| 摘要 |
<p>A system and method for controlling the telescopic movements of two telescopic beams moving inside a spreader frame, and the locking movements of the twistlocks in the telescopic beams. The telescopic movement of the telescopic beams are held in position at a desired place in relation to the frame with locking members. The system has a joint multi-rope lever system for performing the telescopic movement of the telescopic beams and the locking movements of the twistlocks. The system has an actuator operating the multi-rope lever system. The system also includes a control system supervising and controlling the actuator and the lever system.</p> |
