| 简介 |
PROBLEM TO BE SOLVED : To provide a shaking separation structure having a simple structure and capable of preventing trouble, such as, staying of waste dust materials in a threshing chamber and deteriorating of the threshing treating efficiency in a threshing part and effectively recovering grains contained in the waste dust materials, while preventing deterioration of separating actions with a re-separation mechanism, without causing increase in cost or in size.
SOLUTION : The shaking separation structure 200 is constituted so as to leak down first crops separated with a chaff sieve mechanism 230 down to a first gutter 51, leak down tailings separated with the re-separation mechanism 240 down to a second gutter 52 and transport unnecessary materials to the rear side of the machine body with the re-separation mechanism 240. In the shaking separation structure 200, a dust feed port 121 for releasing the waste dust materials, containing threshed materials and the unnecessary materials to a shaking separation mechanism 210, is provided on the downstream side in the grain culm transport direction of the threshing chamber 120 in the threshing part 100. In the re-separation mechanism 240, a part 240a, corresponding to a passage route P1 of the waste dust materials, is considered as coarse separation, as compared with the other part 240b.
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