PROBLEM TO BE SOLVED: To inhibit an increase of threshing load due to grain culm.SOLUTION: A threshing cylinder of a threshing device that has a cylindrical body (61) supported by a threshing cylinder shaft (12) in a threshing chamber (10) is provided with multiple plates (60) that respectively have rod-like threshing teeth (60A) arranged at intervals in an axial direction of the threshing cylinder shaft (12), and the plates (60) are arranged with intervals between each other on an outer peripheral surface of the cylindrical body (61). The plates (60) comprise a first plate (18) equipped with first threshing teeth (18A) and a second plate (19) equipped with second threshing teeth (19A), and the first plate (18) and the second plate (19) are arranged alternately on the outer peripheral surface of the cylindrical body (61). Each installation interval of the second threshing teeth (19A) of the second plate (19) is set to be larger than that of the first threshing teeth (18A) of the first plate (18).COPYRIGHT: (C)2014,JPO&INPIT【課題】穀稈による脱穀負荷の増大を抑制する。【解決手段】扱室(10)内に扱胴軸(12)で支持された筒体(61)を有する脱穀装置の扱胴において、扱胴軸(12)の軸心方向に間隔をおいて設置される棒状の扱歯(60A)を有した複数のプレート(60)を設け、これら複数のプレート(60)を筒体(61)の外周面上に互いに間隔をおいて配置する。また、前記プレート(60)を、第1扱歯(18A)を備えた第1プレート(18)と第2扱歯(19A)を備えた第2プレート(19)から構成し、この第1プレート(18)と第2プレート(19)を筒体(61)の外周面上に交互に備え、第1プレート(18)における第1扱歯(18A)の設置間隔よりも、第2プレート(19)における第2扱歯(19A)の設置間隔を大きく設定する。【選択図】図16
