Antifriction bearing multi-functional fatigue life test bed

Abstract

The invention discloses an antifriction bearing multi-functional fatigue life test bed which comprises a drive part, a test part, a loading part, a control part and a data acquisition part, wherein the drive part comprises an electromotor, a polywedge belt wheel, a polywedge belt and a special polywedge belt wheel; the test part comprises a test main shaft, a supporting bearing, a supporting bearing pedestal, a test bearing, a test bearing box, a test bearing box bracket, a test bearing box bracket fixing truss, a bearing thrust ring and an oil seal ring; the loading part comprises a pull rod, an armature, an electromagnet array, an electromagnet array base, a nut and a plurality of weights; the control part comprises a computer, a current controller and a programmable power supply; and the data acquisition part comprises a vibration sensor, a temperature sensor, a pressure sensor and a vibration, temperature and pressure data acquisition system. The antifriction bearing multi-functional fatigue life test bed can be used for carrying out a fatigue life test on single or multiple antifriction bearings and can apply different loading methods to each antifriction bearing respectively.

Description

technical field [0001] The invention relates to a device for performing fatigue life test on rolling bearings, in particular to a device which can perform fatigue life testing on single or multiple sets of rolling bearings, and can apply constant stress, step stress, sequential stress, etc. to each set of rolling bearings respectively. A multifunctional fatigue life test device for different accelerated degradation modes such as sequential descending stress, pseudo-random stress and cyclic stress. Background technique [0002] Rolling bearings are important components in mechanical products and one of the key components in rotating machinery, with the functions of transmitting motion and bearing loads. However, rolling bearings are also one of the main sources of failure in mechanical products. Statistical data analysis shows that 30% of the failures of rotating machinery are related to bearing failure. The reliability and life of bearings directly affect the overall perform...

AI Technical Summary

Problems solved by technology

However, with the development of statistical theory, some loading methods such as sequential stress, pseudo-random stress, and cyclic stress have emerged, making the basic theory of rolling bearing fatigue life strengthening tests for these loading methods basically mature. Unfortunately, there is no public information yet. and products related to fatigue life test devices using these loading methods for rolling bearings

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