Low-smoke halogen-free coal mining machine shielding rubber flexible cable

Abstract

The invention discloses a low-smoke halogen-free coal mining machine shielding rubber flexible cable, and relates to the technical field of a cable. The low-smoke halogen-free coal mining machine shielding rubber flexible cable comprises a thermoplastic polyolefin sheath, power cables and control cores, wherein the power cores is formed in such a way that an insulation shielding layer extrudes a second halogen-free EP rubber insulation layer and the second halogen-free EP rubber insulation layer wraps a core formed by twisting type-six tin-coated anoxic soft copper conductors, extruded by a conductor isolation layer; each control core is formed by extruding a cable core wrapped by a low-smoke halogen-free polyolefin wrapping layer by a first thermoplastic polyolefin sheath, and each cable core is formed by wrapping type-six tin-coated anoxic soft copper conductors extruding aramid fiber cores by a first halogen-free EP rubber insulation layer; and the first thermoplastic polyolefin sheath is internally provided with nylon wire braid, then the plurality of power cores and the control cores are wrapped, and a ground core is arranged between the power cables and the control cores. The low-smoke halogen-free coal mining machine shielding rubber flexible cable is reasonable in design, is applied to an indoor place of a coal mining region and has the advantages of good low-smoke performance, corrosion resistance, flame resistance and long service life.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a low-smoke and halogen-free shearer shielded rubber-sheathed flexible cable. Background technique [0002] With the continuous development of coal mining areas, the scope of people's activities in underground coal mining areas is becoming wider and wider. The safety of underground personnel needs to be effectively guaranteed. The root cause of the fire lies in the generation of carbon monoxide (CO) poisonous gas and subsequent The heat release of CO2 is produced during the process, so some methods are used to control the heat release. The severity of the fire depends on the success rate of people leaving the fire scene. The irritation and toxicity of the smoke are the main factors restricting the escape from the fire scene. Therefore, for The smoke, poison, and corrosion produced during combustion should be given priority. In other words, it is imperative to completely abandon th...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of coal mining areas, the scope of people's activities in underground coal mining areas is becoming wider and wider. The safety of underground personnel needs to be effectively guaranteed. The root cause of the fire lies in the generation of carbon monoxide (CO) poisonous gas and subsequent The heat release of CO2 is produced during the process, so some methods are used to control the heat release. The severity of the fire depends on the success rate of people leaving the fire scene. The irritation and toxicity of the smoke are the main factors restricting the escape from the fire scene. Therefore, for The smoke, poison, and corrosion produced during combustion should be given priority. In other words, it is imperative to completely abandon the production and production of halogen substances. Some large-scale exploration and mining equipment and mechanical equipment are also used more and more. While connecting these equipment Wires and cables with high performance such as low smoke concentration, halogen-free, and flame retardancy provide a strong guarantee for their normal use. At present, the common shearer cables mainly use chlorinated polyethylene or neoprene protective layer. Because these rubbers contain a lot of chlorine, they tend to produce high-concentration smoke and toxic gases when burned, which increases personal injury in the event of a fire underground.

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