PROBLEM TO BE SOLVED: To reduce the occurrence of damage on grains to be transferred and clogging caused by the grains, by securing the area of a grain transfer passage from a horizontal cylinder part to a vertical cylinder part in a connecting member.SOLUTION: In a combine harvester, the axial center of the vertical cylinder part 27 of the connecting member 22 to a grain lifting device 25 from a bottom conveyance spiral 38 of a grain tank 20 is arranged in a position to deviate to one side with respect to the axial center of the horizontal cylinder part 26 and the vertical cylinder part 27 and the horizontal cylinder part 26 communicate with each other via a communication port 30. A supporting cylinder 36 is extended out in a cantilever state toward the interior of the horizontal cylinder part 26 from the side of a rear wall part 26b of the horizontal cylinder part 26, and a front end of an input shaft 40, into which the driving force of an engine 55 is input, is supported via a bearing at the leading end of the supporting cylinder 36. The front end of the input shaft 40 is connected to the rear end of the bottom conveyance spiral 38. A transmission mechanism A for interlocking the input shaft 40 with a grain-lifting spiral shaft 46 is installed between a site on the rear side, with respect to the rear wall part 26b, of the input shaft 40, and a lower part of the grain-lifting spiral shaft 46 provided in the grain lifting device 25.COPYRIGHT: (C)2008,JPO&INPIT【課題】接続部材内における横筒部から縦筒部への穀粒移送通路の広さを確保して、移送される穀粒の損傷や詰まりの発生を少なくする。【解決手段】グレンタンク20の底部搬送螺旋38から揚穀装置25への接続部材22の縦筒部27の軸芯を、横筒部26の軸芯に対して一側に外れた位置に配置し、縦筒部27と横筒部26とを連通口30を介して連通させる。そして、横筒部26の後壁部26b側から該横筒部26の内部へ向けて支持筒36を片持ち状態で延出させ、エンジン55の駆動力が入力される入力軸40の前端部を該支持筒36の先端部に軸受けする。また、入力軸40の前端部を底部排出螺旋38の後端部に接続する。そして、入力軸40における後壁部26bよりも後側の部位と、揚穀装置25に設けた揚穀螺旋軸46の下部の間に、該入力軸40と揚穀螺旋軸46を連動させる伝動機構Aを設ける。【選択図】図4
