PROBLEM TO BE SOLVED: To provide a combine harvester enabled to avoid the weight increase of a grain tank easily and to make an arrangement structure compact in an oscillation drive unit for an unloader.SOLUTION: While a grain tank E is being supported by a support member 40 belonging to a self-running machine A, a combine harvester is constituted in a freely position change while rocking between a working attitude, at which the grain tank E is accommodated in the self-running machine A, and a checking attitude which transversely extends from the self-running machine A. An unloader F is constituted to change the position freely between a storage position to direct the discharge side end part upward and a discharge position to direct the discharge side end part toward the outer lateral side, and is equipped with an oscillation drive unit 60 for oscillating the unloader F up and down. The oscillation drive unit 60 is arranged over the support member 40 and the unloader F.COPYRIGHT: (C)2015,JPO&INPIT【課題】グレンタンクの重量増加を避けやすくするとともに、アンローダの揺動駆動装置における配設構造をコンパクト化する。【解決手段】グレンタンクEが自走機体Aに備えた支持体40に支持された状態で、自走機体Aに収納される作業姿勢と、自走機体Aから横方向に張り出す点検姿勢とに揺動して姿勢切換自在に構成され、アンローダFは、排出側端部を上方に向かわせる格納姿勢と、排出側端部を外側方に向かわせる排出姿勢とに姿勢切換自在に構成され、アンローダFを起伏揺動させる揺動駆動装置60が備えられ、揺動駆動装置60は、支持体40とアンローダFとにわたって配備されている。【選択図】図4
