| 摘要 |
The apparatus of the present invention comprises two parts; an apparatus f or automatically installing the supplemental (shunt) joint, and the shunt joint itself. The shunt joint provides both mechanical and electrical connection between two ends of an electrical cable, augmenting the existing joint which may remain in place. T he installation device comprises a frame which may be lifted into place over th e power line by a crane or helicopter. The frame is provided with a first linear actuator for placing at least first and second wedge elements fitted at each end of an existing sock et joint. The frame also comprises a second linear actuator for placing first and second wedge sockets at least partly surrounding the line and cooperating with corresponding wedg e elements. At least one threaded shaft, powered by an actuator motor, is provided to pu ll together the wedge sockets with the wedge elements. Together, the wedge elements and wedge sockets surround and lock around the line at each side of the socket joint. Once locked around the line, the coupling between the actuator motor and the threaded shaft may be severed, and the frame and associated elements removed from the line. The wedge elements and wedge sockets, clamped around the line, remain. The wedge socke ts are firmly tied together across the existing joint by the one or more threaded shafts, forming a mechanical as well as electrical shunt joint in parallel to the existing joint. |
