A Fiber Optic Cable Duct Joint Support Fixing Frame is a steel or modular bracket system designed to securely hold fiber optic duct joints, preventing sagging and maintaining proper bend radius for reliable network performance.

Purpose and Function

The fixing frame is used to support fiber optic duct joints at connection points, ensuring that splices and cables remain stable and protected from mechanical stress, vibration, or environmental factors. It helps maintain the minimum bend radius of fiber cables, which is critical to prevent signal loss or damage. These frames are commonly used in underground, aerial, and direct-buried duct systems .

Design and Materials

• Material: Typically made of steel for durability and load-bearing capacity, sometimes with protective coatings to resist corrosion .
• Snap-on or adjustable brackets: Many frames feature modular snap-fit joints or adjustable mounting brackets to allow rapid deployment and flexible positioning within the duct .
• Mounting hardware: Standard fixing uses M6x16 bolts, nuts, and star washers to secure the frame to the duct at any desired position .

Installation Guidelines

1. Positioning: Place the first and last support stands approximately 500mm from each end of the duct section to prevent sagging .
2. Leveling: Use a spirit level to ensure the frame is horizontal and aligned with adjacent duct sections .
3. Securing: Tighten nuts and bolts to lock the frame in place. Snap-on covers or clips may be used for additional protection .
4. Deburring: Ensure all cut edges of the duct are smooth to avoid damaging fiber cables during installation .
5. Compatibility: Frames are designed to fit a variety of duct sizes and can be mounted on walls, ceilings, or within racks depending on the network layout .

Benefits

• Prevents cable sagging and mechanical stress.
• Maintains fiber bend radius, reducing signal attenuation.
• Allows modular and flexible installation, adaptable to different duct configurations.
• Enhances long-term durability and ease of maintenance for fiber optic networks . Using a properly installed fiber optic duct joint support fixing frame ensures network reliability, safety, and compliance with industry standards, making it an essential component in modern fiber optic infrastructure.