PROBLEM TO BE SOLVED: To avoid disadvantage such as breakage by use in a short period without inviting a large weight and an increased cost of grain conveyance means conveying grains.SOLUTION: A combine includes: a horizontally feeding screw conveyor 31 driven to be rotated around a horizontal axis along a bottom part of a grain presence space and horizontally feeding and conveying grains and a vertical conveyance device 32 conveying the grains transferred from a conveyance end of the horizontally feeding screw conveyor in a direction crossing a conveyance direction of the horizontally feeding screw conveyor 31. The horizontally feeding screw conveyor 31 includes: a rotation shaft 39 rotated around the horizontal axis a screw blade 40 weld-fixed on an outer periphery of the rotation shaft and a cylindrical member 55 externally fitted to the rotation shaft 39 at a position corresponding to an edge position of the screw blade 40 on a conveyance direction downstream side. An edge portion of the screw blade 40 on the conveyance direction downstream side is weld-fixed on an outer periphery of the cylindrical member 55.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】穀粒を搬送する穀粒搬送手段が、大重量化したりコスト高を招くことなく、短期間の使用で損傷する等の不利を回避する。【解決手段】穀粒存在空間の底部に沿う横軸心まわりで駆動回転され、穀粒を横送り搬送する横送りスクリューコンベア31と、その搬送終端部から受け渡される穀粒を横送りスクリューコンベア31の搬送方向と交差する方向に搬送する縦向き搬送装置32とを備え、横送りスクリューコンベア31は、横軸心まわりで回転する回転軸39と、その外周に溶接固定されたスクリュー羽根40と、スクリュー羽根40の搬送方向下手側の端部位置に対応する箇所において回転軸39に外挿される筒状部材55とを備え、スクリュー羽根40の搬送方向下手側端部箇所が筒状部材55の外周に溶接固定されている。【選択図】図3
