PROBLEM TO BE SOLVED: To reduce damage of side walls of an oscillation-sorting device, cleaning tools, or a driving part by preventing sorted objects from being caught between right/left side walls of an oscillation-sorting device and cleaning tools.SOLUTION: Fixed sieves (26) are arranged in parallel at predetermined intervals in a front/rear direction on a chaff sieve (17) of an oscillation-sorting device (15). A plurality of cleaning tools (30) removing sorted objects adhering to the fixed sieves (26) are arranged in parallel at predetermined intervals in a right/left direction. A driving part (34) reciprocating/moving the plurality of cleaning tools (30) integrally in the right/left direction is arranged. A control device (50) is arranged, the control device normally driving the driving part (34) when a driving load applied on the driving part (34) is within a predetermined load range and reversely driving the driving part (34) when the driving load applied on the driving part (34) reaches a larger value than the predetermined load range.SELECTED DRAWING: Figure 13COPYRIGHT: (C)2017,JPO&INPIT【課題】揺動選別装置の左右の側壁と清掃具の間における選別物の挟み込みを軽減させて、揺動選別装置の側壁、もしくは清掃具もしくは駆動部等の破損を少なくする。【解決手段】揺動選別装置(15)のチャフシーブ(17)に、前後方向に所定の間隔を隔てて並設された固定シーブ(26)を備え、固定シーブ(26)に付着した選別物を除去する複数の清掃具(30)を左右方向に所定の間隔を有して並設し、複数の清掃具(30)を一体的に左右方向に往復移動させる駆動部(34)を設け、駆動部(34)に掛かる駆動負荷が所定の負荷範囲以内の場合は駆動部(34)を正転駆動させ、駆動部(34)に掛かる駆動負荷が所定の負荷範囲よりも大きくなった場合には駆動部(34)を逆転駆動させる制御装置(50)を設ける。【選択図】 図13
