An integral arch type four-high rolling mill

Abstract

The invention discloses an integral arch type four-roller rolling mill. The integral arch type four-roller rolling mill comprises an arch, an upper operating roller and a lower operating roller, two sides of the arch are provided with rectangular windows, and both the upper operating roller and the lower operating roller are hinged to the rectangular windows. Two backing rollers are arranged above the upper operating roller. Each backing roller comprises a central shaft, a plurality of saddles, two eccentric gears and a plurality of rolling sleeves, the eccentric gears are mounted at two ends of the central shaft respectively, the saddles are fixedly connected with the arch, and the saddles are rotationally matched with the central shaft. The arch is provided with a first hydraulic cylinder and a second hydraulic cylinder, a piston rod of the first hydraulic cylinder is connected with a first rack extending into the backing rollers and meshed with the eccentric gear at one end of the backing rollers, a piston rod of the second hydraulic cylinder is connected with a second rack extending into the backing rollers and meshed with the eccentric gear at the other end of the backing rollers. The press accuracy of the upper operating roller is improved and rolling seams can be changed so as to improve band thickness accuracy.

Description

technical field [0001] The invention belongs to the technical field of four-roll rolling mills, and in particular relates to an integral archway-type four-high rolling mill. Background technique [0002] A rolling mill is the equipment that realizes the metal rolling process. Generally refers to the equipment that completes the whole process of rolling production, including main equipment, auxiliary equipment, lifting and transportation equipment and auxiliary equipment. At present, the traditional rolling mills are all split-type archways, and the hydraulic cylinder directly acts on the bearing seat of the upper work roll to adjust the pressing position of the upper work roll; the hydraulic oil enters the hydraulic cylinder through the electro-hydraulic reversing valve, and the pressing accuracy Low. How to design a four-high rolling mill that is convenient for adjusting the upper work roll is a technical problem to be solved urgently by those skilled in the art. Conten...

AI Technical Summary

Problems solved by technology

At present, the traditional rolling mills are all split-type archways, and the hydraulic cylinder directly acts on the bearing seat of the upper work roll to adjust the pressing position of the upper work roll; the hydraulic oil enters the hydraulic cylinder through the electro-hydraulic reversing valve, and the pressing accuracy Low

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