Problem to be solved: to improve the durability of the pillow handling operation by operating the decontamination apparatus in an operating condition suitable for the pillow handling operation.A restriction member 26 which can be switched to a restriction state to permit supply of a grain culling manually and a regulation state regulating the supply of the grain culm, andA detection sensor that detects whether it is in a regulated or uncontrolled stateWhen the detection sensor detects the regulated condition, it becomes the operating condition for the cutting work.When the detection sensor detects the unlocking state, it becomes an operating state for pillow handling.A threshing control unit for controlling the driving speed of the threshing apparatus 4 is provided.Diagram【課題】枕扱ぎ作業の際には、枕扱ぎ作業に適した運転状態で脱穀装置を作動させることにより作業を良好に行えるようにしながら、耐久性の向上を図る。【解決手段】手動での穀稈の供給を可能にする規制解除状態と穀稈の供給を規制する規制状態とに切り換え自在な規制部材２６と、規制状態であるか規制解除状態であるかを検出する検出センサと、検出センサが規制状態を検出すると刈取作業用の運転状態になり、検出センサが規制解除状態を検出すると枕扱ぎ用の運転状態になるように、脱穀装置４の駆動速度を制御する脱穀制御部とが備えられている。【選択図】図３
