Combined wire-tightening tool for tightening line wire

The utility model discloses a combined wire-tightening tool for tightening a line wire. The combined wire-tightening tool for tightening the line wire comprises a fixed pulley, a first wire-tightening pulley, a second wire-tightening pulley, a winch, a pulling rope, a pulley fixing plate and a spherical wire clamp, wherein the fixed pulley is fixed at the top end of a tower; the pulley fixing plate is fixed on a cross arm of the tower; the second wire-tightening pulley is fixed on the pulley fixing plate; the first wire-tightening pulley is fixed at the bottom end of the tower; the winch is fixed on the ground; the pulling rope is wound on the winch; the pulling rope led out of the winch is wound around the first wire-tightening pulley, the fixed pulley and the second wire-tightening pulley sequentially, and then tightened on the spherical wire clamp; during wire tightening, the winch is rotated only to pull the pulling rope so as to tighten the line wire. The combined wire-tightening tool has the advantages