Wire Cable Conductor Stringing Pulley Block For Overhead Power Transmission Line
A Wire Cable Conductor Stringing Pulley Block is an essential tool used in the installation and maintenance of overhead power transmission lines. Its primary function is to guide and support conductors or cables during stringing, ensuring smooth and safe pulling over long distances and through complex tower structures.
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A Wire Cable Conductor Stringing Pulley Block is an essential tool used in the installation and maintenance of overhead power transmission lines. Its primary function is to guide and support conductors or cables during stringing, ensuring smooth and safe pulling over long distances and through complex tower structures.
| Feature | Description |
|---|---|
| Typically made from aluminum alloy, nylon, or a combination; frames often galvanized steel for corrosion resistance. | |
| Common diameters range from 250 mm up to 1500 mm or more; e.g., 508 mm, 660 mm, 822 mm are standard sizes. | |
| Available with 1, 3, 5, 7, or 9 sheaves depending on the application and load requirements. | |
| Breaking loads range from about 90 kN to over 200 kN; working loads typically around 30 kN to 100 kN or more, depending on the model. | |
| - Sheaves are molded in one piece for strength. |
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Grooves lined with neoprene or wear-resistant nylon/aluminum to protect cables.
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Ball bearings for smooth rotation.
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Optional grounding rollers or conductive sheaves to manage induced currents during stringing. |
| | Fixed, swivel-type, or hook with safety lock for secure attachment during stringing operations. |
| | Used for stringing overhead conductors such as ACSR cables up to sizes like ACSR 500, facilitating safe and efficient conductor installation on transmission tower. |
Stringing pulley blocks are critical for overhead power line construction, providing mechanical advantage and protecting conductors from damage during installation. Their robust construction, variety of sizes, and optional grounding features make them versatile for different transmission line voltages and conductor types. Selecting the appropriate pulley block depends on conductor size, load requirements, and site conditions.
This equipment ensures the conductor is smoothly guided with minimal friction and risk of damage, improving safety and efficiency in power transmission line projects
