PROBLEM TO BE SOLVED: To provide a structure for lifting and lowering reaping part of a combined harvester, performing harvesting operation at a comparatively stable height without installing an automatic reaping height regulator.SOLUTION: The structure for lifting and lowering reaping part of the combined harvester in which the reaping part 3 equipped with a raising-up device 7, a reaping device 8 and a reaped grain culm-conveying device 11 is linked to the front part of a traveling machine body 2 so as to be lifted and lowered, wherein grounding bodies 25 for receiving and supporting the reaping part 3 on the field surface at the right and left both terminals and the midpoint in the lower part of the reaping part 3 are installed.COPYRIGHT: (C)2010,JPO&INPIT【課題】刈高さ自動制御装置を備えることなく比較的安定した刈高さでの収穫作業を行うことのできるコンバインの刈取り部昇降構造を提供する。【解決手段】引起し装置7、刈取り装置8、刈取り穀稈搬送装置11を備えた刈取り部3を、走行機体2の前部に昇降可能に連結したコンバインの刈取り部昇降構造において、刈取り部3の下部における左右両端と中間とに、刈取り部3を圃場面に受け止め支持させるための接地体25を装備する。【選択図】図2
