PROBLEM TO BE SOLVED: To hold an unloader in swinging attitude stably, while switching the unloader from housed attitude to unloading attitude.SOLUTION: The attitude-maintaining mechanism J for maintaining the swinging attitude of the unloader F is constituted by including a linking rod 80 supported at any one of a grain tank E side and the unloader F side as freely swingable, and an engaging member 74 provided in the other of the grain tank E side or unloader F side, and providing an automatic engaging portion 75 engaging with the end part of the linking rod 80 in the swinging attitude while switching the unloader F from the housed attitude to the unloading attitude by swinging the unloader F around a swinging axis X, at the engaging member 74 for maintaining the swinging attitude of the unloader F.COPYRIGHT: (C)2013,JPO&INPIT【課題】アンローダを、格納姿勢から排出姿勢に切り換える途中の揺動姿勢に安定して保持すること。【解決手段】アンローダFの揺動姿勢を維持する姿勢維持機構Jが、グレンタンクE側又はアンローダF側のいずれか一方に揺動自在に支持される連結ロッド80と、グレンタンクE側又はアンローダF側の他方に設けられる係合部材74とを備えて構成されており、アンローダFを揺動軸芯X周りに揺動させて格納姿勢から排出姿勢に切り換える途中の揺動姿勢において連結ロッド80の端部が係合する自動係合部75を係合部材74に設け、アンローダFの揺動姿勢を維持する。【選択図】図10
