| 摘要 |
PROBLEM TO BE SOLVED: To provide a mowing height control system for a combine which can perform mowing work while suitably switching automatic mowing height control and artificial mowing height control.SOLUTION: A mowing height control system for a combine comprises an artificial operation lift control part which changes a ground height of a mowing preprocessing part 8 on the basis of an operation of an operation implement, and an automatic lift control part which changes the ground height of the mowing preprocessing part on the basis of a detection result of a mowing height detection device which detects a mowing height of the mowing preprocessing part. When a non-working state is determined by a working state determination part, a lift control management means performs ground height control by the artificial operation lift control part prior to ground height control by the automatic lift control part at the execution of the ground height control by the automatic lift control part.SELECTED DRAWING: Figure 1 |
