| 摘要 |
PROBLEM TO BE SOLVED: To provide a threshing depth controller for a combine with which a threshing machine can be operated in a proper depth threshing state while preventing drop of reaped grain culm in completion of a reaping operation. SOLUTION: When the existence of reaped grain culm supported and transported toward the threshing apparatus is detected by grain culm existence detecting means 14, the controlling means 100 performs a proper threshing depth control for operating a threshing depth adjusting means M1 to make a state in which a set proper threshing depth adjustment state is detected by a threshing depth detecting means S. When the change from existence to nonexistence of reaped grain culm is detected by the grain culm existence detecting means 14, the controlling means performs a forced deep threshing operation for operating the threshing depth adjustment means M1 to make a state in which a deep threshing adjustment state closer to a set amount depth threshing side than to the set proper threshing depth adjustment state is detected by the threshing depth detecting means S.
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