PROBLEM TO BE SOLVED: To enable quick cleaning of the inside of a rear cover of a case of a combine with little manpower in the combine which has a waste straw shredding machine for performing shredding processing on threshed waste straws that includes a driving blade body that has a plurality of cutting blades, a receiving blade body that has a plurality of receiving blades supported by a cutting axis, and the case for storing the driving blade body and the receiving blade body.SOLUTION: Removal mechanism 20 capable of removing dust that is attached to the inner surface part of a rear cover 15B is provided within a case 15.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】脱穀処理後の排ワラを切断処理する排ワラ切断装置に、駆動軸に支持された複数の切断刃を有する駆動刃体と、切断軸に支持された複数の受刃を有する受刃体と、駆動刃体及び受刃体を収容するケースと、が備えられているコンバインにおいて、ケースの後部カバー内を少ない人手によって迅速に清掃できるようにする。【解決手段】ケース１５の内部に、後部カバー１５Ｂの内面部に付着した塵埃を除去可能な除去機構２０が備えられている。【選択図】図２
