Code for installation of cable tray classification

2022-07-22
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Generally, cable trays can be laid with fully enclosed cables, which are suitable for laying computer cables, communication cables and control cables of other highly sensitive systems. It has a good effect on shielding interference of control cables and cable protection in heavily corrosive environment

general cable trays can be laid with fully enclosed cables, which are suitable for laying computer cables, communication cables and control cables of other highly sensitive systems. It has a good effect on shielding interference of control cables and cable protection in heavily corrosive environment. The following editor will introduce the installation specifications of cable trays and the classification of cable trays

specification for cable tray installation

I. construction preparation

1. Material preparation

the specification and model of cable tray should meet the design requirements of the on-site construction environment. Check that the inside and outside of the tray should be intact, seamless burr, and there should be no bending, warping, etc. the installation accessories adopt angle steel columns, corbels, brackets, frames, fastening bolts, bolts Nuts and other installation workpieces should be hot-dip galvanized to enhance the service life and prevent corrosion

2. Tool preparation

electric hammers, impact drills, grinders, cutting machines (hacksaws, not electric welding, so as not to damage the zinc coating), pencils, tapes, wrenches, and even electric welding machines are required when installing ladder bridges. These are all necessary tools

II. Installation

1. The maximum load and support spacing of the cable tray should be less than the allowable load and support spacing. No one is allowed to carry people in the installation project. If the on-site environment is really necessary, safety facilities are required to carry people, and unqualified non professionals are not allowed to operate

2. Then fix the surface treated columns, corbel supports, etc. on the wall with expansion bolts (in concrete structures and solid brick walls, not in hollow brick walls), do anti-corrosion treatment for the on-site welding, paint anti-corrosion paint on the site, and try to set the support point of the butt joint between cable trays at about 1/4 of the span when laying cable trays

3. For long-span bridges, it is best to place them on the support frame for docking, and support points should be added separately at the places of bends or tees, and fixed points should be set every 1.5 meters for the vertical corbel

4. Cables in the bridge shall be fixed with tapes or metal cable clips. Cables laid horizontally and installed shall be fixed every 2 meters, and cables laid vertically and installed shall be fixed every 1-1.5 meters

5. Bridges that pass through walls and floors are not allowed to be sealed together with holes. If they pass through firewalls and fire-proof floors, fire isolation measures should be taken

6. When the bridge is installed vertically outdoors in the construction environment, passers-by should be prevented from opening the cover plate of the bridge with multiple hands. When customizing the bridge, the supplier should be informed in time to reinforce the butterfly buckle of the bridge

7. When there are few power cables and control cables, they can be laid on the same bridge, and separate bridges are used to lay cables of different grades separately

8. If the construction site requires high corrosive environment, stainless steel and aluminum alloy bridges can be used

III. safety precautions

1. It is necessary to wear safety helmets during construction

2. Check whether the anti-skid rope on your body is stable. When using a stool or ladder, two people are not allowed to operate on it at the same time

3. If the construction needs to make a fire, prepare fire-fighting equipment, obtain the on-site fire use certificate, clean up the surrounding inflammables, and assign special personnel to watch the fire. If there is flame spread, take corresponding measures in time

4. When transporting the bridge installation, pay attention to safety and try to prevent the bridge fire-proof coating and galvanized layer from falling off

classification of cable bridge

1 Cascade cable tray

cq1-t cascade cable tray is improved and designed according to relevant data at home and abroad. It has the advantages of light weight, low cost, unique shape, convenient installation, good heat dissipation, good ventilation and so on. It is suitable for the laying of general cables with larger diameter and for the laying of high and low voltage power cables

2. Tray type cable tray

tray type cable tray is the most widely used in petroleum, chemical industry, light industry, telecommunications and other fields. It has the advantages of light weight, large load, beautiful appearance, simple structure, convenient installation and so on. It is suitable for both the installation of power cables and the laying of control cables

3. Trough cable tray

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

4. Long span cable tray

at present, long span cable tray is generally assembled from pultruded FRP profiles, which is suitable for power cables, control cables, lighting cables and accessories. Compared with the iron bridge, it has the advantages of long service life (the general design life is 20 years), convenient installation and low cost (the proportion is only 1/4 of carbon steel, there is no need for hot work in construction, and the length of a single bridge can reach 8 meters or even longer), convenient cutting and no maintenance

5. Combined cable tray

combined cable tray is a new type of cable tray and the second generation of cable tray series. It is suitable for the laying of various projects, units and cables. It has the characteristics of simple structure, flexible configuration, convenient installation and novel form

editor's summary: that's all for the installation specifications of cable trays and the classification of cable trays. I hope it will be helpful to you. If you want to know more, you can pay attention to information

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