PROBLEM TO BE SOLVED: To provide a grain transportation auger of a combine harvester which, while removing the dust of rachis-branches and the like by a dust discharging means set up in the midway part of the horizontal cylinder auger to discharge the dust in the grain stored in a grain tank outside the machine, prevents mixing of the dust into a grain container by discharging the dust outside the container.SOLUTION: In a grain transportation auger of a combine harvester which, when a grain culm mown in a pretreatment part is threshed by a thresh part and the grain which is threshed to store in a grain tank is discharged from a grain conveyance auger, the grain is discharged from the grain outlet 7a outside the machine, while discharging the dust by a dust discharge means 10 installed in the transverse cylinder auger 7 of the grain conveyance auger, a dust discharge means 10 to dispose in tension a dust leakage net 17 of mesh which leaks and discharges the dust, such as rachis-branches and waste straws, while regulating leakage of grain, is installed in the midway part of a cylinder length of the transverse cylinder auger 7.COPYRIGHT: (C)2013,JPO&INPIT【課題】グレンタンクに貯留される穀粒を、横筒オーガの中途部に設置した塵埃排出手段によって枝梗等の塵埃を除去し機外に排出すると共に、塵埃を容器の外方に排出して穀粒容器への混入を防止するコンバインの穀粒搬送オーガを提供する。【解決手段】前処理部で刈取られた穀稈を脱穀部によって脱穀し、脱穀されてグレンタンクに貯留した穀粒を穀粒搬送オーガから排出するに、穀粒搬送オーガの横筒オーガ7に設置される塵埃排出手段10によって塵埃を排出しながら穀粒排出口7aから機外に排出するコンバインの穀粒搬送オーガであって、前記横筒オーガ7の円筒長さの中途部に、穀粒の漏下を規制しながら枝梗や藁屑等の塵埃を漏下排出する目合いの塵埃漏下網17を張設してなる塵埃排出手段10を設置した。【選択図】図3
