Roll gap adjusting mechanism of rolling mill

Abstract

The invention relates to a roll gap adjusting mechanism of a rolling mill. The roll gap adjusting mechanism comprises a lower guide roll bracket, a lower guide roll, an upper guide roll bracket and an upper guide roll, wherein the two ends of the lower guide roll bracket are correspondingly connected with bottom end bearing bases; the lower guide roll is rotationally arranged on the lower guide roll bracket; the two ends of the upper guide roll bracket are correspondingly connected with upper end bearing bases; the upper guide roll bracket is corresponding to the lower guide roll bracket; the upper guide roll is rotationally arranged on the upper guide roll bracket; the bearing bases are in threaded connection with lead screws through inner-layer sleeves; the bottom ends of outer-layer sleeves are butted against the inner-layer sleeves through spherical surface sleeve pads; balance nuts are connected to the lead screws through threads; through covers coat the lead screws, and the lower ends of the through covers are fixedly connected with the outer-layer sleeves; and pretightening springs are arranged between the through covers and the balance nuts. As the guide roll brackets are arranged on the bearing bases, a guide roll gap can be synchronously adjusted when adjusting a mill roll gap; and the pretightening springs apply an upward elastic force to the through covers, and the elastic force is transferred to the outer-layer sleeves through the through covers and transferred to the inner-layer sleeves through the outer-layer sleeves so as to upwards lift the inner-layer sleeves to eliminate a thread gap.

Description

technical field [0001] The invention relates to the technical field of metallurgical manufacturing, in particular to a rolling mill roll gap adjustment mechanism. Background technique [0002] A rolling mill is required in the steel rolling process. Usually, the steel passes through the guide rollers of the guide device and then enters the rolls for rolling. In the prior art, when it is necessary to process rolled pieces of other specifications, the rolling mill generally adjusts the gap between the rolls through the screw slider mechanism to meet the production requirements, but the existing guide device cannot adjust the gap between the guide rolls. For adjustment, it is necessary to replace the guide device of the corresponding model, which is cumbersome to operate and affects production efficiency. [0003] In addition, due to the large rolling force in the steel rolling process, the thread gap generated when the screw thread is matched must be considered, otherwise the...

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Problems solved by technology

[0004] However, as we all know, the working conditions of elastic colloids are relatively harsh, and they are not suitable for high and low temperatures. At the same time, due to the effect of alternating loads, elastic colloids will age rapidly and their service life is very short. Frequent replacement of elastic colloids will cause great harm. The increase in steel rolling costs

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