PROBLEM TO BE SOLVED: To provide a sorting apparatus in a threshing unit, the apparatus that prevents mixture of waste straws to selection grain in an early period of threshing and prevents grain from being exhausted outside a machine in the threshing final stage, and thereby improves selection performance of a swinging sorting unit.SOLUTION: A sorting apparatus in a threshing machine includes a straw discharge rail 52 operating by an amount of the conveyance grain culm, and fin opening/closing means for adjusting a grain filtration rate by operating opening/closing of each fin 41 in a chaff sieve 31 for filtration selection provided to a swinging/sorting unit 18 for performing swinging/sorting by receiving threshed materials. An operation arm 44 is made to swing based on the operation of the straw discharge rail 52 and each fin 41 is operated in linkage with the opening and closing to adjust the grain filtration rate. The operation arm 44 of the fin opening/closing means and the side plate 18a of the swinging sorting unit 18 are configured to be connected by slow speed means 58 for making the opening/closing linkage operation of the fin 41 carry out at a slow speed.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】脱穀初期に選別穀粒中への藁屑類の混入を防止すると共に、脱穀終期に穀粒の機外排出等を防止し揺動選別体の選別性能を向上させる脱穀部における選別装置を提供する。【解決手段】搬送穀稈の量により作動する排藁レール52と、脱穀物を受けて揺動選別をする揺動選別体18が有する濾過選別用のチャフシーブ31に、その各フィン41を開閉動作させて穀粒の濾過量を調整するフィン開閉手段とを備え、前記排藁レール52の作動に基づき操作アーム44を揺動し各フィン41を開閉連係動作させて、穀粒の濾過量を調整するようにした脱穀機における選別装置であって、前記フィン開閉手段の操作アーム44と揺動選別体18の側板18aとを、フィン41の開閉連係動作を緩速度で行わせる緩速手段58によって連結する構成にした。【選択図】図3
