Cable bridge application and many occasions, also plays its own role, the use effect is very good, then some users will ask how to install cable bridge in the shaft smoothly? Let's take a look at the method of erection.
After ji 'nan cable bridge is in place, the cable can be laid. According to the design requirements, the cables to be laid in the bridge should be neatly placed and arranged. Try to avoid crossing. Laying should be fixed according to the appropriate distance, and timely installation of signs. Cable terminals and marks shall be installed at both ends of the shaft, and line numbers shall be indicated on marks. If there is no serial number, the cable model, specification and origin should be indicated: clear writing, not easy to fall off, uniform specification, corrosion resistance, hanging company. Leave extra cable lengths at terminals and connectors.
When cables enter shafts, panels and pipes, the inlet and outlet should be closed and the pipe openings sealed. For the cable laid with hemp skin in the wellbore, the hemp skin should be peeled off, and the armored anti-corrosion treatment should be done. After the cable bridge passes the shaft, it is sealed tightly with a fireproof pillow. In the construction of the structure, the embedded parts embedded in the bottom of the floor are used to fix the fireproof partition, and the fireproof partition is made of 4mm thick steel plate.
There are three specifications of the fire pillow, of which type I is 32O×120×25, type II is 160×120×25, and type III is 160×75×25. The size of the reserved hole and the size of the bridge should be selected according to the size of the type of the fire pillow. When placing fire pillows on the fire partition, they should be neatly placed and close to the cable, so that the gap between the fire pillows and the cable is not more than 1cm, and the thickness of the fire pillows should not be too large. Less than 24 cm.
In addition, if a suspended support column can be used as a cable trough to lay cables in the ceiling, the cables within the jurisdiction of each support column can be routed without a cable trough, but should be bundled. Cable sheath should be flame retardant, cable selection should meet the design requirements. Should not be squeezed and damaged by external forces.
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