Train traction motor bearing life testing machine

Abstract

The invention discloses a train traction motor bearing life testing machine. On the basis of conventionally using a temperature sensor to obtain real-time temperature data corresponding to a test bearing in use, a vibration sensor capable of acquiring real-time vibration data of the test bearing is added, so two different types of real-time data can be used to jointly characterize the fault characteristic data corresponding to the test bearing under different faults, and at the same time, the trend of fault characteristic data changes under different fault degrees in a whole fault period can be detected, more accurate fault characteristic data with higher discrimination can be obtained to be subsequent fault criterion of the existence of a same fault. At the same time, in order to simulatean actual use scenario more real, two ends of a transmission shaft are arranged with two tested bearings, and the testing efficiency and simulation truth under a special use scenario can be significantly improved.

Description

technical field [0001] The application relates to the field of bearing testing engineering equipment, in particular to a bearing life testing machine for train traction motors. Background technique [0002] Bearings are an important part of contemporary mechanical equipment to support the mechanical rotating body, reduce its friction coefficient during motion, and ensure its rotation accuracy. [0003] Usually, after the manufacture of mechanical parts is completed, a life test is required to check whether the actual service life meets the expected requirements. Usually, a special bearing life testing machine is used to apply various loads to the test bearing, so that it can withstand the simulated heavy load. In order to achieve the purpose of accelerating aging and quickly discovering possible faults, and further analyze the fault data characteristics corresponding to the faults that occur. [0004] Traditional bearing life testing machines usually only use temperature se...

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Problems solved by technology

[0004] Traditional bearing life testing machines usually only use temperature sensors to obtain real-time temperature data during the aging process, and use temperature changes (usually expressed as temperature rise) to characterize the occurrence of a certain fault. With the change of temperature, the sensitivity of the existing method to characterize the type or degree of fault based on temperature characteristics is low, and the degree of fault is usually very serious. At the same time, this method also relies heavily on long-term accumulated experience and cannot be quickly applied to A new type of test bearing, the actual use effect is poor

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