Main shaft bearing impact test bench
A technology of impact test and spindle bearing, which is applied in the field of aero-engines, can solve the problems of aero-engines not working normally, affecting the performance of aero-engines, harsh working environment, etc., and achieve the effects of prolonging the life of the test bench, authentic test results, and convenient safety protection
Active Publication Date: 2020-07-17
湖南汉能科技有限公司
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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
Method used
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Embodiment 2
[0032] The difference between embodiment 2 and embodiment 1 is that the test bearings are arranged and loaded in different ways; in this embodiment, the radially loaded test bearing is arranged in the middle of the test shaft, and the axially loaded test bearing is arranged at the second fulcrum; switching between the above The two arrangement loading methods of the test bearing 3 can meet the requirements of the test function without changing the outer structure design of the casing, only need to make a different design for the bearing seat of the casing and equip the corresponding bearing bushing.
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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...
Claims
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IPC IPC(8): G01M13/04G01M7/08G01N3/02G01N3/12G01N3/307
CPCG01M7/08G01M13/04G01N3/02G01N3/12G01N3/307
Inventor 廖利华郭斌
Owner 湖南汉能科技有限公司
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