Linkage roll adjustment-type rolling mill for rectangular steel tubes

Abstract

The invention discloses a linkage roll adjustment-type rolling mill for rectangular steel tubes. The linkage roll adjustment-type rolling mill comprises a base, a left rack, a right rack, a top roll, a bottom roll, a left roll and a right roll; two rectangular guide holes are respectively formed in the left rack and the right rack, and the left rack and the right rack are respectively provided with a left support plate and a right support plate; a left sliding seat and a right sliding seat are respectively arranged in the rectangular guide holes; the left support plate and the right support plate are respectively provided with a cylinder of which the piston rod is connected with the corresponding sliding seat; the linkage roll adjustment-type rolling mill also comprises a reversing valve for controlling the left cylinder and the right cylinder; the linkage roll adjustment-type rolling mill also comprises an arch adjusting bracket, a cross beam, a lifting rod and a locknut. According to the linkage roll adjustment-type rolling mill disclosed by the invention, the sliding seats are respectively pushed by the cylinders to adjust the left roll and the right roll in position, and moreover, the left cylinder and the right cylinder are controlled by the identical reversing valve, so that the left roll and the right roll are equal in amount of movement; moreover, the arch adjusting bracket is connected with the left end and the right end of the top roll, and the top roll is adjusted by the lifting screw rod to rise and fall; roll adjustment is convenient, the adjustment time is short, and the work efficiency is high.

Description

technical field [0001] The invention relates to rolling equipment, in particular to a rolling mill for rolling rectangular steel pipes. Background technique [0002] The linkage roll adjustment type rectangular steel pipe rolling mill includes a left frame and a right frame, and the upper roll, the lower roll, the left roll and the right roll are respectively arranged on the left frame and the right frame. [0003] In the prior art, the left frame and the right frame of the linked roll-adjusting rectangular steel pipe rolling mill are separated from each other, and the frame as a whole has a U-shaped structure, which has poor rigidity and is easy to vibrate during the rolling process, resulting in poor surface quality of the steel pipe. Difference. [0004] And when adjusting the upper and lower positions of the upper roll, it is necessary to adjust the screw rods on the left frame and the right frame simultaneously, which has poor adjustment convenience and takes a long ti...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a linkage-roller-adjusting rectangular steel tube mill to solve the problems of poor convenience and time-consuming adjustment of the upper roll, left and right roll positions of the rectangular bar tube mill in the prior art

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