平摆动复合振动筛的动态仿真分析

为详细了解筛网在空间中的运动轨迹，根据曲柄摇杆与凸轮机构工作原理，推导出平摆动复合振动筛筛网在空间中的位移方程, 基于实体建模技术和虚拟样机技术对筛网上任意点进行了运动轨迹分析，对质心点进行了速度、加速度、角速度、角加速度仿真分析。结果发现，此振动筛筛网上从入料口至出料口各点的运动轨迹为类似椭圆形状，长轴位置呈现逆时针旋转；在水平方向的最大振幅逐渐减小，竖直方向上的最大振幅先减小后增大；质心点位置受水平往复力较大，可有效防止卡塞现象，垂直方向往复力较小，增加物料与筛面接触时间，提高了筛分效率。

Dynamic Simulation Analysis of Flat Swing Composite Vibrating Screen

In order to understand the movement track of the screen in space, according to the working principle of crank rocker and cam mechanism, the displacement equation of the screen in space was derived. Based on the solid modeling technology and virtual prototyping technology, the movement track of any point on the screen was analyzed, and the velocity, acceleration, angular velocity and angular acceleration of the center of mass were simulated. It is found that the motion track of each point on the screen is similar to the ellipse shape, with the long axis rotating anticlockwise; The maximum amplitude in the horizontal direction decreases gradually, and the maximum amplitude in the vertical direction decreases first and then increases; The position of the center of mass is greatly affected by the horizontal reciprocating force, which can effectively prevent the jamming phenomenon. The vertical reciprocating force is small, which increases the contact time between the material and the screen surface, and improves the screening efficiency.