Method and apparatus for providing temporary support and a means for relocating energized electrical conductors
A temporary support and conductor re-locator includes a mounting arm and corresponding mounting bracket on one end of the arm, the other end supporting a pivotally mounted insulator depending downwardly from a crank arm. The upper end of the crank arm is attached to an actuator which, upon actuation, pivots the crank arm and insulator about the end of the support arm so as to rotate up and out of the way an energized conductor contained in the wire holder at the bottom end of the insulator. The support arm is temporarily mounted to an existing transmission line tower or pole so as to extend outwardly substantially horizontally therefrom thereby cantilevering outwardly of the tower the end of the arm supporting the crank arm and insulator. Actuation of the actuator firstly elevates a lower portion of the crank arm then rotates the crank arm about the cantilevered end of the support arm.
1. An apparatus mountable to a transmission line tower comprising:
a support arm having a base end and an opposite cantilevered end;
a crank arm pivotally mounted to said cantilevered end of said support arm, said crank arm having an elongate upper portion extending upwardly from said cantilevered end and a lower portion extending downwardly from said upper portion, wherein said lower portion is retractable and extendable relative to said upper portion, and wherein said lower portion is adapted for mounting to an upper end of an electrical insulator stack;
a driving member mounted to said support arm;
an elongate member cooperating with said crank arm so as to retract and extend said lower portion relative to said upper portion;
a linkage member having a linkage member first end that is pivotably attached to said upper end of said upper portion of said crank arm and a linkage member second end that is in cooperation with said driving member; and
wherein, when said support arm is mounted to said transmission line tower, firstly, said elongate member is tensionable so as to retract said lower portion of said crank arm relative to said upper portion; and secondly, said linkage member is tensionable by said driving member so as to rotate said crank arm about said cantilevered end towards said support arm to thereby rotate said lower portion of said crank arm away from the tower.
2. The apparatus of claim 1 , wherein said mounting bracket is adapted for maintaining a substantially horizontal orientation of said support arm when said support arm is mounted to said transmission line tower.
3. The apparatus of claim 1 , wherein said lower portion telescopes within said upper portion of said crank arm.
4. The apparatus of claim 1 , wherein said crank arm pivots about said cantilevered end so as to rotate lower portion of said crank arm up and away from the tower when said support arm is mounted on the transmission line tower.
5. An apparatus mountable to a transmission line tower comprising:
a support arm having a base end and an opposite cantilevered end;
an electrical insulator stack;
a crank arm pivotally mounted to said cantilevered end of said support arm, said crank arm having an elongate upper portion extending upwardly from said cantilevered end and a lower portion extending downwardly from said upper portion, wherein said lower portion is retractable and extendable relative to said upper portion, and wherein said lower portion is adapted for mounting to an upper end of said electrical insulator stack;
a driving member mounted to said support arm;
an elongate member cooperating with said crank arm so as to retract and extend said lower portion relative to said upper portion;
a linkage member having a linkage member first end that is pivotably attached to said upper end of said upper portion of said crank arm and a linkage member second end that is in cooperation with said driving member; and
wherein, when said support arm is mounted to said transmission line tower, firstly, said elongate member is tensionable so as to retract said lower portion of said crank arm relative to said upper portion; and secondly, said linkage member is tensionable by said driving member so as to rotate said crank arm about said cantilevered end towards said support arm to thereby rotate said lower portion of said crank arm away from the tower.