Intelligent and quick fault diagnosis instrument for bearing and diagnosis method thereof

Abstract

The invention relates to an intelligent and quick fault diagnosis instrument for a bearing and a diagnosis method thereof. The fault diagnosis instrument comprises a data acquisition device and a data processing device which are connected with each other. The data acquisition device comprises a vibration sensor. The data acquisition device acquires a vibration analog signal of a processed bearing based on the vibration sensor. The data processing device acquires the vibration analog signal through a plurality of preset frequencies and obtains a plurality of sets of vibration time domain signals, and then the data processing device performs a series of processing analysis on each vibration time domain signal for finally determining a fault part. The intelligent and quick fault diagnosis instrument and the diagnosis method thereof can generate a clear fault description which comprises a bearing fault development period, a bearing damage part and bearing damage degree. The intelligent and quick fault diagnosis instrument and the diagnosis method further have advantages of high intelligence degree, and low dependence for a professional skill and experience of an operator.

Description

technical field [0001] The invention relates to vibration analysis and fault diagnosis technology of mechanical equipment, in particular to an intelligent quick fault diagnosis instrument and a diagnosis method for bearings, which are applicable to the fields of machinery manufacturing, metallurgy, chemical industry, electric power, cement, printing and the like. Background technique [0002] Bearings are important basic components of various mechanical equipment. The accuracy, performance, life and reliability of bearings play a decisive role in the accuracy, performance, life and reliability of the main engine. Studies have shown that 30% of mechanical equipment failures are caused by bearing failures, so bearing condition monitoring and fault diagnosis are very important. Predictive maintenance of bearings can effectively reduce machine downtime and reduce maintenance costs. During equipment operation, use basic state monitoring methods (such as temperature, vibration and...

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Problems solved by technology

[0003] In order to solve the problems that the existing bearing fault diagnosis instrument has a low degree of intelligence, and the determination of the working state of the bearing, the development trend of the fault, and the cause of the fault need to rely on the special technical level and work experience of the operator, the present invention provides a quick and easy method based on vibration detection Bearing intelligent fast fault diagnosis instrument for evaluating bearing status. The diagnostic instrument can obtain bearing speed and directly evaluate bearing operating status based on monitoring data. At the same time, it can also give a clear fault description, including the development stage of bearing fault and bearing damage. The degree of damage to parts and bearings, high degree of intelligence, and little dependence on the special skills and experience of operators

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