Cable trays are divided into slot type, tray type, ladder type, galvanized cable tray mesh format, and other structures, which are composed of brackets, brackets, and installation accessories. The bridge in the building can be erected independently or attached to various buildings (structures) and pipe rack supports. It should reflect the characteristics of simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts need to be galvanized and installed in the outdoor bridge outside the building.
Bridge design The weak current system of an intelligent building usually consists of multiple information monitoring and communication facilities such as building automation, office automation, communication automation, and other corresponding systems. In addition to the necessary information monitoring for the power supply, water supply and drainage, air conditioning, elevators, parking lots, and other facilities of the building itself, there are several subsystems such as security automation, fire automation, and other systems to achieve system integration or partial system integration.
The level and content of the building body are determined based on its functional requirements. These systems include different types of cables and wires, some of which are active cables (power supply voltages are generally DC12/24/48V and AC220V). Due to the continuous development of the construction industry, cable trays are also advancing with the times and gaining market recognition and acceptance of the localization efforts of the cable tray industry. The products are made of high-quality cold-rolled steel plates, Products that have received widespread attention are high-quality cold-rolled steel plates, with surface processes such as cold galvanizing, hot galvanizing, electrostatic spraying, fireproof coating, baking paint, etc. The products are widely used in fields such as petrochemical, metallurgy, electric power, school communication, high-rise buildings, etc., with beautiful appearance, strong corrosion resistance, wide versatility, flexible and convenient installation, and a complete range of features.
As a carrier for carrying various types of cable laying, cable trays are subordinate to the needs of wiring, and should also be implemented in accordance with the above principles. Due to the parallel intersection of multiple pipelines in buildings and limited space, especially in large office buildings, financial malls, hotels, stadiums, and other buildings, where information points are dense, cable trays are widely used in vertical shafts and indoor ceilings, in addition to the use of floor trenches and embedded pipes, to provide wiring in different directions. Various cables for weak current systems are classified and placed within the tray, and their routing and installation methods should be based on the requirements of the direction, The location shall be determined based on the building structure and the negotiated location of air conditioning, electrical, and other pipelines. Passive cables cannot be laid side by side with active cables, and are limited by conditions to be laid within the same bridge.
Metal partitions must be used to separate them, and the outgoing cables should avoid plane crossing as much as possible. When the bridge passes through floors, walls, or expansion joints, corresponding holes and positions should be marked on the architectural drawing to avoid temporary drilling due to omission during construction, which may damage the civil structure. In order to prevent electromagnetic radiation interference (EMC), the closure of the bridge should be considered in the design of the bridge.