PROBLEM TO BE SOLVED: To prevent falling into a state in which continuing work is impossible due to sorted objects clogging on a swinging shelf, and to improve efficiency of threshing and sorting work.SOLUTION: In a swinging shelf (51), a transfer shelf (52), a first chaff sieve (53) and a second chaff sieve (54) are provided. In a portion ranging from the upper side of the transfer shelf (52) to the upper side of the first chaff sieve (53), a diffusion guide (88) for diffusing and guiding secondary processed objects supplied to the right side front part of the transfer shelf (52) to a right-and-left direction is provided. A layer thickness sensor (43) for detecting the thickness of the sorted objects on the transfer shelf (52) is configured in such a way that a contact piece (44a) is suspended in an obliquely rearward-and-downward inclined posture with respect to a sensor support shaft (25) disposed in a direction which a side view and a plane view of the diffusion guide (88) intersect. When the layer thickness sensor (43) detects a predetermined value or higher, a scraper (34) for scraping off waste straws attached to the first chaff sieve (53) is activated.COPYRIGHT: (C)2015,JPO&INPIT【課題】揺動棚上で被選別物が詰まって作業続行不能の状態に陥ることを防止し、脱穀選別作業の能率を高める。【解決手段】揺動棚(51)に、移送棚(52)と第1チャフシーブ(53)と第2チャフシーブ(54)を備え、移送棚(52)の上側から第1チャフシーブ(53)の上側に亘る部位に、移送棚(52)の右側前部に供給された二番処理物を左右方向に拡散案内する拡散ガイド(88)を設け、移送棚(52)上の被選別物の層厚を検出する層厚センサ(43)を、拡散ガイド(88)の側面と平面視で交差する方向に配置されたセンサ支軸(25)に対して、接触子(44a)を斜め後方へ下がり傾斜した姿勢で吊り下げて構成し、層厚センサ(43)によって一定以上の層厚が検出されたときに第1チャフシーブ(53)に付着する藁屑を掻き落とすスクレーパ(34)が作動する構成とする。【選択図】図5
