Vibration-state on-line monitoring method of high-speed wire rod finishing block

Abstract

The invention discloses a vibration-state on-line monitoring method of a high-speed wire rod finishing block. According to the method, a vibration sensor is used for obtaining vibration signals of a motor of the finishing block and bearings of a gearbox and a roller box, spectral analysis is carried out on the vibration signals. and feature signals of the finishing block are extracted, the degradation trend of the operating state of the finishing block is monitored through classification indicators, non-planned shut-down of the finishing block caused by faults of the motor of the finishing block, the bearing of the gearbox and all bearing parts of the roller box of a machine frame, poor centering of a shaft system, surface faults of gears, abnormal meshing states of gear surfaces, looseness of the bearings and the like are avoided, and normal operation of the high-speed wire rod finishing block is supported.

Description

technical field [0001] The invention relates to an online monitoring method for the vibration state of a high-speed wire finishing mill. Background technique [0002] The high-speed wire rod finishing mill is usually driven by a single motor with two outputs of the speed increaser, and the finishing mill is driven by the long through shaft. It is a modular design, and the roller boxes corresponding to the odd and even numbers can be installed interchangeably. The transmission makes the rolling mill vibrations of each stand interact with each other. The parts of the bevel gearboxes of each frame are expensive, and the spare parts are few in quantity. Once an accident occurs to the equipment, it is likely to lead to serious consequences. For a typical eight-stand finishing mill, the finishing mill is driven by one motor, which is output to the eight-stand roll boxes in two ways through the gear box. It has the characteristics of high working speed and continuous work of the u...

AI Technical Summary

Problems solved by technology

The original design of these shaft sleeves and spacers is a clearance fit with the shaft, which is fixed by axial compression during assembly to prevent relative rotation. However, due to factors such as shock, vibration, and temperature during actual operation, the shaft The sleeve or spacer ring is easy to loosen and rotate relative to the shaft, and in severe cases, it will also cause shaft wear

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