PROBLEM TO BE SOLVED: To solve a problem in which conventionally a top cover is moved upward by an actuator when an emergency stop button is operated, however emergency foreign matter is bitten deeply.SOLUTION: A combine is configured as follows: a feed chain 13 is provided for supplying the grain culm reaped with a reaping device 4 in front of a machine body to a threshing chamber 16 of a threshing device 3 a guide rail 34 is supported to the outside in a freely turning manner by a fulcrum of a vertical direction provided in the front part a locking mechanism 40 for locking the turning of the feed chain 13 is provided in a predetermined position of the rear of the guide rail 34 a pinching bar 17 is installed in the top cover 20 side a top cover 20 is installed in the threshing device 3 side in an openable/closable manner and is configured to be locked in a closed state by a locking device 24 an emergency stop button 33 for stopping the drive of the feed chain 13 is provided in a predetermined position of the machine body and the unlocking motor 31 operates by the operation of the emergency stop button 33 to unlock the locking mechanism 40 and the locking device 24.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】従来、緊急停止ボタンを操作すると、アクチュエータにより上部カバーを上動させるが、緊急時の異物を深く噛み込む課題がある。【解決手段】機体前方の刈取装置4で刈り取った穀稈を脱穀装置3の扱室16に供給するフィードチェン13を設け、案内レール34は前部に有した上下方向の支点により外側へ回動自在に支持し、案内レール34の後部所定位置にはフィードチェン13の回動をロックするロック機構40を設け、挾扼杆17は上部カバー20側に取付け、上部カバー20は脱穀装置3側に開閉自在に取付けると共にロック装置24により閉鎖状態でロックするように構成し、機体所定位置にはフィードチェン13の駆動を停止させる緊急停止ボタン33を設け、緊急停止ボタン33の操作によりロック解除モータ31が作動しロック機構40およびロック装置24がロック解除される構成としたコンバイン。【選択図】 図4