PROBLEM TO BE SOLVED: To provide a threshing part of a combine harvester that can perform smooth threshing work with improved threshing performance achieved by making grain stalks less likely tangle together into a rope-like shape.SOLUTION: A threshing cylinder 31 of a threshing part 30 of a combine harvester is provided with helical threshing teeth 313 on the outer peripheral surface of a barrel part 311, the helical threshing teeth are provided with a plurality of independent threshing teeth 314, arranged along a first helix 301 in which the threshing cylinder is in coincident with a shaft line, the independent threshing teeth are arranged at the intersection points between the first helix and a second helix 302 that has a shaft line in coincident with the first helix 301, is wound in the same direction and has a helical pitch larger than that of the first helix, the independent threshing teeth and independent threshing teeth that adjoin the independent threshing teeth in the longitudinal direction approximately in one round ahead or behind the first helix so that they are mutually superimposed only partially on the front view of the threshing cylinder.COPYRIGHT: (C)2010,JPO&INPIT【課題】穀稈を縄状に絡み合いにくくすることで、円滑な脱穀作業を可能とし、脱穀性能の向上を図ることができる、コンバインの脱穀部を提供する。【解決手段】コンバインの脱穀部30において、扱胴31で、胴部311の外周面に螺旋扱歯313を取り付け、この螺旋扱歯に複数の独立扱歯314を取り付けて、前記螺旋扱歯を、当該扱胴と軸線が一致する第一螺旋301に沿って配置し、前記独立扱歯を、前記第一螺旋と、この第一螺旋301と軸線が一致するとともに、巻き方向が同一であり、この第一螺旋よりも螺旋ピッチが大きい第二螺旋302との交点に位置するように配置するとともに、前記独立扱歯と、この独立扱歯に対して前記第一螺旋の略一周前または後に前後方向で隣り合う独立扱歯とを、当該扱胴の正面視で、互いの一部のみが重複するように配置する。【選択図】図2
