Two Ways Open Hoisting Tackle Cable Pulley Block For Transmission Line Stringing
The Two Ways Dual-Sheave Hoisting Tackle is a versatile, heavy-duty pulley system designed for lifting, pulling, and rigging operations, commonly used in construction, transmission line erection, and cable stringing.
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The Two Ways Dual-Sheave Hoisting Tackle is a versatile, heavy-duty pulley system designed for lifting, pulling, and rigging operations, commonly used in construction, transmission line erection, and cable stringing.
Key Features
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Dual Sheave Design: Equipped with two pulleys (sheaves), allowing the rope to run through twice, effectively increasing mechanical advantage and reducing the effort needed to lift or pull heavy loads.
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Two Ways / Both Side Opening: The "two ways" or "both side opening" design means the sheaves can be opened from both sides, making it easier to load and unload the steel wire rope without threading it from end to end, saving time and reducing installation errors.
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Material: Typically made from high-strength cast iron or steel for durability, with some models featuring aluminum alloy side plates and nylon or MC nylon sheaves for lightweight and smooth operation.
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Load Capacity: Common rated loads range from 10 kN (approx. 1 ton) up to 100 kN (10 tons) or more, depending on model and size.
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Rope Diameter Compatibility: Designed to accommodate steel wire ropes from about 6 mm up to 18 mm or more.
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Weight: Varies by model, from around 6 kg for smaller tackles to 18 kg or more for heavy-duty versions.
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Mounting Options: Usually equipped with hooks or rings for easy attachment to lifting points.
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Examples
| Model | Rated Load (kN) | Sheave Diameter × Width (mm) | Rope Diameter (mm) | Weight (kg) | Features |
|---|---|---|---|---|---|
| QHS2-5 (Suntech) | 50 | 150 × 39 | ≤11 | 11 | Both side opening, cast iron |
| QHN2-2 (Marshine) | 20 | 100 × 31 | 7.7 | 2.6 | Aluminum alloy side, nylon sheave |
| VEVOR Twin Sheave | ~29.5 kN (6600 lbs) | - | 0.43-0.5 inch rope | ~6 | Aluminum alloy, braided rope, easy setup |
Applications
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Erecting transmission towers and poles.
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Cable and conductor stringing in power line construction.
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Lifting heavy materials and equipment on construction sites.
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Tensioning and pulling wires in industrial settings.
Advantages
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Ease of Use: Both side opening sheaves simplify rope installation and removal.
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Mechanical Advantage: Dual sheaves reduce the manual force required for lifting or pulling.
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Durability: Made from robust materials suitable for harsh outdoor environments.
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Lightweight Options: Aluminum alloy and nylon sheave models reduce dead weight, easing handling.
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Summary
The Two Ways Dual-Sheave Hoisting Tackle is a reliable, efficient rigging tool featuring two pulleys and a design that allows rope loading from both sides. It supports a wide range of rope sizes and load capacities, making it suitable for heavy-duty lifting and cable stringing tasks. Models from suppliers like Suntech, Marshine, and VEVOR offer various configurations with cast iron or aluminum alloy construction and nylon or steel sheaves, balancing strength and weight for different applications.
This tackle system enhances safety and efficiency in line construction, tower erection, and other industrial lifting operations by providing mechanical advantage and easy rope handling.
