PROBLEM TO BE SOLVED: To improve efficiency in sorting grains by a swing sorting shelf in a thresher equipped with a fourth treatment chamber behind a threshing chamber.SOLUTION: A swing sorting shelf (25) includes a transfer shelf (27) receiving a treated material from a threshing chamber (3) and transferring it backward a sieve (28) having a plurality of sieve plates (40) inclining upward to the rear, arranged at predetermined spaces in a longitudinal direction, and taking over the treated material on the transfer shelf (27) to sieve and sort the treated material and a straw rack (29) taking over the treated material on the sieve (28) to sieve and sort the treated material. The front end of the sieve (28) is disposed below a fourth treatment chamber (9). The upper face of the transfer shelf (27) is formed in a smooth surface. The transfer shelf (27) includes a first transfer shelf (27a), and a second transfer shelf (27b) arranged on the rear side of the first transfer shelf (27a). The second transfer shelf (27b) is formed with a plurality of filtration holes (39) larger than the grain diameter of grains.COPYRIGHT: (C)2013,JPO&INPIT【課題】扱室の後方に4番処理室を備える脱穀装置において、揺動選別棚による穀粒選別効率を向上させる。【解決手段】揺動選別棚(25)には、扱室(3)からの被処理物を受け入れて後方に移送する移送棚(27)と、後上りに傾斜する複数のシーブ板(40)を前後方向に所定間隔を置いて配置して移送棚(27)上の被処理物を引き継いで篩い選別するシーブ(28)と、シーブ(28)上の被処理物を引き継いで篩い選別するストローラック(29)を備え、シーブ(28)の前端部を4番処理室(9)の下方に配置する。また、移送棚(27)の上面を、平滑な面に形成する。また、移送棚(27)を、第1移送棚(27a)と、第1移送棚(27a)の後側に配置された第2移送棚(27b)から構成し、第2移送棚(27b)には穀粒の粒径よりも大きい複数の濾過孔(39)を形成する。【選択図】 図2
