What role do specialized pulling grips and running boards play in protecting conductors, especially sensitive ones like ACCC or OPGW, during overhead pulling?

2025-07-19

Specialized pulling grips and running boards are absolutely vital components in overhead conductor pulling, acting as the crucial interface between the pulling rope and the conductor. Their role is to transmit the pulling force efficiently while protecting the conductor from damage, a role that becomes even more critical with sensitive new-generation conductors:

  • Pulling Grips (Come-alongs/Stocking Grips):

    • Purpose: These devices attach to the end of the conductor and connect to the pulling rope, allowing the pulling force to be applied.

    • Protection for Sensitive Conductors: For conductors like ACCC or OPGW (Optical Ground Wire), standard grips can cause crushing or slippage, damaging the sensitive composite core or optical fibers. Specialized grips are designed with:

      • Elongated, Gradual Compression: To distribute the gripping force evenly over a longer length, preventing localized stress points.

      • Internal Liners/Coatings: Non-abrasive materials internally to prevent direct metal-on-conductor contact and minimize surface damage to the outer aluminum strands.

      • Specific Designs for Composite Cores: Grips for ACCC, for instance, are meticulously engineered to engage the composite core without damaging it, while still transferring force through the aluminum strands.

  • Running Boards (Bundle Pulling Grips/Swivels):

    • Purpose: When stringing bundled conductors (e.g., 2, 4, 6 conductors per phase), a running board connects all the sub-conductors to a single pulling rope. It ensures that all conductors are pulled simultaneously and evenly, preventing twisting or entanglement.

    • Protection & Even Distribution:

      • Multi-Conductor Slots: Running boards feature multiple, precisely spaced slots or rollers for each sub-conductor, ensuring they remain separated and don't rub against each other during the pull.

      • Integrated Swivels: High-capacity swivels are integrated into running boards. These swivels are crucial for allowing the pulling rope to rotate independently of the conductors, preventing any twisting forces from being transmitted to the conductor bundle, which is especially vital for OPGW and other sensitive conductors where torsion can cause internal damage.

      • Smooth Contact Surfaces: All surfaces that contact the conductors are designed to be smooth and non-abrasive.

Our comprehensive range of overhead conductor pulling accessories includes state-of-the-art pulling grips and running boards, meticulously engineered for specific conductor types and configurations. We ensure that every piece of equipment plays its part in safeguarding conductor integrity and optimizing your pulling operations.


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