The Holding Force Generated By The Spiral Winding Of Pre-stranded Wire In Transmission Line Connections

armour rod in transmission line is formed by pre-stretching multiple fine steel wires according to a specific pitch. During installation, it is wound around the outer layer of the conductor, and the elastic restoring force of the steel wires ensures a tight fit against the conductor surface. This helical structure creates a distributed clamping area at the connection between the conductor and the insulator, with a contact length typically reaching 15-20 times the conductor diameter. armor rods conductor applies radial pressure to the conductor with each turn, and the accumulated friction from multiple turns can withstand the tensile load on the conductor.