Novel hot mill pressing hydraulic cylinder and use method thereof

Abstract

A novel hot mill pressing hydraulic cylinder comprises a thin-walled telescopic cylinder, a combined seal, a piston and a cylinder cover. The thin-walled telescopic cylinder is completely embedded into a housing. The combined seal is fixed to the middle of the thin-walled telescopic cylinder, and the combined seal and the bottom surface of the thin-walled telescopic cylinder form a piston cavity. The piston is located in the thin-walled telescopic cylinder, and the diameter of the piston is smaller than that of the thin-walled telescopic cylinder. The piston and the combined seal divide the telescopic cylinder into two cavities, namely, the piston rod cavity and the piston cavity. The piston cavity is connected with an external hydraulic pump station through a piston cavity inlet and outlet oil way, and the piston rod cavity is connected with the hydraulic pump station through a rod cavity inlet and outlet oil way. The structure is high in motion precision; the thin-walled telescopic cylinder serves as a cylinder body, so that the system weight is reduced. The overall equipment is compact in structure and can reduce the height and the weight of the housing and improve the strength of the housing.

Description

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

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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