CN212461193U - Aluminum-core polyvinyl chloride insulation polyvinyl chloride sheath flame-retardant fire-resistant cable - Google Patents

Abstract

The utility model discloses a fire-retardant fire resisting cable of insulating polyvinyl chloride sheath of aluminium core polyvinyl chloride belongs to cable technical field, include: an outer layer having a circular cross-section; the first aluminum core is arranged at the central axis in the outer layer; the four inner layers are arranged in the outer layer in an annular array and are all contacted with the inner side of the outer layer; the multiunit extrusion mechanism of setting between first aluminium core and four inlayers, and the horizontal equidistance setting of multiunit extrusion mechanism, every group extrusion mechanism all includes: the insulating connecting ring is arranged on the circumferential surface of the first aluminum core; the four insulation connecting cylinders are arranged on the circumferential surface of the insulation connecting ring in an annular array and are respectively positioned at the corresponding inner side positions of the four inner layers; the insulation connecting rods respectively and movably penetrate through the four insulation connecting cylinders; the spring is arranged between the insulating connecting rod and the inner wall of the insulating connecting cylinder; the pressure-resistant effect is good, and the insulating property and the protective property are good.

Description

Aluminum-core polyvinyl chloride insulation polyvinyl chloride sheath flame-retardant fire-resistant cable

Technical Field

The utility model relates to the technical field of cables, more specifically say, relate to a fire-retardant fire resisting cable of insulating polyvinyl chloride sheath of aluminium core polyvinyl chloride.

Background

The cable is an electric energy or signal transmission device, generally comprises several or several groups of conducting wires, and is mainly divided into a copper core cable and an aluminum core cable.

Most contain a plurality of cables in the current aluminium core cable, but the connection of a plurality of cables is not very firm, leads to its cable when receiving pressure, can not effectual with pressure dispersion, leads to its resistance to compression effect poor, can't satisfy the user demand.

Meanwhile, the insulation effect and the protection effect of the existing aluminum core cable are not very ideal.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a fire-retardant fire resisting cable of insulating polyvinyl chloride sheath of aluminium core polyvinyl chloride, its resistance to compression effect is good, has good insulating properties and barrier propterty simultaneously.

2. Technical scheme

In order to solve the above problem, the utility model adopts the following technical scheme:

an aluminum-core polyvinyl chloride insulated polyvinyl chloride sheathed flame-retardant fire-resistant cable, comprising:

an outer layer having a circular cross-section;

the first aluminum core is arranged at the central axis in the outer layer;

the four inner layers are arranged in the outer layer in an annular array and are all contacted with the inner side of the outer layer;

the multiunit extrusion mechanism of setting between first aluminium core and four inlayers, and the horizontal equidistance setting of multiunit extrusion mechanism, every group the extrusion mechanism all includes:

the insulating connecting ring is arranged on the circumferential surface of the first aluminum core;

the four insulation connecting cylinders are arranged on the circumferential surface of the insulation connecting ring in an annular array and are respectively positioned at the corresponding inner side positions of the four inner layers;

the insulation connecting rods respectively and movably penetrate through the four insulation connecting cylinders;

the spring is arranged between the insulating connecting rod and the inner wall of the insulating connecting cylinder;

arc-shaped insulating fixture blocks are respectively arranged at the end parts, close to the inner layer, of the four insulating connecting rods, the arc-shaped insulating fixture blocks are connected with the inner layer in a clamping manner, and gaps are formed among the first aluminum core, the four inner layers, the plurality of groups of extrusion mechanisms and the outer layer;

the flame-retardant material filled in the gap has good compression-resistant effect, and has good insulating property and protective property.

As an optimized scheme of the utility model, outer first shielding layer, polyvinyl chloride insulating layer and the outer jacket layer of polyvinyl chloride protection that sets gradually by from interior to exterior constitute, the cladding of polyvinyl chloride insulating layer is on the circumferential surface of first shielding layer, the outer jacket layer cladding of polyvinyl chloride protection is on the circumferential surface of polyvinyl chloride insulating layer.

As an optimized scheme of the utility model, every the inlayer comprises second aluminium core, second shielding layer, polyethylene insulating layer and the polyethylene protection overcoat layer that from interior to exterior set gradually, the second shielding layer cladding is on the circumferential surface of second aluminium core, the polyethylene insulating layer cladding is on the circumferential surface of second shielding layer, the cladding of polyethylene protection overcoat layer is on the circumferential surface of polyethylene insulating layer, polyethylene protection overcoat layer contacts with first shielding layer.

As a preferred scheme of the utility model, the interval between two adjacent groups of the extrusion mechanism is 50-60 cm.

As an optimal scheme of the utility model, adjacent two sets of interval between the extrusion mechanism is 55 cm.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) this scheme is through the setting of extrusion mechanism, and dispersion pressure that can be even when this cable receives pressure effectively prevents that the working part from receiving the striking and taking place the harm.

(2) This scheme is through the setting of skin and inlayer for this cable has good insulating properties, shielding property and protecting effect.

(3) The scheme makes the flame retardant material have good flame retardant property through the arrangement of the flame retardant material.

Drawings

Fig. 1 is a cross-sectional view of an aluminum-core polyvinyl chloride insulated polyvinyl chloride sheathed flame-retardant fire-resistant cable of the present invention;

fig. 2 is a partial perspective view of the flame-retardant and fire-resistant cable with an aluminum core and a polyvinyl chloride insulating polyvinyl chloride sheath of the present invention;

fig. 3 is a partial view of the extrusion mechanism of the flame-retardant and fire-resistant cable with an aluminum core and a polyvinyl chloride insulating sheath of the present invention shown in fig. 2;

fig. 4 is a cross-sectional view of the utility model discloses a fire-retardant fire resisting cable of insulating polyvinyl chloride sheath of aluminium core polyvinyl chloride.

The reference numbers in the figures illustrate:

the outer layer 1, the first shielding layer 11, the polyvinyl chloride insulating layer 12, the polyvinyl chloride protective outer sleeve layer 13, the first aluminum core 2, the extrusion mechanism 3, the insulating connecting ring 31, the insulating connecting cylinder 32, the insulating connecting rod 33, the arc-shaped insulating clamping block 34, the spring 35, the inner layer 4, the second aluminum core 41, the second shielding layer 42, the polyethylene insulating layer 43, the polyethylene protective outer sleeve layer 44 and the flame retardant material 5.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-4, an aluminum-core pvc insulated pvc jacket flame-retardant and fire-resistant cable includes:

the section of the outer layer 1 is circular, the outer layer 1 is composed of a first shielding layer 11, a polyvinyl chloride insulating layer 12 and a polyvinyl chloride protective outer sleeve layer 13 which are sequentially arranged from inside to outside, the polyvinyl chloride insulating layer 12 is coated on the circumferential surface of the first shielding layer 11, the polyvinyl chloride protective outer sleeve layer 13 is coated on the circumferential surface of the polyvinyl chloride insulating layer 12, the first shielding layer 11 has a good shielding effect, the polyvinyl chloride insulating layer 12 has a good insulating effect, and the polyvinyl chloride protective outer sleeve layer 13 has a good protective effect;

the first aluminum core 2 is arranged at the central axis in the outer layer 1;

the four inner layers 4 are arranged in the outer layer 1 in an annular array, the four inner layers 4 are all contacted with the inner side of the outer layer 1, each inner layer 4 consists of a second aluminum core 41, a second shielding layer 42, a polyethylene insulating layer 43 and a polyethylene protective outer sleeve layer 44 which are sequentially arranged from inside to outside, the second shielding layer 42 is coated on the circumferential surface of the second aluminum core 41, the polyethylene insulating layer 43 is coated on the circumferential surface of the second shielding layer 42, the polyethylene protective outer sleeve layer 44 is coated on the circumferential surface of the polyethylene insulating layer 43, the polyethylene protective outer sleeve layer 44 is contacted with the first shielding layer 11, the second shielding layer 42 has a good shielding effect, the polyethylene insulating layer 43 has a good insulating effect, and the polyethylene protective outer sleeve layer 44 has a good protection effect;

the multiunit extrusion mechanism 3 of setting between first aluminium core 2 and four inlayer 4, and multiunit extrusion mechanism 3 horizontal equidistance sets up, and the interval between adjacent two sets of extrusion mechanisms 3 is 50-60 cm, and is preferred, and the interval between adjacent two sets of extrusion mechanisms 3 is 55cm, and every group extrusion mechanism 3 all includes:

an insulating connection ring 31 fixedly disposed on the circumferential surface of the first aluminum core 2;

the four insulating connecting cylinders 32 are fixedly arranged on the circumferential surface of the insulating connecting ring 31 in an annular array, the four insulating connecting cylinders 32 are respectively positioned at the corresponding inner side positions of the four inner layers 4, the insulating connecting ring 31 is used for installing the insulating connecting cylinders 32, the inside of the insulating connecting cylinders 32 is hollow, and a containing groove is formed in the insulating connecting cylinders 32, so that the installation effect is achieved;

the insulation connecting rods 33 respectively and movably penetrate through the four insulation connecting cylinders 32, and specifically, the insulation connecting rods 33 can slide relatively in the accommodating groove positions;

the spring 35 is fixedly arranged between the insulating connecting rod 33 and the inner wall of the insulating connecting cylinder 32, and the spring 35 is used for connecting the insulating connecting rod 33 so as not to be separated from the accommodating slot;

arc-shaped insulating fixture blocks 34 which are respectively and fixedly arranged at the end parts of the four insulating connecting rods 33 close to the inner layer 4 are clamped and connected between the arc-shaped insulating fixture blocks 34 and the inner layer 4, the arc-shaped insulating fixture blocks 34 are used for well clamping the inner layer 4 between the arc-shaped insulating fixture blocks and the outer layer 1, when the cable is stressed, the stress can be uniformly dispersed through the arrangement of the plurality of groups of extrusion mechanisms 3 and the good elastic force action of the springs 35, so that the working parts can be effectively prevented from being damaged by impact, gaps are formed among the first aluminum core 2, the four inner layers 4, the plurality of groups of extrusion mechanisms 3 and the outer layer 1,

the flame retardant material 5 filled in the gap, the flame retardant material 5 has good flame retardant performance, and it is noted that: the flame retardant material 5 of which kind of material of specific selection should be selected according to actual need, and the flame retardant material 5 that is applicable to the cable simultaneously is the common general knowledge of technical personnel in the field, and therefore no longer give details, the utility model discloses a rated voltage that the cable is suitable for is 300-;

to sum up, the utility model discloses the resistance to compression effect is good, has good insulating properties and barrier propterty simultaneously.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.

Claims (5)

1. The utility model provides an insulating fire-retardant fire resisting cable of polyvinyl chloride sheath of aluminium core polyvinyl chloride which characterized in that includes:

an outer layer (1) having a circular cross-section;

the first aluminum core (2) is arranged at the central axis in the outer layer (1);

the four inner layers (4) are arranged in the outer layer (1) in an annular array, and the four inner layers (4) are all contacted with the inner side of the outer layer (1);

the multiunit extrusion mechanism (3) of setting between first aluminium core (2) and four inlayer (4), and multiunit extrusion mechanism (3) horizontal equidistance sets up, every group extrusion mechanism (3) all include:

an insulating connection ring (31) provided on the circumferential surface of the first aluminum core (2);

four insulating connecting cylinders (32) which are arranged on the circumferential surface of the insulating connecting ring (31) in an annular array, wherein the four insulating connecting cylinders (32) are respectively positioned at the corresponding inner side positions of the four inner layers (4);

insulation connecting rods (33) respectively and movably penetrating through the four insulation connecting cylinders (32);

a spring (35) disposed between the insulating connecting rod (33) and the inner wall of the insulating connecting cylinder (32); arc-shaped insulating clamping blocks (34) which are respectively arranged at the end parts of the four insulating connecting rods (33) close to the inner layer (4), the arc-shaped insulating clamping blocks (34) are connected with the inner layer (4) in a clamping manner, and gaps are formed among the first aluminum core (2), the four inner layers (4), the multiple groups of extrusion mechanisms (3) and the outer layer (1);

and a flame retardant material (5) filled in the gap.

2. The aluminum-core polyvinyl chloride insulated polyvinyl chloride jacketed flame-retardant fire-resistant cable according to claim 1, wherein the outer layer (1) comprises a first shielding layer (11), a polyvinyl chloride insulating layer (12) and a polyvinyl chloride protective outer jacket layer (13) which are arranged from inside to outside in sequence, the polyvinyl chloride insulating layer (12) is coated on the circumferential surface of the first shielding layer (11), and the polyvinyl chloride protective outer jacket layer (13) is coated on the circumferential surface of the polyvinyl chloride insulating layer (12).

3. An aluminum core polyvinyl chloride insulating polyvinyl chloride sheath flame-retardant fire-resistant cable according to claim 2, wherein each of the inner layers (4) is composed of a second aluminum core (41), a second shielding layer (42), a polyethylene insulating layer (43) and a polyethylene protective outer sheath layer (44) which are arranged from inside to outside in sequence, the second shielding layer (42) is coated on the circumferential surface of the second aluminum core (41), the polyethylene insulating layer (43) is coated on the circumferential surface of the second shielding layer (42), the polyethylene protective outer sheath layer (44) is coated on the circumferential surface of the polyethylene insulating layer (43), and the polyethylene protective outer sheath layer (44) is in contact with the first shielding layer (11).

4. An aluminium core polyvinyl chloride insulating polyvinyl chloride sheath flame retardant fire resistant cable according to any one of claims 1 to 3, characterized in that the distance between two adjacent groups of said extrusion mechanisms (3) is 50-60 cm.

5. The flame-retardant and fire-resistant cable with the aluminum core and the polyvinyl chloride insulating sheath as claimed in claim 4, wherein the distance between two adjacent groups of the extrusion mechanisms (3) is 55 cm.

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