PROBLEM TO BE SOLVED: To reduce size and cost of an electric motor so as to well perform the vertical position change of a grain stalk-receiving body.SOLUTION: This combine harvester includes a single electric motor performing a switch operation of posture of the grain stalk-receiving body to a support-acting position and a support-releasing position, is configured so that the grain stalk-receiving body is operated to the support-releasing position by accompanying the one directional rotating action of the electric motor and the grain stalk-receiving body is operated to the support-acting position by the reverse directional rotating action power of the electric motor based on a command of an action command-operating tool outputting the action command to the electric motor, and includes an assist mechanism 60 configured so that the power is accumulated by the one directional rotating action power of the electric motor, and the accumulated power is released as an operational power to the side for lifting up the grain stalk-receiving body accompanying the reverse directional rotation of the electric motor.COPYRIGHT: (C)2012,JPO&INPIT【課題】穀稈受け止め体の上下位置変更を良好に行えるように、電動モータの小型化ならびに低コスト化を図る。【解決手段】穀稈受け止め体の姿勢を支持作用位置と支持解除位置との何れかに切換操作する単一の電動モータを備え、その電動モータに対して作動指令を出力する作動指令操作具の指令に基づいて、電動モータの一方向の回転作動にともなって穀稈受け止め体が支持解除位置に操作され、電動モータの逆方向の回転作動力によって穀稈受け止め体が支持作用位置に操作されるように構成してあり、電動モータの一方向の回動作動力によって力が蓄積され、電動モータの逆方向の回動にともなって穀稈受け止め体を持ち上げる側への操作力として蓄積された力を放出するように構成したアシスト機構60を備えた。【選択図】図10
