一．What’s wire mesh cable tray?
Grid cable tray as its name, the cable supporting style into the basket format, the industry is also called the wire mesh cable supporting system , its material is metal-steel wire. The wire welding machine is turned into a grid, and the surface treatment is carried out to produce the grid cable tray.
There are three main categories of grid bridge: stainless steel grid bridge, hot dip zinc grid bridge and galvanized wire mesh cable supporting system (also known as electric galvanized wire mesh cable supporting system). The grid bridge produced by stainless steel is the cheapest wire mesh cable supporting management in its product category. Galvanized grid wire mesh cable supporting system is to deposit a layer of zinc on the surface of the original grid bridge using the principle of electroplating, so as to prevent corrosion and interference of the bridge. The hot-dip zinc wire mesh cable supporting system production process is the most complex, the steel wire is put into 600℃ ammonium perchloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then sent into the hot-dip plating tank. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Widely used in automobile, construction, home appliances, chemical industry, machinery, petroleum, metallurgy, light industry, transportation, electric power, aviation and ocean engineering and other fields.
二．the technical specification for wire mesh cable tray
The tensile, yield and other mechanical properties of the weld should not be lower than the mechanical properties of the body material. Weld surface should be uniform. There should be no defects such as welding leakage, crack, slag inclusion, burn through, arc pit, and should meet the current national standard “Steel structure engineering construction quality acceptance Code” GB50205 level three requirements. Low temperature MIG process should be adopted for welding galvanized steel plate.
Color coated steel plate pallets and ladder frames shall not be manufactured by any production process that may cause coating damage. The surface of the plates shall be protected by film during processing, and the incision sections and openings shall be repaired by coating measures or sealed protective parts. The riveting of color coated steel plate should adopt non-destructive technology, and the riveting point should be firm.
The welding points of the mesh metal cable bridge should not be sintered or welded slag, and the steel wire section should be flat and free from sharp burrs and bumps. The welding point between each two cross steel wires in the metal mesh should be able to withstand a pulling force of not less than 5000N, and each welding point on the edge of the metal mesh should be able to withstand a pulling force of not less than 4000N. After the test, there should be no visible cracks at the welding points.
The connection resistance of steel pallets and ladder joints should not exceed 50mQ.
When composite coating is used for anti-corrosion of cable supporting management , in order to ensure electrical continuity, zincized 65 manganese steel outer serrated lock gaskets should be used between fasteners and composite coating.
三. Features:
1, improve the system upgrade and maintenance capabilities, leaving room for upgrades.
2, in the integrated wiring system can be flexibly applied, suitable for the wiring bridge up and down the line.
3, line and equipment maintenance is very fast and safe.
4, save the expensive cost of double investment.
5, the weight is only 1/5 of the traditional bridge.
6, save 2/3 installation time than the traditional bridge.
7, the wiring system and the surrounding production environment are cleaner, hygienic and beautiful.
8, the network mechanism makes it better heat dissipation, effectively extend the service life of the cable.
How to install cable grid bridge
Cable grid bridge plays a very important role in daily life, but how is it installed?
1. The length of the cable grid bridge made of linear forged steel is 30m, and when the length of the aluminum alloy or FRP grid bridge exceeds 15m, a expansion joint needs to be set up, and the cable grid bridge crosses the building to form a joint and set up a compensation device.
2. The power grid bridge should be set up and supported in the following places.
A. At both ends of the grid bridge joint 0.5m;
b. 1.5-3m of the inner tube building;
c, turning point;
d, vertical bridge every 1.5m;
3, the installation of the support hanger to maintain vertical or neat, firm and skewed phenomenon.
4. There is no omission in fixing and fastening the connecting bolts of the grid bridge, and the screw is located on the outside of the grid bridge.
5. The cable grid bridge www.jshaihong.cn should be laid under the flammable and explosive gas pipe and heat pipe.
6, the metal grid bridge and support hanger of the whole plant should not be less than 2 ground or zero.
7, the metal grid bridge between the two ends of the connecting piece should not be less than two bolts with locking nuts or locking washers, and the span between the two ends of the connecting piece should not be less than 4 square millimeters of copper core ground wire.
8, grid bridge installation should meet the following requirements.
a, grid bridge left and right deviation can not be greater than 50mm;
b, grid bridge horizontal deviation per meter can not exceed 2m;
c, the vertical deviation of the grid bridge should not be greater than 3mm.
Post time: Sep-01-2023
