| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a combine-harvester for preventing grains from being uselessly discharged to its outside when the harvester body turns.SOLUTION: A combine harvester 10 comprises: a transverse transportation unit 15 for clamping and transporting a stock root portion; a threshing treatment unit 14 for a threshing treatment; a selecting portion 16 for selecting the grains; and a waste straw treating unit 17 for accepting the waste straws from the transverse transportation unit and treating the waste straws. The transverse transportation unit is equipped with culm detection unit for controlling the culm detection quantity in the culm detection unit in proportion to the airflow of a second fun disposed in the selecting portion. The waste straw treating unit is equipped with a waste straw detection unit for controlling the airflow of a fan disposed in the separation unit in proportion to the waste straw detection quantity in the waste straw detection unit. The chaff angle of a chaff sieve 26 is proportionally controlled. The control of the chaff angle inversely proportional to the culm detection quantity and proportional to the waste straw detection quantity is made to prefer the chaff angle increasing control to the chaff angle decreasing control.</p> |
