CN213241976U - Flexible low-voltage cable - Google Patents

Abstract

The utility model belongs to the technical field of cables, in particular to a flexible low-voltage cable, which comprises an outer sheath and a first lead, wherein the outer sheath comprises a protective layer, a shock-absorbing layer and a stretching layer which are arranged from outside to inside in sequence, and the shock-absorbing layer is arranged between the protective layer and the stretching layer; the outer part of the first lead is sleeved with a lead sleeve, a cavity is arranged between the lead sleeve and the stretching layer, a flexible partition plate is arranged in the cavity, the side edge of the flexible partition plate is fixedly connected with the stretching layer and the lead sleeve respectively, the flexible partition plate divides the cavity into a plurality of cavities, a flame-retardant block and a second lead are arranged in each cavity, the flame-retardant block is arranged on one side, close to the stretching layer, of the second lead, and fixed fillers are filled in the cavities; the utility model increases the wear resistance of the cable, and through arranging the shock absorbing layer and the stretching layer, the cable has good shock resistance and stretch resistance, and the service life of the cable is prolonged; through setting up fire-retardant piece, make the cable have the fire resistance, avoid the cable to take place the spontaneous combustion and lead to causing other harm.

Description

Flexible low-voltage cable

Technical Field

The utility model belongs to the technical field of the cable, concretely relates to flexible low tension cable.

Background

The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, and is used for transmitting power or information from one place to another place. The cable is classified into a power cable, a control cable, a compensation cable, a shield cable, a high temperature cable, a computer cable, a signal cable, a coaxial cable, a fire resistant cable, a marine cable, a mining cable, an aluminum alloy cable, and the like. In some specific use places, due to the limitation of construction space, the cable needs to have certain flexibility degree and can better adapt to narrow and curved space.

The flexible low-voltage cable on the market at present has low performances such as wear resistance, impact resistance, tear resistance and the like, so that the service life of the cable is greatly shortened, and the cable which is not partially provided with fire resistance is very easy to cause dangerous accidents such as spontaneous combustion or explosion under certain high-temperature conditions.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, and provides a flexible low-voltage cable, which has excellent wear resistance, impact resistance and tearing strength through the multilayer structure design of the cable outer sheath; the flame retardant material and the shunt wires are arranged, so that current concentration is reduced, the wires are prevented from being overheated, the cable has an excellent flame retardant function, and spontaneous combustion or explosion is prevented.

The technical scheme of the utility model is that:

a flexible low-voltage cable is characterized by comprising an outer sheath and a first lead, wherein the outer sheath comprises a protective layer, a shock-absorbing layer and a stretching layer which are sequentially arranged from outside to inside, and the shock-absorbing layer is arranged between the protective layer and the stretching layer; the outer part of the first lead is sleeved with a lead sleeve for insulation, a cavity is arranged between the lead sleeve and the stretching layer, a plurality of flexible partition plates which are uniformly distributed are arranged in the cavity, two side edges of each flexible partition plate are fixedly connected with the stretching layer and the lead sleeve respectively, the flexible partition plates divide the cavity into a plurality of cavities, each cavity is internally provided with a flame-retardant block and a second lead, the flame-retardant block is arranged on one side, close to the stretching layer, of the second lead, and fixed fillers are filled in the cavities.

Furthermore, a plurality of anti-friction lugs are uniformly arranged on the outer side wall of the protective layer.

Furthermore, the layer of moving away to avoid possible earthquakes encircles by a plurality of semicylinder rubber strip circumference and forms, the fixed cover of layer of moving away to avoid possible earthquakes is established on the tensile layer.

Furthermore, the flame retardant block is of an arc-shaped structure, and the flame retardant block is close to the second lead and wraps the second lead in a half mode.

Further, the flexible partition plates are provided with four flexible partition plates, and are arranged in a cross shape.

Furthermore, the flame retardant block is made of a halogen-free flame retardant material.

The utility model has the advantages that:

1. the utility model increases the wear resistance of the cable by arranging the convex block on the protective layer, and enables the cable to have good impact resistance and tensile resistance by arranging the shock absorbing layer and the tensile layer, thereby prolonging the service life of the cable;

2. through the arrangement of the multiple leads, the current in the cable can be effectively shunted, the heat concentration of the leads is reduced, and the cable is prevented from spontaneous combustion due to internal overheating;

3. the utility model discloses a set up and have not steamed flame retardant block, make the cable have good fire resistance, cause other harm when avoiding the cable to take place the spontaneous combustion.

Drawings

Fig. 1 is a schematic structural diagram of a cable according to the present invention;

in the figure, 1, a protective layer; 2. a shock absorbing layer; 3. a tensile layer; 4. a flexible divider plate; 5. fixing the filling material; 6. a flame retardant block; 7. a first conductive line; 8. a second conductive line; 9. a wire guide sleeve; 10. and (4) a bump.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer, the present invention will be further described with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

It is to be understood that the terms "inside, outside, and the like refer to orientations and positional relationships based on those shown in the drawings, and are used merely to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1, the utility model relates to a flexible low-voltage cable, which comprises an outer sheath and a first lead 7, wherein the inner part of the outer sheath is of a hollow structure; the outer sheath comprises a protective layer 1, a shock absorbing layer 2 and a stretching layer 3 which are sequentially arranged from outside to inside, wherein the shock absorbing layer 2 is arranged between the protective layer 1 and the stretching layer 3; the protective layer 1 is arranged on the outermost side of the outer sheath and plays a primary role in protecting the cable, the shock absorbing layer 2 is made of rubber semicircular column strips, so that excellent compression resistance effect and shock resistance can be achieved, damage to wires inside the cable caused by external impact of the cable can be effectively relieved, and the stretching layer 3 is arranged on the innermost side of the outer sheath and has good toughness and tensile resistance; the first lead 7 is arranged in the inner cavity of the outer sheath, a lead sleeve 9 for insulation is wrapped outside the first lead 7 and used for protecting the first lead 7 against electric leakage, a cavity is reserved between the lead sleeve 9 and the stretching layer 3, four flexible partition plates 4 distributed in a cross shape are arranged in the cavity between the lead sleeve 9 and the stretching layer 3, the flexible partition plates 4 evenly divide the cavity between the lead sleeve 9 and the stretching layer 3 into four cavities, each cavity is provided with a flame-retardant block 6 and a second lead 8, the flame-retardant block 6 is arranged on one side of the second lead 8 close to the stretching layer 3, the flame-retardant block 6 is in an arc shape, one side close to the second lead 8 is also provided with a notch, the second lead 8 corresponds to the notch on the flame-retardant block 6, the flame-retardant block 6 wraps the second lead 8 in half, and meanwhile, the flame-retardant blocks in the four divided areas form a large arc, and will wrap up first wire 7, through setting up fire-retardant piece 6, can wrap up first wire 7 and second wire 8 are whole, and effectual inside flame retardant efficiency that plays of cable prevents the cable spontaneous combustion.

In the cable, the flame-retardant block 6 and the second lead 8 are filled with the fixed filler 5 in the hollow area outside the occupied space of the cavity, the whole cavity is filled with the fixed filler 5, and then the positions of the flame-retardant block 6, the first lead 7 and the second lead 8 are fixed, so that the internal structure of the cable is prevented from deviating or deforming in the laying process.

Further, a plurality of small wear-resistant bumps 10 are uniformly arranged on the outer side wall of the protective layer 1, and the wear resistance of the surface of the cable is improved by arranging the small bumps 10.

Furthermore, in the embodiment, the material of the flame retardant block 6 is a halogen-free flame retardant material, which has the advantages of good impact resistance, wear resistance, small friction coefficient, and the like, and the halogen-free flame retardant material is non-volatile during combustion, does not generate corrosive gas, is a pollution-free flame retardant, and can protect the environment well.

The design scheme has the advantages that the wear resistance of the cable is improved by arranging the convex blocks on the protective layer, and the cable has good impact resistance and tensile resistance by arranging the shock absorbing layer and the tensile layer, so that the service life of the cable is prolonged; through the arrangement of the multiple leads, the current in the cable can be effectively shunted, the heat concentration of the leads is reduced, and the cable is prevented from spontaneous combustion due to internal overheating; the halogen-free flame-retardant block is arranged, so that the cable has good flame retardance, and other hazards caused by spontaneous combustion of the cable are avoided.

The above is only the embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The flexible low-voltage cable is characterized by comprising an outer sheath and a first lead (7), wherein the outer sheath comprises a protective layer (1), a shock-absorbing layer (2) and a stretching layer (3) which are sequentially arranged from outside to inside, and the shock-absorbing layer (2) is arranged between the protective layer (1) and the stretching layer (3); the outer cover of first wire (7) is equipped with wire cover (9) that are used for insulating, be equipped with the cavity between wire cover (9) and tensile layer (3), be equipped with a plurality of evenly distributed's flexible division board (4) in the cavity, two sides of flexible division board (4) respectively with tensile layer (3) and wire cover (9) rigid coupling, it is a plurality of flexible division board (4) will the cavity is separated for a plurality of cavitys, every all be equipped with fire-retardant piece (6) and second wire (8) in the cavity, fire-retardant piece (6) set up second wire (8) are close to one side of tensile layer (3), it is provided with fixed stopping (5) still to fill in the cavity.

2. Flexible low-voltage cable according to claim 1, characterized in that a plurality of projections (10) for friction resistance are uniformly arranged on the outer side wall of the protective layer (1).

3. The flexible low-voltage cable according to claim 1, wherein the shock absorbing layer (2) is formed by circumferentially surrounding a plurality of semi-cylindrical rubber strips, and the shock absorbing layer (2) is fixedly sleeved on the stretching layer (3).

4. A flexible low-voltage cable according to claim 1, characterized in that said flame retardant block (6) is of an arc-shaped configuration, said flame retardant block (6) being adjacent to said second conductor (8) and semi-wrapping said second conductor (8).

5. Flexible low-voltage cable according to claim 1, characterized in that said flexible partitions (4) are provided in four and in a "cross" arrangement.

6. The flexible low-voltage cable according to claim 1, wherein the flame retardant block (6) is made of halogen-free flame retardant material.

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