Vibration diagnosis method for abnormal roller torsional vibration fault of cold-rolling mill roller

Abstract

The invention discloses a vibration diagnosis method for abnormal roller torsional vibration fault of a cold-rolling mill roller. The method comprises the steps that a roller torsional vibration faultcharacteristic index set is constructed according to the correlation degree displayed by historical data; according to historical data, rolling mill roller parameters, working parameters and the like, a roller torsional vibration fault abnormal feature library is established; vibration data of upper and lower supporting rollers of a mill roller and rotating speed data of upper and lower working rollers of the mill roller are acquired in real time, and edge calculation processing is performed; according to sample data collected in real time, working condition learning is carried out, and feature library parameters are updated; a diagnosis task is generated according to the monitoring data and the rolling mill equipment, the monitoring data are subjected to real-time diagnosis processing, the diagnosis result is synchronously sent to an on-site rolling mill operator, and red-yellow early warning and sound alarm functions for abnormal fault information are provided; and diagnosis errorsare periodically checked, and a fault abnormal feature library and a diagnosis program are optimized. The vibration diagnosis method is low in cost, high in efficiency and accurate in diagnosis result, and does not need people to be attended.

Description

technical field [0001] The invention belongs to the technical field of industrial equipment fault monitoring, in particular to a vibration diagnosis method for abnormal torsional vibration faults of rolls of a cold rolling mill. Background technique [0002] The rolling mill is an important processing equipment in the iron and steel industry. It is used for forging and grinding various metal profiles. The rolling mill is divided into cold rolling mill and hot rolling mill. The stable performance and normal operation of the rolling mill are very important to ensure the rolling quality of the rolled piece. Therefore , the condition monitoring and troubleshooting work of the rolling mill is especially important. [0003] At present, some enterprises in the industry have implemented the rolling mill online monitoring system, which mainly monitors vibration and current signals. The monitoring parts include the motor end of the rolling mill system, the reduction box, the gear box,...

AI Technical Summary

Problems solved by technology

The problem of torsional vibration will bring serious consequences to the production of rolling mill equipment and rolled pieces. The peak torque caused by torsional vibration will generate high alternating stress in the shafting, shorten the fatigue life of shafting components, and increase equipment maintenance costs; the production process Accidents causing damage to the transmission parts in the process will cause economic losses to the steel mill; the torsional vibration of the rolling mill will cause current and speed oscillations, destroy the stability of the control system, and make the rolling mill equipment unable to work normally

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