| 摘要 |
PURPOSE:To ensure automatic rocking movement of a slewing body without the needs for lever operation by using a system in which an electromagnetic switch valve is controlled so that the slewing body is moved in a rocking manner until a target inclination angle is reached according to the target inclination angle and actual inclination angles. CONSTITUTION:An input unit 30 is operated to set up a target inclination angle X for a slewing body 4 in relation to the horizon, and the angle X is stored in RAM27. The actual inclination angle of the slewing body 4 is detected by an angle sensor 29 and actual inclination angle Y is sent out to CPU25. In the CPU25, the difference E between the angles X and Y is obtained for judgement, and the slewing body 4 is moved in a rocking manner so that pressure differences are eliminated. The rocking operation and the slewing body and the excavation operation of the front working machine can be raised in efficiency, and the needs for lever operation by driver can be eliminated. |
