Earthwire Automatic Self-Gripping Come-Along Clamps For Power Transmission Line
Earthwire automatic grips (also called self-gripping clamps or come-along clamps) are specialized tools used primarily in electrical power construction and overhead transmission line work to grip, pull, and tighten earth wires, conductors, or OPGW cables securely without damaging them.
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(also called self-gripping clamps or come-along clamps) are specialized tools used primarily in electrical power construction and overhead transmission line work to grip, pull, and tighten earth wires, conductors, or OPGW cables securely without damaging them.
Key features and uses include:
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: They automatically grip the earth wire or conductor when tension is applied, allowing for easy adjustment, pulling, and tightening of the wire during installation or maintenance. This eliminates the need for manual tightening and reduces slippage risks. They are often used for lifting conductors and steel earth wires in suspension systems.
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: Typically made from high-strength forged alloy steel or aluminum alloy, these grips are designed to be lightweight yet durable. They undergo heat treatment for enhanced tensile strength and wear resistance. The gripping claws are finely ground to minimize damage to cables while providing a strong hold.
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: Available models can handle loads ranging from around 0.5 to 3 tons or more, with safety factors commonly around 4:1. Sizes accommodate various wire diameters, for example, from 7mm up to 38mm or more, depending on the model.
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: Many feature a cam or parallel jaw mechanism that self-locks under tension, ensuring a firm grip without slippage. Some are galvanized or treated for corrosion resistance, suitable for outdoor use in power line environments.
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: Widely used in overhead power transmission line stringing, earth wire installation, and maintenance tasks. They are compatible with stranded wires, aluminum-clad steel wires, copper core wires, and OPGW cables.
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In summary, earthwire automatic grips are essential tools for safely and efficiently handling earth wires and conductors in electrical power line construction, offering reliable self-gripping action, high strength, and protection against conductor damage
