Method for on-line monitoring running state of hot rolling edging mill

Abstract

The invention discloses a method for on-line monitoring the running state of a hot rolling edging mill which is driven by a motor comprising a sliding bearing and a rolling bearing and a speed reducer. The method comprises the steps of arranging a vibration sensor on a bearing seat, collecting an original signal is, carrying out frequency spectrum analysis on the original signal, extracting the vibration amplitude values of the motor, the sliding bearing, the speed reducer gear and the rolling bearing through signal reconstruction; carrying out data preprocessing, performing normalization processing on the vibration amplitude data, and setting a standard sample and a sample to be detected according to the vibration amplitude of the rolling mill, and calculating the health degree of the sample to be detected; setting the operation state health index H of the rolling mill to be calculated by a standard sample and the sample to be detected, the standard sample being 1, the to-be-detectedsample being normalization processed vibration amplitude values; setting an alarm threshold value of H, and an on-line monitoring system respectively forecasting normal, light faults or heavy faults of the rolling mill according to the alarm threshold value. According to the method, the health degree index is used for evaluating the degradation trend of the running state of the rolling mill, and the normal and reliable operation of the equipment is supported.

Description

technical field [0001] The invention relates to the technical field of monitoring and diagnosis of metallurgical machinery and equipment, in particular to an online monitoring method for the running state of a hot rolling vertical roll mill. Background technique [0002] The hot-rolling vertical roll mill is the key equipment of the hot-rolling production line. The drive of a typical hot-rolling vertical roll mill is mainly composed of a motor and a reducer. The motor uses a sliding bearing, and the reducer is installed with a rolling bearing. Due to manufacturing errors, improper assembly or improper use, etc., the operating status of the hot rolling mill will change. In many cases, the faults of motors, sliding bearings, reducer gears and sliding bearings are the main causes of abnormal operation of the equipment. Therefore, it is of great significance to carry out on-line monitoring of the health status of the running status of the hot rolling vertical roll mill. [0003...

AI Technical Summary

Problems solved by technology

As a result, the timeliness of the diagnostic information obtained by offline diagnosis cannot be guaranteed, resulting in information lag, and the real-time operation status of the hot-rolling vertical roll mill cannot be monitored accurately in time, affecting the normal and reliable operation of the equipment, and there are certain potential safety hazards

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