| 摘要 |
Cable machine control, particularly a grapple yarder is provided with an integrated control system whereby the operator is provided with controls each of which controls a desired operation or movement of the grapple (44). In particular the controls include a haul back and an in direction control, an up and down control and an opening and closing control some of which may be operated simultaneously with the speed of any operation or movement dependent on the maximum displacement of the control for any selected operation or movement. |
