| 摘要 |
PROBLEM TO BE SOLVED: To provide a free grain-preventing structure which is used for a combine harvester, can prevent the threshed products from being carried around, can surely guide the threshed products to a separation portion, and can improve the recovery rate of the grains. SOLUTION: This free grain-preventing structure 250 that is to be applied to a combine harvester, is equipped with a threshing cylinder 230 having its threshing cylinder body 231 rotatable on an axis in a threshing chamber 210 and threshing teeth 232 disposed on the outer surface of the threshing cylinder body 231; a feed chain device 260 for conveying grain culms in the axial direction of the threshing cylinder 230, in a state where the ear tip sides of the grain culms are thrust into the threshing chamber 210, has a free grain-preventing member 251 for preventing that threshed products containing grains threshed from grain culms with the threshing teeth 232 from being carried around with the rotation of the threshing cylinder 230, in a free grain-preventing structure 250, and has disposed the free grain-preventing member 251, in a region where the threshing teeth 232 are moved from the lower side to the upper side, with respect to the axial rotation position of the threshing cylinder 230. COPYRIGHT: (C)2008,JPO&INPIT
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