本文对曲柄连杆机构驱动的往复振动筛体运动及谷粒沿筛面运动进行了理论研究。探讨了吊杆配置对筛体运动的影响,提出了在振动方向不通过曲柄中心状况下的筛体运动方程和谷粒沿筛面运动方程。同时还提出了反映谷粒沿筛面运动状态的两个界限指标及其理论计算公式。试验结果证明,理论计算值和实测值之间表现了良好的一致性。 In this paper, the reciprocating vibrating screen driven by the crank and rod mechanism and the movement of grain along the screen surface are theoretically studied. The influence of the boom configuration on the screen body is discussed. The equation of motion of the screen body and the motion equation of the grain along the screen surface are presented in the condition that the vibration direction does not pass the center of the crank. At the same time, two limit indexes and their theoretical formulas that reflect the movement of grain along the screen surface are proposed. The experimental results show that there is a good agreement between the theoretical calculated value and the measured value.