GRAIN THRESHER

WIPO Patent Application WO/2012/114653

A1

A threshing chamber cover (18) covers at least an upper part of a threshing cylinder (13) and an upper part of a cut-ears processing device (14). Threshing teeth (17) provided to 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 generated at the threshing cylinder (13). The threshing chamber cover (18) is formed such that, in the cross-section taken along a plane perpendicular to the axial direction, the distance from the outer circumference of the threshing cylinder (13) increases gradually in the downward direction with regard to the direction of rotation of the threshing cylinder (13), whereby a space is formed above the threshing cylinder (13) and above the cut-ears processing device (14). With this structure, grain stalks (22) can leave away from the outer circumference of the threshing cylinder (13), and therefore, it is possible to prevent the grain stalks (22) from being wound around the threshing cylinder (13) and to suppress unnecessary power consumption of the threshing cylinder (13).

NAKAHATA AKIHIRO (JP)
KUBO TAKAYUKI (JP)

PCT/JP2012/000528

August 30, 2012

January 27, 2012

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YANMAR CO LTD (JP)
NAKAHATA AKIHIRO (JP)
KUBO TAKAYUKI (JP)

A01F12/00; A01F12/18; A01F12/22

JP2002112618A	2002-04-16
JP2005295846A	2005-10-27
JP2008161086A	2008-07-17
JPS59154021U	1984-10-16

KATSURAGAWA, Naoki (JP)
Naoki Katsuragawa (JP)

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