Grading vibration reduction device based on magnetic force

Abstract

The invention belongs to the technical field of rolling mill vibration reduction devices, and particularly relates to a grading vibration reduction device based on magnetic force. The device comprisesan annular connecting disc, a central disc, an annular support and a spline shaft. The spline shaft and the central disc are connected into a whole through interference fit. A cavity and vibration reduction windows are arranged in the annular connecting disc. Two magnets the same in magnetic pole, a hydraulic transmission device with a telescopic rod and an arc-shaped push rod are arranged in each vibration reduction window. Spring push rods are mounted on the annular support. The central disc rotates to drive the spring push rods to do translation up and down, and the arc-shaped push rods are driven by the spring push rods to move, so that the two magnets in each vibration reduction window get close to each other to generate mutual repulsive magnetic force to achieve vibration reduction.The device has the advantages that torsional vibration and vertical vibration of a transmission system can be restrained, the restraining degree is changed in a graded manner according to the actualvibration condition, and then the torsional vibration restraining effect is improved.

Description

technical field [0001] The invention belongs to the technical field of vibration damping devices for rolling mills, and in particular relates to a graded vibration damping device based on magnetic force. Background technique [0002] With the rapid development of science and technology, high-speed machinery and light structure, a large number of mechanical vibration problems continue to emerge, causing the deterioration of the working state of the machinery, resulting in a decline in the production efficiency and work quality of the mechanical device. During the operation of the rolling mill, due to the interaction between torsional vibration and vertical vibration, it not only affects the life of the transmission shaft and other components, but also speeds up the replacement cycle of parts, which will seriously cause the fracture of the transmission shaft and affect the plate and strip products. Therefore, in order to improve the quality of the plate and strip and bring hig...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the prior art. During the operation of the rolling mill, due to the interaction between the torsional vibration and the vertical vibration, it not only affects the life of the transmission shaft and other components, but also speeds up the replacement cycle of the parts, which will seriously cause the transmission shaft. Fracture, and will also affect the quality of plate and strip products, provides a simple transmission, compact structure, easy to install, can suppress the torsional vibration and vertical vibration of the transmission system, and grade the degree of suppression according to the actual vibration situation Change, and then improve the torsional vibration suppression effect of the magnetic-based staged vibration damping device

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