Double-guided work roll bending and balancing device for strip mill

Abstract

The invention provides a dual-guiding work roll bending and balancing device of a plate and strip rolling mill. The dual-guiding work roll bending and balancing device of the plate and strip rolling mill comprises a bending and balancing cylinder. A cylinder block of the bending and balancing cylinder is fixedly arranged on the inner side wall of a mill housing. An upper piston rod is arranged on the top of the cylinder block in sealing, penetrating and sliding manners. A lower piston rod is arranged at the bottom of the cylinder block in sealing, penetrating and sliding manners. The free end of the upper piston rod is connected with an upper guide cover, wherein the upper guide cover abuts against the upper portion of the outer wall of the cylinder block in a sliding manner and can move up and down along the mill housing. The top of the upper guide cover abuts against an upper work roll assembly bearing seat. The free end of the lower piston rod is connected with a lower guide cover, wherein the lower guide cover abuts against the lower portion of the outer wall of the cylinder block and can move up and down along the mill housing. The dual-guiding work roll bending and balancing device of the plate and strip rolling mill overcomes the defects that in the prior art, a guide ring and a seal ring are prone to damage, oil leakage is severe, and the use stability is poor. Full-travel dual guide protection is conducted on the upper piston rod and the lower piston rod, and the work stability of the work roll bending and balancing device is effectively improved.

Description

technical field [0001] The invention relates to the fields of metallurgical machinery and large-scale steel rolling equipment, in particular to a double-guided work roll bending and balancing device for a strip rolling mill. Background technique [0002] The use of the work roll bending device is the most basic method of strip shape control and is an important part of the finishing mill; and the work roll balance device is an important part of the rough rolling mill, which mainly plays the role of pressing the work roll assembly structure against a certain force The role of the backup roll assembly structure. The work roll bending device uses the hydraulic cylinder to apply pressure to make the work roll produce additional bending, so as to compensate the change of the shape of the roll gap due to the change of the rolling pressure and the temperature of the roll, so as to obtain a good plate shape. The work roll bending device can change the shape of the roll gap relativel...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a double-guided work roll bending and balancing device for a strip mill, which overcomes the problems of easy damage to the guide ring and sealing ring, serious oil leakage, and poor stability in use in the prior art. The rod and the lower piston rod are protected by double guides in the whole stroke, which effectively improves the working stability of the work roll bending and balancing device

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