Patent ID: 8794596

Claim:
A wire tensioner comprising: a body including a plurality of rod bores axially defined therein; a plurality of rods configured so that each rod, of the plurality of rods, separately supports a corresponding wire of a plurality of wires from a structure and introduces a tensile force to the corresponding wire of the plurality of wires, wherein the plurality of rods are disposed in the plurality of rod bores to guide the axial displacement of the plurality of rods in the plurality of rod bores; a fluid pressure providing unit configured to provide fluid pressure to the plurality of rods in order to allow the plurality of rods to exhibit the tensile force; a fluid control unit, connected at one side thereof to the plurality of rods and connected at the other side thereof to the fluid pressure providing unit, and configured to selectively interrupt fluid pressure provided to the plurality of rods to separately control the operation of a selected rod of the plurality of rods; a wire engagement unit installed at a front end of the body and configured to fixedly engage the plurality of rods and the plurality of wires with each other; and a pressure-supporting unit comprising a plurality of support bars having ends connected to the body, a pressure plate engaged to other ends of the support bars, and a plurality of fixing pins engaged with the pressure plate to allow the wire engagement unit to be disengaged from or engaged with the pressure-supporting unit.