Aircraft engine and mouse cage type bearing structure thereof

Abstract

The invention provides a mouse cage type bearing structure. The mouse cage type bearing structure comprises a mouse cage body, a bearing and a regulating fixing part, wherein the inner part of the mouse cage body is provided with a bearing placing cavity and a regulating cavity; the bearing is arranged in the bearing placing cavity; the length, in the axial direction, of the bearing is smaller than that, in the axial direction, of the bearing placing cavity; the regulating fixing part can be axially and movably arranged in the regulating cavity; the regulating fixing part can regulate the position, in the bearing placing cavity, of the bearing, and fixes the bearing; the regulating fixing part regulates the position, in the bearing placing cavity, of the bearing, so that the axial positionof the bearing is adjustable, the distance from the bearing to the end part of the mouse cage body is changed, the problem that the bearing position is non-adjustable as the bearing and the mouse cage are integrated is effectively solved, and the rigidity of the mouse cage type bearing structure is conveniently changed. Meanwhile, the mouse cage body and the bearing are two parts, so that the cost can be reduced, and design and processing are convenient. The invention further provides the aircraft engine.

Description

technical field [0001] The invention relates to the field of aero-engine equipment, in particular to an aero-engine and a squirrel-cage bearing structure thereof. Background technique [0002] Bearing is an important component in contemporary mechanical equipment, which plays a role in supporting the movement of rotating bodies in machinery. Due to the harsh working environment, high rotation speed and severe vibration of the aviation bearing, higher requirements are put forward for the design, manufacture and installation of the bearing. The squirrel cage elastic support is a commonly used damping part in aero-engines. Its purpose is to adjust the critical speed of the rotor, reduce the vibration of the main shaft, and avoid damage to the main shaft due to the maximum amplitude generated when the main shaft passes through its critical speed. At the same time, the exciting force generated by the main shaft can be attenuated by the squirrel cage so that it is not directly tr...

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Problems solved by technology

[0003] Based on this, it is necessary to provide a squirrel-cage bearing structure that can adjust the bearing position, reduce design difficulties, and save costs for the current problem that the bearing position cannot be adjusted due to the integration of the bearing and the squirrel-cage. The aeroengine of the above-mentioned squirrel-cage bearing structure

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