| 摘要 |
PROBLEM TO BE SOLVED: To stabilize a rolling posture of an implement by ordinarily controlling the rolling based on the detected deviation between the tilted angle of a machine body and a set tilting angle, and when the slope of the field surface such as the edge of a levee is sharp so sa not to be followed even if a grounding implement is driven at the maximum speed of a rolling actuator against the rolling, by changing the method for controlling the rolling actuator in the rolling-controlling device for driving and rolling the grounding implement so that the tilted posture to the ground to be kept at the set tilting angle in the right and left direction of the grounding implement based on the detected tilted angle of the machine body. SOLUTION: The rolling control mechanism for driving and rolling the grounding implement carries out the control so that the machine body may be tilted in a direction opposite to the direction of the tilting change of the machine body regardless of the deviation between the set tilted angle and the detected tilted angle when the following of the tilting change of the traveling machine body at present is impossible even if the grounding implement is driven and rolled at the maximum speed of the rolling actuator in the rolling control mechanism for driving and rolling the grounding implement. COPYRIGHT: (C)2007,JPO&INPIT
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