PROBLEM TO BE SOLVED: To provide a thresher for threshing grain straws, reducing un-threshed grain straws.SOLUTION: In the thresher, a threshing cylinder 16 includes a plurality of threshing teeth 22 on the outer periphery, and is rotated on a rotation axis 17. A grain-conveying mechanism 11 conveys grain straws 14 along the rotation axis 17 of the threshing cylinder 16. A straw-pressing member 28 is disposed between the threshing cylinder 16 and the grain-conveying mechanism 11. The threshing teeth 22 are flatly formed, and the threshing teeth 22 adjacent to each other in a direction approximately parallel to the rotation axis 17 of the threshing cylinder 16 form V-shaped grooves. The threshing cylinder 16 is rotated in a direction threshing the grain straws 14 in an upper threshing style. A straw-pressing member 28 is disposed to contact with grain straws 14 between the threshing cylinder 16 and the grain-conveying mechanism 11 from the upper side. An introduction portion for gradually approaching conveyed grain straws 14 from the upper side in the conveying direction upstream side end portions of the grain straws 14 is formed in the straw-pressing member 28.COPYRIGHT: (C)2013,JPO&INPIT【課題】扱き残しを低減させた脱穀装置を提供する。【解決手段】扱胴16は、複数の扱歯22を外周に備え、回転軸17を中心に回転する。穀稈搬送機構11は、扱胴16の回転軸17に沿って穀稈14を搬送する。稈押さえ部材28は、扱胴16及び穀稈搬送機構11の間に配置される。扱歯22は扁平状に形成され、かつ、扱胴16の回転軸17と略平行な方向で隣接する扱歯22同士は、V字溝を形成している。扱胴16は、穀稈14を上扱ぎ式に脱穀する方向に回転する。稈押さえ部材28は、扱胴16及び穀稈搬送機構11の間の穀稈14に対して、上方から接触するように配置される。当該稈押さえ部材28には、穀稈14の搬送方向上流側端部において、搬送される穀稈14に対して上方から徐々に接近する導入部が形成される。【選択図】図3
