Integrated power transmission coupling, aero-engine and aircraft

Abstract

The utility model provides an integrated type power transmission coupler, aero-engine and aircraft, the integrated type power transmission coupler comprises a sleeve and a connecting shaft which are coaxially connected, the inner wall of the sleeve is provided with a straight tooth inner gear ring, the outer wall of the connecting shaft is provided with a straight tooth outer gear ring, and the straight tooth inner gear ring and the straight tooth outer gear ring are mutually matched and meshed; the straight gear is meshed with the straight tooth outer gear ring, the axis of the straight gear and the axis of the connecting shaft are arranged in parallel, and the straight gear is used for being connected with an external transmission mechanism. The integrated power transmission coupler has the advantages of being compact in structure, high in transmission efficiency and capable of transmitting power in multiple directions, is applied to aero-engines and aircrafts, and meets the miniaturization design requirement.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, specifically to an integrated power transmission coupling, an aircraft engine, and an aircraft. Background Technology

[0002] In the field of mechanical transmission for aircraft, there are many areas where current drive and power transmission solutions need improvement.

[0003] In terms of drive methods, most existing mechanical transmission mechanisms rely on motor drivers for operation. This approach requires additional motor drivers, which not only complicates the overall transmission system structure and increases the difficulty of integrating and coordinating numerous components, but also significantly increases the system's size and weight. Given the trend towards miniaturization and lightweight aircraft, this drive method is clearly detrimental to compact aircraft design and performance improvement, falling short of the industry's demand for efficient and convenient transmission systems.

[0004] From the perspective of power transmission couplings, traditional couplings have a relatively simple function, typically only enabling power transmission between two axial ends. However, in the complex mechanical structure of aero engines, power transmission often needs to meet the requirements of multi-directional and multi-component coordinated operation. A single axial power transmission method cannot flexibly adapt to such complex power distribution needs, limiting the layout flexibility of the transmission mechanism within the engine and potentially affecting power transmission efficiency and stability. Utility Model Content

[0005] The purpose of this application is to provide an integrated power transmission coupling that has the advantages of compact structure, high transmission efficiency, and multi-directional power transmission.

[0006] This application provides an integrated power transmission coupling, including a sleeve and a connecting shaft coaxially connected. The inner wall of the sleeve is provided with a spur gear internal ring, and the outer wall of the connecting shaft is provided with a spur gear external ring. The spur gear internal ring and the spur gear external ring mesh with each other. It also includes a spur gear, which meshes with the spur gear external ring, and the axis of the spur gear is arranged parallel to the axis of the connecting shaft. The spur gear is used to connect an external transmission mechanism.

[0007] Compared with the prior art, the integrated power transmission coupling disclosed in this application has the following advantages: it directly transmits power through the spur gear meshing structure between the sleeve and the connecting shaft, eliminating complex intermediate transmission links and improving transmission efficiency. At the same time, it utilizes the parallel axis layout of spur gears to achieve multi-directional power output, significantly reducing the size of the mechanism while ensuring transmission efficiency, thus meeting the requirements for lightweight and miniaturized mechanisms. In other words, the spur gears provide multi-directional power output, eliminating the need for power supply from traditional motor drivers, and further improving the structural compactness.

[0008] In one possible implementation, the spur gear internal ring is integrally formed with the sleeve; the spur gear external ring is integrally formed with the connecting shaft. Compared with the prior art, the integral forming process eliminates the gaps caused by separate assembly, avoids tooth surface wear or fit deviations caused by multiple assembly, and improves transmission reliability.

[0009] In one possible implementation, the sleeve, connecting shaft, and spur gear are all made of high-strength alloy materials. Compared with the prior art, this improves the strength and durability of the integrated power transmission coupling and extends the service life of the components.

[0010] This application also provides an aircraft engine, including an integrated power transmission coupling; it also includes a coaxially arranged starter-generator motor, a main shaft, and a turbine, wherein the starter-generator motor drives the main shaft to rotate through the integrated power transmission coupling, and the turbine is mounted on the main shaft; the rotational output shaft of the starter-generator motor is connected to the sleeve, and the main shaft is connected to the connecting shaft.

[0011] This application also provides an aircraft, including an aircraft engine; and a multi-rotor system connected to a spur gear transmission. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the integrated power transmission coupling of this application;

[0013] Figure 2 This is a schematic diagram of the sleeve structure;

[0014] Figure 3 This is a schematic diagram of the connecting shaft.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Sleeve; 11. Spur gear internal ring; 2. Connecting shaft; 21. Spur gear external ring; 3. Spur gear. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figures 1 to 3 This application discloses an integrated power transmission coupling, including a sleeve 1 and a connecting shaft 2 coaxially connected. The inner wall of the sleeve 1 is provided with a spur gear internal gear ring 11, and the outer wall of the connecting shaft 2 is provided with a spur gear external gear ring 21. The spur gear internal gear ring 11 and the spur gear external gear ring 21 mesh with each other. It also includes a spur gear 3, which meshes with the spur gear external gear ring 21. The axis of the spur gear 3 is arranged parallel to the axis of the connecting shaft 2. The spur gear 3 is used to connect an external transmission mechanism.

[0022] Among them, sleeve 1 refers to a hollow cylindrical structure used to accommodate connecting shaft 2 and provide a mounting position for internal gear ring; connecting shaft 2 refers to a cylindrical rod-shaped component used to transmit rotational power, and its function is to directly cooperate with sleeve 1 to form a compact transmission structure; spur gear 3 refers to a cylindrical gear with its axis parallel to connecting shaft 2, used to connect external transmission mechanism, and its function is to save axial installation space through lateral meshing layout and adapt to the narrow internal environment.

[0023] As can be seen from the above, when the sleeve 1 rotates, the connecting shaft 2 rotates synchronously through the meshing of the spur internal gear ring 11 and the spur external gear ring 21; at the same time, the spur external gear ring 21 on the outer wall of the connecting shaft 2 meshes with the spur gear 3, driving the spur gear 3 to rotate, thereby realizing the power transmission to the external transmission mechanism; this design allows power to be transmitted simultaneously in the coaxial and parallel directions, improving the flexibility and integration of the transmission system.

[0024] In this embodiment, the spur gear internal gear ring 11 and the sleeve 1 are integrally formed; the spur gear external gear ring 21 and the connecting shaft 2 are integrally formed; the sleeve 1, the connecting shaft 2, and the spur gear 3 are all made of high-strength alloy material. The integral forming process reduces the number of parts and assembly steps, while avoiding displacement or stress concentration caused by centrifugal force during high-speed rotation of the split structure; the overall integrity of the spur gear meshing structure is enhanced, significantly improving transmission efficiency and lifespan; the integrated design also reduces production costs and improves production efficiency. The application of high-strength alloy material enables the coupling to withstand higher torque and load, expanding its application range; the material consistency of the three components avoids changes in the fit clearance due to differences in thermal expansion coefficients, ensuring the stability of the transmission mechanism under high-speed rotation and reducing vibration and noise.

[0025] In this embodiment, an aero-engine is provided, including an integrated power transmission coupling; it also includes a coaxially arranged starter-generator motor, a main shaft, and a turbine. The starter-generator motor drives the main shaft to rotate via the integrated power transmission coupling, and the turbine is mounted on the main shaft. The rotational output shaft of the starter-generator motor is connected to a sleeve 1, and the main shaft is connected to a connecting shaft 2. This achieves efficient power transmission between the starter-generator motor and the main shaft. Furthermore, this connection method simplifies the transmission structure, reduces the size of the transmission system, and is beneficial for the miniaturization design of the aero-engine. Simultaneously, the use of an integrated power transmission coupling improves transmission efficiency and reduces energy loss.

[0026] In this embodiment, an aircraft is provided, including an aircraft engine; it also includes a multi-rotor system, which is connected to a spur gear 3 via a transmission. This design avoids the need for a separate motor driver to drive the multi-rotor system, thereby further simplifying the aircraft structure and reducing its size.

[0027] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0028] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0029] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An integrated power transmission coupling, characterized in that, The device includes a sleeve and a connecting shaft connected coaxially. The inner wall of the sleeve is provided with a spur internal gear ring, and the outer wall of the connecting shaft is provided with a spur external gear ring. The spur internal gear ring and the spur external gear ring mesh with each other. The device also includes a spur gear that meshes with the spur external gear ring. The axis of the spur gear is arranged parallel to the axis of the connecting shaft. The spur gear is used to connect to an external transmission mechanism.

2. The integrated power transmission coupling according to claim 1, characterized in that, The spur gear internal gear ring and the sleeve are integrally formed; the spur gear external gear ring and the connecting shaft are integrally formed.

3. The integrated power transmission coupling according to claim 2, characterized in that, The sleeve, connecting shaft, and spur gear are all made of high-strength alloy materials.

4. An aircraft engine, characterized in that, The integrated power transmission coupling includes any one of claims 1-3.

5. The aero-engine according to claim 4, characterized in that, It also includes a coaxially arranged starter motor, main shaft and turbine. The starter motor drives the main shaft to rotate through the integrated power transmission coupling, and the turbine is mounted on the main shaft.

6. The aero-engine according to claim 5, characterized in that, The rotating output shaft of the integrated starter motor is connected to the sleeve, and the main rotating shaft is connected to the connecting shaft.

7. An aircraft, characterized in that, The aircraft engine included in any one of claims 4-6.

8. The aircraft according to claim 7, characterized in that, It also includes a multi-rotor system, which is connected to a spur gear transmission.

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