PROBLEM TO BE SOLVED: To enable performing the operation of clutches for a reaping transmission mechanism and a cereal grain-conveying out simply and lightly in addition to the control of On and Off of the clutches of a reaping/threshing system by utilizing an operation mechanism driven by an electric motor, and also aim at the simplification of its structure as much as possible.SOLUTION: In this operation device of a combine harvester, at a first operation mechanism 8 driven by a first electric motor, a threshing operation position where the threshing clutch 40 is On and the reaping clutch 30 is Off and a reaping/threshing operation position where both of the threshing clutch 40 and reaping clutch 30 are On, are set in the operation range of one directional side from a neutral position that the reaping clutch 30 and threshing clutch 40 become a cut off state, and at a second operation mechanism 9 driven by a second electric motor, a cereal grain-conveying out position for On-operating the cereal grain-conveying out crutch 50, is set in the operation range of a reverse side to the operation range of operating the reaping transmission device 15 by nipping the neutral position.COPYRIGHT: (C)2010,JPO&INPIT【課題】電動モータで駆動される操作機構を利用して、刈取脱穀系のクラッチの入り切り制御に加え、刈取変速機構や穀粒搬出用クラッチの操作をも簡単に、かつ軽快に行えるようにするとともに、極力構造の簡素化も図る。【解決手段】第1電動モータで駆動される第1操作機構8では、前記刈取クラッチ30及び脱穀クラッチ40が切り状態となる中立位置から一方向側の操作域に、脱穀クラッチ40がクラッチ入りで刈取クラッチ30がクラッチ切りである脱穀操作位置と、脱穀クラッチ40と刈取クラッチ30が共にクラッチ入りとなる刈取脱穀操作位置を設定してあり、第2電動モータで駆動される第2操作機構9では、刈取変速装置15を操作する操作域とは中立位置を挟んで反対側の操作域に、穀粒搬出用クラッチ50を入り操作する穀粒搬出位置を設定してある。【選択図】図17
