PROBLEM TO BE SOLVED: To provide a combine harvester that regulates the cutting timing of grain stalks by a cutting device in a cutting part and smoothly conveys grain stalks by a conveying device when cutting grain stalks.SOLUTION: The combine harvester includes the cutting device 23 provided at the cutting part, which is configured to include disk-shaped cutting blades 231D for cutting grain stalks at a plant foot side, a drive actuator 233 for rotating and driving the cutting blades 231D, a drive case 234 that supports the cutting blades 231D and the drive actuator 233 and associates and connects them through a transmission mechanism arranged inside and moving means 250 that moves the cutting blades 231D to a raising device side or a threshing part side relatively to the body of the cutting part and is retained at any position relatively to the body of the cutting part.COPYRIGHT: (C)2010,JPO&INPIT【課題】刈取部において、切断装置での穀稈の切断タイミングを調節して、穀稈の切断時に、搬送装置による穀稈の搬送を円滑に行うことができるコンバインを提供する。【解決手段】コンバインにおいて、刈取部に備える切断装置23に、穀稈を株元側で切断する円盤形状の切断刃231Dと、切断刃231Dを回転駆動させる駆動アクチュエータ233と、切断刃231Dと駆動アクチュエータ233とを支持して、これらを内部に有する伝動機構を介して連動連結する駆動ケース234と、切断刃231Dを刈取部本体に対して引起装置側または脱穀部側に移動可能とするとともに、この刈取部本体に対して任意位置に保持可能とする移動手段250とを備える。【選択図】図4
