PROBLEM TO BE SOLVED: To provide a combine harvester that surely unloads waste culms cut by the end part of a threshing cylinder, prevents a culm-discharging port from clogging and has improved threshing performance and workability.SOLUTION: In the combine harvester equipped with the threshing cylinder 6 that is transversely installed in the longitudinal direction of a threshing chamber 121 and has a plurality of threshing teeth 122a and 122b spirally arranged on the outer peripheral surface in the threshing chamber 121 of a threshing part 4 for threshing grain culms reaped by a reaping part 7, cutting blades 204, 208 and 208 that cut discharged culms threshed by the threshing teeth 122a and 122b and conveyed and have a relief angle &alpha to the threshing teeth 122b are arranged at the end part of the threshing cylinder 6 or at a discharged culm outlet part 205 behind the threshing cylinder 6, at the outlet side of the threshing cylinder 6.COPYRIGHT: (C)2010,JPO&INPIT【課題】扱胴終端部で切断した排稈を、確実に排出させて排稈口の詰まりを防ぎ、脱穀性能および作業性を向上させたコンバインを提供する。【解決手段】刈取部7で刈り取った穀稈を脱穀する脱穀部4の扱室121内であって、扱室121の前後方向に横架し、外周面に螺旋状に設けた複数の扱歯122a,122bを有する扱胴6を備え、扱胴6出口側の、扱胴6の終端部もしくは扱胴6後方の排稈出口部205に、扱歯122a,122bにより脱穀されるとともに搬送されてきた排稈を切断する、扱歯122bに対して逃げ角αを設けた切刃204,208,208´を備える。【選択図】図8
