PROBLEM TO BE SOLVED: To reduce the possibility of overspill of a part of discharged grains from a discharge destination such as a container when changing a grain discharge position by a maloperation or the like despite the intention of a user.SOLUTION: A combine-harvester 1 comprises: a grain tank 4 which stores grain a grain discharge auger 5 which discharges the grain in the grain tank 4 to the outside a guide plate 14 which is arranged at a discharging port 13 formed at a tip of the grain discharge auger 5 to change the discharging direction of the grain by rotation using an upper end side as a fulcrum a guide plate driving mechanism G which rotates the guide plate 14 and a controller 23 which controls the guide plate driving mechanism G. The controller 23 includes a manual mode which rotates the guide plate 14 according to operation of a manual operation tool and an automatic mode which automatically reciprocates the guide plate 14 within a prescribed range of rotation. When a prescribed operation is performed related to a grain discharge position in the automatic mode, the automatic mode is released and changed to the manual mode.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2017,JPO&INPIT【課題】誤操作などで意に反して穀粒排出位置が変更された場合に、排出された穀粒の一部がコンテナなどの排出先から溢れる可能性を低減する。【解決手段】穀粒を貯留する穀粒タンク4と、穀粒タンク4内の穀粒を機外に排出する穀粒排出オーガ5と、穀粒排出オーガ5の先端部に形成された排出口13に配置され、上端側を支点とする回動に基づいて穀粒の排出方向を変化させるガイド板14と、ガイド板14を回動させるガイド板駆動機構Gと、ガイド板駆動機構Gを制御する制御部23と、を備えるコンバイン1であって、制御部23は、手動操作具の操作に応じてガイド板14を回動させる手動モードと、ガイド板14を所定の回動範囲で自動的に往復回動させる自動モードと、を備え、自動モード時において穀粒排出位置に関係する所定の操作が行われた場合、自動モードを解除して手動モードに切り換える。【選択図】図9
