Static load simulation test method of airplane wheel bearing

Abstract

The invention relates to a static load simulation test method of an airplane wheel bearing. A test machine comprises a dragging system and a loading system, wherein a tested bearing is enabled by the dragging system to rotate according to a stipulated rotation speed, the loading system is used for providing a test load to the tested bearing, the tested bearing is enabled to simulate the use working conditions such as the stress working condition and the test condition of the airplane wheel bearing in the flying, high-speed sliding, instantaneous impacting when in landing, laterodeviation landing and stopping processes of an airplane, the working condition of the airplane wheel bearing can be comprehensively reflected, the strength and service life of the airplane wheel bearing can be accurately evaluated, the loading force distribution, which is practically applied by the airplane load, on the airplane wheel bearing and the deviation stress working condition of the airplane wheel bearing when the airplane is stopped in a deviation manner can be simulated, and the fault can be efficiently and reliably stimulated. The credible test evidence can be provided for researching the airplane wheel bearing at a higher rotation speed and a heavier load, and the research period can be shortened.

Description

technical field [0001] The invention relates to a load testing machine for aircraft wheel bearings, in particular to a test method for simulating the load condition of the aircraft wheel bearings in a static state of the aircraft. Background technique [0002] With the development of aircraft, the speed and weight of the aircraft are gradually increasing during take-off and landing, and the safety problems during take-off and landing are becoming more and more prominent. The requirements for the performance and reliability of the wheel bearing are also getting higher and higher, which is related to the safety of the aircraft. Return flight, sustained combat capability and ability to adapt to airports. [0003] Wheel bearings are not only used to support the wheel, guide the direction of rotation of the wheel, reduce friction during rotation, and bear various loads between the wheel and the axle. Moreover, bearings have a great influence on the working performance, life, var...

AI Technical Summary

Problems solved by technology

On the one hand, this makes the ultimate function of the testing machine limited to the test bearing, and it is not feasible to develop a higher performance bearing

On the other hand, the additional pair of test bearings and the rotating main shaft are in the same tooling as the test bearings, which are heating elements when rotating, and the friction force causes the overall temperature to increase sharply, making the measurement of the loading load in the test , The measurement error of the bearing temperature increases, and greatly reduces the safety factor of the testing machine, which is easy to cause safety accidents due to the softening of the bearing

The feasibility of this existing test method is limited, and also reduces the credibility of its test data

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