Device for changing roller

Abstract

The roll changer includes one frame, one roll connecting mechanism, one traction mechanism, and several parallel elevating mechanisms with height regulation. The roll connecting mechanism is connected through a traction rope to the traction mechanism; and the elevating mechanisms have in the top one V-shaped support block to limit the transverse motion of the roll and one roll shaft for facilitating the traction of the roll, with the roll shaft capable of rotating being set on the elevating mechanism and coaxially with the support block. The present invention has the advantages of high work efficiency, high safety and saving in manpower.

Description

technical field [0001] The invention relates to an auxiliary device of a rolling mill, in particular to a roll changing device of a rolling mill, and belongs to the technical field of metal rolling in the operation and transportation department. Background technique [0002] The reversible twenty-high SENDZIMIR rolling mill has a total of six two intermediate rolls, three up and down, symmetrically distributed in the rolling mill body. In the production of stainless steel, the two intermediate rolls have defects on the roll surface due to fatigue damage and other reasons, which will affect the surface of the strip, resulting in defects and reduced product quality. Therefore, the two intermediate rollers need to be replaced regularly or irregularly when abnormal accidents occur to ensure product quality. For the replacement of the second intermediate roller, the general method is to use the counterweight to replace it. The specific process is as follows: Lift the counterwei...

AI Technical Summary

Problems solved by technology

[0004] 1. Time-consuming. During the roll changing process, it is necessary to ensure that the counterweight and the second intermediate roll are on the same straight line, so as to ensure that the equipment will not be damaged by collision with other rolls during the pulling out or loading process. Due to factors of driving control , the amount of hook adjustment is not easy to control accurately, so it takes a long time to adjust the position and height of the counterweight; moreover, after the roller is pulled out, the next roller can only be pulled out after the roller is placed on the roller stand, and the work arrangement is not good. compact, time consuming

[0005] 2. The work efficiency is low. During the roll changing process, one person is required to lift the crane, one person controls the counterweight, and one person clamps the counterweight snap ring to the head of the second intermediate roller, and the three persons can only perform their respective duties. It is not possible to hold two positions at the same time, so at least three people are required to complete the entire roll changing operation, which affects work efficiency

[0006] 3. It is very dangerous. In the process of changing the roller, because the counterweight and the roller are suspended in the air, there are potential safety hazards, which may easily cause production safety accidents.

Such as: the sudden failure of the counterweight snap ring or the sudden failure of the driving brake, causing the roller to fall and damage or hurt people

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