PROBLEM TO BE SOLVED: To realize an emergency opening operation of a threshing chamber cover in manual threshing work.SOLUTION: A combine comprises: a front side locking device 17 that locks a front side of a threshing chamber cover 15 in a closed state a front side locking lever 27 that executes a lock operation and a lock release operation of the front side locking device 17 a rear side locking device 18 that locks a rear side of the threshing chamber cover 15 in a closed state a rear side locking lever 28 that executes a lock operation and a lock release operation of the rear side locking device 18 and an interlocking mechanism 43 that causes the rear side locking device 18 to release the lock in accordance with the lock release operation of the front side locking lever 27. The interlocking mechanism 27 comprises: a rod member 44 that transmits lock release operation force of the front side locking lever 27 to the rear side locking device 18 and an escape mechanism 45 that permits an independent operation of the rear side locking lever 28.
