Crystallizer vibration generation device with online adjustable amplitude and vibration method of crystallizer vibration generation device

Abstract

The invention discloses a crystallizer vibration generation device with online adjustable amplitude and relates to the field of crystallizer vibration generation devices in metallurgy continuous casting devices. The device comprises a base, a motor, two bearing seats, a coupling and an eccentric shaft, wherein the motor, the bearing seats, the coupling and the eccentric shaft are arranged on the base, a vibration seat is sleeved outside the eccentric shaft, a rotating shaft is sleeved inside the eccentric shaft, a rotating shaft frame is arranged between the two bearing seats, one end of the rotating shaft frame is connected with a revolving shaft of the motor through the coupling, the center of the rotating shaft and the circle center of the cross section of the eccentric shaft are located in the same plane and not overlapped, the rotating angle between the rotating shaft and the plane is alpha, the motor is also in external connection with an electrical control system of a driving motor, the revolving shaft of the motor drives the rotating shaft through the coupling, the center of the rotating shaft serves as the rotating center, the horizontal position of the eccentric shaft serves as a central point, the rotating shaft performs equal-amplitude reciprocating rotation motion in a position direction and a negative direction, and simultaneously, the eccentric shaft is driven to vibrate up and down by the rotating shaft. Accordingly, the structure is simple and compact, the amplitude is adjustable online, the constant control of the negative slip time of a crystallizer is achieved, and the surface quality and throwing speed of casting blanks are improved.

Description

technical field [0001] The invention relates to the field of crystallizer vibration generating devices in metallurgical continuous casting equipment, in particular to a crystallizer vibration generating device with online adjustable amplitude and a vibration method thereof. Background technique [0002] The crystallizer vibration generator is one of the core equipments of continuous steel casting. The traditional crystallizer vibration generator is a sinusoidal vibration generator composed of an AC asynchronous motor, a reducer, and an eccentric mechanism. The vibration generating device has the advantages of simple mechanism, strong bearing capacity, low use cost and the like. From the late 1980s until now, this device has been the crystallizer vibration generator commonly used in the industry. [0003] With the advancement of continuous casting technology, new requirements have been put forward for continuous casting machines to increase production and reduce consumption ...

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Problems solved by technology

[0004] At present, the non-sinusoidal vibration generating device of the crystallizer is mainly driven by hydraulic drive, servo cylinder drive and mechanical drive. The hydraulic drive must be equipped with a hydraulic station, which is expensive, difficult to maintain, and high in use. The main structural forms of the non-sinusoidal vibration device driven by mechanical drive are " Ordinary motor + double eccentric shaft superposition", "ordinary motor + non-shaft gear", etc., but the structure of these mechanical non-sinusoidal drive devices is relatively complicated, and the amplitude is fixed and cannot be adjusted

The non-sinusoidal vibration device driven by the servo cylinder converts the rotational motion of the servo motor into linear motion through the screw rod. Due to the limited bearing capacity of the screw rod, it has a long life when it bears a large mass and high acceleration impact such as crystallizer vibration. The disadvantages of shortness and vibration posture distortion require frequent replacement of the screw, thus increasing the cost of use

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