PROBLEM TO BE SOLVED: To solve the problem that it is difficult to cleanly finish discharged and scattered chaff, because the scattered discharged chaff is often jumped in an adjacent field beyond a ridge, when a combine harvest is traveled and worked in a place having the ridge on the ear tip side, namely along the ridge and discharges chaff cut with a chaff-cutting and discharging cutter, while the cut discharged chaff discharged and scattered with the chaff cutter of the combine harvester are ordinarily widely scattered and discharged on a field on the travel width ear tip side of the combine harvester.SOLUTION: In the chaff cutter of the combine harvester, a raking guide plate 7 under a scattering rotor 6 is formed in a state capable of being changed from a backward scattering discharging attitude position B of a backward raking guide along the lower side of the scattering rotor 6 into such an immediately downward discharging attitude position A that the backward raking guide is moved to aforward downward retracted position to release the raked discharged chaff in the immediately downward direction by the scattering rotor 6.COPYRIGHT: (C)2013,JPO&INPIT【課題】コンバインの排稈カッタで拡散排出される切断排稈は、コンバインの走行幅の穂先側寄り域へ広く拡散させて排出させるのが通常であるが、このコンバイン作業が、穂先側に畦畔のある場所、即ち畦際に沿って走行しながら、排稈カッタで切断した排稈を排出させる場合に、この拡散排出する排稈が、畦畔を越えて隣接地に飛び込むことが多く、排稈拡散をきれいに仕上げることが難しい。【解決手段】拡散ロータ6下側の掻出案内板7を、この拡散ロータ6の下側に沿う後方掻出案内の後方拡散排出姿勢位置Bから前側下方へ垂下の退避位置へ移動させて、前記拡散ロータ6による掻出排稈を直下方向へ放出させるように直下排出姿勢位置Aへ切替可能に構成したことを特徴とするコンバインの排稈カッタの構成とする。【選択図】図1
