Main shaft bearing impact test bench

Abstract

The invention provides a main shaft bearing impact test bench, which comprises a power system, a test bench main body, a loading system and a lubricating system, wherein the power system comprises a driving motor and a speed increasing box; the test bench main body comprises a bearing test cavity; the bearing test cavity comprises a test shaft, a test bearing, a radial loading mechanism and an axial loading mechanism; the driving motor, the speed increasing box and the test shaft are connected in sequence; the radial loading mechanism and the axial loading mechanism are connected with the loading system; the loading system comprises an axial loading servo oil cylinder and a radial loading servo oil cylinder; the axial loading servo oil cylinder and the radial loading servo oil cylinder areconnected with the same hydraulic station and are connected with the force sensor, the displacement sensor and the servo valve. Impact load loading and static load loading of the test bearing can berealized at the same time, alternating load borne by the main shaft bearing in actual working conditions can be simulated, the control precision of the load can be improved, and the test result is more real, accurate and effective.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to an aero-engine main shaft bearing test device. Background technique [0002] As an important supporting part of the aero-engine, the main shaft bearing of the aero-engine has a harsh working environment and needs to work for a long time under high-speed, high-temperature, high-pressure and alternating load conditions. The reliability of the bearing seriously affects the performance of the aero-engine. If the failure causes the aeroengine to not work normally, it may lead to a serious air accident. Therefore, in the manufacturing process, it is necessary to test the durability, fatigue life, and other indicators of the main shaft bearing, and analyze the problems existing in the product according to the test results. Targeted improvement; the main shaft bearing test bench in the prior art mainly tests the static load of the main shaft bearing, and does not carry out correspon...

AI Technical Summary

Problems solved by technology

[0002] As an important supporting part of the aero-engine, the main shaft bearing of the aero-engine has a harsh working environment and needs to work for a long time under high-speed, high-temperature, high-pressure and alternating load conditions. The reliability of the bearing seriously affects the performance of the aero-engine. If the failure causes the aeroengine to not work normally, it may lead to a serious air accident. Therefore, in the manufacturing process, it is necessary to test the durability, fatigue life, and other indicators of the main shaft bearing, and analyze the problems existing in the product according to the test results. Targeted improvement; the main shaft bearing test bench in the prior art mainly tests the static load of the main shaft bearing, and does not carry out corresponding test design for the impact load of the main shaft bearing

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