Large-torque gear assembly for power transmission of unmanned aerial vehicle

Abstract

The utility model discloses a large-torque gear assembly for power transmission of an unmanned aerial vehicle, which comprises a power transmission gear assembly connected with the output end of an engine of the unmanned aerial vehicle, the power transmission gear assembly comprises a main shaft, an auxiliary bevel gear, a large gear and a main bevel gear, and bearings are respectively arranged at the upper end and the lower end of the main shaft. The main shaft is sleeved with the large gear and the main bevel gear, the large gear and the main bevel gear are in spline fit with the main shaft, and an annular connecting plate is arranged between the main bevel gear and the large gear; according to the device, the annular connecting plate is arranged, circumferential positioning of the main bevel gear and the large gear is formed through the clamping effect, spline connection is matched, the annular connecting plate serves as a transition load transmission piece, the load transmission capacity between the main bevel gear and the main shaft and between the large gear and the main shaft is improved, direct bearing of the interference fit face of the main shaft and the main bevel gear or the large gear is avoided, and the service life of the main shaft is prolonged. And large-torque load transmission is ensured, so that the high-precision requirement and the high-stability requirement under high operation load are met.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) component technology, and in particular to a high-torque gear assembly for power transmission in UAVs. Background Technology

[0002] Rotary-wing drones are characterized by their small size, simple structure, and flexible control. They can take off and land vertically, hover freely, and adapt to various natural environments, possessing autonomous flight and landing capabilities. They can operate in complex and dangerous environments unsuitable for human access. With the development of science and technology, the application of rotary-wing drones in daily life and production is becoming increasingly widespread. Existing rotary-wing drones are typically used for tasks such as aerial photography or inspection. Rotary-wing drones have good maneuverability and flexible flight paths. They can overcome obstacles and hover at predetermined locations to perform tasks.

[0003] Currently, the power transmission in common multi-rotor UAVs in existing technologies requires gear transmission. One main bevel gear may drive multiple secondary bevel gears at the same time, and the rotation of the main bevel gear is also driven by another gear set on the same axis. This leads to the need for high torque in the power transmission process to meet the high precision and high stability requirements under high operating loads. To this end, we have designed a high torque gear assembly for UAV power transmission. Utility Model Content

[0004] The purpose of this invention is to provide a high-torque gear assembly for power transmission in unmanned aerial vehicles (UAVs) to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-torque gear assembly for power transmission in unmanned aerial vehicles (UAVs) includes a power transmission gear assembly connected to the output end of the UAV's engine. The power transmission gear assembly includes a main shaft, a secondary bevel gear, a large gear, and a main bevel gear. Multiple secondary bevel gears are provided and mesh with one side of the main bevel gear. Bearings are provided at the upper and lower ends of the main shaft. The large gear and the main bevel gear are both sleeved on the outside of the main shaft and are splined with the main shaft. An annular connecting plate is provided between the main bevel gear and the large gear.

[0007] As a preferred embodiment of this utility model: the outer surface of the main shaft is provided with an external spline, the annular connecting plate divides the external spline into an upper spline part and a lower spline part, the main bevel gear is engaged with the top surface of the annular connecting plate, the inner side of the main bevel gear is provided with a second internal spline that cooperates with the upper spline part, the large gear is engaged with the bottom surface of the annular connecting plate, and the inner side of the large gear is provided with a first internal spline that cooperates with the lower spline part.

[0008] As a further preferred embodiment of this utility model: the top surface of the annular connecting plate is provided with a plurality of first limiting posts, the bottom surface of the annular connecting plate is provided with a plurality of second limiting posts, the bottom of the main bevel gear is provided with a first limiting hole for the first limiting posts to be inserted, and the top of the large gear is provided with a second limiting hole for the second limiting posts to be inserted.

[0009] As a further preferred embodiment of this utility model: the inner side of the annular connecting plate is provided with a plurality of internal teeth, the plurality of internal teeth being equally spaced along the inner circumferential direction of the annular connecting plate, and the plurality of internal teeth cooperating with the external spline.

[0010] As a further preferred embodiment of this utility model: the annular connecting plate is sleeved on the outer middle position of the external spline.

[0011] As a further preferred embodiment of this utility model: the plurality of first limiting pins and the plurality of second limiting pins are all equally spaced along the circumferential direction of the surface of the annular connecting plate.

[0012] As a further preferred embodiment of this utility model: the main bevel gear is located above the large gear.

[0013] The beneficial effects of this utility model are as follows: Through the structural design of this device, the large gear, the main bevel gear, and the annular connecting plate are all splined with the main shaft. Furthermore, the top of the annular connecting plate is connected by multiple first limiting pins embedded in the corresponding first limiting holes, and the bottom of the annular connecting plate is also connected by multiple second limiting pins embedded in the corresponding second limiting holes. This forms a circumferential positioning of the main bevel gear and the large gear, which are connected by splines. The annular connecting plate is used as a transitional load-bearing component, which improves the load transmission capacity between the main bevel gear and the large gear and the main shaft. It avoids direct bearing between the main shaft and the interference fit surface of the main bevel gear or the large gear, ensuring high torque transmission to meet the high precision and high stability requirements under high operating loads. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is a perspective view of a partial structure of the present invention;

[0017] Figure 3 This is an exploded view of a partial structure of the present invention;

[0018] Figure 4This is an exploded view of a partial structure of the present invention;

[0019] Figure 5 This is an exploded view of a partial structure of the present invention;

[0020] Figure 6 This is an exploded view of a partial structure of the present invention.

[0021] The components are: 1. Main shaft; 2. Secondary bevel gear; 3. Large gear; 4. Main bevel gear; 5. External spline; 6. Annular connecting plate; 7. First internal spline; 8. Second internal spline; 9. First limiting socket; 10. Second limiting socket; 11. First limiting post; 12. Second limiting post; 13. Internal gear. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-6In this embodiment of the present invention, a high-torque gear assembly for power transmission of a drone includes a power transmission gear assembly connected to the engine output end of the drone. The power transmission gear assembly includes a main shaft 1, a secondary bevel gear 2, a large gear 3, and a main bevel gear 4. The secondary bevel gear 2 is provided in multiples and meshes with one side of the main bevel gear 4. Bearings are provided at the upper and lower ends of the main shaft 1 respectively. The large gear 3 and the main bevel gear 4 are both sleeved on the outside of the main shaft 1. The large gear 3 and the main bevel gear 4 are splined with the main shaft 1. The main bevel gear 4 is located above the large gear 3. An annular connecting plate 6 is provided between the main bevel gear 4 and the large gear 3.

[0026] The outer surface of the spindle 1 is provided with an external spline 5. An annular connecting plate 6 is sleeved on the outer middle position of the external spline 5. The annular connecting plate 6 divides the external spline 5 into an upper spline part and a lower spline part. The main bevel gear 4 is engaged with the top surface of the annular connecting plate 6. The inner side of the main bevel gear 4 is provided with a second internal spline 8 that mates with the upper spline part. The large gear 3 is engaged with the bottom surface of the annular connecting plate 6. The inner side of the large gear 3 is provided with a first internal spline 7 that mates with the lower spline part.

[0027] The top surface of the annular connecting plate 6 is provided with a plurality of first limiting posts 11, and the bottom surface of the annular connecting plate 6 is provided with a plurality of second limiting posts 12. The plurality of first limiting posts 11 and the plurality of second limiting posts 12 are evenly distributed along the circumferential direction of the surface of the annular connecting plate 6. The bottom of the main bevel gear 4 is provided with a first limiting insertion hole 9 for the first limiting posts 11 to be inserted, and the top of the large gear 3 is provided with a second limiting insertion hole 10 for the second limiting posts 12 to be inserted.

[0028] The inner side of the annular connecting plate 6 is provided with multiple internal teeth 13, which are evenly distributed along the inner circumference of the annular connecting plate 6, and the multiple internal teeth 13 cooperate with the external spline 5.

[0029] Through the structural design of this device, the large gear 3, the main bevel gear 4, and the annular connecting plate 6 are all splinedly fitted to the main shaft 1. Furthermore, the top of the annular connecting plate 6 is engaged by multiple first limiting pins 11 embedded in the corresponding first limiting holes 9, and the bottom of the annular connecting plate 6 is engaged by multiple second limiting pins 12 embedded in the corresponding second limiting holes 10. This forms a circumferential positioning of the main bevel gear 4 and the large gear 3, which are then splinedly connected. The annular connecting plate 6 serves as a transitional load-bearing component, improving the load transmission capacity between the main bevel gear 4 and the large gear 3 and the main shaft 1. This avoids direct bearing between the main shaft 1 and the interference fit surfaces of the main bevel gear 4 or the large gear 3, ensuring high torque transmission to meet the high precision and high stability requirements under high operating loads.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-torque gear assembly for power transmission in unmanned aerial vehicles (UAVs), comprising a power transmission gear assembly connected to the engine output of the UAV; characterized in that: The power transmission gear assembly includes a main shaft (1), a secondary bevel gear (2), a large gear (3), and a main bevel gear (4). The secondary bevel gear (2) has multiple components and meshes with one side of the main bevel gear (4). The upper and lower ends of the main shaft (1) are respectively provided with bearings. The large gear (3) and the main bevel gear (4) are both sleeved on the outside of the main shaft (1). The large gear (3) and the main bevel gear (4) are both splined with the main shaft (1). An annular connecting plate (6) is provided between the main bevel gear (4) and the large gear (3). The top surface of the annular connecting plate (6) is provided with multiple first limiting pins (11), and the bottom surface of the annular connecting plate (6) is provided with multiple second limiting pins (12). The bottom of the main bevel gear (4) is provided with a first limiting hole (9) for the first limiting pins (11) to be inserted, and the top of the large gear (3) is provided with a second limiting hole (10) for the second limiting pins (12) to be inserted.

2. The high-torque gear assembly for power transmission in unmanned aerial vehicles according to claim 1, characterized in that: The outer surface of the main shaft (1) is provided with an external spline (5). The annular connecting plate (6) divides the external spline (5) into an upper spline part and a lower spline part. The main bevel gear (4) is engaged with the top surface of the annular connecting plate (6). The inner side of the main bevel gear (4) is provided with a second internal spline (8) that cooperates with the upper spline part. The large gear (3) is engaged with the bottom surface of the annular connecting plate (6). The inner side of the large gear (3) is provided with a first internal spline (7) that cooperates with the lower spline part.

3. The high-torque gear assembly for power transmission in unmanned aerial vehicles according to claim 1, characterized in that: The inner side of the annular connecting plate (6) is provided with a plurality of internal teeth (13), which are evenly distributed along the inner circumference of the annular connecting plate (6) and cooperate with the external spline (5).

4. A high-torque gear assembly for power transmission in unmanned aerial vehicles according to claim 3, characterized in that: The annular connecting plate (6) is sleeved on the outer middle position of the external spline (5).

5. A high-torque gear assembly for power transmission in unmanned aerial vehicles according to claim 1, characterized in that: Multiple first limiting pins (11) and multiple second limiting pins (12) are evenly distributed along the circumferential direction of the surface of the annular connecting plate (6).

6. A high-torque gear assembly for power transmission in a drone according to claim 5, characterized in that: The main bevel gear (4) is located above the large gear (3).

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