Professional Double Sheave Block with 2KN Rated Load for Mechanical Advantage and Corrosion Resistance

Professional Double Sheave Block for Changing Line Direction and Creating Mechanical Advantage

• Efficiently Changes Direction of Pulling Force:​ The most common use is to redirect a rope or cable. When a straight pull from a winch is not possible or safe—such as when pulling a conductor around a corner or lifting a load at an angle—the double sheave block is anchored at the desired pivot point. The rope is threaded through one sheave, changing its direction by up to 180 degrees. This allows the power source (winch, tugger, or crew) to remain in a safe, optimal position while the load moves along the required path.

• Creates a Mechanical Advantage System:​ When the rope is threaded through both sheaves of the block and attached to the anchor point, it creates a simple 2:1 mechanical advantage system. In this configuration, the force required to lift or pull a load is theoretically halved, while the distance the rope must be pulled is doubled. This allows a smaller crew or a less powerful winch to move heavy transformers, tension conductors, or lift tower sections with significantly less effort and greater control.

• Reduces Friction and Wear on Ropes:​ Each sheave rotates on high-capacity bearings, allowing the rope to bend and move with minimal friction. Using a block to change direction is far superior to running a rope over a bare metal edge, which causes rapid abrasion and can weaken or cut the rope. The smooth-rolling sheaves protect expensive wire rope or synthetic slings, extending their service life and ensuring the integrity of the lifting system.

• Essential for Complex Rigging Setups:​ Electrical construction sites are rarely simple. The double sheave block is the building block for solving spatial challenges. It enables riggers to set up compound systems that combine direction changes with mechanical advantage, allowing them to maneuver loads in confined spaces, pull from advantageous positions, and distribute loads safely across structures.

• Critical for Conductor Stringing and Sagging:​ During overhead line work, tensioning equipment is often not in a direct line with the conductor. Double sheave blocks are used to redirect the pull line from the tensioner to the conductor, ensuring the force is applied correctly to achieve the proper sag. They are also used in traveler systems to move pulling lines over multiple structures.

• Improves Worksite Safety and Control:​ By allowing forces to be redirected, crews can operate winches and equipment from safer, more stable locations away from the direct line of pull or under suspended loads. The mechanical advantage gained also means loads can be moved more slowly and precisely, with less risk of sudden, uncontrolled movement that could lead to accidents.

• Durable Construction for Demanding Environments:​ Built for industrial use, these blocks are constructed from forged steel, aluminum alloy, or other high-strength materials. They feature sealed bearings to keep out dirt and moisture, and are often coated for corrosion resistance. This durability ensures reliable performance when lifting heavy equipment in substations or during tower construction in all weather conditions.

• Versatile for a Wide Range of Tasks:​ The application of this block is vast. It is used for setting up gin poles, hoisting materials to tower tops, tensioning guy wires, dragging equipment into position, and any task where the direction of a linear force needs to be managed or multiplied. It is a truly universal tool in the rigger's inventory.

• A Smart Investment in Lifting and Pulling Capability:​ A double sheave block is a relatively inexpensive tool that dramatically expands a crew's capabilities. It reduces the physical burden on workers, minimizes the need for larger, more expensive equipment, and enables the team to tackle a wider variety of projects safely and efficiently, offering an excellent return on investment.

• A Standard Tool for Professional Rigging Practices:​ The use of appropriately sized and rated blocks for changing line direction is a fundamental principle of professional rigging. It demonstrates an understanding of mechanical principles, a commitment to equipment care, and a proactive approach to worksite safety and efficiency. It is a hallmark of a professional and well-equipped electrical or utility construction team.