PROBLEM TO BE SOLVED: To reduce the volume of displacement of an engine to reduce cost, and to suppress fuel consumption by preventing insufficient power momentarily caused at a pre-treating part.SOLUTION: A combine harvester 1 is equipped with a traveling power transmission route 14 for transmitting the power of the engine E through a traveling transmission (an infinite variable-speed drive 11 for traveling and a transmission case 12) to a traveling part 7, and a pre-treating power transmission route 15 for transmitting the power taken out of the traveling power transmission route 14, and drivably connected to the car speed to the pre-treating part 2. An electric assistant motor 17 for assisting the driving of the pre-treating part 2 is installed in the pre-treating power transmission route 15.COPYRIGHT: (C)2010,JPO&INPIT【課題】前処理部の瞬間的な動力不足を防ぐことにより、エンジンの排気量を小さくしてコストダウンを図ると共に、燃料消費量を抑える。【解決手段】エンジンEの動力を走行変速装置(走行用無段変速装置11及びミッションケース12)を介して走行部7に伝動する走行動力伝動経路14と、走行動力伝動経路14から取り出した車速連動の動力を前処理部2に伝動する前処理動力伝動経路15とを備えるコンバイン1であって、前処理動力伝動経路15中に、前処理部2の駆動をアシストする電動アシストモータ17を設ける。【選択図】図3
