PROBLEM TO BE SOLVED: To provide a thresher which can more efficiently thresh second products, when conveying the second products with a second spiral.SOLUTION: A thresher which is made by disposing a second spiral 46 integrally formed with a spiral conveying plate 62 on the outer periphery of a rotation shaft 61 extended in the conveying direction, disposing a bottom plate 66 along the lower surface of the second spiral 46, and forming an uneven surface on the conveying surface of the bottom plate 66, and whose conveying plate 62 is rotated with the rotation shaft 61 to thresh and convey the separated second products. The conveying plate 62 is provided with projections 64 projected from the outer peripheral edge of the spiral conveying plate 62 are disposed on the radial direction outside, and notched portions 68 for reducing the diameter of the conveying plate 62 are formed on the rotation direction lower sides of the projections 64.COPYRIGHT: (C)2013,JPO&INPIT【課題】二番ラセンによる二番物の搬送時に、より効率的に二番物を脱穀処理できる脱穀装置を提供することを課題としている。【解決手段】搬送方向に延びる回転軸61の外周に螺旋状の搬送板62が一体的に形成された二番ラセン46を備え、二番ラセン46の下面に沿う底板66を設け、該底板66の搬送面を凹凸形成し、回転軸61によって搬送板62を回転駆動させることにより、選別された二番物を脱穀処理しながら搬送する脱穀装置において、螺旋状の搬送板62の外周縁より径方向外側に突出する突起部64を該搬送板62に設け、突起部64の回転方向下手側に、搬送板62の径を縮小させる切欠き状部68を形成した。【選択図】図6
