PROBLEM TO BE SOLVED: To provide a combine switching a posture of an air guide body by a mechanical structure.SOLUTION: An air guide body 35 can be switched between a standing posture blowing selection air having passed an upper air passage 39A to a front part of a sieve 23 of an oscillation selection device 21 and a fallen posture blowing the selection air having passed the upper air passage 39A to a rear part of the sieve 23 of the oscillation selection device 21. A wire 45B switching the air guide body 35 between the standing posture and the fallen posture is provided. A front part of the wire 45B is connected to the air guide body 35. A rear part of the wire 45B is connected to a holding guide rod 54 moved vertically in accordance with a conveyance amount of waste grain culms of a conveyance device 50. When the waste grain culms are in the amount equal to or larger than a predetermined conveyance amount, the air guide body 35 is switched from the standing posture to the fallen posture.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2017,JPO&INPIT【課題】風案内体の姿勢の切換えを機械的構造によって行うコンバインを提供する。【解決手段】風案内体(35)は、上部風路(39A)を通過した選別風を、揺動選別装置(21)のシーブ(23)の前部に送風する起立姿勢と、上部風路(39A)を通過した選別風を揺動選別装置(21)のシーブ(23)の後部に送風する倒伏姿勢に切換可能に構成し、風案内体(35)を起立姿勢と倒伏姿勢に切換えるワイヤ(45B)を設け、風案内体(35)に、ワイヤ(45B)の前部を連結し、搬送装置(50)の排藁穀稈の搬送量に応じて上下方向に移動する挟持案内杆(54)に、ワイヤ(45B)の後部を連結し、排藁穀稈が所定の搬送量以上になった場合に、風案内体(35)を起立姿勢から倒伏姿勢に切換える構成とすることにより解決される。【選択図】図9
