A method for changing work rolls in a rolling mill

Abstract

The invention discloses a working roll replacing method for a rolling mill and belongs to the technical field of roll replacement of rolling mills. The method includes the following steps that firstly, an upper supporting roll is lifted; secondly, transverse hydraulic cylinders are started, piston rods of the transverse hydraulic cylinders push sliding blocks and track boards to move close to lower roll bases, and the track boards are made to arrive under roll bottom wheels at last; thirdly, longitudinal hydraulic cylinders are started, the piston rods, located on piston rods of the longitudinal hydraulic cylinders, of the transverse hydraulic cylinders are lifted upwards through the piston rods of the longitudinal hydraulic cylinders, and therefore the track boards are lifted upwards and make contact with the roll bottom wheels; fourthly, a pushing hydraulic cylinder is started, a piston rod of the pushing hydraulic cylinder pushes the lower roll bases outwards, the lower roll bases move on the track boards through the roll bottom wheels at the bottom of the lower roll bases, and therefore a lower working roll is pushed out of a rolling mill housing; and fifthly, a new working roll system is applied. By the adoption of the technical scheme, the working rolls can be integrally replaced easily and rapidly, the roll replacement efficiency is high, and no equipment space is occupied.

Description

technical field [0001] The invention relates to the technical field of roll changing in rolling mills, and more specifically, relates to a method for changing work rolls in a rolling mill. Background technique [0002] The rolling mill is a commonly used mechanical equipment in the metallurgical industry. When the rolling mill equipment is working, the roll system is generally composed of backup rolls, work rolls, etc. The rolls in the roll system are always subjected to rolling forces that change in direction and size; Long-term use of the rolls will cause fatigue wear or damage, and the rolls need to be maintained or replaced; in the prior art, the replacement of the rolls is usually achieved by pushing and pulling the traditional manual and overhead cranes, but because the rolls are made of iron and heavy, artificial The method not only wastes time, but also easily causes danger, especially in the high-span and platform of the workshop. During the production roll change p...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the shortcomings of complex work roll change mechanism and large space occupation in the prior art, and provides a work roll change method for a rolling mill, which can simply and quickly replace the work roll as a whole, and has high roll change efficiency. and does not take up space on the device

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