Triple Bundle Stringing Pulley Block For Overhead Power Line Stringing Conductor

The Triple Bundle Stringing Pulley Block and Pull Board is a specialized tool designed for stringing two or three bundled conductors, commonly used in overhead power line construction involving bundled cables like ADSS or OPGW.

Key Features and Details:

• Design and Compatibility

  • The triple bundle stringing block typically features three sheaves (pulleys) arranged to accommodate bundled conductors efficiently.

  • It can be adapted to angle irons with angles less than 90 degrees, allowing flexible installation on different support structures such as crossarms or stringing frames.

• Materials and Construction

  • Frames are generally made from galvanized steel or aluminum alloy for corrosion resistance and durability in outdoor environments.

  • Sheaves are often made from nylon or aluminum, mounted on ball bearings, providing smooth rotation and reducing cable wear during stringing.

• Load Capacity and Dimensions

  • Typical rated loads for triple bundle stringing blocks range from 10 kN up to 249 kN, depending on the model and manufacturer.

  • Sheave diameters vary widely (e.g., 612 mm to 1100 mm or larger), with widths around 68 mm to 95 mm, sized to fit various conductor diameters and bundled configurations.

• Additional Features

  • Some models include pulley boards or pull boards, which help distribute load and provide a stable base for the block during stringing operations.

  • Optional grounding systems are available on some pulley blocks to handle induced currents during installation.

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Advantages

• Efficiently handles bundled conductors, reducing the risk of cable damage and simplifying the stringing process.

• Adaptable to different mounting angles and structures, improving versatility on various pole or tower designs.

• Durable construction ensures long service life in harsh outdoor conditions.

• Ball bearing sheaves reduce friction and operator effort.

Applications

• Widely used in overhead transmission and distribution line construction where bundled conductors are deployed.

• Suitable for stringing ADSS, OPGW, and other fiber optic or power cables that come in bundled configurations.

Summary

The Triple Bundle Stringing Pulley Block and Pull Board is a robust, versatile solution designed to streamline the installation of bundled conductors in power line projects. It offers high load capacities, adaptable mounting options, and smooth operation through quality materials and ball bearing sheaves. This equipment is essential for safely and efficiently stringing two- or three-bundle cables on various support structures