PROBLEM TO BE SOLVED: To solve the problem that a reaping clutch in a transmission box complicates a transmission structure and makes it difficult to dispose an output shaft for driving an outer equipment in the transmission box.SOLUTION: This combine harvester has a travel apparatus 2 which is continuously variably driven, a reaping portion 4 synchronized with the travel speed of the travel apparatus 2, and a front-side grain straw-feeding and conveying device 16 disposed in parallel on the front-side of a grain-feeding and conveying device 15 of a thresher 3. The front-side grain straw-feeding and conveying device 16 can be driven in two driving systems comprising a transmission route ranging from a mission case 81 to the reaping portion 4 and a transmission route ranging from a transmission gear box 26 to the reaping portion 4. A reaping clutch 87 for transmitting rotations from a mission case 81 to the reaping portion 4 is disposed between the reaping portion 4 and a variable speed output shaft 86, and a raking clutch 89 for transmitting rotations from the front-side grain straw-feeding and conveying device 16 to the reaping portion 4 is disposed between the transmission gear box 26 and the front-side grain straw-feeding and conveying device 16.COPYRIGHT: (C)2008,JPO&INPIT【課題】伝動ボックスの内部の刈取クラッチは伝動構造を複雑化させ、又、伝動ボックスに外部機器を駆動する出力軸を設けることが難しい。【解決手段】コンバインは、無段変速駆動される走行装置2と、走行装置2の走行速度に同調させた刈取部4と、脱穀装置3の穀稈供給搬送装置15の前側に並設した前側穀稈供給搬送装置16とを有する。前側穀稈供給搬送装置16は、ミッションケース81から刈取部4に至る伝動経路と、伝動ギヤボックス26から刈取部4に至る伝動経路との二系統で駆動できる。刈取部4と変速出力軸86との間にはミッションケース81からの回転を刈取部4に伝達する刈取クラッチ87を設け、伝動ギヤボックス26と前側穀稈供給搬送装置16との間には前側穀稈供給搬送装置16からの回転を刈取部4に伝達する掻込クラッチ89を設ける。【選択図】図4
