Pre-stretched Wire Technology: Analysis Of The Mechanical Protection Mechanism Against Long-term Deformation Of Transmission Conductors

During the long-term operation of power lines, conductors are constantly subjected to mechanical stresses caused by their own weight, wind vibration, and environmental temperature fluctuations. If the stress distribution is uneven, the metal material is prone to irreversible plastic flow. By introducing a helical prefabricated structure into the armor rod preformed fittings, the force path can be altered at the physical structural level, thus solving the stress concentration problem easily caused by traditional fittings.

The principle of stress equilibrium distribution under spiral structure

Traditional crimping or bolting methods often generate huge clamping forces in local areas. This point-to-point stress state is the main cause of strand damage. preformed armour rod uses a completely different contact logic. Relying on its unique helical shape, it can form a long-distance enveloping contact with the conductor, diffusing the single stress point into a uniform stress surface.

Coordinated Distribution of Radial Pressure and Grip Force

This structural design achieves precise mechanical balance at the microscopic level:

• Stress Diffusion Path: As the helical strip winds, it generates uniform radial pressure through its own elastic rebound. This pressure is smoothly distributed along the conductor's axial direction, with no points of abrupt stress escalation.

• Friction Locking Mechanism: The long contact area provides ample gripping force, ensuring relative stillness between the strands even under severe vibrations, preventing internal displacement.

• Cross-sectional Stress Neutralization: By comprehensively wrapping the surface conductor, armor rods neutralizes tensile strain caused by bending, protecting the original shape of the aluminum strands.

Resistance to Metal Fatigue and Plastic Displacement

When conductors are under prolonged high-voltage tension, aluminum undergoes creep, meaning it begins to deform slightly before reaching its yield strength. armor rods for acsr successfully minimizes this risk by reducing pressure per unit area. Its excellent elastic recovery capability allows it to adjust synchronously with the conductor's slight thermal expansion and contraction, maintaining a tight fit at all times.

This protective measure not only enhances the overall rigidity of the line but also fundamentally maintains the geometric stability of the conductor cross-section. In high-voltage and ultra-high-voltage transmission fields, using armor rods transmission line as a connection and suspension solution is a core technical approach to ensure the cable's metallic structure is not physically damaged and to extend the service life of the power grid.