On-line monitoring and early-warning method for operating state of gearbox

Abstract

The invention relates to an on-line monitoring and early-warning method for the operating state of gearbox equipment. A device with the method comprises a gearbox, rolling bearings and vibration sensors which are arranged on bearing seats and used for monitoring vibration signals of the rolling bear. The method includes: collecting signals of the vibration sensors and reconstructing the signals; carrying out spectral analysis on the total vibration value, the rotation frequency and the multiplication frequency, the mesh frequency and the multiplication frequency and the corresponding vibration amplitude which are all detected by a corresponding sensor on a gear shaft set; and calculating fault factors of parts of the rolling bearings, stripping coefficients of surfaces of gears and fault factors of broken teeth on the surfaces of the gears to be compared with preset warning values respectively, if the preset values are exceeded, the gearbox operates in an abnormal state, if the preset values are not exceeded, the gearbox operates in a normal state, and the results are displayed for reference by a maintainer. The on-line monitoring and early-warning method is developed to judge and locate the gear faults with multi-parameter characteristics to ensure the normal operation of the gearbox equipment.

Description

technical field [0001] The invention relates to a gear box, in particular to a method for monitoring the running state of the gear box. Background technique [0002] Due to design, manufacturing errors, improper assembly or improper use of gears, the operating state of the gears will change over time during the operation of the gears. In many cases, gear failures are the main cause of equipment failures. Therefore, the online monitoring and diagnosis of the gear box equipment running status is of great significance. [0003] At present, offline diagnosis and online diagnosis are mainly used to grasp the state of gears. Offline diagnosis generally completes information collection on site, and data processing, analysis and diagnosis can be carried out in offices or laboratories. For the responsible party of the equipment, the offline diagnosis cannot guarantee the timeliness of the information obtained, and the above method cannot monitor the operation status of the gearbox i...

AI Technical Summary

Problems solved by technology

For the responsible party of the equipment, the offline diagnosis cannot guarantee the timeliness of the information obtained, and the above method cannot monitor the operation status of the gearbox in a timely and accurate manner.

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