Cross-linked polyethylene insulated low-smoke halogen-free flame-retardant power cable special for rail transit

Abstract

The invention discloses a cross-linked polyethylene insulated low-smoke halogen-free flame-retardant power cable special for rail transit. The power cable comprises a conductor, and a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal shielding layer, a water blocking layer, an aluminum-plastic composite belt, an inner protective layer, a steel wire armor layerand an outer protective layer are sequentially wrapped on the outer side of the conductor. By arranging a skin prying plate and rolling wheels, one end of the outer protective layer is clamped and fixed through one-way rotation of the rolling wheels, the outer protective layer is torn and separated in the cutting process, the outer protective layer cannot be broken in the tearing and separating process, and collection and cleaning are easy; an adjusting sliding block and a threaded rod are arranged; the threaded rod is used for adjusting the adjusting sliding block; the adjusting sliding blockmoves in the adjusting sliding groove which is obliquely formed, then the cutting depth of the cutting blade is controlled, it is avoided that due to the fact that a notch is too shallow, the outer protective layer is inconvenient to strip or the internal structure of a cable is damaged due to the fact that the notch is too deep, the stripping time of the outer protective layer of the cable is greatly saved, and meanwhile the risk that workers are injured is reduced.

Description

technical field [0001] The invention relates to a power cable, in particular to a special power cable for cross-linked polyethylene insulation, low-smoke, halogen-free and flame-retardant rail transit. Background technique [0002] A cable is an electrical energy or signal transmission device, usually composed of several wires or groups of wires. In order to protect the conductor inside the cable, if the live conductor is exposed to the environment during use, it is easy to cause harm to the living things near the cable. , to bring them the risk of electric shock, but also easy to cause short circuit and cause fire. Therefore, the outside of the conductor is usually covered with a multi-layer structure to insulate and shield the electromagnetic field. [0003] The outermost skin structure of the cable is usually made of pressure-resistant and wear-resistant materials, and its thickness is also larger than other hierarchical structures. When using cables, it is often necessar...

AI Technical Summary

Problems solved by technology

[0006] (1) How to fix one end of the outer sheath by setting the prying plate and the roller, using the one-way rotation of the roller to clamp and fix the outer sheath, and tear the outer sheath apart during the cutting process, so as to solve the problem of inconvenient separation of the cable skin in the prior art question;

[0007] (2) How to adjust the adjustment sl

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