PROBLEM TO BE SOLVED: To provide a thresher capable of maintaining separation accuracy highly by reducing fluctuation of the amount of processed products, while utilizing effectively a processing capacity of oscillation separation equipment.SOLUTION: A thresher is provided with a second return device (130) for returning second products to oscillation separation equipment (21), a second product sensor (40) for detecting the amount of the second products returned by the second return device (130), a layer thickness sensor (42) provided on the upper side of a chaff sieve (24), for measuring a layer thickness of processed products, and a control device for decelerating driving speed of the second return device (130), when the amount of a feed material, which is a difference between a detection value by the second return device (130) and a detection value by the layer thickness sensor (42), is increased.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】揺動選別装置の処理能力を有効に活用しつつ、処理物量の変動を少なくして選別精度を高く維持できる脱穀装置を提供する。【解決手段】前記2番物を揺動選別装置(21)に還元する2番還元装置(130)と、該2番還元装置(130)で還元される2番物の量を検出する2番物センサ(40)と、前記チャフシーブ(24)の上側に設けた処理物の層厚を測定する層厚センサ(42)と、前記2番物センサ(130)の検出値と前記層厚センサ(42)の検出値の差分である供給物量が増加した場合に、前記2番還元装置(130)の駆動速度を減速させる制御装置を設けた。【選択図】図4
