Control method of hydraulic pressure balance device of twenty-roller steel plate cold rolling mill transmission roller

Abstract

The invention belongs to a hydraulic pressure balance system of a steel plate cold rolling mill transmission roller, in particular to a hydraulic pressure balance device of a twenty-roller steel plate cold rolling mill transmission roller and a control method. The hydraulic pressure balance device is characterized in that the hydraulic pressure balance device comprises a first oil cylinder and second oil cylinder which are used control the balance of the two ends of the transmission roller, a third magnetic exchange valve and fourth magnetic exchange valve which are used to control the pistonrods of the first oil cylinder and the second oil cylinder to move upward and a first magnetic exchange valve and second magnetic exchange valve which are used to control the piston rods of the firstoil cylinder and the second oil cylinder to move downward, the stress on the two ends of the transmission roller can be uniform and balanced under the function of the two oil cylinders, the influenceof the disturbing force of a junction box to workpieces is avoided, and the processing quality of products is increased. The invention provides the hydraulic pressure balance device, which has simplestructure, low cost and good effect and is easy to adjust, of twenty-roller steel plate cold rolling mill transmission roller and the control method.

Description

technical field [0001] The invention belongs to a hydraulic balance system for driving rolls of a steel plate cold rolling mill, in particular to a hydraulic balancing device and a control method for a driving roll of a 20-high steel plate cold rolling mill. Background technique [0002] Due to the interference of the periodic force of the coupling weight when the transmission rolls of the existing 20-high rolling mill work, the interference force is transmitted to the work rolls, so that the forces on both ends of the work rolls are unequal, and the plate rolling is unstable and affects the rolling quality. In severe cases, it can't even work normally. [0003] The existing 20-high rolling mills at home and abroad also use the following method to balance the disturbance caused by the weight of the coupling: that is, add a supporting device at the position of the coupling close to the drive roller to balance the weight of the coupling. The shaft coupling and the drive rolle...

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Problems solved by technology

[0003] The existing 20-high rolling mills at home and abroad also use the following method to balance the disturbance caused by the weight of the coupling: that is, add a supporting device at the position of the coupling close to the drive roller to balance the weight of the coupling. The shaft coupling and the drive roller are not concentric, and the generated disturbance force changes according to the sinusoidal cycle, so the commissioning device cannot completely eliminate the influence of the disturbance force on the drive roller

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