B1-level flame-retardant cable

Abstract

The invention provides a B1-level flame-retardant cable, and belongs to the field of cables. The B1-level flame-retardant cable comprises an outer sheath, a plurality of flame-retardant wire core thermal deformation parts and a tensile rope. The outer sheath is made of a flame-retardant material and is flat, and the corner of the side wall of the outer sheath is provided with an inner bending part; the plurality of flame-retardant wire cores are arranged in the outer sheath and are arranged along the long axis of the outer sheath; the thermal deformation part is arranged along the inner wall of the inner bending part and is suitable for expanding the inner bending part after being heated; the tensile rope has an electrothermal effect, is arranged in the inner bending part, is in heat conduction connection with the thermal deformation part, and is suitable for heating the thermal deformation part, the tensile rope is electrified to heat the thermal deformation part, the original structure of the cable is fully utilized, and the thermal deformation part is heated to deform to open the inner bending part of the outer sheath, so that the inner space of the outer sheath is enlarged, and the side wall is separated from the wire core. And the pulling resistance of the cable core is reduced, so that the damaged flame-retardant cable core can be conveniently pulled out, and a new flame-retardant cable core can be inserted, thereby realizing replacement of a single cable core without replacing the whole cable, and reducing the cost.

Description

technical field [0001] The present application belongs to the technical field of cables, and more specifically, relates to a B1-level flame-retardant cable. Background technique [0002] Traditional cables generally have multiple cores built in to transmit different currents or signals. However, when one of the cores in the cable is damaged, the entire cable needs to be replaced, resulting in other intact cores being discarded at the same time, resulting in waste. However, due to the high cost of flame-retardant cables, direct replacement of the entire cable will lead to higher maintenance costs for enterprises. SUMMARY OF THE INVENTION [0003] In view of this, the embodiments of the present application provide a B1-level flame-retardant cable to solve the technical problem in the prior art that the entire cable needs to be replaced after the wire core is damaged. [0004] In order to achieve the above purpose, the technical solution adopted in this application is to pr...

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Problems solved by technology

[0003] In view of this, the embodiment of the present application provides a B1-class flame-retardant cable to solve the technical problem in the prior art that the entire cable needs to be replaced after the core is damaged

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