From the point of view of structure and material, helical armor rods for overhead line are made of multiple strands of high-strength aluminum alloy prefabricated into a spiral structure. Each strand has undergone heat treatment and molding process, which can make the spiral arc and the outer diameter of the wire highly match. This preformed design is different from the traditional rigid wire protection fittings. Its flexible structure can closely fit the surface of the wire to avoid the local stress concentration of the wire caused by rigid contact. In addition, the high-quality helical armor rods for overhead line will also add an antioxidant coating to the surface to further extend the service life, so that the protective line can adapt to extreme temperature environments and meet the needs of transmission projects in different climatic regions.
The role of helical armor rods for overhead line is to solve the vulnerable pain points of the wires in the transmission line, which are specifically reflected in three scenarios. The first is at the connection site between the wire and the metal fittings. Under the traditional installation method, the wire is prone to local wear due to the extrusion and vibration of the metal fittings, and the phenomenon of broken aluminum strands may occur after long-term operation. Helical armor rods for overhead line are wrapped in the outer layer of the wire by spiral winding, which converts the direct contact between the metal fittings and the wire into the contact between the wire guard and the metal fittings, which can effectively disperse the pressure and avoid wire wear. At the same time, its pre-twisted structure can absorb part of the vibration energy and reduce wire fatigue damage. The second is that in the sections where the transmission line crosses roads, railways, and rivers, the wires need to withstand greater tension and external environmental interference. Helical armor rods for overhead line can enhance the mechanical strength of the wires, improve the tensile and impact resistance of the wires, and reduce the risk of wire fracture caused by accidental external forces. Third, in the renovation project of the old line, some of the wires have suffered minor aluminum strand damage, and the cost of directly replacing the wires is too high. The installation of helical armor rods for overhead line can repair and strengthen the damaged parts, extend the remaining service life of the wires, and reduce the cost of transformation.
From the perspective of installation and operation and maintenance, the advantages of helical armor rods for overhead line are even more obvious. The installation of traditional rigid wire protection fittings requires the use of professional tools for bolt fastening, which has high technical requirements for installers, and is prone to installation deviations during high-altitude operations, which affects the protection effect. Helical armor rods for overhead line adopts a spiral structure, and no complicated tools are required for installation. Only the guard line needs to be attached to the surface of the wire and rotated clockwise to complete the fixation. It can be operated by a single person, and the installation efficiency is more than 2 times higher than that of traditional metal fittings. At the same time, it avoids the hidden dangers of operation and maintenance caused by loose bolts.
In short, if you need an efficient and reliable line safety solution. You can try our helical armor rods for overhead line, we believe it will satisfy you!