Relationship Between Pre-twisted Wire Tension And Clamping Force

In the design of transmission line fittings and the armor rod preformed construction process, the physical relationship between tension and clamping force determines the stability of the connectors. In the spiral structure of preformed armour rod, the degree of engagement between the contact surface of the metal wire and the conductor changes with increasing tension. armor rods itself spirally wraps around the conductor; as tension increases, the actual contact length between armor rods for acsr and the conductor increases, effectively enhancing the geometric effect of friction and engagement, thus increasing the clamping force. The spiral angle and wire diameter ratio in the design affect its deformation behavior, forming a tighter wrapping state, and the tension, after being transmitted to the clamping surface, generates a larger radial compressive force component.

The material elasticity and shape memory properties of armor rods transmission line also participate in this process. As the applied axial tension accumulates, the elasticity of the spiral structure causes armour rod to tend towards a stable wrapping shape, increasing the interfacial pressure between the conductor and the pre-twisted wire.