CN203102938U - A kind of tension-resistant, twist-resistant, fire-resistant and rodent-proof flexible cable - Google Patents

Abstract

The utility model discloses a tension-resistant, twist-resistant, fire-resistant, rat-proof flexible cable, which includes a group of conductors, and each group of conductors is covered with mica tape, wrapping layer and insulating layer in turn, and constitutes an insulating core. The insulated wire core is covered with a slip layer, and several insulated wire cores are stranded with a reinforced steel core to form a cable core. The inner sheath is covered with a nylon protective layer and an outer sheath in turn, and a filling layer is provided between the cable core and the glass fiber tape. The utility model is simple in structure, has better anti-torsion ability, tensile ability and fire-resistant characteristics, and has good sliding property between each insulated wire core, is convenient to bend, and is not easy to deform, and effectively prevents the cable from being damaged by rats. The gnawing prolongs the service life of the cable and ensures the safety of the cable.

Description

A kind of tension-resistant, twist-resistant, fire-resistant and rodent-proof flexible cable

technical field

The utility model relates to the field of electric wires and cables, in particular to a tension-resistant twist-resistant, fire-resistant, rat-proof flexible cable.

Background technique

With the rapid development of power industry and urban construction, all walks of life have higher and higher requirements for cables. Most of the traditional cables use structures with poor heat insulation and are not resistant to flames. Therefore, in the event of a fire, this type of cable is not resistant to flame baking, and it is difficult to isolate the flame, so the flame can easily ablate these protective layers, so that the cable is directly burned by the flame, causing the cable to fail to work due to a short circuit. It is easy to be bitten by mice, has insufficient twist resistance and tensile strength, is not easy to bend, and is easily deformed by twisting and bending, resulting in a shortened service life of the cable.

Utility model content

The purpose of this utility model is to provide a tensile-resistant, twist-resistant, fire-resistant, and rat-proof flexible cable to solve the problem that the traditional cables in the prior art are easy to be bitten by mice, have insufficient twist resistance and tensile strength, are not easy to bend, and have low fire resistance. Poor, it is easy to be twisted, bent and burned by flames during use, resulting in shortened cable life and short-circuit problems.

In order to achieve the above object, the technical solution adopted by the utility model is:

A tensile-type, twist-resistant, fire-resistant, rodent-proof flexible cable, including a group of conductors, is characterized in that: each group of conductors is covered with a mica tape, a wrapping layer and an insulating layer in turn, and constitutes an insulated core. The wire core is covered with a slip layer, and several insulated wire cores are stranded with a reinforced steel core to form a cable core. The cable core is covered with a glass fiber tape, and the glass fiber tape is covered with a cross braided structure The inner sheath is covered with a nylon protective layer and an outer sheath in sequence, and a filling layer is provided between the cable core and the glass fiber tape.

The above-mentioned tensile-type, twist-resistant, fire-resistant and rodent-proof flexible cable is characterized in that: the sliding layer is a polymer material film layer with a low coefficient of friction.

The tensile-type, twist-resistant, fire-resistant, rodent-proof flexible cable is characterized in that: the outer sheath is made of nitrile rubber.

The beneficial effects of the utility model are:

The utility model has a simple structure, and the inner sheath adopts the design of cross braiding, and the cross braiding structure has a large stretching space, which effectively improves the anti-torsion ability of the cable; adopts the design of setting a mica tape outside the conductor, which effectively improves the strength of the cable. Excellent fire-resistant characteristics; the design of several insulated wire cores and reinforced steel cores is stranded, which effectively improves the tensile capacity of the cable; the design of the nylon protective layer with good hardness and surface smoothness effectively prevents the cable from being damaged. Mouse bites; the design of coating the slip layer on the outside of the insulated wire cores makes the insulated wire cores have good slippage, is easy to bend, and is not easy to deform, prolonging the service life of the cable and ensuring The use of cables is safe.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, a tensile-type, twist-resistant, fire-resistant, rodent-proof flexible cable includes a set of conductors 1, and each set of conductors 1 is covered with a mica tape 2, a wrapping layer 3 and an insulating layer 4 in sequence, and constitutes Insulated wire cores, each insulated wire core is covered with a slip layer 5, several insulated wire cores are twisted with a reinforced steel core 6 to form a cable core, the cable core is covered with a glass fiber tape 7, and the glass fiber tape 7 The outer sheath is covered with an inner sheath 8 composed of cross braiding, the inner sheath 8 is covered with a nylon protective layer 9 and an outer sheath 10 in turn, and a filling layer 11 is provided between the cable core and the glass fiber tape 7 .

The sliding layer 5 is a polymer film layer with a low friction coefficient, and the outer sheath 10 is made of nitrile rubber.

Claims (3)

1. fire-resistant protection against rodents flexible cable of tensile type warp resistance, include the array conductor, it is characterized in that: every group of conductor all is coated with mica tape, lapping layer and insulating barrier outward successively, and formation insulated wire cores, every eradication edge core is coated with glide lamella, several insulated wire cores constitute cable core with the stranded back of reinforcement steel core, described cable core is coated with glass fiber tape, described glass fiber tape is coated with the inner sheath that interlacing constitutes, described inner sheath is coated with nylon overcoat and oversheath outward successively, is provided with packed layer between described cable core and the glass fiber tape.

2. the fire-resistant protection against rodents flexible cable of a kind of tensile type warp resistance according to claim 1 is characterized in that: described glide lamella is the macromolecule material film layer of low-friction coefficient.

3. the fire-resistant protection against rodents flexible cable of a kind of tensile type warp resistance according to claim 1 is characterized in that: described oversheath adopts acrylonitrile-butadiene rubber to make.