PROBLEM TO BE SOLVED: To provide a combine harvester which secures an elevation position of a reaping device even when the height of the harvester is adjusted to a lower position.SOLUTION: The combine harvester includes: a travelling device 3 which supports the body frame 1a whose height is adjusted by the harvester height adjustment part 11 and a reaping device 4 which reaps grain culms and whose height is adjusted by the reaping device hoisting part 14 of the front part of the body frame 1a. The combine harvester also includes: a harvester height detection part 11s which detects the height adjusted by the harvester height adjustment part 11 a reaping height detection part 14s which detects the height hoisted by the reaping device hoisting part 14 and a controlling part C which controls the operation of the harvester height adjustment part 11 and the reaping device hoisting part 14. If either starting of output of a lowering output signal to the harvester height adjustment part 11 or the downward change of the height by the harvester height detection part 11s is detected, and if the height of the reaping device detected by the reaping height detection part 14s is found lower than the set value, the controlling part C is to give a rising output signal to the reaping device hoisting part 14 until the value detected by the reaping height detection part 14s becomes equal to or more than the set value.COPYRIGHT: (C)2012,JPO&INPIT【課題】車高が低下調節がされた場合にも刈取装置の高さ位置を確保できるコンバインを提供する。【解決手段】コンバインは、車高調節部11を介して機体フレーム1aを高さ調節可能に支持する走行装置3と、機体フレーム1aの前部の刈取昇降部14を介して昇降調節可能に穀稈を刈取る刈取装置4とを備えて構成され、車高調節部11による調節高さを検出する車高検出部11sと、刈取昇降部14による昇降高さを検出する刈取昇降検出部14sと、前記車高調節部11及び刈取昇降部14の動作を制御する制御部Cとを設け、該制御部Cは、前記車高調節部11への下降出力の開始と前記車高検出部11sによる下降側への高さ変化とのうちの何れかが検出され、且つ、刈取昇降検出部14sによる高さが設定値未満となった場合に、前記刈取昇降検出部14sの検出値が設定値以上となるまで前記刈取昇降部14に上昇出力を行なう構成としたものである。【選択図】図4
