PROBLEM TO BE SOLVED: To stabilize a posture when a reaping part is in an opened posture around a vertical support shaft.SOLUTION: In a holder member supported rotatably on a vertical support shaft erected on a travel machine body and supporting rotatably one end side of a horizontal support cylinder around an axis, a horizontal extension part is arranged which extends along the horizontal support cylinder such that a tip side reaches at least the vicinity of a center area of the horizontal support cylinder in an axial direction. On one of the horizontal support cylinder and horizontal extension part, a stopper member is arranged which can slide in the axial direction of the horizontal support cylinder. On the other, an engagement part is arranged which can be engaged with the stopper member. The stopper member or engagement part arranged on the horizontal support cylinder is arranged in the center area of the horizontal support cylinder in the axial direction.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2016,JPO&INPIT【課題】刈取部が垂直支軸回りに開放姿勢とされた際の姿勢安定化を図る。【解決手段】走行機体に立設された垂直支軸に回転可能に支持され且つ横支持筒の一端側を軸線回り回転自在に支持するホルダー部材に、先端側が少なくとも前記横支持筒の軸線方向中央領域近傍に到達するように前記横支持筒に沿って延びる横方向延在部が設けられている。前記横支持筒及び前記横方向延在部の一方に前記横支持筒の軸線方向スライド可能なストッパー部材を、他方には前記ストッパー部材が係合可能な係合部が設けられており、前記横支持筒に設けられた前記ストッパー部材又は前記係合部は前記横支持筒の軸線方向中央領域に配置されている。【選択図】図9
