PROBLEM TO BE SOLVED: To provide a thresher which comprises a cover body for opening and closing an upper part of a threshing chamber, and can operate the cover body so as to be promptly opened in a state that the cover body is locked in a closed state.SOLUTION: A thresher comprises: an actuator 19 for driving a cover body 18 so as to open and close the cover body a feed chain 14 for transferring grain culms rearward lock members 33A, 33B in which grip bodies 27 arranged at left and right outside portions of the cover body 18 are positioned immediately above the feed chain 14, and which lock the cover body 18 in a closed state that the grain culms in transfer are gripped and detection means 61 which detects the release of the lock of the lock members 33A, 33B by lock release levers 34A, 34B. When the release of the lock is detected by detection means 61, the cover body 18 is operated so as to be opened up to at least a grip release position in which the grip by the grip bodies 27 and the feed chain 14 is released.COPYRIGHT: (C)2015,JPO&INPIT【課題】扱室の上方を開閉させるカバー体を備え、ロック部材によって、カバー体が閉状態でロックされている状態で、カバー体を迅速に開作動させることが可能な脱穀装置を提供することを課題とする。【解決手段】カバー体18を開閉駆動させるアクチュエータ19と、穀稈を後方搬送するフィードチェーン14と、カバー体18の左右外側部分に設けられた挟持体27がフィードチェーン14の真上側に位置して搬送中の穀稈を挟持する閉状態でカバー体18をロックするロック部材33A,33Bと、ロック解除レバー34A,34Bによるロック部材33A,33Bの上記ロックの解除を検出する検出手段61とを備え、検出手段61によって上記ロックの解除を検出した場合、カバー体18を、少なくとも挟持体27及びフィードチェーン14による挟持が解除される挟持解除位置までは、開作動させる。【選択図】図13
