PROBLEM TO BE SOLVED: To improve a grain selecting function of a grain separation shelf in a thresher of a combine-harvester, thereby to improve a grain harvesting percentage.SOLUTION: In a threshing apparatus 3 for a combine-harvester, a handling trunk 21 is born in the longitudinal direction of a threshing chamber 20, a handling net 22 is disposed to enclose the lower portion of the handling trunk 21 arcuately, and a rocking selection shelf 26 for receiving a selecting wind from a fan 23 is disposed in the lower portion of said handling net 22, a plurality of inducing inclined plates 60a and 60b having downward sloping guide inclinations from the right and left sides to the center are interposed between the handling net 22 and the rocking selection shelf 26.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】本発明は、コンバインの脱穀装置における揺動選別棚での穀粒選別機能を改良して穀粒収穫率を向上することを課題とする。【解決手段】脱穀室20の前後方向に扱胴21を軸架し、扱胴21の下部を弧状に囲って扱網22を設け、該扱網22の下部に唐箕23から選別風を受ける揺動選別棚26を設けた脱穀装置3において、扱網22と揺動選別棚26の間に、左右側方から中央に向かう下り傾斜の誘導受面を有する誘導傾斜板60a,60bを複数設けたことを特徴とするコンバインの脱穀装置とする。【選択図】図4