Patent ID: 8336358

Claim:
A wire stretching device for applying a drag force onto a wire wound around an object, comprising: a primary platform, comprising a plate, a fixed stick and a track, the fixed stick and the track disposed on a surface of the plate, the fixed stick having a first fixing device for fixing a first end of the wire; a first sub-platform, having a first stage and a first connecting element disposed below the first stage, the object loaded on the first stage fixedly, the first connecting element adapted to be encircled onto the track so that the first sub-platform is adapted to slide along the track; a second sub-platform, having a second stage, a second connecting element disposed below the second stage, and a second fixing device disposed on the second stage, the second fixing device adapted to fix a second end of the wire, the second connecting element adapted to be encircled onto the track so that the second sub-platform is adapted to slide along the track; and a driving device, adapted to drive the second sub-platform moving along the track for adjusting the tension of the wire, wherein the first sub-platform slides along the track corresponding to the tension of the wire.