| 摘要 |
PURPOSE:To allow a cab to be automatically operated for tilt-up or tilt-down only by an operation of a control lever by controllably providing a directional control valve switching an oil hydraulic circuit to a tilt-down position and a tilt-up position with the said lever. CONSTITUTION:A directional control valve 56 switching an oil hydraulic circuit to a tilt-down position and a tilt-up position by an operation of a control lever 68 is provided in the said circuit connecting a tilt cylinder 6 swaying and driving a cab and an oil hydraulic pump 52 driven by a motor 54. In addition, an electric circuit is provided containing a tilt command switch closed only when the said lever 68 is rotated, a most shrinked state detecting switch opened by detecting the most shrinked state of the piston rod 12 of the tilt cylinder 6, a tilt completion switch opened by detecting the tilt-up completion state, and a transfer switch interlocked with the control lever 68. Accordingly, a desired action can be performed only by an operation of the lever 68. |
