Cable tray is the weak current system of intelligent buildings. Cable tray is divided into trough type, tray type, and ladder type structures, consisting of brackets, brackets, and equipment accessories. When selecting, attention should be paid to whether all components of the bridge frame meet the complete set requirements of serialization, generalization, and standardization.

 

 

The stepped cable tray is improved and planned based on relevant domestic and foreign data. It has the advantages of light weight, low cost, unique design, convenient equipment, good heat dissipation, and good ventilation. He is suitable for laying cables with larger diameters and is suitable for laying high and low voltage power cables.

 

 

 

Tray type cable tray is the most widely used type in petroleum, chemical, light industry, telecommunications, and other fields. It has advantages such as light weight, large load capacity, beautiful design, simple structure, and convenient equipment. It is suitable for both power cable equipment and control cable laying.

 

 

 

Trough type cable tray is a fully enclosed cable tray. It is most suitable for laying control cables for computer cables, communication cables, thermocouple cables, and other highly sensitive systems. It has a good effect on the shielding and disturbance of control cables and the protection of environmental cables in heavy corrosion.

 

 

 

The advantages and disadvantages of ladder type, tray type, and trough type cable trays are as follows: The ladder type busbar tray has excellent ventilation function and is not dustproof or disturbed. The trough type and tray type cable trays have dust-proof and disturbance resistant functions.

 

 

 

At that time, large-span cable trays were generally assembled from extruded fiberglass profiles, suitable for power cables, control cables, lighting cables and accessories, etc. Compared with iron bridge frames, it has advantages such as long service life (generally planned life is 20 years), convenient equipment and low cost (with a proportion of only 1/4 of carbon steel, no need for hot work during construction, and a single bridge frame length of up to 8 meters or even longer), easy cutting, and no need for maintenance