为了分析康拜因谷物损失,对谷粒在康拜因清选仓内的运动轨迹及其撞在鱼鳞筛片后反弹运动轨迹进行了计算机模拟。在计算机模拟程序中运用了数值分析的方法进行积分运算.通过对小麦粒的模拟计算,发现增加清选气流速度的垂直分量及鱼鳞筛片的开度可以减少谷物损失。 In order to analyze the damage of Kangbayen grain, the movement trajectory of the grain in Kangbayin clearance bin and the trajectory of its rebound after it hit the sieve of fish scale were simulated. Numerical simulation is used in the computer simulation program to calculate the integral.According to the simulation calculation of wheat grain, it is found that increasing the vertical component of air flow rate and the opening of fish scale sieve can reduce the grain loss.