PROBLEM TO BE SOLVED: To solve a problem that a feed chain transfer speed in a prior art is synchronized with a vehicle speed, however, a layer thickness of a treated object becomes unstable on an oscillation sorting shelf due to a reason of a characteristic or the like of a grain culm, and sorting accuracy and efficiency are lowered.SOLUTION: In a combine, a feed chain 13 which is steplessly gear-changed and driven by a transfer continuously variable transmission 40 is arranged, a wind sorting chamber 18 which performs wind-sorting by air blown from a fan 16 is arranged in a lower part of a handling chamber 11 which supplies the grain culm by the feed chain 13, a reciprocally-oscillating oscillation sorting shelf 20 is arranged at the wind sorting chamber 18, a layer thickness sensor 41 which detects a thickness of a layer of a treated object on the oscillation sorting shelf 20 is arranged in an upper part of a prescribed position of the oscillation sorting shelf 20, a transfer speed of the feed change 13 is changed while following a vehicle speed by the transfer continuously variable transmission 40, and the transfer speed of the feed chain 13 by the transfer continuously variable transmission 40 is controlled to be increased or decreased according to a detection value of the layer thickness sensor 41.COPYRIGHT: (C)2015,JPO&INPIT【課題】従来ではフィードチェンの搬送速度を車速に同調させていたが、穀稈の性状等の理由により、揺動選別棚上に被処理物の層厚が不定となって選別精度および効率が低下するという課題がある。【解決手段】搬送用無段変速装置40により無段階に変速して駆動されるフィードチェン13を設け、該フィードチェン13により穀稈を供給する扱室11の下方に、唐箕16からの送風により風選する風選室18を設け、該風選室18に往復揺動する揺動選別棚20を設け、該揺動選別棚20の所定位置上方に、揺動選別棚20上の被処理物の層の厚さを検出する層厚センサ41を設け、前記フィードチェン13の搬送速度は、前記搬送用無段変速装置40により車速に追従させて変速すると共に、前記層厚センサ41の検出値に応じて前記搬送用無段変速装置40による前記フィードチェン13の搬送速度を増速または減速制御するコンバイン。【選択図】図3
