| 摘要 |
A system for replacing cable from underground installation, comprising of first and second vehicle cooperatively in first, second and third modes of operation and located at first and adjacent cable access location respectively. The first vehicle including a capstan for pulling old cable from the first cable access location and storing pulling rope. The second vehicle is adapted to position a quantity of new cable in position to be pulled into the adjacent cable access location. Line rope is stored on the second vehicle. The first mode includes pulling old cable from the first cable access location with one end of the line rope attached to the end of the old cable at the adjacent cable access location until the one end is at the first location. The second mode including use of the line rope to retrieve the line rope with one end of the pulling rope attached thereto until the end of the pulling rope reaches the adjacent location, the pulling rope being released from the capstan in a freewheel condition. The third mode includes use of the capstan to retrieve the pulling rope to the first location while pulling new cable from the quantity of new cable from the adjacent location to the first location. 24
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