| 摘要 |
PROBLEM TO BE SOLVED: To provide a thresher capable of reducing the third loss at the time of turning operations and improving the grading accuracy by prohibiting the automatic regulation of a chaff angle based on the threshing through-put when completing reaping operations in which a grain culm detecting sensor is turned off and laying fins to a fin angle at the least after the passage of a prescribed time. SOLUTION: This thresher is composed by installing an angle changing means for fins in a chaff sieve 21 and a detecting means for the threshing through-put so as to automatically regulate the angle of the fins based on the detected threshing through-put, further installing a grain culm detecting sensor 6 for detecting the grain culms in the course of the reaping and conveying, prohibiting the automatic regulation of the chaff angle based on the threshing through-put when completing reaping operations in which the grain culm detecting sensor 6 is turned off and laying the fins to a fin angle at the least after the passage of a prescribed time. |
