PROBLEM TO BE SOLVED: To provide a conduit structure not requiring motion spaces of lid members under the base parts of conduit bodies.SOLUTION: The conduit structure 600 arranged under a swinging and separating mechanism 210 so as to collect grains separated by the swinging and separating mechanism 210 is equipped with side view V-shaped conduit bodies 611 and 612 having forward-side tilted plates 411 and 461 and backward-side tilted plates 412 and 462 and providing openings h1 and h2 at the base parts P1 and P2 and lid members 621 and 622 selectively closing or opening the openings h1 and h2 based on external manipulation, and the lid members 621 and 622 are made turnable around nearly vertical pivot shafts Q1 and Q2 between a close position for closing the openings h1 and h2 and an open position for opening openings h1 and h2.COPYRIGHT: (C)2008,JPO&INPIT【課題】樋本体の底部の下方に前記蓋部材の動作スペースを設ける必要の無い樋構造を提供する。【解決手段】揺動選別機構210によって選別された穀粒を集約させ得るように前記揺動選別機構210の下方に配置される樋構造600は、前方側傾斜板411,461及び後方側傾斜板412,462を有し、底部P1,P2に開口h1,h2が設けられた側面視V字状の樋本体611,612と、外部操作に基づき開口h1,h2を選択的に閉塞又は開放する蓋部材621,622とを備え、蓋部材621,622は、開口h1,h2を閉塞する閉塞位置と開口h1,h2を開放する開放位置との間で略垂直な枢支軸Q1,Q2回り回動可能とされている。【選択図】図7
