| 摘要 |
An overhead conductor replacement apparatus comprises a first grip 4 configured to grip a first rope, a second grip 6 configured to grip a second rope and an aperture 8 for enabling the apparatus to be supported by an overhead conductor. The second grip holds the second rope when a force is applied in a first direction, but allows it to move when a force is applied to the second rope in a second direction, see Figs 3A, 3B. The apparatus can be pulled along a conductor using a tractor unit (48, Fig 10), and then the ropes pulled tight (Fig 11) so that the apparatus supports the conductor. A new conductor then then be pulled into place by the old one. If the conductor should break, the first rope can be used to pull the apparatus back along the second rope (38, Fig 14), the old second rope put in the aperture, and the apparatus pulled out again with a new second rope (38A, Fig 15). |
