Cable tray is a cable laying equipment that standardizes, serializes and universalizes the laying of wires, cables, and pipelines, which is produced by cable tray roll forming machine. In a computer room project, compared to the expensive high-tech software and hardware, the bridge is very inconspicuous and rarely paid attention to, but it is also an indispensable part of the entire wiring project.
Cable trays can be divided into four types: trough type, tray type, ladder type and net type. At the same time, the equipment is mainly composed of brackets, support arms and installation accessories.
The cable tray has the characteristics of simple structure, beautiful appearance, flexible configuration and convenient maintenance. All parts are galvanized and installed on the outdoor bridge outside the building.
The following will mainly introduce you to the installation precautions of the cable tray, hoping to help you better understand the use of this equipment.
1) Visual inspection
When the cable tray enters the construction site, the following materials shall be submitted, the product factory certificate, the regular inspection report of the provincial and municipal quality supervision station and the relevant technical appraisal documents, and the thickness of the cable tray plate shall meet the relevant requirements.
The coating surface of the hot-dip galvanized cable tray should be uniform and free of defects such as overburning, ash hanging, and partial non-galvanizing.
Electrostatic spraying should be flat, smooth, uniform, without skin, no bubbles, blisters, the inner wall should be smooth, no burrs, and the weld surface of the bridge should be uniform, and there should be no leaks, cracks, burn through, etc.
2) Installation position of cable tray
When the bridge is laid horizontally, the height from the ground should not be less than 2.5m. When the bridge is laid in multiple layers, for the needs of heat dissipation, maintenance and anti-interference, a certain distance should be left between the bridge layers.
When the cable tray is laid in parallel with various pipes, the clear distance should meet the relevant regulations.
3) Installation of supports and hangers
The quality of the support and hanger of the cable tray should meet the current relevant technical standards. When the cable tray is laid horizontally, the supporting span is generally 1.5~3m. When laying vertically, the fixed spacing should not be greater than 2m. The horizontal height difference between two adjacent bridge support arms. It should not be greater than 10mm, and the vertical deviation of the vertical centerline of the two adjacent bridge support arms should not be greater than 20mm.
The above is the installation instructions for the cable tray. If you want to know more about the cable tray, you can also learn about the cable tray forming machine.