椭圆振动筛设计理论中的几个问题

Problems existing in design theory of elliptic vibrating screen

本文根据动力学原理分析了椭圆筛的扭振问题;详(?)论证了不产生扭振的条件;指出椭圆筛抛掷角的不可调节性;讨论了在扭振情况下椭圆筛的振动特性的变化。

In the paper the author analyzes the torsional vibration problem of a elliptic vibrating screen by means of the dynamic principles. The conditions under which torsianal vibration does not occur are expounded carefully. Additionally it is pointed out that the elliptical vibrating screen's throw angle is notadjustable. And the variation of vibrating characteristics is discussod under the circumstances of torsional vibration.