Two-roll horizontal mill

Abstract

The invention discloses a two-roll horizontal mill, which comprises a mill base, a mill frame, an upper roller and a lower roller (3, 2), a roller gap alignment mechanism and a roller gap adjusting mechanism, wherein the upper roller and the lower roller (3, 2) are arranged in the mill frame and are parallel to each other. Four angles at the upper end of the mill base are provided with an upright post respectively. The mill frame is a floating frame (11) and is positioned among the four upright posts. A lower roller bearing seat (1) is arranged on a lower beam of the floating frame (11). The roller gap adjusting mechanism is a hydraulic transmission mechanism or a mechanical transmission mechanism arranged on an upper beam of the floating frame. The roller gap alignment mechanism includes a mobile type top cap on an upper end part of the upright post and the hydraulic transmission mechanism or mechanical transmission mechanism installed on the top cap. When a gap between two rollers is adjusted, the roller gap between the two rollers can be automatically centered. The equipment is simplified, low in manufacturing cost, convenient to maintain and high in operating rate and can be used for continuously rolling rectangular steel, pipes, bars and sections.

Description

technical field [0001] The invention relates to a two-roll rolling mill, in particular to a two-roll horizontal rolling mill capable of rolling rectangular steel, pipes, bars and profiles. Background technique [0002] The two-high horizontal rolling mill includes: a rolling mill base and a rolling mill frame fixed on the rolling mill base, two horizontal rolls installed in the rolling mill frame parallel to each other, a roll balance mechanism and a roll gap adjustment mechanism installed on the rolling mill frame. Among them: the rolling mill base is installed on the foundation; the rolling mill stand is a cuboid with a cavity, and windows are opened on the four rectangular walls of the cavity cuboid to form a cuboid hollow frame; two horizontal rolls pass through two The roll chocks at the end are installed parallel to the rolling center line A-A up and down in the cavity between the windows on the opposite sides of the four windows of the rolling mill stand. The upper an...

AI Technical Summary

Problems solved by technology

[0004] Its shortcoming is that since the roll gap adjustment mechanism moves two rolls separately, the centering movement of the two rolls is carried out by displacement sensors, clutches, and synchronous shafts. Synchronous interlocking, while the relative movement reduces or increases the gap between the two rolls, it adjusts and controls the synchronous equidistant centering movement of the two rolls. The structure is relatively complicated and the cost is high.

[0005]Because the roll gap adjustment mechanism of the lower roll is installed at the lower part of the rolling mill stand, its hydraulic servo cylinder, fluid pipeline or motor, cable pipeline and lead screw nut are all in the belt During the immersion and scouring of scale and rolling cooling water, even due to the accumulation of scale around the rolling mill, the working environment in the lower part of the rolling mill frame is very harsh, which seriously affects the service life of the lower roll gap adjustment mechanism and makes maintenance difficult. Very prominent, resulting in reduced production availability and increased maintenance costs

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