PROBLEM TO BE SOLVED: To increase the capacity of a grain tank by reducing the size of a discharge auger derricking drive mechanism derricking a discharge auger in the upper end of a vertically feeding auger.SOLUTION: In a grain discharge auger derricking drive mechanism for a grain tank, a connection cylinder 50 communicating a vertically feeding auger 13 and a discharge auger 14 is connected to a vertically feeding auger side connection cylinder 50a such that a discharge auger side connection cylinder 50b can vertically turn, a turning gear 41 is fixed to one of the vertically feeding auger side connection cylinder 50a and the discharge auger side connection cylinder 50b, an electric motor 43 wherein a drive gear 42 meshing with the turning gear 41 is fixed to an output shaft is installed to the other, and the discharge auger 14 is derricked by a drive force of the electric motor 43. The grain discharge auger derricking drive mechanism is provided with an uprise energizing implement (44) energizing an auger cylinder (14c) to the uprise direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】縦送りオーガの上端で排出オーガを起伏する排出オーガ起伏駆動機構を小さくして、グレンタンクの容量を大きく出来るようにする。【解決手段】縦送りオーガ13と排出オーガ14を連通する連結筒50を縦送りオーガ側連結筒50aに対して排出オーガ側連結筒50bを垂直回動可能に連結構成し、縦送りオーガ側連結筒50aか排出オーガ側連結筒50bのどちらか一方に回動ギヤ41を固着すると共に他方に該回動ギヤ41に噛み合う駆動ギヤ42を出力軸に固着した電動モータ43を取り付け、該電動モータ43の駆動力で排出オーガ14を起伏すべくしたことを特徴とするグレンタンクの穀粒排出オーガ起伏駆動機構とする。また、オーガ筒(14c)を起立方向へ付勢する起立付勢具(44)を設ける。【選択図】図6
