油菜播种机槽孔轮式精量排种器设计与试验

摘要

A slot wheeled precision metering device for rapeseeds was designed. The structure and working principle were studied. The metering mechanism mainly consisted of a seed-cleaning wheel axle, a seed-retaining belt and a weed-pushing ringed wire-steel. By experiments, the key structure and performance parameters were analyzed and determined, the lowest seed damage index was obtained when the speed of seed-cleaning wheel axle was 104 r/min, the diameter of shaped hole was 2. 8 mm and the inclined angle of wire steel was 33°.%设计了一种适用于油菜精量排种的槽孔轮式排种器,分析了该排种器的结构特征及其工作原理,提出了清种轮轴实现清种、护种带护种和钢丝推种的排种机构,确定了该排种器的主要结构和性能参数.试验表明,在清种轮轴转速为104 r/min、型孔直径2.8 mm、推种钢丝倾角33°时,破碎率最低为0.73%.