A new hot-rolling mill depressing hydraulic cylinder and its application method

Abstract

A new type of hydraulic cylinder for pressing down a hot rolling mill, including a thin-walled casing, a combined seal, a piston, and a cylinder head; the thin-walled casing is completely embedded inside the arch; The bottom surface of the casing constitutes the piston chamber; the piston is located in the thin-walled casing, and the diameter of the piston is smaller than the diameter of the thin-walled casing; the piston and the combined seal jointly divide the casing into two chambers: the piston rod chamber and the piston chamber ; The piston chamber is connected to the external hydraulic pump station through the oil passage in and out of the piston chamber, and the piston rod chamber is connected to the hydraulic pump station through the oil passage in and out of the rod chamber. This kind of structure has high motion precision, and the cylinder body adopts thin-walled casing to reduce the weight of the system. The overall equipment has a compact structure, which can reduce the height of the archway, reduce the weight of the archway, and increase the strength of the archway.

Description

Technical field [0001] The invention relates to the technical field of a reduction device for an aluminum strip hot rolling mill, and provides a novel hot rolling mill reduction hydraulic cylinder structure scheme. Background technique [0002] The reduction device is the actuator for adjusting the roll position of the aluminum strip hot rolling mill. It requires fast speed, high position accuracy, and has the function of preventing "steel stuck". In the aluminum strip hot rough rolling mill, due to the large adjustment stroke of the upper roll system, the reduction device generally adopts the scheme of electric reduction 22 plus hydraulic pad 23, such as figure 1 ; In the aluminum strip hot finishing mill, due to the small opening and the adjustment stroke of the upper roll system, the hydraulic cylinder reduction scheme is generally used, such as figure 2 . [0003] In the hot rough rolling "electric pressing" plus "hydraulic cushion" program, such as figure 1 , The upper part i...

AI Technical Summary

Problems solved by technology

[0005] The advantage of this scheme is that the structure is simple, and the disadvantage is that the hydraulic cylinder occupies a large space in the height of the rolling mill, the mechanism is not compact, and it causes a certain waste of materials. It is suitable for hot rolling mills with small openings.

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