Wire turnbuckle, also called ratchet tighten belt, is in overhead line used as tension wire during laying construction. Use wire turnbuckle first wire rope or galvanized iron wire loosen and fix it in cross arm upper, clamp the wire with a clamp, and then pull the special wrench. Due to the anti-reverse effect of the pawl, the wire rope or galvanized iron wire is gradually wound on the ratchet roller to tighten the wire. Fix the tightened wire insulator on. Then loosen the pawl first, loosen the wire rope or galvanized iron wire, then loosen the clamp, and finally wrap the wire rope or galvanized iron wire around the roller of the ratchet wheel.