PROBLEM TO BE SOLVED: To provide a threshing device in whidh a feed chain instantly stops on its emergency stop.SOLUTION: This threshing device is constituted by including a forward-rotating driving system feeding a power to the feed chain 1 in its transporting direction at threshing time, and a reverse-rotating driving system feeding the power to the feed chain 1 in the opposite direction of the transporting direction at the threshing time, feeding the power by the forward-rotating driving system to the feed chain 1 in the state of cutting off the feed of the power by the reverse-rotating system at the threshing time and feeding the power by the reverse-rotating driving system to the feed chain 1 to stop the feed chain 1, or driving the feed chain in the opposite direction to the transporting direction when threshing while resisting to the power by the forward-rotating driving system in the state of cutting off the feed of the power by the forward-rotating driving system, or without cutting off the feed of the power by the forward-rotating driving system at the emergency-stopping time.COPYRIGHT: (C)2012,JPO&INPIT【課題】緊急停止の際にフィードチェンが即時停止する脱穀装置を提供する。【解決手段】フィードチェン1に対して脱穀時移送方向の動力を供給する正転駆動系と、フィードチェン1に対して脱穀時移送方向とは反対向きの動力を供給する逆転駆動系とを備え、脱穀時には、逆転駆動系による動力の供給を切った状態で、正転駆動系による動力をフィードチェン1に供給し、緊急停止時には正転駆動系による動力の供給を切った状態で又は正転駆動系による動力の供給を切らずにその動力に抗して、逆転駆動系による動力をフィードチェン1に供給してフィードチェン1を停止させる又は脱穀時移送方向とは反対向きに駆動する構成とする。【選択図】図6