PROBLEM TO BE SOLVED: To easily open and close a lid part for closing an inspection port of a recovery part of an object to be processed. SOLUTION: The threshing device has an inspection port 61 formed below the lateral feed screw 26 in the bottom part 31, a lid part 71 for covering the inspection port 61, and a lock operation tool 81, and operation of the lock operation tool 81. A lock mechanism 80 capable of switching between a locked state for fixing the lid portion 71 to the closed position and a released state for releasing the locked state by the lid portion 71 is parallel to the axis X of the lateral feed screw 26. It is cantilevered by the support shaft portion 36 so as to be able to swing up and down around the support shaft portion 36, and swings downward to open the inspection opening 61, and swings upward to open the inspection opening 61. Can be switched between a closed position and a closed position, and the lock mechanism can switch between the locked state and the unlocked state by moving the lid 71 along the axis X direction by operating the lock operation tool 81. Is configured. [Selection diagram] Fig. 10【課題】被処理物の回収部の点検口を閉鎖する蓋部を容易に開閉可能にする。【解決手段】 脱穀装置の底部３１において横送りスクリュー２６の下方に形成された点検口６１と、点検口６１を覆う蓋部７１と、ロック操作具８１を有し、当該ロック操作具８１の操作によって蓋部７１を閉位置に固定するロック状態と、ロック状態を解除する解除状態とに切替え可能なロック機構８０と、を備え、蓋部７１は、横送りスクリュー２６の軸芯Ｘに平行な支軸部３６周りに上下揺動可能なように支軸部３６に片持ち支持され、且つ、下方に揺動して点検口６１を開放する開位置と、上方に揺動して点検口６１を閉鎖する閉位置と、に切替え可能であり、ロック機構は、ロック操作具８１の操作により蓋部７１を軸芯Ｘ方向に沿って移動させることで、ロック状態と解除状態とが切替えられるように構成されている。【選択図】図１０
