"Overhead Line Stringing Accessories" are indispensable for preventing damage to conductors and ensuring safe, efficient tension stringing of overhead transmission lines. They manage mechanical stress and facilitate smooth movement:

• Conductor Rollers (OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks/Sheaves):

  • Friction Reduction: These robust rollers, typically made of aluminum alloy or steel with precise bearings, are hung from towers or poles. They provide a smooth, low-friction path for the conductor to run through as it's pulled, significantly reducing friction that could abrade or damage the conductor's outer strands.

  • Guiding and Support: They guide the conductor along the planned route, preventing it from snagging on structures, trees, or ground obstacles. They also support the conductor's weight during stringing, maintaining the required sag and clearance.

  • Multi-Conductor Options: Specialized multi-sheave rollers are designed for stringing bundled conductors (e.g., two, three, or four conductors per phase), ensuring they maintain their relative positions and do not get damaged by touching each other during the process.

• Pulling Swivels (Anti-Twist Devices):

  • Preventing Torsion: The most critical function of a pulling Swivel is to prevent rotational forces from the pulling rope (which can naturally twist under tension) from transferring to the conductor. This is especially vital for sensitive conductors like OPGW (Optical Ground Wire) which contain delicate optical fibers, or for bundled conductors where twisting can cause uneven sag or damage to spacers.

  • Smooth Rotation: High-quality swivels feature robust, sealed ball bearings that allow free rotation, absorbing any torsional stress in the pulling system.

• OHTLstringingequipment.com/Conductor-Grips--Clamps.html target='_blank'>Conductor Grips (Pulling Socks/Stockings): While also "tools," they function as accessories. They securely connect the pulling rope to the conductor. Modern designs ensure:

  • Even Pressure Distribution: Woven mesh designs distribute pulling force evenly over the conductor's surface, preventing localized crushing or deformation.

  • Non-Slip Connection: Provide a reliable, non-slip grip that holds securely even under high tension.

• Grounding Systems & Leads: Crucial for safety, these accessories ensure that the conductor is effectively grounded during stringing to dissipate any induced currents, protecting workers and equipment.

• Pilot Wire Sheaves & Accessories: For initial pilot wire installation, specialized smaller sheaves and accessories ensure smooth deployment before the heavier conductors are pulled.

By minimizing friction, preventing twisting, and providing controlled guidance, these accessories are fundamental to damage-free and safe overhead line construction, ensuring the long-term integrity and performance of the transmission network.