Vibration suppression device for rolling mill roller system

Abstract

The invention provides a vibration suppression device for a rolling mill roller system, belonging to the field of automatic control of a rolling mill. The vibration suppression device comprises a vibration suppressor, a pressure setter, a servo amplifier, a servo valve, a hydraulic cylinder and a displacement sensor, when the rolling mill roller system vibrates, a vibration damping hydraulic cylinder vibrates together with the rolling mill roller system, the displacement sensor in the hydraulic cylinder outputs a vibration signal and sends the vibration signal to the vibration suppressor; after receiving the vibration signal from the hydraulic cylinder, the vibration suppressor processes and converts the vibration signal so as to output an oscillation signal to a feedback input end of the servo amplifier to control the action of the servo valve, so that oil entering the hydraulic cylinder oscillates, the oscillation of the oil is same as the original vibration in frequency and amplitude and opposite to the original vibration in phase, so as to suppress the vibration of the hydraulic cylinder; therefore, the vibration of the roller system is reduced and the chatter marks generated by a roller and band steel are suppressed.

Description

technical field [0001] The invention relates to a rolling mill roll system vibration suppressing device, which belongs to the field of rolling mill automation control. Background technique [0002] All over the world, a large number of rolling mills frequently have strong vibration problems during the rolling process. The prominent performance is that the roll system vibrates during the rolling process. When the vibration occurs, it will not only form vibration marks on the strip steel and rolls, but also threaten equipment safe operation. For half a century, many scholars have conducted a lot of research on rolling mill vibration. Although some achievements have been made, the vibration mechanism has not been clearly explained. Therefore, it sometimes seems helpless to suppress the rolling mill vibration. The reason is not only because of the The mechanical structure and electrical and hydraulic control systems of the rolling mill are very complex, and because there are ma...

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Problems solved by technology

For half a century, many scholars have conducted a lot of research on rolling mill vibration. Although some achievements have been made, the vibration mechanism has not been clearly explained. Therefore, it sometimes seems helpless to suppress the rolling mill vibration. The reason is not only because of the The mechanical structure and electrical and hydraulic control systems of the rolling mill are very complex, and because there are many process parameters in the rolling process, various parameters are intertwined and intertwined, forming different forms of vibration in the rolling mill. There are many kinds of vibration forms at the same time, and it has become a very complicated research field.

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