Aero-engine central transmission structure adopting face gear for power division

A technology of aero-engine and transmission structure, applied in the direction of machine/engine, gas turbine device, transmission device parts, etc., to achieve the effect of reducing design difficulty, reducing repair cost, and shortening troubleshooting cycle

Active Publication Date: 2021-08-24
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a central transmission structure of an aero-engine using face gears for power splitting, so as to solve or alleviate at least one of the problems in the background technology

Method used

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  • Aero-engine central transmission structure adopting face gear for power division
  • Aero-engine central transmission structure adopting face gear for power division
  • Aero-engine central transmission structure adopting face gear for power division

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.

[0036] In order to overcome the following shortcoming that the central drive of existing aero-engine has:

[0037] 1) The central transmission has only one output interface, and the output speed of the driven bevel gear needs to take into account the speed-up and speed-down transmission chains in the accessory gearbox. The design of the transmission chain is difficult. When the speed difference between the speed of the accessories and the speed of the input shaft is large Limited by the transmission ratio of the single-stage transmission (the transmission ratio of the cylindrical gear is generally not more than 2), the fall wheel is required for transition, and the added fall wheel increases the number of sta...

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Abstract

The invention provides an aero-engine central transmission structure adopting a face gear for power division. The aero-engine central transmission structure comprises a central transmission assembly, a first accessory gearbox assembly and a second accessory gearbox assembly, the central transmission assembly comprises a high-pressure compressor rotor, a face gear shaft mounted on the high-pressure compressor rotor through a locking structure, and a face gear shaft supporting bearing for supporting the face gear shaft. The face gear shaft supporting bearing is mounted on a central transmission shell. The first accessory gearbox assembly and the second accessory gearbox assembly each comprise an accessory gearbox, a central transmission rod connected with the accessory gearbox, a driven straight spur gear shaft connected with the central transmission rod through a locking structure, a first gear shaft supporting bearing and a second gear shaft supporting bearing, wherein the first gear shaft supporting bearing and the second gear shaft supporting bearing are used for supporting the driven straight spur gear shaft. The face gear shaft is separately meshed with the first driven straight spur gear shaft and the second driven straight spur gear shaft.

Description

technical field [0001] The application belongs to the technical field of aero-engines, and in particular relates to a central transmission structure of an aero-engine using face gears for power splitting. Background technique [0002] The central transmission is an important component of an aero-engine, and its main function is to transmit power and torque between the high-pressure rotor of the aero-engine and the accessory gearbox. In the starting state of the aeroengine, the torque is transmitted to the high-pressure rotor through the central transmission assembly to complete the starting of the engine; Each attachment provides power. The central transmission is located in the bearing cavity of the aero-engine. Its structural form and size are limited by the structure of the bearing cavity. The working time is the same as that of the engine. The performance of the central transmission directly affects the service performance and life of the engine. [0003] In the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/023F16H57/021F02C7/36
CPCF16H57/023F16H57/021F02C7/36
Inventor 滕文爽郭梅谷俊邢彬
Owner AECC SHENYANG ENGINE RES INST
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