THRESHER

摘要

PROBLEM TO BE SOLVED: To provide a thresher not requiring much labor to an operation of an angle control of a dust discharging valve with inexpensively producible. SOLUTION: This thresher has a nip rail 7 nipping and conveying grain stem together with a feed chain 4 in opposing to the feed chain 4 is provided in freely vertically transferring to be capable of coping with variation of an amount of the conveyed grain stem. A dust discharging valve 20A transferring threshed materials to backward according to rotation of a threshing cylinder 2 is provided on a lower face of a roof board of a threshing chamber 1 in changeable of an angleθwith a rotating direction of the threshing cylinder 2. The nip rail 7 is mechanically connected to an angle operating part material 22 of the dust discharging valve 20A and the system is constructed so as an angleθof the dust discharging valve 20 to be larger according to rising of the nip rail 7.