Method for detecting centering degree of vertical roll by adopting laser infrared gradienter

Abstract

The invention discloses a method for detecting the centering degree of a vertical roll by adopting a laser infrared gradienter. Front and rear laser vertical planes and a horizontal plane are output by adopting the laser infrared gradienter. The method comprises the following steps: firstly, the front and rear laser beam vertical planes of the gradienter are superposed with the central point of arolling mill by utilizing the principle that three points are collinear, and a rolling central line is found; secondly, tangent points can be formed by direct light in the laser horizontal plane and the cylindrical roller surfaces of the vertical roll, and a bright and fine space cross curve is formed by the horizontal plane and the vertical planes; thirdly, the two ends of a flexible rule are aligned with the tangent points of the roller surfaces on the two sides, the flexible rule is leveled according to the laser horizontal line, and the two ends of the flexible rule and the midpoint of thecross curve are marked; and finally, the flexible rule is taken down, L1 and L2 are read according to the cross center point, and the centering degree delta L of the vertical roll is obtained according to delta L=(L1-L2) / 2.

Description

technical field [0001] The invention relates to a method for detecting the centering degree of vertical rollers by using a laser infrared level meter. Background technique [0002] A pair of large vertical rolls are generally arranged in front of the roughing mill of hot continuous rolling mills for strip width reduction and width precision control; due to the continuous rolling relationship between the vertical rolls and the roughing mill, the vertical rolls are moderately aligned with the roughing mill slab. The side bending of rolling will have a great impact. In order to ensure the stable rolling of the strip mill, the vertical roll has high requirements for medium process accuracy (≤3mm), which is an important periodic inspection item, mainly for the vertical roll transmission reducer. Loose displacement and frequent side bending deviation of the strip must be detected. [0003] Due to the fact that the actual vertical roll alignment detection is limited by the layout ...

AI Technical Summary

Problems solved by technology

[0003] Due to the fact that the actual vertical roll alignment detection is limited by the layout of the vertical roll mill, the detection accuracy of the vertical roll alignment is not high. The roll change needs to be moved, so that the upper part of the vertical roll surface cannot be grounded; (2) Since the vertical roll surface is cylindrical, the diameter of the vertical roll is large, and the opening of the vertical roll of the wide-band steel mill is large (> 1m), when the rough rolling mill is used The central point of the archway and the front and rear detectors, the rolling center line draws the steel wire, and uses a long ruler to measure the cylindrical roll surface. The error is large and cannot meet the needs of on-site precision testing.

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