PROBLEM TO BE SOLVED: To easily mount a fixing means for freely demountably fixing a raising implement in a grass dividing frame without disturbing lifting of the raising implement by a reaping height detector.SOLUTION: A combine harvester is freely liftably and lowerably provided with a reaping pretreatment part around the transverse shaft center of a machine body at the front of the traveling machine body. A curved frame part 18a is composed by curving a grass dividing frame part located near the rear of the lower part of the raising implement 27 upward, and the reaping height detector 37 is disposed in a lower space S2 of the curved frame part 18a. The raising implement 27 located on the front side of the reaping height detector 37 in the plurality of raising implements is composed so as to be liftable around the right and left transverse shaft center in the upper part. Furthermore, a fixing means 53 for freely detachably fixing the lower part of the raising implement 27 on the curved frame part 18a is provided.COPYRIGHT: (C)2011,JPO&INPIT【課題】本発明は、刈高検出装置が引起し装置の持ち上げに邪魔にならず、引起し装置を分草フレームに着脱自在に固定する固定手段の取り付けを容易に行えるようにする。【解決手段】走行機体の前部に機体横軸心周りに昇降自在に刈取前処理部を備え、引起し装置27の下部部分の後方近くに位置する分草フレーム部分を上方に湾曲させて湾曲フレーム部分18aを構成し、湾曲フレーム部分18aの下方空間S2に刈高検出装置37を配設し、複数の引起し装置のうちの刈高検出装置37の前側に位置する引起し装置27を、上部の左右横軸心周りで持ち上げ可能に構成するとともに、当該引起し装置27の下部を湾曲フレーム部分18aに着脱自在に固定する固定手段53を備えてある。【選択図】図13
