Device and method for rolling bearing detection and fault diagnosis

Abstract

The invention relates to a device for rolling bearing detection and fault diagnosis. The device comprises a bearing fixing module, a power driving module, a hydraulic servo module, a signal collecting module and a computer. By the aid of the device, under the condition of applied static load, a load-deformation curve of the bearing with different roll angles can be measured through fixed points. The invention further relates to a method for rolling bearing detection and fault diagnosis. Bearing shifting signals, pressure signals and shifting signals of the hydraulic servo module and angle shifting signals of a rotary angle are collected, and are combined by a bearing load-deformation static mechanics simulating system to perform three-dimensional load-deformation simulating calculation of bearing inner rolling channels, bearing outer rolling channels and rollers at different positions, a measured curve is compared with a simulation curve, and bearing defect detection and quantitative diagnosis and processing are realized. Since a static method is adopted to diagnose, influences by large amount of environmental interference factors are avoided, and accuracy of bearing defect detection is improved. By the aid of the device and the method, bearing defect detection and fault quantitative diagnosis can be realized well.

Description

technical field [0001] The invention relates to the field of bearing detection, in particular to a rolling bearing detection and fault diagnosis device and method. Background technique [0002] Rolling bearings are important parts of mechanical equipment and are widely used in the machinery industry. However, rolling bearings are also one of the most vulnerable parts. According to statistics, 30% of rotating machinery faults are caused by rolling bearings. Rolling bearing fault monitoring and diagnosis have always been the focus of the development of mechanical fault diagnosis technology at home and abroad. The most primitive method of rolling bearing fault detection is the method of listening stick (or screwdriver). In the 1960s, the shock pulse meter appeared, and after the 1970s, bearing monitors and bearing detectors were successively developed. In addition to monitoring bearings with vibration signals, other techniques have been developed. For example, oil pollution ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the bearing static test, the present invention provides a device and method for rolling bearing detection and fault diagnosis, as long as a certain radial force is applied to the rolling bearing, and the static load is applied according to the requirements Slowly rotate the bearing, and measure the load-deformation curve of the bearing under static load conditions at fixed points, so that the detection and fault diagnosis of bearing defects can be realized; the detection of bearing faults is carried out in a static environment, and accurate diagnosis of various subtle defects can be realized. It has very important practical significance for bearing quality inspection and bearing quality control

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