Upgrade The OPGW: Double Pulley Block for Seamless Fiber Optic Cable Replacement
The OPGW Double Pulley Block for Fiber Optic Cable Replacer is a specialized pulley block system used in the installation and replacement of Optical Ground Wire (OPGW) fiber optic cables on overhead power lines. This equipment is designed to facilitate smooth, safe, and controlled payout and tensioning of OPGW cables during stringing operations.
- Transmission Line Wire Cable Conductor Tension Stringing Equipment
- Transmission Conductor Tension Stringing Equipment For Overhead Power Lines
- Tools For Power Lines,Substation,Electrical Construction & Maintenance
- Electric Power Transmission Distribution Line Construction Machine Tools
- Overhead Power Transmission Distribution Line Repair Hardware Fittings
- Underground Cable Laying Pulling Installation Equipment Machine Tools Accessories
- Information
- Video
The OPGW Double Pulley Block for Fiber Optic Cable Replacer is a specialized pulley block system used in the installation and replacement of Optical Ground Wire (OPGW) fiber optic cables on overhead power lines. This equipment is designed to facilitate smooth, safe, and controlled payout and tensioning of OPGW cables during stringing operations.
-
: Features two pulleys (sheaves) that guide the OPGW cable, reducing friction and mechanical stress on the cable during installation or replacement.
-
: Used primarily for fiber optic cable stringing and replacement on transmission towers, ensuring the cable moves smoothly through the pulleys without damage.
-
: The pulley groove width is designed to be at least equal to or larger than the cable diameter, often lined with an elastic buffer layer (e.g., chloroprene rubber) to prevent cable surface damage and reduce wear on the outer stranded wire.
-
: The pulley diameter and curvature maintain the cable’s minimum bending radius (typically about 20 times the cable diameter) to protect the delicate optical fibers inside from bending stress.
-
: Pulleys are usually grounded along with the tower to prevent electrical hazards during installation.
-
: Pulleys are well-lubricated and maintained to ensure free rotation and minimal cable wear.
-
: Often combined with pulling grips, tensioners, anti-twisting devices, self-gripping clamps, and pulling ropes to form a complete OPGW installation system.
-
-
The double pulley block is part of the standard OPGW installation toolkit, which includes tension machines, pulling ropes, swivel connectors, and clamps.
-
It helps guide the cable over towers and through difficult spans, ensuring the fiber optic cable is not twisted or kinked.
-
The system is essential for maintaining the integrity of the optical fibers during the stringing or replacement process.
| Feature | Description |
|---|---|
| Type | Double pulley block (two sheaves) for OPGW cable |
| Purpose | Guide and support OPGW fiber optic cable during stringing |
| Cable Diameter Compatibility | Groove width ≥ cable diameter, with elastic buffer layer |
| Minimum Bending Radius | Maintains ≥ 20× cable diameter to protect fibers |
| Material and Construction | Durable, smooth-edged pulleys with rubber lining |
| Grounding | Pulleys grounded with tower for electrical safety |
| Usage | OPGW cable installation, replacement, and tensioning |
-
Pulley groove should be coated with chloroprene rubber or similar elastic buffer to increase wear resistance and protect cable surface.
-
The pulley gap should be less than 10 mm to avoid cable jamming or damage.
-
Pulleys must be lubricated and inspected regularly to ensure smooth operation and reduce wear on cable outer strands.
-
The pulley block is used in conjunction with other OPGW installation equipment such as pulling grips, tensioners, and self-gripping clamps to ensure a safe and efficient cable replacement process.
In conclusion, the OPGW Double Pulley Block is a critical component in the fiber optic cable replacement and installation process, designed to protect the cable integrity while facilitating smooth and safe cable handling on overhead power lines.
