针对胡麻作物籽粒小、茎秆纤维易缠绕、作物喂入流动性差的特点和生产中未有适宜的脱粒机械的现实需要,在分析胡麻作物物理特性的基础上,设计研制了小籽粒胡麻作物半复式脱粒机。试验研究了小籽粒微揉搓脱粒运动机理,以及小籽粒作物脱粒物漂浮速度和清选分离运动参数,设计了强制喂入机构,为小籽粒作物的收获脱粒提供了借鉴。 In view of the flax crop small grain size, easy to entangle the stalk fiber, the poor flowability of the crop feeding and the actual need of threshing machinery in production, based on the analysis of flax crop physical characteristics, Duplex thresher. Experiments were carried out to study the mechanism of micro-rubbing threshing of small grains, the floating speed of threshing materials of small grain crops and the kinematic parameters of clearance separation. The forced feeding mechanism was designed to provide reference for the harvesting and threshing of small-grain crops.