为研究高效振动筛在激振合力作用线偏移筛体质心时的运动规律，采用 Solidworks 和 AD-AMS 软件建立了 TQLZ 型高效振动筛的虚拟样机模型，研究激振合力作用线偏移筛体质心的位置对筛体典型点运动的影响。结果显示：当激振合力作用线从筛体质心上方经过时，筛面前端点的合成振幅和振动方向角增大，而筛面后端点的则减小，上层筛面点的振幅大于下层筛面点的；反之，当激振合力作用线从筛体质心下方经过时，筛面的运动规律则相反；无论激振合力作用线与筛体质心的相对位置如何，筛体上各点的运动轨迹都近似为一条直线，并且对筛体质心的运动没有影响；激振合力作用线偏移筛体质心的位置主要影响筛体的 y 向振幅，而对 x 向振幅影响较小。该结论为设计出性能更加优良的振动筛提供理论依据。%In order to analyze the movement of the efficient vibrating screen in the case of the action line of the exciting force offset screen centroid.A virtual prototype model of TQLZ type vibrating screen was established using Solidworks and ADAMS software.The influence of the location of the action line of the exciting force offset screen centroid to the movement of typical point on the screen body was studied.The results showed that:when the action line of the exciting force passes through above the screen centroid, the synthesis amplitudes and the vibration direction angles of the upper points on the screen increase, while the lower points'are reduced.The amplitudes of the upper screen points are greater than the lower screen points.On the contrary,when the action line of the exciting force passes through below the screen centroid,the movement of the screen is opposite.Regardless of the relative position of the action line of the exciting force and the screen centroid,the trajectory of an arbitrary point on the screen is approximate to a straight line,and no effect on the movement of the screen centroid.The position of the action line of the exciting force offset screen centroid affect the amplitude of y direction of the screen mainly and smaller affect on the amplitude of x direction.The conclusion provides a theoretical basis to design a more excel-lent performance of vibrating screen.
展开▼
