Prestressed anchorage device is used in concrete bridge construction

The utility model relates to a prestressed anchorage device is used in concrete bridge construction, including hollow anchor backing plate and duo gen prestress wire, anchor backing plate right side intercommunication has the bellows, anchor backing plate left side is equipped with the work anchor circle, work anchor circles and is equipped with toper through -hole a plurality of and anchor backing plate intercommunication, the aperture that anchor backing plate one side was kept away from to the toper through -hole is greater than the aperture that the toper through -hole is close to anchor backing plate one side, all be equipped with the working clamping piece who is used for pressing from both sides tight prestress wire in the toper through -hole, be equipped with the fixed orifices that supplies the prestress wire to pass among the working clamping piece, the prestress wire passes working clamping piece, anchor backing plate and bellows in proper order. The the device structural connection is stable, redu