PROBLEM TO BE SOLVED: To surely remove waste straws on a chaff sieve and to improve separation efficiency.SOLUTION: The chaff sieve (17) of the shaking separator (15), which receives a threshed material from a threshing part (3), and shakes and separates the received material, is equipped with a plurality of cleaning tools (30) consisting of cleaning plates (28) arranged along the longitudinal direction at prescribed intervals in the right and left direction and sieve scrapers (29) brought into contact with each sieve (26) surface and removing extraneous matter, these several cleaning tools (30) are integrally reciprocated in the horizontal direction transversely and the movement stroke (L) of the cleaning tools is made larger than an arrangement pitch (P) between the cleaning tools.COPYRIGHT: (C)2011,JPO&INPIT【課題】チャフシーブ上の藁屑を確実に除去できるようにし、選別能率を高める。【解決手段】脱穀部(3)からの脱穀処理物を受け入れて揺動選別する揺動選別棚(15)のチャフシーブ(17)には、前後方向に沿って且つ左右方向所定間隔置きに配設した清掃プレート(28)と各シーブ(26)面に接触して付着物を除去するシーブスクレーパ(29)とからなる複数個の清掃具(30)を備え、これら数個の清掃具(30)を一体的に左右横方向へ往復移動可能に構成すると共に、該清掃具の移動ストローク(L)を各清掃具間の配置ピッチ(P)よりも大きくする。【選択図】図4
