| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separating device of a combine harvester, which can improve the separating accuracy of the separating device to increase the dropping quantity of first grains on a first grain-receiving chute and improve the collection efficiency of the first grains. <P>SOLUTION: In the separating device of the combine harvester, a front chaff sieve is disposed at a place above the first grain-receiving chute on an oscillation separator, a rear chaff sieve is disposed at a place above the second grain-receiving chute, an intermediate chaff sieve is disposed between the front and rear chaff sieves, and the intermediate chaff sieve is disposed just above the upper end portion of a grain-flowing plate so as to span the upper end portion of the grain-flowing plate in the longitudinal direction, whereby separating air flowing in the rear upper direction along the grain-flowing plate flows to pass the intermediate chaff sieve from the lower side to the upper side. Thereby, oscillation separating for separating grains (unhulled rice) from dusts, waste straws and unhulled rice having rachis-branches with the intermediate chaff sieve, and wind-powered separation with separation wind for blowing off the separated dusts and waste straws can be cooperated to increase the amount of the first grains dropped on the first grain-receiving chute. Consequently, the separating accuracy of the separating device is improved to enhance the collection efficiency of the first grains. <P>COPYRIGHT: (C)2011,JPO&INPIT |
