PROBLEM TO BE SOLVED: To improve separation performance of a fruit from a crop in a crop harvester configured to separate a fruit from a crop by making the crop pass between an upper rotor and a lower rotor that are driven to rotate.SOLUTION: An upper rotor 11 that is driven to rotate around an upper axis P11, a lower rotor 12 that is driven to rotate around a lower axis P12 below the upper axis P11 in a direction opposite to the upper rotor 11 are provided. A crop A passes between the upper rotor 11 and the lower rotor 12, and striking parts 11b, 11c of the upper rotor 11 and striking parts 12b, 12c of the lower rotor 12 strike the crop A, thereby separating a fruit A2 from the crop A. The striking parts 11b, 11c of the upper rotor 11 and the striking parts 12b, 12c of the lower rotor 12 alternately pass through an area between the upper rotor 11 and the lower rotor 12.SELECTED DRAWING: Figure 13COPYRIGHT: (C)2020,JPO&INPIT【課題】回転駆動される上回転体と下回転体との間に作物を通して、作物から実を分離するように構成された作物収穫機において、作物からの実の分離性能の向上を図る。【解決手段】上軸芯Ｐ１１周りに回転駆動される上回転体１１と、上軸芯Ｐ１１の下側の下軸芯Ｐ１２周りに、上回転体１１の逆方向に回転駆動される下回転体１２とが設けられて、作物Ａが上回転体１１と下回転体１２との間を通り、作物Ａに上回転体１１の打撃部１１ｂ，１１ｃ及び下回転体１２の打撃部１２ｂ，１２ｃが当たることにより、作物Ａから実Ａ２が分離される。上回転体１１の打撃部１１ｂ，１１ｃ及び下回転体１２の打撃部１２ｂ，１２ｃが、上回転体１１と下回転体１２との間の部分を互いに交互に通過する。【選択図】図１３
