PROBLEM TO BE SOLVED: To provide a combine harvester so designed that ear tips conveyance posture is corrected so as not to delay or go forward toward the entrance of a threshing chamber in making a following reaping and/or facing reaping of fallen grain culms by the combine harvester.SOLUTION: The combine harvester has the following construction. At a midway part of a transmission mechanism functioning to transmit the mechanical power from an engine loaded on the combine harvester to a reaping pretreatment apparatus, a mechanical power branching part 45 is provided for functioning to transmit mechanical power to an upper conveying postmechanism 30 and an auxiliary conveying mechanism 31a for conveying ear tip side toward the entrance of a threshing chamber, and on the transmission downstream side of the mechanical power branching part 45, a planet gear mechanism 57 and an electric motor 58 as variable-speed control means are provided, and an operator conducts a manual control operation using a dial set on a main speed-variable lever.COPYRIGHT: (C)2009,JPO&INPIT【課題】コンバインによる倒伏穀稈の追い刈りや向かい刈りの場合に、扱室の入口側への穂先部の搬送姿勢が遅れたり、先走るのを修正する。【解決手段】コンバインに搭載したエンジンからの動力を刈取前処理装置に伝達する伝動機構の中途部に、扱室の入口側への穂先側を搬送するための上部搬送後機構30及び補助搬送機構31aとに動力伝達する動力分岐部45を備え、動力分岐部45の伝動下流側には、変速調節可能な速度調節手段としての遊星歯車機構57及び電動モータ58をそなえて、主変速レバーに設けられたダイヤルによりオペレータが手動調節操作する。【選択図】図6
