| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a grain thresher in which power consumption is reduced and efficiency of threshing is improved. <P>SOLUTION: A threshing chamber cover 18 covers at least an upper side of a threshing cylinder 13 and an upper side of a cut-ears processing device 14. Threshing teeth 17 of the threshing cylinder 13 are formed to be flat along a plane parallel to the axial direction of the threshing cylinder 13. The cut-ears processing device 14 processes the cut ears occurring in the threshing cylinder 13. In a cross section cut at a plane orthogonal to the axial direction, a threshing chamber cover 18 is gradually separated from the outer periphery of the threshing cylinder 13 as being more downstream in the rotation direction in the threshing cylinder 13 to form a space above the threshing cylinder 13 and above the cut-ears processing device 14. Thereby, since grain straws 22 can be separated from the outer periphery of the threshing cylinder 13, it can be prevented that the grain straws 22 are wound on the threshing cylinder 13, and the excessive power consumption of the threshing cylinder 13 can be suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
