| 摘要 |
PROBLEM TO BE SOLVED: To suppress an excessive adjustment output and to prevent a hunting even if a detected signal of a threshing depth detection means for detecting threshing depth of supplied grain culm is a mere on-off signal in a threshing apparatus of combine harvester, of the like. SOLUTION: This threshing depth controller of a combine harvester, or the like, is characterized in that a threshing depth is controlled in such a way that a detection interval distance (m) calculated by a feed velocity (v) of grain culm to the threshing apparatus 1 and a detection interval time (t) by a threshing depth detection means 2 for detecting depth and shallowness of the grain culm threshing depth position is adjusted to a preset standard value S.
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