To provide a combine in which a thresher is compact and which facilitates maintenance work of the thresher.SOLUTION: A thresher comprises: a threshing part 5A； a selection part； an upper opening Q； an outside opening 17； a top plate 13； and an oscillation cover 14. An oscillation locus of the top plate 13 and an oscillation locus of the oscillation cover 14 overlap each other, and in a state in which, both of the upper opening Q and outside opening 17 are opened, and the top plate 13 and oscillation cover 14 do not interfere each other, a posture holding mechanism HM holds any one or both of the top plate 13 and the oscillation cover 14 in a halfway posture between a closed posture and a fully opened posture.SELECTED DRAWING: Figure 12【課題】脱穀装置がコンパクトであると共に、脱穀装置のメンテナンス作業が容易なコンバインを提供する。【解決手段】脱穀装置は、脱穀部５Ａと、選別部と、上側開口Ｑと、外側開口１７と、天板１３と、揺動カバー１４と、を有しており、天板１３の揺動軌跡と揺動カバー１４の揺動軌跡とが重複しており、上側開口Ｑ及び外側開口１７の両方が開かれた状態で、且つ、天板１３と揺動カバー１４とが互いに干渉しない状態で、天板１３及び揺動カバー１４の何れか一方または両方を、閉じ姿勢と全開姿勢との間の姿勢である中途姿勢で保持する姿勢保持機構ＨＭを備える。【選択図】図１２
