Mobile optical cable hanging and laying

Aerial fiber optic cables can be deployed using fixed pulley traction or mobile release methods, with careful handling, route planning, and safety measures to ensure efficient and damage-free installation.

Methods of Aerial Cable Laying

1. Fixed Pulley Traction Method This method involves using large pulleys at the start and end poles and small guide pulleys every 10–20 meters along the route. A pull rope is threaded through the guide pulleys and attached to the fiber optic cable. The cable is gradually released either manually by pushing the cable tray or mechanically using a traction machine. The tensile force should act mainly on the cable's reinforcement to prevent fiber damage, and auxiliary personnel may assist at intermediate poles to guide the cable safely . 2. Mobile Release (Cable Disk) Method In this approach, the fiber optic cable is placed on a cable disk or tray, which is mounted on a truck. One end of the cable is fixed to the pole's hanging wire, and the cable is gradually pushed along the overhead route. The cable is suspended on the hanging wire and fixed at each pole after deployment. This method is simple and fast but requires road access for the truck and a clear path along the pole route .

Equipment and Materials

• Pulleys: Large pulleys for cable ends and small guide pulleys along the route.
• Cable trays or disks: Used to hold and release the cable gradually.
• Traction machines: For mechanical deployment, placed at the collection end with auxiliary machines along the route.
• Self-supporting cables (ADSS or figure-8): These combine a messenger strand and fiber core, allowing rapid one-step installation and durability .
• Protective gear: Hard hats, gloves, steel-toed boots, and safety harnesses for personnel working at height .

Route Planning and Safety

• Survey the route and check ground conditions.
• Obtain necessary permits for pole use and traffic coordination.
• Ensure the hanging wire is below other utility lines and the road width allows vehicle access if using trucks.
• Avoid obstacles along the aerial path and maintain proper tension to prevent cable sag or damage .
• Follow proper cable handling procedures: drums should be upright, secured, and moved carefully to prevent kinks or damage .

Deployment Tips

• Divide long cable reels into sections to manage tension and prevent fiber stress.
• Gradually tighten the pull rope at the traction end to control cable release.
• Use auxiliary personnel at corners or intermediate poles to guide the cable.
• Ensure slack storage and splice points are planned for easy access during installation . By following these methods and precautions, mobile optical cable laying and hanging can be performed efficiently, safely, and with minimal risk of damage to the fiber or personnel.