PROBLEM TO BE SOLVED: To provide a threshing device that is compatible with various materials of different material properties, and capable of threshing processing efficiently.SOLUTION: A threshing cylinder 30 is rotatably supported to a threshing chamber 27, and divided into three of a pre-threshing cylinder 31, a middle threshing cylinder 33, and a rear threshing cylinder 32 from a machine body front. The rear threshing cylinder 32 is rotationally driven at high speed to the pre-threshing cylinder 31, and the middle threshing cylinder 33 is constituted switchably between a low-speed rotation state of rotating at the same speed as the pre-threshing cylinder 31 and a high-speed rotation state of rotating at the same speed as the rear threshing cylinder 32. The middle threshing cylinder 33 is supported to a support shaft 46 (second shaft) in a freely idling manner, and is alternatively connected between a hollow shaft 47 (first shaft) side where the pre-threshing cylinder 31 is fixed and a support shaft 46 side where the rear threshing cylinder 32 is fixed.COPYRIGHT: (C)2015,JPO&INPIT【課題】材料特性の異なる様々な材料に対応し、効率よく脱穀処理ができる脱穀装置を提供する。【解決手段】扱胴30は、扱室27に回転自在に支持されると共に、機体前方から前扱胴31、中扱胴33、後扱胴32に三分割される。後扱胴32を前扱胴31に対して高速回転駆動し、中扱胴33は、前扱胴31と同速回転する低速回転状態と、後扱胴32と同速回転する高速回転状態と、に切換え自在に構成する。中扱胴33は、支持軸46(第2の軸)に遊転自在に支持されると共に、前扱胴31が固定される中空軸47(第1の軸)側と、後扱胴32が固定される支持軸46側と、に択一的に連結される。【選択図】図5
