PROBLEM TO BE SOLVED: To reduce external discharge losses by collecting grains sticking into grain culms in a treatment chamber.SOLUTION: The threshing device includes: a feed chain on one side in the lateral direction of the treatment chamber 11 to which a threshing cylinder 12 is rotatably mounted a No.4 treatment chamber 14 in which a No.4 threshing cylinder 15 is rotatably mounted on the rear side of the treatment chamber 11 and comb-teeth-shaped No.4 treatment teeth 16 on the outer peripheral surface of the No.4 threshing cylinder 15. The No.4 treatment teeth 16 are composed of a plurality of comb teeth 16a arranged along an axial direction of the No.4 threshing cylinder 15 on the outer peripheral surface of the No.4 threshing cylinder 15, and a scraping plate 16b which connects a base of the comb teeth 16a to the outer peripheral surface of the No.4 threshing cylinder 15.COPYRIGHT: (C)2012,JPO&INPIT【課題】扱室で穀稈に刺さり込んだ穀粒を回収し、機外排出ロスを低減する。【解決手段】扱胴12を軸架した扱室11の左右一側にフィードチェンを設け、扱室11の後側には四番処理胴15を軸架した四番処理室14を設け、四番処理胴15の外周面に櫛歯状の四番処理歯16を設け、四番処理歯16は四番処理胴15の外周面上に四番処理胴15の軸心方向に沿って複数配列した櫛歯16aと櫛歯16aの基部を四番処理胴15の外周面に連結する掻き板16bとで構成した。【選択図】図3
