Strength knockout pin

Abstract

The invention discloses a strength knockout pin which comprises a body, a bolt is welded at one end of the body, a fixed nut is welded at the other end of the body, the strength knockout pin also comprises a screw and a movable nut, the screw is matched with the fixed nut, and the movable nut is matched with the screw. The strength knockout pin disclosed by the invention has the beneficial effects that the application of a steel pipe body ensures that the strength knockout pin has enough strength, so that the strength knockout pin is not bent and deformed when the strength knockout pin is pressed against honorific arches on both sides of the strength knockout pin; and the strength knockout pin disclosed by the invention has the advantages of simple structure, good application effect, simple and easiness for operation.

Description

technical field [0001] The invention relates to the technical field of metallurgy and steel rolling, in particular to a powerful ejector rod capable of pressing against a sliding plate of a rolling mill archway. Background technique [0002] As we all know, the size of the gap between the sliding plate of the rolling mill archway and the sliding plate of the work roll chock determines the rolling stability of the rolling mill. If the gap between the two slides is too large, the roll, an important tool for steel rolling, will swing back and forth, and the rolled piece will swing in different directions during reciprocating rolling, which not only makes it difficult to control the shape of the plate, but also affects the rolling mill. The impact of the archway, the stability of the connecting shaft and the service life of the work roll balance cylinder all have adverse effects, so it is very important to accurately measure the window size between the sliding plates of the roll...

AI Technical Summary

Problems solved by technology

Bolts are used between the rolling mill archway and the slide plate. In the fast-paced and high-load production process, under the long-term action of external force, the connecting bolts may become loose, and there will be a gap between the rolling mill archway and the slide plate. Tighten the bolts before measuring the size. , and then measure, and configure the size of the bearing seat slide plate according to the measured size, but after the sliding plate of the rolling mill archway and the work roll bearing seat slide plate are matched according to the above process, the actual operation of the two still shakes due to the excessive gap, which affects the rolling stability

Later, after a long period of observation, it was found that after the bolt holes of the rolling mill archway were tightened and tightened many times, the bolt holes were enlarged and could not be tightly connected with the bolts, resulting in distortion of the measured dimensions, which resulted in the inability to closely fit the sliding plate of the rolling mill archway and the sliding plate of the work roll chock

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