PROBLEM TO BE SOLVED: To provide a swing selector of a thresher in which a first sieve equipped with a scraper restricts a leaked amount of a treated material from gaps between sieve plates downward and suppresses adhesion of waste straws on the surfaces of the sieve plates so as to reduce an operation load of the scraper, to enhance a removal action on an attachment and to improve threshing operation efficiency.SOLUTION: The swing selector of a thresher is equipped with a transfer rack (16) for receiving, swinging and transferring a threshed material from a threshing chamber (2), a first sieve (17) furnished with the scraper (30) that is reciprocatingly moved in the horizontal direction along the surfaces the sieve plates (26) connected to the transfer end part of the transfer rack (16) and a second sieve (18) that is continued to the transfer end part of the first sieve (17). Backward bending guide pieces (26a) are formed at the upper end sides of the sieve plates (26) of the first sieve (17) and forward bending guide pieces (27a) are formed at the lower end sides of the sieve plates (27) of the second sieve (18).COPYRIGHT: (C)2012,JPO&INPIT【課題】スクレーパを備えた第1シーブでは、各シーブ板間から下方への処理物の漏下量を制限し、また、シーブ板表面へのワラ屑の付着を抑制することによってスクレーパの作動負担を軽減し、付着物の除去作用を高めて、脱穀作業の能率を向上させる。【解決手段】扱室(2)からの脱穀処理物を受け入れて揺動移送する移送棚(16)と、該移送棚(16)の移送終端部に連設されたシーブ板(26)の表面に沿って左右方向に往復移動するスクレーパ(30)を備えた第1シーブ(17)と、該第1シーブ(17)の移送終端部に連続する傾斜角度変更可能な第2シーブ(18)とを備え、第1シーブ(17)のシーブ板(26)の上端側に後向きの折曲案内片(26a)を形成して設け、第2シーブ(18)のシーブ板(27)の下端側には前向きの折曲案内片(27a)を形成する。【選択図】 図2
