Non-sinusoidal oscillation device of continuous casting crystallizer and oscillation method thereof

Abstract

The invention provides a non-sinusoidal oscillation device of a continuous casting crystallizer and an oscillation method thereof. The device mainly comprises a variable-frequency motor, a reducer variator, an eccentric shaft and a connecting rod. The invention relates to a method for achieving non-sinusoidal oscillation. The device is characterized in that a driving spur gear and a driven noncircular gear are arranged in a reducer variator housing; an axis of the driving spur gear is vertically intersected with the axis of the driven noncircular gear; an output shaft of the variable-frequency motor is connected to the driving spur gear through a coupling; the driving spur gear is engaged with the driven noncircular gear, and the driven noncircular gear is connected with one end of the eccentric shaft through the coupling; one end of the connecting rod is hinged with the eccentric shaft while the other end of the connecting rod is hinged with an oscillation frame. According to the device, a transmission chain is short; the structure is compact; the device cost is low; sudden stopping, oil leaking and other phenomena can be avoided; the reliability is high; the bearing capacity is high; the control is simple; the waveforms are accurate; the displacement and speed waveforms are smooth and continuous; the acceleration is free of sudden changing; rigid and flexible impacting are avoided; the waveforms and dynamic characteristic properties are outstanding.

Description

technical field [0001] The invention belongs to the technical field of continuous steel casting. technical background [0002] Continuous steel casting has obvious advantages in saving energy, improving production efficiency and optimizing slab quality. In the process of pouring molten steel into the crystallizer, the mold must vibrate according to certain rules to ensure the quality of the slab and mold. The lubricating conditions are perfect to prevent the billet shell from sticking to the wall of the crystallizer, resulting in failure to pull or leakage accidents. The crystallizer vibration rule, that is, the change rule of the crystallizer vibration speed with time, is the most critical content in the crystallizer vibration technology. At present, non-sinusoidal vibration is recognized as the optimal waveform for high-efficiency continuous casting, and non-sinusoidal mold vibration devices have become the focus of research by scholars at home and abroad. Nowadays, ther...

AI Technical Summary

Problems solved by technology

However, the frequent positive and negative rotation of the servo motor will affect the control accuracy. The ball screw, the core transmission component, is not only easy to wear under high-frequency and small-amplitude reciprocating motion, but also has poor load-bearing and impact resistance.

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