自定中心振动筛的自定中心原理研究

筛箱各点运动轨迹为圆的振动筛工作时,激振轴上存在唯一的瞬时速度中心线,而且瞬心线的位置不变。瞬心线位于激振轴中心线与偏心块质心之间,该线到激振轴中心线的距线等于振动筛的振幅。只要胶带轮的几何中心安装于瞬心线上,胶带轮就只作定轴转动,不随筛箱振动。

STUDY OF PRINCIPLE OF SELF-CENTERING OF SELF-CENTERING SHALE SHAKER

As the shale shaker whose locus of every point of the shale shaker s frame is a circle is steadily working, there is the only instantaneous centreline of velocity on the vibrating shaft, and its position is fixed. The instantaneous centreine of velocity is situated between the centerline of vibrating shaft and the centroid of the eccentric pieces, and its distance to the centreline of the vibrating shaft is equal to the amplitude of the shale shaker. Provided the geometric centre of the rubber belt pully is mounted on the instantaneous centreline of velocity，the rubber belt pully only rotate around the fixed axis，and doesn’t vibrate with the shale shaker frame.