PROBLEM TO BE SOLVED: To shorten a threshing chamber of a combine harvester, that is, to shorten the whole length of the combine harvester with a threshing cylinder effectively applying a threshing action while maintaining an excellent backward feeding action of grain stalks.SOLUTION: The threshing cylinder (40) rotatably mounted in the threshing chamber (5) is formed in polygonal column shape. Each flat surface part (44f) on the outer periphery of the threshing cylinder (40) is protrusively provided with feed plates (48) inclining relative to the rotating direction (A) of the threshing cylinder (40), and each ridgeline part (44y) formed between the respective flat surface parts (44f) on the outer periphery of the threshing cylinder (40) is protrusively provided with rod-like threshing teeth (47a) or plate-like threshing teeth (47b) at suitable spaces. The threshing cylinder (40) of polygonal column shape is constituted to be dividable into a plurality of half cylinder plates (44a, 44b), and the threshing cylinder (40) is constituted to be divided into individual half cylinder plates (44a, 44b) and taken out of the threshing chamber (5).COPYRIGHT: (C)2013,JPO&INPIT【課題】穀稈の後方への送り作用を良好に維持しながら脱穀作用も効果的に作用する扱胴によって、コンバインの扱室を短くすなわちコンバインの全長を短く出来るようにする。【解決手段】扱室(5)内に軸架する扱胴(40)を多角柱状に形成すると共に、該扱胴(40)外周の各平面部(44f)に、送り板(48)を扱胴(40)の回転方向(A)に対して傾斜させて突設し、前記各平面部(44f)間に形成される扱胴(40)外周の稜線部(44y)には、杆状扱ぎ歯(47a)或いは板状扱ぎ歯(47b)を適宜間隔で突設する。また、多角柱状の扱胴(40)を複数の半割胴板(44a,44b)に分解可能に構成し、該扱胴(40)を個々の半割胴板(44a,44b)に分解して扱室(5)内から取出す構成とする。【選択図】図1
