Universal shaft fault detection method and device

Abstract

The invention discloses a universal shaft fault detection method. The universal shaft fault detection method comprises steps that a vibration acceleration signal and / or an impact signal and / or a temperature signal of a universal shaft in the travel process of a train are obtained; characteristic extraction is performed according to the obtained vibration acceleration signal and / or the impact signal and / or the temperature signal to obtain a characteristic value of the corresponding signal; characteristic comparison is performed according to the characteristic value to determine whether the characteristic value exceeds a preset threshold; if the characteristic value exceeds the preset threshold, that the universal shaft has a fault is determined. The invention further discloses a universal shaft fault detection device. The universal shaft fault detection method is advantaged in that monitoring problems of the universal shaft can be effectively solved, and major safety accidents caused byfailure of the universal shaft are avoided.

Description

technical field [0001] The invention relates to the technical field of safety monitoring and monitoring, in particular to a cardan shaft fault detection method, and also to a cardan shaft fault detection device. Background technique [0002] As a force transmission component, the cardan shaft is widely used in the fields of high-speed EMUs (such as CRH5 cars), automobiles, mining machinery, metallurgical machinery and other fields of rail transit. The biggest feature of the cardan shaft is that its structure has a large angle compensation capacity, compact structure and high transmission efficiency. [0003] But at the same time, due to the particularity of the structure, its faults often occur frequently, usually manifested as cardan shaft unbalance faults, crosshead faults, etc. The fault diagnosis method for rotating machinery in the prior art is often: first, according to the structure and parameters of the transmission system, determine the rotation passing frequency o...

AI Technical Summary

Problems solved by technology

However, the needle roller bearing in the crosshead unit package of the cardan shaft does not completely rotate 360 ​​degrees in a full cycle, and the rotation speed changes all the time. Therefore, how to provide a kind of cardan shaft fault detection method that effectively solves the monitoring and monitoring problem of the cardan shaft to avoid major safety accidents caused by the fault is a technical problem that those skilled in the art need to solve urgently

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