Gravity-hydraulic balancing device and method for an upper cone roll of a ring rolling mill and its transmission system

Abstract

The invention discloses a gravity hydraulic balancing device and method for an upper tapered roller of a ring rolling machine and a driving system of the upper tapered roller. Cylinder head connecting seats are mounted on two sides of the upper tapered roller and the driving system thereof at the position of gravity action line; the tail part of an upper balance oil cylinder is hinged to an upper beam of a combined rack; the head part of the upper balance oil cylinder is hinged to the upper end of the cylinder head connecting seat; the tail part of a lower balance oil cylinder is connected with the lower beam of the combined rack through the oil cylinder mounting seat; the head part of the lower balance oil cylinder is hinged to the upper end of the cylinder head connecting seat; the upper balance oil cylinder and the lower balance oil cylinder are fed in oil only through the lower cavities; the upper cavities are communicated with the atmosphere through air filters. According to the invention, the acting force used for balancing the oil cylinders during oil feeding of the lower cavities is utilized to realize gravity balance of the upper tapered roller of the ring rolling machine and the driving system of the upper tapered roller, so that the influence on vertical movement from gravity of the upper tapered roller and the driving system of the upper tapered roller is avoided, the main oil cylinder requires only a very small acting force to drive the upper tapered roller and the driving system thereof to perform vertical no-load movement.

Description

technical field [0001] The invention relates to the technical field of an upper cone roll of a large ring rolling machine and its transmission system, in particular to a gravity-hydraulic balance device and method for an upper cone roll of a ring rolling machine and its transmission system. Background technique [0002] The upper tapered roller and its transmission system of a large ring rolling machine are often very heavy, and its center of gravity is generally located near the middle of the upper tapered roller and its transmission system. However, due to the technical requirements of rolling in the height direction of the ring, the main pressing oil cylinder for the axial rolling of the ring must be located in front of the upper tapered roller and its transmission system. Since the gravity action line of the upper tapered roller and its transmission system is far away from the action line of the main pressing cylinder, the combined action of the two will generate a large...

AI Technical Summary

Problems solved by technology

Since the gravity action line of the upper tapered roller and its transmission system is far away from the action line of the main pressure cylinder, the combined action of the two will generate a large acting moment on the frame, and this moment is on the upper tapered roller and its When the transmission system moves up and down, there will be a large frictional resistance, so that the main pressure cylinder can only expand and contract under great pressure. At the same time, it will increase the wear of the guide plate and increase the workload and cost of equipment maintenance.

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