PROBLEM TO BE SOLVED: To provide a thresher that can smoothly return and transport tailings even when a large amount of tailings are returned and transported in the thresher equipped with a returning device for returning and transporting tailings graded by a grading part to a threshing chamber side.SOLUTION: In a thresher equipped with a returning device 37 for returning tailings graded by a grading part 17 to a threshing chamber 19 side, the returning device 37 is equipped with a screw 51 for transporting tailings along the lateral direction, and a transport case 52 for covering the circumference of the screw 51. An opening part 70 communicated with the grading part 17 side is arranged in a state of opening an upper part at the middle part of the transport case 52.COPYRIGHT: (C)2013,JPO&INPIT【課題】選別部で選別された二番物を扱室側へ還元搬送する還元装置を備えた脱穀装置において、還元搬送される二番物の量が多い場合であっても、二番物をスムーズに還元搬送できる脱穀装置を提供することを課題としている。【解決手段】選別部17で選別された二番物を扱室19側に還元する還元装置37を備え、該還元装置37に、二番物を横方向に沿って搬送するラセン51及び該ラセン51の周囲を覆う搬送ケース52を設けた脱穀装置において、搬送ケース52の中途部に選別部17側と連通する開口部70を、上方開口させた状態で設けた。【選択図】図7
