PROBLEM TO BE SOLVED: To achieve smooth return to work after work of removing accumulated matter on a reaping blade such as soil or waste straw.SOLUTION: A combine includes: a reaping blade device 15 including an upper blade 25 and lower blade 23 an accumulated matter detection sensor 37 detecting accumulated matter accumulated on the reaping blade device 15 and a control unit 40 outputting a signal changing the reaping blade device 15 from a work posture (1) to a non-work posture (2) based on accumulated matter detection information by the accumulated matter detection sensor 37. In the work posture (1), a driving part 28a and driven part 25a are engaged with each other into a transmission possible state, and in the non-work posture, the driving part 28a and driven part 25a are separated from each other into a non-transmission state. Clutch means turning on/off transmission to the driving part 28a is arranged. The control unit 40 includes clutch control means keeping transmission by the clutch means in an off state from start of outputting to the reaping blade device 15 into the non-work posture (2) to return into the work posture (1).SELECTED DRAWING: Figure 6COPYRIGHT: (C)2018,JPO&INPIT【課題】刈刃上の土や藁屑等の堆積物の除去作業後の円滑な作業復帰を図る。【解決手段】 上刃25及び下刃23を有した刈刃装置15と、前記刈刃装置15上に堆積する堆積物を検知する堆積物検知センサ37と、この堆積物検知センサ37による堆積物検知情報に基づいて、前記刈刃装置15を作業姿勢(イ)から非作業姿勢(ロ)に変更する信号を出力する制御部40を備え、前記作業姿勢(イ)において駆動部28aと被動部25aを係合して伝動可能状態とし、前記非作業姿勢(ロ)において駆動部28aと被動部25aを離脱して非伝動状態とするよう構成し、前記駆動部28aへの伝動を入り切りするクラッチ手段を設け、前記制御部40に、前記刈刃装置15に対する前記非作業姿勢(ロ)への出力開始から前記作業姿勢(イ)へ復帰するまでの間、前記クラッチ手段による伝動を切り状態に維持するクラッチ制御手段を備えた。【選択図】 図6
