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Transmission mechanism, turbofan engine and assembly method

A technology of turbofan and transmission mechanism, which is applied to machines/engines, transmission devices, gear transmission devices, etc., can solve the problems of complex structure of planetary gear sets, complex structure of transmission system, and difficult assembly, and achieve compact structure and supporting structure. The effect of simple, simplified cooling structure

Pending Publication Date: 2022-07-29
AECC COMML AIRCRAFT ENGINE CO LTD
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Problems solved by technology

[0003] However, the prior art GTF engine, due to the complex structure of the planetary gear set, and the working conditions are generally high-speed and heavy-load conditions, it is necessary to set a reliable bearing structure, as well as corresponding lubrication, cooling and control technology
Therefore, the structure of the transmission system of the GTF engine is complicated, which further leads to the disadvantages of difficult assembly and inconvenient maintenance.

Method used

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  • Transmission mechanism, turbofan engine and assembly method
  • Transmission mechanism, turbofan engine and assembly method
  • Transmission mechanism, turbofan engine and assembly method

Examples

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Embodiment Construction

[0028] The following discloses a variety of different implementations or examples for implementing the described subject technical solutions. In order to simplify the disclosure, specific examples of various elements and arrangements are described below, which are, of course, only examples and are not intended to limit the scope of protection of the present invention.

[0029] In addition, it is to be understood that references such as "one embodiment", "an embodiment", and / or "some embodiments", "one or more embodiments" are intended to refer to any one of at least one embodiment of the present application. feature, structure or characteristic. Thus, it should be emphasized and noted that two or more references to "an embodiment" or "one embodiment" or "some embodiments" or "one or more embodiments" in not necessarily refer to the same embodiment. Furthermore, certain features, structures or characteristics of the one or more embodiments of the present application may be co...

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Abstract

The invention relates to a transmission mechanism, a turbofan engine and an assembly method. The transmission mechanism comprises a fan disc, and the axial downstream end face of the fan disc is provided with a first end face gear. The planetary gear assembly is located on the downstream portion of the fan disc and comprises an inner gear ring, a planetary gear and a sun gear, and the axial upstream end face of the inner gear ring is provided with a second end face gear; and the first end face gear is meshed with the second end face gear, so that the fan disc is coupled with the planetary gear assembly.

Description

technical field [0001] The invention relates to the field of turbofan engines, in particular to a transmission mechanism, a turbofan engine and an assembling method. Background technique [0002] Geared Turbofan (GTF) engine is an improvement on the traditional turbofan engine. In traditional turbofan engines, in order to ensure that the tangential speed of the blade tip of the fan does not exceed a certain value (if it exceeds, it will produce excessive noise and shock wave resistance) and limit the speed of the fan, resulting in a coaxial booster stage (low pressure) with the fan. compressor), the low-pressure turbine rotates slowly, and more stages are required to generate sufficient power. The GTF engine introduces a planetary gear assembly between the supercharging stage and the fan, so that the fan, supercharging stage and low-pressure turbine can work at a relatively ideal speed at the same time, thereby reducing the number of supercharging stages and turbine stages,...

Claims

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Application Information

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IPC IPC(8): F02C3/04F02C7/36F16H1/32
CPCF02C3/04F02C7/36F16H1/32
Inventor 梁霄宋健王金锋
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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