对铡草机常用的凹圆弧刀、凸圆弧刀和折线刀轮刀切碎器切碎干饲草的功率消耗进行了试验研究，并测定了他们对干饲草的切碎性能，分析了轮刀切碎器的结构参数和运动参数对切碎性能的影响，讨论了合理工作参数的选择，对轮刀切碎器的设计研究具有参考价值 The research on the power consumption of the commonly used concave arc knife, convex arc knife and broken knife cutter chopped dry forage grass were carried out and their shredding performance was analyzed. The structure parameters and the movement parameters of chopper chopper on the chopping performance, discusses the choice of reasonable working parameters, the design of the chopper chopper with reference value