| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the grading device of a combine harvester, whose conveyer gutter portion can easily be cleaned. <P>SOLUTION: This grading device 5 of the combine harvester A, in which the first air course 42 for grading grains is formed from a blasting port 41 of a winnower 22 to an upper position of a clean grain receiving gutter 43 and which is used for blasting air from the winnower 22 to the clean grain receiving gutter 43 through the first air course 42 to winnow the threshed gains, and receiving the winnowed clean grains in the first grain-receiving gutter 43, is characterized by forming the second air course 46 for blasting the blast air of the winnower 22 to a lower position of the clean grade-receiving gutter 43, and removing residues in the clean grain-receiving gutter 43 with air blasted from the winnower 22 to the clean grain-receiving gutter 43 through the second air course 46. <P>COPYRIGHT: (C)2007,JPO&INPIT |
