CN201594411U - Railway signal cable with metal pipe armor layer - Google Patents

Abstract

A railway signal cable with a metal pipe armor layer comprises a cable core and an outer sheath, wherein a plurality of lead wire groups are arranged in the cable core, and an inside liner and a metal pipe armor layer are arranged between the cable core and the outer sheath in sequence. As the metal pipe armor layer is solid and has little possibility of deformation, the railway signal cable has higher tensile strength and better bending resistance, can conform to the operating requirements in railway industry, and can prolong the service life of cables.

Description

Railway signal cable with metal tube armour

Technical field

The utility model relates to a kind of telecommunication cable, especially the signal cable of railway systems use.

Background technology

Existing railway signal cable, its armour is generally wrapped and make outside cable core with steel band, the difficult control of lap width when wrapped between the steel band, change easily, even phenomenons such as bag, distortion are taken off in generation, its tensile strength, bending resistance were difficult to adapt to instructions for use, sensitive for damages when cable was used in railway systems.

Summary of the invention

In order to overcome the deficiency of existing railway signal cable, the utility model provides a kind of railway signal cable with metal tube armour, its armour can not take off bag, distortion, cable has advantages of higher tensile strength and bending resistance preferably, can adapt to the instructions for use in railway systems, prolong the useful life of cable.

The railway signal cable with metal tube armour that the utility model provides comprises cable core and oversheath thereof, and cable core contains several lead groups, is provided with inner covering and metal tube armour between cable core and oversheath successively.

Metal tube armour of the present utility model can be made like this: adopt the argon arc welding continuous welding process with galvanized steel strip or chromium plating steel band, zinc-plated steel band, stainless steel band, tin bronze band, vertically be welded into pipe outside inner covering, make the metal tube armour.

The beneficial effects of the utility model are: the metal tube armour is firm, not yielding, and cable has advantages of higher tensile strength and bending resistance preferably, can adapt to the instructions for use in railway systems, prolongs the useful life of cable.

Description of drawings

Fig. 1 is a cross sectional representation of the present utility model, and Fig. 2 is a longitudinal section of the present utility model schematic diagram.

In Fig. 1, Fig. 2,1, lead, 2, the lead group, 3, cable core, 4, inner covering, 5, the metal tube armour, 6, oversheath.

Embodiment

With reference to Fig. 1, Fig. 2, when making the utility model, at first will be by the stranded together cable core 3 of making of several lead groups 2 that lead 1 is formed, outside cable core 3, coat the inner covering of making by polyethylene 4 then, using through the galvanized steel strip behind the embossing adopts the argon arc welding continuous welding process vertically to be welded into pipe outside inner covering 4 again, make metal tube armour 5, adopt cable jacket material outside metal tube armour 5, to coat oversheath 6 at last, promptly make the utility model.

Claims (1)

1. the railway signal cable with metal tube armour comprises cable core and oversheath thereof, and cable core contains several lead groups, it is characterized in that being provided with successively between cable core and oversheath inner covering and metal tube armour.

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