Aero-engine bearing lining component

Abstract

The invention relates to the technical field of engine cases, and particularly provides an aero-engine bearing lining component which comprises a gearbox shell, a bearing lining, a bearing, a pressingplate and a wave spring. The axial force (larger than axial dividing force of bearing pressure applied to the bearing lining) generated by the wave spring pushes the bearing lining to axially move along a bearing lining hole with an inclined angle, so that a radial clearance generated between an accessory gearbox shell and the bearing lining is automatically compensated, the bearing lining and the accessory gearbox shell are provided with an anti-rotating boss and an anti-rotating groove which are matched, and relative rotation between the bearing lining and the accessory gearbox shell can beprevented.

Description

technical field [0001] The invention relates to the technical field of engine cases, in particular to an aeroengine bearing bush assembly. Background technique [0002] The aero-engine accessory casing is the driving device of the engine accessory. The accessory casing transmits the power extracted from the high-pressure rotor of the engine by the central drive to the aircraft and engine accessories through a series of spur gear transmissions, and provides corresponding speed and steering for the aircraft and engine accessories. and power. [0003] Existing bearing bush assemblies have the following drawbacks: [0004] 1. During the working process, as the temperature of the accessory casing rises, the radial gap between the accessory casing shell and the bearing bush will cause the gear meshing accuracy to decrease, the vibration to increase, and the gear to be scratched; [0005] 2. During the working process, as the temperature of the accessory casing rises, the radial ...

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Problems solved by technology

[0004] 1. During the working process, as the temperature of the accessory casing rises, the radial gap between the accessory casing shell and the bearing bush will cause the gear meshing accuracy to decrease, the vibration to increase, and the gear to be scratched;

[0005] 2. During the working process, as the temperature of the accessory casing rises, the radial gap between the accessory casing shell and the bearing bush will be generated. Under the action of the circumferential drag force of the bearing bush, the bearing bush and the accessory casing shell will The relative rotation of the body causes the casing shell to wear out;

[0006] 3. Due to the occurrence of the above two problems, the accessory casing cannot be used normally and returned to the factory for overhaul in advance, and the accessory casing will increase the number of overhauls and increase the cost of use

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