PROBLEM TO BE SOLVED: To make compact and simplify a transmission mechanism from an engine to a bottom screw of a grain-collecting tank, while making the right and the left weight balance of a machine body proper, by installing the engine in the inside of the machine body in a driving structure of a grain-collecting part, in a combine harvester which is constituted by arranging a threshing device and the grain-collecting tank in parallel on the right and the left positions, laterally arranging the engine in the front side of the grain-collecting tank, and constituting the structure so that motive power is transmitted to the front end part of the bottom screw of the grain-collecting tank.SOLUTION: The driving structure of the grain-collecting part in the combine harvester is constituted, such that the output shaft 63 is protruded from the engine 4 in the horizontal outer direction of the machine body, and an intermediate transmission shaft 71 is supported horizontally in the front side of the grain-collecting tank 8 the position of the intermediate transmission shaft 71 in the inside of the machine body is connected to the output shaft 63 of the engine 4 so as to be interlocked and the position of the intermediate transmission shaft 71, in the outside of the machine body, is connected interlockingly to the front-end part of the bottom screw 10.COPYRIGHT: (C)2009,JPO&INPIT【課題】 脱穀装置と穀粒回収タンクを左右に並列配置するとともに、穀粒回収タンクの前側にエンジンを横向きに配置し、エンジン動力を前記穀粒回収タンクの底スクリューの前端部に伝達するよう構成したコンバインの穀粒回収部駆動構造において、エンジンを機体内方に設置して機体の左右重量バランスを好適なものにしながら、エンジンから穀粒回収タンクの底スクリューへの伝動構造を横方向にコンパクトで簡素なものにする。【解決手段】 エンジン4から機体横外方に向けて出力軸63を突設するとともに、穀粒回収タンク8の前側に中間伝動軸71を横向きに支架し、中間伝動軸71の機体内側部位とエンジン4の出力軸63とを連動連結するとともに、中間伝動軸71の機体外側部位と底スクリュー10の前端部とを連動連結してある。【選択図】 図5