| 摘要 |
PURPOSE:To improve working efficiency, by a method wherein a limit switch, which sets the raising angle of an arm, and a detecting limit switch for scooping and scooping finish orientation of a bucket are provided to control an electromagnetic control valve for arm and bucket. CONSTITUTION:A bucket 4 is vertically, rockably supported to the forward end of an arm 2 by means of a bucket cylinder 5, and the arm 2 is vertically rocked with the aid of an arm cylinder 3. An arm control electromagnetic valve 6 and a control electromagnetic valve 8 are connected in series to a hydraulic pump P. Meanwhile, detecting switches L1 and L2 for scooping finish orientation, scooping orientation of the bucket 4 and an arm given angle raising detecting switch L3 are provided. This enables the arm 2 to be brought to a stop, at a given angle when it is lowered, be easily shifted to a scooping position and a scooping finish position in a raising position, enabling to improve efficiency. |
