CN216980167U

CN216980167U - Bending-resistant fireproof flame-retardant cable

Info

Publication number: CN216980167U
Application number: CN202122723081.6U
Authority: CN
Inventors: 乔万利
Original assignee: Shanghai Yeshen Technology Co ltd
Current assignee: Shanghai Yeshen Technology Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-07-15
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a bending-resistant fireproof flame-retardant cable which comprises three copper conductors, wherein the three copper conductors are distributed in an annular array, an inner shielding layer is arranged on the outer surface of each copper conductor, an insulating layer is arranged on the outer surface of each inner shielding layer, the outer surfaces of the three insulating layers are jointly provided with bending-resistant layers, and an inner flame-retardant sheath is arranged on the outer surface of each bending-resistant layer. According to the bending-resistant fireproof flame-retardant cable, the bending resistance of the cable is improved through the bending-resistant layer, so that the cable is suitable for various laying or transporting scenes, the automatic recovery function of the cable is realized through the elastic band, the probability of deformation of a copper conductor is reduced, the fireproof flame-retardant structure is formed by the outer flame-retardant sheath, the inner flame-retardant sheath and the low-smoke halogen-free flame-retardant band, the fireproof performance of the cable is ensured, and the mutual interference of the copper conductors and the interference of an external environment are reduced through the inner shielding layer and the outer shielding layer.

Description

Bending-resistant fireproof flame-retardant cable

Technical Field

The utility model relates to the technical field of flame-retardant cables, in particular to a bending-resistant fireproof flame-retardant cable.

Background

The fireproof flame-retardant cable is a cable which is characterized in that a test sample is burnt under a specified test condition, after a test fire source is removed, the spread of flame is only limited, and the residual flame or burn can be automatically extinguished within a limited time. The essential characteristics are: in the case of a fire, may burn out and fail to operate, but may prevent the spread of the fire. In common, in case of fire, the electric wire can limit the combustion within a local range, does not spread, keeps other various equipment and avoids causing larger loss.

The existing fireproof flame-retardant cable needs to be bent and curled more or less when being laid, but the existing fireproof flame-retardant cable is poor in bending resistance, particularly, the phenomena of outer sheath breakage, copper conductor deformation and the like occur easily, the existing fireproof flame-retardant cable mostly does not have automatic recovery capability, the cable cannot recover to the original state after being bent for a long time, the subsequent use of the cable is influenced, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a bending-resistant fireproof flame-retardant cable which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a fire prevention flame retarded cable of nai buckling, includes the copper conductor, the copper conductor is provided with threely, and is three the copper conductor is ring array and distributes, copper conductor surface mounting has the internal shield layer, internal shield layer surface mounting has the insulating layer, and is three the insulating layer surface is provided with resistant layer of buckling jointly, resistant layer surface mounting who buckles has the internal flame retardant sheath, the external surface mounting of internal flame retardant sheath has the external shield layer, external shield layer surface mounting has outer flame retardant sheath, outer flame retardant sheath surface is the dull polish structure.

Preferably, the outer surface of the insulating layer is wound with a low-smoke halogen-free flame-retardant belt.

Preferably, resistant layer of buckling includes elastic sheath, elastic sheath is provided with a plurality of, a plurality of elastic sheath is linear array distribution, and adjacent elastic sheath each other in close contact with from top to bottom, the through-hole that link up about elastic sheath upper end is opened has three, elastic sheath is class triangle-shaped structure, a plurality of the elastic sheath surface is provided with three elastic webbing jointly, and is three the elastic webbing is annular array distribution.

Preferably, the outer surface of the part of the elastic sheath is in close contact with the inner wall of the inner flame-retardant sheath, three mounting grooves are formed in the outer surface of the elastic sheath, and clamping grooves are formed in the side walls of the mounting grooves, close to one end of the elastic sheath.

Preferably, the elastic band is located the mounting groove, the one end cambered surface that the elastic band is close to elastic sheath is installed and is blocked the strip, block strip and draw-in groove activity joint.

Preferably, the outer surface of the elastic band is in close contact with the inner wall of the inner flame-retardant sheath.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the bending-resistant fireproof flame-retardant cable, the bending resistance of the cable is improved by arranging the bending-resistant layer, so that the cable is suitable for various laying or transporting scenes, firstly, the three copper conductors are jointly fixed by arranging the plurality of elastic sheaths, when the copper conductors need to be bent, because the two adjacent elastic sheaths do not have a rigid connection relation, the adjacent elastic sheaths can be moderately bent during bending, and the elastic sheaths can avoid the displacement of the three copper conductors, meanwhile, the elastic belt is stretched to generate elasticity due to bending, and when the cable is free of external force factors, the elastic belt performs work restoration through elasticity to drive the whole cable to be restored, so that the probability of deformation of the copper conductors is reduced, and the subsequent use of the cable is facilitated;

2. according to the bending-resistant fireproof flame-retardant cable, the outer flame-retardant sheath, the inner flame-retardant sheath and the low-smoke halogen-free flame-retardant belt are arranged to form a fireproof flame-retardant structure, so that the fireproof performance of the cable is ensured, and the interference between copper conductors and the interference of an external environment are reduced by arranging the inner shielding layer and the outer shielding layer, so that the use quality of the cable is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of a bending-resistant fireproof flame-retardant cable according to the present invention;

FIG. 2 is a schematic view of the overall structure of the insulation layer of a bending-resistant fireproof flame-retardant cable according to the present invention;

FIG. 3 is a schematic view of the overall structure of a bending-resistant assembly of a bending-resistant fireproof flame-retardant cable according to the present invention;

FIG. 4 is a schematic view of the overall structure of a sheath of a bending-resistant fireproof flame-retardant cable according to the present invention;

fig. 5 is a schematic view of the overall structure of the elastic band of the bending-resistant fireproof flame-retardant cable according to the utility model.

In the figure: 1. a copper conductor; 2. an inner shield layer; 3. an insulating layer; 4. a flex-resistant layer; 5. an inner flame-retardant sheath; 6. an outer shield layer; 7. an outer flame retardant jacket; 21. a low smoke, halogen-free, flame retardant tape; 31. an elastic sheath; 32. an elastic band; 33. a through hole; 41. mounting grooves; 42. a card slot; 51. and (6) clamping the strip.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained by combining the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element 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," "second," and the like 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," "disposed," "connected," and the like are to be construed broadly, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a bending-resistant fireproof flame-retardant cable comprises copper conductors 1, the number of the copper conductors 1 is three, the three copper conductors 1 are distributed in an annular array, an inner shielding layer 2 is mounted on the outer surface of each copper conductor 1, an insulating layer 3 is mounted on the outer surface of each inner shielding layer 2, a bending-resistant layer 4 is jointly arranged on the outer surface of each three insulating layer 3, an inner flame-retardant sheath 5 is mounted on the outer surface of each bending-resistant layer 4, an outer shielding layer 6 is mounted on the outer surface of each inner flame-retardant sheath 5, an outer flame-retardant sheath 7 is mounted on the outer surface of each outer shielding layer 6, and the outer surface of each outer flame-retardant sheath 7 is of a frosted structure.

The outer surface of the insulating layer 3 is wound with a low-smoke halogen-free flame-retardant belt 21, the insulating layer 3 is an insulating ethylene propylene rubber, and the low-smoke halogen-free flame-retardant belt 21 contains polyolefin.

Resistant layer 4 of buckling includes elastic sheath 31, elastic sheath 31 is provided with a plurality of, a plurality of elastic sheath 31 is linear array and distributes, and the mutual in close contact with of adjacent elastic sheath 31 from top to bottom, open elastic sheath 31 upper end has the three through-hole 33 that link up from top to bottom, elastic sheath 31 is a class triangle-shaped structure, a plurality of elastic sheath 31 surface is provided with three elastic webbing 32 jointly, three elastic webbing 32 is annular array and distributes, elastic sheath 31 possesses certain elasticity.

The outer surface of part of the elastic sheath 31 is closely contacted with the inner wall of the inner flame-retardant sheath 5, three mounting grooves 41 are formed on the outer surface of the elastic sheath 31, and a clamping groove 42 is formed on the side wall of one end, close to the elastic sheath 31, of each mounting groove 41.

The elastic band 32 is located in the mounting groove 41, a clamping strip 51 is mounted on the arc surface of one end, close to the elastic sheath 31, of the elastic band 32, and the clamping strip 51 is movably clamped with the clamping groove 42.

The outer surface of the elastic belt 32 is in close contact with the inner wall of the inner flame-retardant jacket 5, and both the inner flame-retardant jacket 5 and the outer flame-retardant jacket 7 are made of mixed butyronitrile polyvinyl chloride.

It should be noted that, the utility model is a bending-resistant fireproof flame-retardant cable, the bending-resistant capability of the cable is improved by arranging the bending-resistant layer 4, so that the cable is suitable for various laying or transportation scenes, firstly, three copper conductors 1 are jointly fixed by arranging a plurality of elastic sheaths 31, when the copper conductors 1 need to be bent, because no rigid connection relation exists between two adjacent elastic sheaths 31, the adjacent elastic sheaths 31 can be bent properly during bending, and the elastic sheaths 31 can avoid the displacement of the three copper conductors 1, meanwhile, the elastic belt 32 is stretched to generate elasticity due to bending, when the cable is free from the influence of external force factors, the elastic belt 32 is successfully restored by elasticity to drive the whole cable to be restored, thereby reducing the probability of deformation of the copper conductors 1 and being beneficial to the subsequent use of the cable, the fireproof flame-retardant structure is jointly formed by arranging the outer flame-retardant sheath 7, the inner flame-retardant sheath 5 and the low-smoke halogen-free flame-retardant belt 21, guarantee the fire behavior of cable, reduce the mutual interference of copper conductor 1 and external environment's interference through setting up internal shield layer 2 and external shield 6, ensure the service quality of cable.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a fire prevention flame retarded cable of nai buckling, includes copper conductor (1), its characterized in that: copper conductor (1) is provided with threely, and is three copper conductor (1) is the annular array and distributes, copper conductor (1) surface mounting has internal shield layer (2), internal shield layer (2) surface mounting has insulating layer (3), and is three insulating layer (3) surface is provided with resistant bending layer (4) jointly, resistant bending layer (4) surface mounting has interior fire-retardant sheath (5), interior fire-retardant sheath (5) surface mounting has outer shielding layer (6), outer shielding layer (6) surface mounting has outer fire-retardant sheath (7), outer fire-retardant sheath (7) surface is the dull polish structure.

2. The bending-resistant fireproof flame-retardant cable according to claim 1, wherein: and a low-smoke halogen-free flame-retardant belt (21) is wound on the outer surface of the insulating layer (3).

3. The bending-resistant fireproof flame-retardant cable according to claim 2, wherein: resistant inflection layer (4) are including elastic sheath (31), elastic sheath (31) are provided with a plurality of, a plurality of elastic sheath (31) are linear array and distribute, and adjacent elastic sheath (31) each other in close contact with from top to bottom, open elastic sheath (31) upper end has through-hole (33) that link up from top to bottom three, elastic sheath (31) are class triangle-shaped structure, a plurality of elastic sheath (31) surface is provided with three elastic webbing (32), three jointly elastic webbing (32) are ring array and distribute.

4. The bending-resistant fireproof flame-retardant cable according to claim 3, wherein: the outer surface of part of the elastic sheath (31) is in close contact with the inner wall of the inner flame-retardant sheath (5), three mounting grooves (41) are formed in the outer surface of the elastic sheath (31), and clamping grooves (42) are formed in the side wall of one end, close to the elastic sheath (31), of each mounting groove (41).

5. The bending-resistant fireproof flame-retardant cable according to claim 4, wherein: elastic band (32) are located mounting groove (41), elastic band (32) are close to the one end cambered surface of elastic sheath (31) and install card strip (51), card strip (51) and draw-in groove (42) activity joint.

6. The bending-resistant fireproof flame-retardant cable according to claim 3, wherein: the outer surface of the elastic belt (32) is in close contact with the inner wall of the inner flame-retardant jacket (5).