear.

[0007] Heat dissipation components: These are located inside the casing, and the transmission part has good structural stability and high transmission efficiency.

[0008] Furthermore, the transmission component also includes a gear ring, which is fixedly connected to the lower side wall of the housing. Three second gears mesh with one gear ring to realize the function of driving the second gears to rotate from the outside.

[0009] Furthermore, the upper surface of the housing is provided with evenly distributed oiling nozzles, and a cover plate is fixedly connected to the upper surface of the housing by screws to realize the oiling function.

[0010] Furthermore, the outer arc surface of the housing is provided with evenly distributed side clearance openings to facilitate the installation of heat dissipation components.

[0011] Furthermore, the heat dissipation components include heat transfer plates, connecting copper sheets, and heat dissipation fin plates. The connecting copper sheets are respectively fixedly connected to the interior of the four side clearance openings. The heat transfer plates are respectively fixedly connected to the ends of the four connecting copper sheets facing the center of the casing. The arc surfaces of the four heat transfer plates are in contact with the outer arc surface of a toothed ring. The heat dissipation fin plates are respectively fixedly connected to the ends of the four connecting copper sheets away from the center of the casing, thereby realizing the heat dissipation function.

[0012] Furthermore, the lower surface of the housing is fixedly connected with evenly distributed mounting feet, and the upper surface of the mounting feet is respectively provided with threaded holes to realize the function of fixing the housing.

[0013] Furthermore, the outer arc surface of the UAV propeller mounting shaft and the outer arc surface of the motor mounting shaft are respectively fixedly connected with support bearings, and the outer ring surface of the outer arc surface of the two support bearings is fixedly connected to the inner wall of a housing to realize the function of supporting the shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This UAV transmission assembly has the following advantages:

[0015] When the motor drives the drone propeller to rotate, a planetary gear acceleration structure is installed between the motor and the propeller. This reduces the motor speed requirement while ensuring that the speed provided by the propeller remains constant during drone flight. The transmission structure has good stability and high transmission efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention in an explosion.

[0018] Figure 3 This is a schematic diagram of the internal structure of the casing of this utility model;

[0019] Figure 4 This is a schematic diagram of the heat dissipation component of this utility model.

[0020] In the diagram: 1. Housing; 2. Transmission components; 21. UAV propeller mounting shaft; 22. First gear; 23. Motor mounting shaft; 24. Planetary gear carrier; 25. Second gear; 26. Gear ring; 3. Oiling port; 4. Cover plate; 5. Side clearance opening; 6. Heat dissipation components; 61. Heat transfer plate; 62. Connecting copper sheet; 63. Heat dissipation fin plate; 7. Mounting feet. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This embodiment provides a technical solution: a drone transmission component, including a housing 1, transmission components 2 and heat dissipation components 6. The upper surface of the housing 1 is provided with uniformly distributed oiling ports 3. The upper surface of the housing 1 is fixedly connected to a cover plate 4 by screws. The outer arc surface of the housing 1 is provided with uniformly distributed side clearance openings 5. The lower surface of the housing 1 is fixedly connected with uniformly distributed mounting feet 7. The upper surface of the mounting feet 7 is provided with threaded holes respectively.

[0023] Transmission component 2 includes a drone propeller mounting shaft 21, a first gear 22, a motor mounting shaft 23, a planetary gear carrier 24, and second gears 25. The drone propeller mounting shaft 21 is located in the middle of the upper side wall of the housing 1. The lower end of the drone propeller mounting shaft 21 is fixedly connected to the first gear 22. The lower side wall of the housing 1 is provided with the motor mounting shaft 23. The upper end of the motor mounting shaft 23 is fixedly connected to the planetary gear carrier 24. The upper and lower inner walls of the planetary gear carrier 24 are rotatably connected to evenly distributed second gears 25. The three second gears 25 mesh with one first gear 22. Component 2 also includes a gear ring 26, which is fixedly connected to the lower side wall of the housing 1. Three second gears 25 mesh with one gear ring 26. Support bearings are fixedly connected to the outer arc surface of the UAV propeller mounting shaft 21 and the outer arc surface of the motor mounting shaft 23, respectively. The outer ring surfaces of the outer arc surfaces of the two support bearings are fixedly connected to the inner wall of one of the housing 1 (wherein, the UAV propeller mounting shaft 21 is fixedly sleeved with the inner wall of the corresponding support bearing, and the outer ring surface of the support bearing is fixedly connected to the inner wall of the circular hole one opened in the middle of the upper surface of the housing 1, while the motor mounting shaft 23 is fixedly sleeved with the inner wall of the corresponding support bearing). The outer ring surface of the support bearing is fixedly connected to the inner wall of the second circular hole in the middle of the lower surface of the housing 1. When the transmission component is needed, the housing 1 can be installed into the drive position of the drone through the threaded holes on the mounting feet 7 and the external screws. Then, the lower end of the motor mounting shaft 23 is fixed to the output shaft of the drone's brushless motor, and the drone's propeller is installed onto the upper end of the drone propeller mounting shaft 21. When the drone needs to start, the output shaft of the drone's brushless motor rotates, thereby driving the motor mounting shaft 23 to rotate, which in turn drives the planetary gear carrier 24 to rotate around the motor. The central axis of the mounting shaft 23 rotates, during which the three second gears 25 rotate around the central axis of the motor mounting shaft 23. The three second gears 25 maintain a meshing relationship with the gear ring 26. When the three second gears 25 revolve around the central axis of the motor mounting shaft 23, they will also rotate on their own axis (the number of teeth of the second gear 25 is thirty times the number of teeth of the first gear 22), and the three second gears 25 rotate in the same direction. At this time, the first gear 22 will be driven to rotate, which in turn will drive the drone propeller mounting shaft 21 to rotate at high speed, and drive the drone propeller to rotate at high speed.

[0024] Heat dissipation component 6: Heat dissipation component 6 includes a heat transfer plate 61, connecting copper sheets 62, and heat dissipation fins 63. The connecting copper sheets 62 are respectively fixedly connected to the interior of the four side clearance openings 5. The ends of the four connecting copper sheets 62 facing the center of the housing 1 are respectively fixedly connected to the heat transfer plate 61 (the heat transfer plate 61 is an arc-shaped copper sheet, and the arc surfaces of these four arc-shaped copper sheets are in close contact with the outer arc surface of the toothed ring 26). The arc surfaces of the four heat transfer plates 61 are in contact with the outer arc surface of one toothed ring 26. The ends of the four connecting copper sheets 62 away from the center of the housing 1 are respectively fixedly connected to the heat dissipation fins 63. During the rotation of the UAV's propeller, the upper side of the heat dissipation fins 63 are heated. The airflow will flow downwards, passing over the fin surface of the heat dissipation fin plate 63 and carrying away the heat from the fin surface. Heat will be generated when the first gear 22, the second gear 25 and the gear ring 26 mesh. Therefore, before this, the cover plate 4 needs to be opened and some lubricating oil (polyalphaolefin PAO type lubricating oil can be used) is applied to the inside of the housing 1 through the oiling port 3. The lubricating oil lubricates the gear surface and can accelerate the heat conduction rate, transferring the heat to the gear ring 26. At this time, the heat transfer plate 61 is in contact with the outer arc surface of the gear ring 26, and the heat is then conducted to the outer surface of the heat dissipation fin plate 63 by the heat transfer plate 61 to perform heat dissipation.

[0025] The working principle of the drone transmission component provided by this utility model is as follows: When the transmission component is needed, the housing 1 can be installed into the drive position of the drone through the threaded holes on the mounting feet 7 and the external screws. Then, the lower end of the motor mounting shaft 23 is fixed to the output shaft of the drone's brushless motor, and the drone's propeller is installed onto the upper end of the drone propeller mounting shaft 21. When the drone needs to start, the output shaft of the drone's brushless motor rotates, thereby driving the motor mounting shaft 23 to rotate, which in turn drives the planetary gear carrier 24 to rotate around the central axis of the motor mounting shaft 23. During this period, the three second gears 25 rotate around the central axis of the motor mounting shaft 23. The three second gears 25 maintain a meshing relationship with the gear ring 26. The three second gears 25 revolve around the central axis of the motor mounting shaft 23. When the first gear 22 rotates, the second gear 25 rotates in the same direction. This drives the first gear 22 to rotate, which in turn drives the drone propeller mounting shaft 21 to rotate at high speed, causing the drone propeller to rotate at high speed. During the rotation of the drone propeller, the airflow above it flows downward. The airflow flows over the fin surface of the heat dissipation fin plate 63, carrying away the heat from the fin surface. Heat is generated when the first gear 22, the second gear 25, and the gear ring 26 mesh. Therefore, before this, the cover plate 4 needs to be opened, and some lubricating oil needs to be applied to the inside of the housing 1 through the oiling port 3. The lubricating oil lubricates the tooth surface and can accelerate the heat conduction rate, transferring the heat to the gear ring 26. At this time, the heat transfer plate 61 is attached to the outer arc surface of the gear ring 26, and the heat is then conducted to the outer surface of the heat dissipation fin plate 63 by the heat transfer plate 61 for heat dissipation.

[0026] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A transmission assembly for an unmanned aerial vehicle (UAV), comprising a housing (1), characterized in that: It also includes transmission components (2) and heat dissipation components (6); Transmission components (2): include a drone propeller mounting shaft (21), a first gear (22), a motor mounting shaft (23), a planetary gear carrier (24), and a second gear (25). The drone propeller mounting shaft (21) is located in the middle of the upper side wall of the housing (1). The lower end of the drone propeller mounting shaft (21) is fixedly connected to the first gear (22). The lower side wall of the housing (1) is provided with a motor mounting shaft (23). The upper end of the motor mounting shaft (23) is fixedly connected to the planetary gear carrier (24). The upper and lower inner walls of the planetary gear carrier (24) are rotatably connected to evenly distributed second gears (25). The three second gears (25) mesh with one first gear (22). Heat dissipation component (6): It is located inside the casing (1).

2. The UAV transmission assembly according to claim 1, characterized in that: The transmission component (2) also includes a gear ring (26), which is fixedly connected to the lower side wall of the housing (1), and three second gears (25) mesh with one gear ring (26).

3. The UAV transmission assembly according to claim 1, characterized in that: The upper surface of the housing (1) is provided with evenly distributed oiling ports (3), and a cover plate (4) is fixedly connected to the upper surface of the housing (1) by screws.

4. The UAV transmission assembly according to claim 2, characterized in that: The outer arc surface of the housing (1) is provided with evenly distributed side clearance openings (5).

5. A UAV transmission assembly according to claim 4, characterized in that: The heat dissipation component (6) includes a heat transfer plate (61), connecting copper sheets (62) and heat dissipation fins (63). The connecting copper sheets (62) are fixedly connected to the interior of the four side clearance openings (5). The heat transfer plate (61) is fixedly connected to one end of the four connecting copper sheets (62) facing the center of the casing (1). The arc surface of the four heat transfer plates (61) is in contact with the outer arc surface of a toothed ring (26). The heat dissipation fins (63) are fixedly connected to one end of the four connecting copper sheets (62) away from the center of the casing (1).

6. The UAV transmission assembly according to claim 1, characterized in that: The lower surface of the housing (1) is fixedly connected with evenly distributed mounting feet (7), and the upper surface of the mounting feet (7) is provided with threaded holes.

7. The UAV transmission assembly according to claim 1, characterized in that: The outer arc surface of the UAV propeller mounting shaft (21) and the outer arc surface of the motor mounting shaft (23) are respectively fixedly connected with support bearings, and the outer ring surface of the outer arc surface of the two support bearings is fixedly connected to the inner wall of a housing (1).

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