PROBLEM TO BE SOLVED: To remove free grain over rack from threshed waste straw, so as to prevent of the grain from being discharged outside of a thresher together with the waste straw.SOLUTION: A supplying hole (6e) is formed between a threshing chamber middle front plate (6c) provided at the rear part in the threshing chamber (6) and a threshing chamber middle rear plate (6d) provided at the rear side of the threshing chamber middle front plate (6c) with a space so that the threshing discharge waste in the threshing chamber (6) is supplied from the inside of the threshing chamber (6) to the inside of a discharge waste treating chamber (10) through the supplying hole (6e), wherein a free grain over rack collecting part (&beta) is formed between a threshing chamber rear plate (6b) pivoting a rear end side of a threshing cylinder shaft (7) supporting a threshing drum (7a) and the threshing chamber middle rear plate (6d), and configured to remove free grains on the threshed straws by a threshing teeth (7b) on the rear end of the threshing drum (7a) in the free grain over rack collecting part (&beta) and flow-down them on to a swing selector (25).COPYRIGHT: (C)2011,JPO&INPIT【課題】脱穀後の排藁からささり粒を除去し、穀粒が排藁と共に機外へ排出されることを防止する。【解決手段】扱室(6)内の後部に設けた扱室中前板(6c)と、扱室中前板(6c)の後側に間隔をおいて設けた扱室中後板(6d)との間に供給口(6e)を形成し、扱室(6)内の脱穀排塵物を、扱室(6)内から供給口(6e)を介して排塵処理室(10)内へ供給する構成とし、扱胴(7a)を支持する扱胴軸(7)の後端部側を軸支した扱室後板(6b)と扱室中後板(6d)との間にささり粒回収部(ロ)を形成し、ささり粒回収部(ロ)で扱胴(7a)後端部の扱歯(7b)によって脱穀後の排藁にささっている穀粒を除去して揺動選別装置(25)上へ流下させる構成とする。【選択図】図2
