PROBLEM TO BE SOLVED: To solve the problem wherein waste straw conveyed by an ear tip side waste straw conveyor interferes with a belt for transmitting rotation from a threshing cylinder shaft to a transmission shaft.SOLUTION: This threshing apparatus includes a waste straw conveyor 25 having a rootstock side waste straw conveyor 26 and the ear tip side waste straw conveyor 27 for taking over and conveying threshed waste straw from the end of a grain culm supply conveyor 21 provided on one side of a threshing chamber 2. A guide surface 50 obliquely arranged from the terminal side of the grain culm supply conveyor 21 toward the other side of the threshing chamber 2 in a plan view is provided between a threshing chamber rear plate 52 and the conveyance starting edge side part of the ear tip side waste straw conveyor 27, and the ear tips of waste straw discharged backward from a culm discharge port 53 formed in the threshing chamber rear plate 52 are guided abutted by the guide surface 50 and taken over to the ear tip side waste straw conveyor 27.COPYRIGHT: (C)2013,JPO&INPIT【課題】扱胴軸から伝動軸に回転伝達するベルトに、穂先側排藁搬送装置が搬送している排藁が干渉するという課題がある。【解決手段】脱穀室2の一側に設けた穀稈供給搬送装置21の終端から脱穀済の排藁を引継搬送する株元側排藁搬送装置26と穂先側排藁搬送装置27を有する排藁搬送装置25を設ける。脱穀室後板52と穂先側排藁搬送装置27の搬送始端側の部位との間に、平面視において、前記穀稈供給搬送装置21の終端部側から脱穀室2の他側へ向けて斜めに配置される案内面50を設け、該案内面50によって脱穀室後板52に形成した排稈口53から後方に排出される排藁の穂先を当接案内しながら穂先側排藁搬送装置27へ引き継ぐ構成としたことを特徴とする脱穀装置。【選択図】図2
