PROBLEM TO BE SOLVED: To achieve a structure of a grain recovery tank of a combined harvester improving visibility of inside by enlarging window area of a sight glass while ensuring a strength of a front wall of the tank made of a resin.SOLUTION: The grain recovery tank is formed with a tilted surface which is higher rearward, at the upper part of the front wall of the tank body 12 made of the resin, and a sight glass 18 made of a transparent resin is set in the tilted surface. The sight glass 18 is formed into a shape as expanding forward from the tilted surface.COPYRIGHT: (C)2010,JPO&INPIT【課題】透視窓の窓面積を大きくして内部の視認性を高めながら樹脂製のタンク本体の前壁の強度を確保できるコンバインの穀粒回収タンク構造を実現する。【解決手段】樹脂製のタンク本体12の前壁上部に後側ほど高くなる傾斜面を形成し、傾斜面に透明樹脂材からなる透視窓18を付設する。透視窓18を傾斜面から前方に膨出した形状に形成する。【選択図】図3
