Inner ring integrated structure of main bearing of aircraft engine

Abstract

The invention discloses an inner ring integrated structure of a main bearing of an aircraft engine. The inner ring integrated structure is mainly composed of an outer ring, a cage, an inner ring and a bearing. The inner ring is covered with the cage, a radial hole and an annular groove are formed between the inner ring and the cage, and the upper portion of the cage is covered with the outer ring. The bearing is arranged in an inner cavity formed by the outer ring, the cage and the inner ring, a plurality of oil injection holes are formed in the inner ring in a penetrating mode, and the oil injection holes are formed relative to the bottom of the cage and communicate with the radial hole. Lubricating oil flows upward into the radial hole through the oil injector holes, then flows to the bearing and annular groove, and part of the lubricating oil is stored in the annular groove to play a continuous lubrication role. According to the integrated structure, the problem of poor lubrication cooling effect is solved, the safe and reliable use of the aircraft engine is guaranteed, design simplification, manufacturing cost lowering, lubrication cooling structure optimization and weight lighting are facilitated, and the working reliability of the bearing can be improved through the structure.

Description

technical field [0001] The invention belongs to the technical field of aero-engine mechanical system design, is mainly applied to aero-engine main bearings, and is beneficial to simplifying design, reducing manufacturing costs, optimizing lubricating structure, and further improving the working reliability of the main bearing, in particular to an aero-engine main bearing Inner ring integrated structure. Background technique [0002] The main bearing mainly plays the role of supporting and guiding in the aero-engine, and can be used to determine the relative movement position of the shaft parts and other parts, and its performance directly affects the performance of the aero-engine transmission system. Rolling bearing is an important part of aero-engine mechanical transmission system, mainly composed of four parts: inner ring, outer ring, rolling body and cage. [0003] Taking the existing five-pivot bearing assembly and lubrication structure of an engine as an example, the ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated structure of the inner ring of the main bearing of the aero-engine, the inner ring and the left and right oil collectors are fused into one, and the position of the oil hole on the inner ring is redesigned to solve the poor lubrication and cooling effect of the main bearing of the aero-engine The problem

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