Rolling mill

Abstract

The invention provides a rolling mill. The rolling mill comprises a rack, roller mechanisms and pressing mechanisms. The rack comprises a left archway, a right archway and at least one pair of guide cross beams, wherein the guide cross beams are horizontally connected between the left archway and the right archway. The left archway and the right archway each comprise two stand columns and a connecting cross beam, wherein the two stand columns are arranged oppositely and vertically, and the two ends of the connecting cross beam are detachably connected to the bottoms of the two stand columns correspondingly. The guide cross beams in each pair are arranged between the left archway and the right archway in a front-back symmetry mode, and the two ends of each guide cross beam are detachably connected with the corresponding stand column of the left archway and the corresponding stand column of the right archway correspondingly. Both an upper roller assembly and a lower roller assembly slidably abut against the stand columns. The pressing mechanisms drive the upper roller assembly and the lower roller assembly to slide on the stand columns in a face-to-face mode or oppositely correspondingly, and roller seams are symmetrically decreased or increased through the sliding. According to the rolling mill, a roller system can be disassembled and assembled rapidly, and real-time online symmetrical adjustment of the roller seams is achieved; and since a prestressing mechanism is arranged, on-load pressing can be achieved.

Description

technical field [0001] The invention relates to the technical field of steel rolling machinery, in particular to a rolling mill. Background technique [0002] The closed rolling mill in the prior art has heavy weight, long stress loop, large bounce, poor rolling mill rigidity and poor rolling precision. The roll gap of the rolling mill can only be adjusted on one side, the pressing device can only press down the upper roll, and the lower roll can only be adjusted by shims, so the adjustment of the roll gap is very inconvenient. Moreover, it takes a long time to change the roller system online, the operation and maintenance are inconvenient, and the operation efficiency is very low. There is also a short stress line rolling mill in the prior art, which has a short stress loop and relatively high rigidity; however, the short stress line rolling mill is still insufficient in strength and poor in stability, and is difficult to adapt to the rolling of alloy steel and special ste...

AI Technical Summary

Problems solved by technology

[0002] The closed rolling mill of the prior art has heavy weight, long stress loop, large bounce, poor rigidity of the rolling mill, and poor rolling precision

The roll gap of the rolling mill can only be adjusted on one side. The pressing device can only press down the upper roll, and the lower roll can only be adjusted by shims. The adjustment of the roll gap is very inconvenient

Moreover, it takes a long time to replace the roller system online, the operation and maintenance are inconvenient, and the operation efficiency is very low

There is also a short stress line rolling mill in the prior art, which has a short stress loop and relatively high rigidity; but the short stress line rolling mill is still insufficient in strength and poor in stability, and is difficult to adapt to the rolling of alloy steel and special steel

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