PROBLEM TO BE SOLVED: To provide a combine harvester that facilitates assembly and maintenance of power transmission means for transmitting power output from a treating cylinder to a conveying apparatus and enlarges the space of a threshing chamber of a threshing part.SOLUTION: In the combine harvester 1 equipped with the threshing part 4 having a threshing cylinder 41 for threshing grain culms after threshing, the treating cylinder 42 for treating an untreated material from the threshing cylinder 41 and a return conveyor 90 for returning the treated material after treatment by the treating cylinder 42 to the front of a machine body, the combine harvester 1 includes a constitution that the treating cylinder 42 is arranged behind the threshing cylinder 41 and in parallel with the threshing cylinder 41, the return conveyor 90 is disposed below the treating cylinder 42, a treating cylinder shaft 49 of the treating cylinder 42 and a conveyor shaft 91 of the return conveyor 90 are extended backward of a threshing rear plate 99 arranged at the rear part of the threshing part 4 and the power transmission means 70 for transmitting power output from the treating cylinder 42 to the return conveyor 90 is arranged between the rear end part of the treating cylinder shaft 49 and the rear end part of the conveyor shaft 91.COPYRIGHT: (C)2011,JPO&INPIT【課題】処理胴から出力される動力を搬送装置に伝達するための動力伝達手段の組み立て並びにメンテナンスを容易に行うことができるとともに、脱穀部の扱室の空間を大きくできるコンバインを提供する。【解決手段】刈取後の穀稈を脱穀する扱胴41と、扱胴41からの未処理物を処理する処理胴42と、処理胴42で処理した後の処理物を機体前方へ戻すリターンコンベア90と、を有する脱穀部4を備えたコンバイン1であって、処理胴42を扱胴41の後方で扱胴41と平行に配置し、リターンコンベア90を処理胴42の下方に配置して、処理胴42の処理胴軸49とリターンコンベア90のコンベア軸91とを、脱穀部4の後部に設けられる脱穀後板99よりも後方に延設し、処理胴42から出力される動力をリターンコンベア90に伝達するための動力伝達手段70を、処理胴軸49の後端部とコンベア軸91の後端部との間に設けたコンバイン1である。【選択図】図6
