Distinguishing
(1) Different uses:
1. The bridge is used to lay power cables and control cables, which means that the bridge is used to Of cable.
2. The wire trough is used for laying wires and communication cables, which means that the wire trough is used for routing wires.
3. Line conduits are generally used in branch lines.
(2) Different production materials:
1. The bridge frame is usually galvanized, plastic-sprayed metal or fiberglass to prevent corrosion.
2. According to different materials, wire ducts are divided into many categories. Commonly used ones include environmentally friendly PVC wire ducts, halogen-free PPO wire ducts, halogen-free PC/ABS wire ducts, steel and aluminum and other metal wire ducts, etc. wait.
3. Steel pipes generally used for line pipes.
(3) Different sizes and thicknesses: the bridges are larger; the cable ducts are smaller.
1. The bridge is relatively large, and the wire duct is relatively small;
2. The bending radius of the bridge is relatively large, and most of the wire ducts are turned at right angles;
3. The span of the bridge is relatively large, and the wire trough is relatively small;
(4) The fixing and installation methods are different
In some places, the bridge is not covered; the wire troughs and wire tubes are almost completely It is sealed with a cover;
(5) Cable trough, also known as wire trough, wiring trough, line trough (varies from place to place), is used to standardize wires such as power cords and data cables. Electrical tools for organizing and fixing on the wall or ceiling.
A bridge is a general term for a continuous rigid structural system that is composed of pallets, straight sections of ladder frames, bends, accessories, supports, hangers, etc., and is used to support cables. Wire conduit is a steel pipe used to thread electrical wires.
Extended information
Common types of wiring ducts:
Insulated wiring ducts, push-open wiring ducts, mini wiring ducts, separated wiring ducts, interior wiring ducts, integrated insulated wiring ducts, telephone wiring ducts, Japanese telephone wiring ducts, open wire wiring ducts, round wiring ducts, partition wiring ducts for exhibitions, round floors Wiring duct, soft round floor wiring duct, covered wiring duct).
International certification of wire trunking: UL American electrical certification, CSA Canadian standard certification, CE, European low voltage equipment certification, DVE, German electrical and electronic information inspection certification, ROHS international environmental protection certification.
(2) Steps for selecting a bridge frame
1. Determine the bridge width, number of layers, type and spacing of support points, and the distribution of cables on each layer of the bridge frame.
2. Calculate the uniform load (kN/m2) of each layer of cables, and initially determine the model and specifications of the bridge.
3. Calculate the bridge strength based on the maximum total uniformly distributed load value of the cable.
Reference sources
Baidu Encyclopedia - Cable Trunking
Baidu Encyclopedia - Bridge