CN212874084U - Coaxial flame-retardant wear-resistant anti-theft cable - Google Patents

Abstract

The utility model discloses a coaxial flame-retardant wear-resisting anti-theft cable, which comprises two insulating wire cores, a tensile wire core, a wrapping layer, an outer conductor layer, a binding layer, an anti-interference shielding layer, a flame-retardant wrapping layer and an anti-theft outer protective layer from inside to outside in sequence, wherein each insulating wire core comprises a central conductor, an insulating layer and a shielding layer from inside to outside in sequence; the outer conductor layer is composed of a flame-retardant signal cable and a filling core, and the signal cable is composed of a signal conductor and a signal conductor insulating layer. The utility model increases the hardness of the cable outer sheath by embedding the anti-theft wire core in the outer sheath layer, thereby avoiding the occurrence of theft events; the cable has the advantages of keeping the original insulating property, having better characteristics of flame retardance, water resistance, wear resistance and the like, prolonging the service life of the cable, reducing the cost and being easy to popularize.

Description

Coaxial flame-retardant wear-resistant anti-theft cable

The technical field is as follows:

the utility model relates to a coaxial-type cable, in particular to fire-retardant wear-resisting theftproof cable of coaxial-type.

Background art:

copper is known to have unique physical and electrical properties and is a traditional conductor material. But because of the shortage of copper resources and high market price in the world, the electrician industry is promoted to actively seek for alternative materials. Generally, aluminum is considered to be a good conductor due to its abundant resource, low cost, light weight and high conductivity. However, aluminum has the fatal weaknesses of low strength, easy creep, poor corrosion resistance and easy formation of a firm oxide film on the surface, so that the joint part generates large contact resistance and the joint is difficult to be firmly connected. Thereby limiting the further promotion of replacing copper with aluminum. With the development of the bimetal layered composite material technology, people continuously and uniformly coat a copper layer on an aluminum core wire, and enable copper and aluminum atoms on a contact interface of the aluminum core wire and the aluminum core wire to form metallurgical bonding, so that a copper-coated aluminum wire is developed, the wire not only has the characteristics of excellent conductivity of copper and light weight of aluminum, but also overcomes the defects that the aluminum is easy to oxidize, the contact resistance is large, and a joint is difficult to weld, and is a novel conductor material. Under the influence of the factors of obvious cost advantage of the aluminum conductor, relative shortage of copper resources in China and the like, research and development strength of related technologies is also enhanced in enterprises in the industry.

However, due to the low strength and hardness of the copper clad aluminum, thieves often use long iron scissors or ordinary hardware to cut or break the cable, resulting in power interruption.

The utility model has the following contents:

the utility model discloses the technical problem that will solve is: the coaxial flame-retardant wear-resistant anti-theft cable overcomes the defects of the prior art, ensures the characteristics of wear resistance, flame retardance, water resistance and the like of the cable, increases the hardness of the outer sheath of the cable, and avoids theft.

The utility model discloses a technical scheme who solves technical problem and take is:

the coaxial flame-retardant wear-resistant anti-theft cable comprises two insulating wire cores, a tensile wire core, a wrapping layer, an outer conductor layer, a tightening layer, an anti-interference shielding layer, a flame-retardant wrapping layer and an anti-theft outer protection layer from inside to outside, wherein each insulating wire core comprises a central conductor, an insulating layer and a shielding layer from inside to outside; the outer conductor layer is composed of a flame-retardant signal cable and a filling core, and the signal cable is composed of a signal conductor and a signal conductor insulating layer.

The anti-theft outer sheath layer is composed of an outer sheath layer and an anti-theft wire core, the outer sheath layer is formed by processing high-flame-retardant, acid-base-resistant polyvinyl chloride rubber and plastic elastomer plastics, the anti-theft wire core is formed by processing galvanized steel strands, the anti-theft wire core is fourteen, and the anti-theft wire core is uniformly embedded in the outer sheath layer.

The inboard of two insulation core be tangent form and distribute two insulation core's upside and downside distribute and be provided with a tensile sinle silk, and every tensile sinle silk outer wall is tangent form with two insulation core's outer wall respectively and distributes, tensile sinle silk adopts for military use bulletproof silk and natural hemp rope transposition to form.

The wrapping layer is formed by overlapping and wrapping polyester tapes, and the tensile wire cores are distributed in a tangent manner with the inner wall of the wrapping layer; the cable is characterized in that at least six flame-retardant filling cores and two signal cables are uniformly wound around the outside of the wrapping layer, the flame-retardant filling cores are made of flame-retardant high-density polyethylene high-molecular materials, the signal conductors are made of copper-clad 8000 aluminum alloy wires, and the signal conductor insulating layers are made of thermoplastic polyester elastomer TPEE materials.

The outside winding of outer conductor layer has the tight layer of tightening, it adopts one deck non-woven fabrics to wind the package and forms to tighten the layer.

The central conductor is processed by adopting a copper-clad 8000 aluminum alloy material, the insulating layer is processed by adopting a thermoplastic polyester elastomer TPEE material, and the shielding layer is formed by adopting an aluminum-plastic composite tape in a wrapping manner.

The anti-interference shielding layer is formed by longitudinally wrapping an aluminum-plastic composite belt.

The flame-retardant wrapping layer is formed by wrapping a layer of high-flame-retardant glass cloth tape.

The utility model discloses an actively beneficial effect is:

the utility model increases the hardness of the cable outer sheath, and avoids the occurrence of theft; keep original insulating properties, have characteristics such as better fire-retardant, waterproof, wear-resisting, improved the life of cable, with the difference of ordinary removal cable, its key technology embodies following several:

first, center conductor, signal conductor: the copper-clad 8000 aluminum alloy conductor is adopted, and is stranded through the working procedures of wire drawing, annealing, stranding and the like, has certain flexibility, and is convenient to lay.

Insulating layer, signal conductor insulating layer: are produced by processing a thermoplastic polyester elastomer TPEE containing a rigid semicrystalline copolyester, the copolyester obtained by copolymerization, for example, a dibutyl polyterephthalate of soft chain sequence. Thermoplastic polyester elastomers are ideal materials for parts requiring resistance to bending fatigue and large temperature differentials, and are resistant to tearing and notch growth due to bending, creep and abrasion; the thermoplastic polyester elastomer is resistant to hydrocarbons and many other chemical liquids, and maintains extremely high resilience, strength and rigidity; the thermoplastic polyester elastomer also has high mechanical strength, good ozone resistance, grease resistance and petroleum compound resistance, good dynamic fatigue resistance and small gas permeability.

③: a shielding layer: a heat-insulating and moisture-proof aluminum-plastic composite belt is adopted, and an aluminum layer of the composite belt faces outwards and wraps a cable core to form an anti-interference shielding layer.

Fourthly, tensile wire core: the bulletproof wire is formed by twisting a bulletproof wire and a natural hemp rope, so that the flexibility of the cable is improved, and the transverse tension of the cable is improved.

Insulating wrapping layer: the non-woven fabric is formed by lapping and winding a layer of polyester tape, and compared with non-woven fabric, the non-woven fabric has the characteristics of light weight, high tensile strength, high temperature resistance and certain insulating property.

Sixthly, the flame-retardant filling core: the flame-retardant filling core is processed by adopting a flame-retardant high-density polyethylene high polymer material, and the requirements of the extruded flame-retardant filling core are consistent.

And seventh, binding the layer: adopt one deck non-woven fabrics to wind the package and form, tie up insulating sinle silk and outer conductor layer together, frivolous and can play the insulating effect of protection.

Eighthly, a water-resistant shielding layer: is formed by longitudinally wrapping a layer of aluminum-plastic composite belt, can well shield electromagnetic signals and prevent the interference of external electromagnetic fields

Ninthly, flame-retardant wrapping layer: the cable is formed by wrapping a layer of high-flame-retardant glass cloth tape, so that the interior of the cable can be tightened, and the insulating layer and the outer protective layer can be isolated; when the cable suffers from burning, a large amount of heat can be absorbed, a carbonization layer is formed, an air isolation layer and an insulation layer are protected from burning, and the loss of fire is prevented from further expanding.

R, outer sheath layer: the flame-retardant and acid and alkali resistant polyvinyl chloride rubber-plastic elastomer plastic is processed. The polyvinyl chloride rubber-plastic elastomer plastic is prepared by mixing polyvinyl chloride resin powder serving as a base material with a certain proportion of ethylene propylene diene monomer, a filler, a modifier, a flame retardant, an acid and alkali resistant plasticizer and the like. The polyvinyl chloride elastomer plastic has the characteristics of rubber due to the addition of the modified material while keeping the performance of the original polyvinyl chloride plastic; the insulating material keeps the original insulating property, and has the characteristics of wear resistance, water resistance, tensile resistance, oil stain resistance and the like.

⑪, anti-theft wire core: the steel wire is processed by galvanized steel strands, and has lasting corrosion resistance and excellent toughness and elasticity.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

the invention will be further explained and explained with reference to the drawings, in which:

referring to fig. 1, the coaxial flame-retardant wear-resistant anti-theft cable sequentially comprises two insulating wire cores, a tensile wire core 4, a wrapping layer 5, an outer conductor layer, a tightening layer 9, an anti-interference shielding layer 10, a flame-retardant wrapping layer 11 and an anti-theft outer protection layer from inside to outside, wherein each insulating wire core sequentially comprises a central conductor 1, an insulating layer 2 and a shield 3 from inside to outside; the outer conductor layer is composed of a flame-retardant signal cable and a filling core 6, and the signal cable is composed of a signal conductor 7 and a signal conductor insulating layer 8.

The anti-theft outer sheath layer is composed of an outer sheath layer 12 and an anti-theft wire core 13, the outer sheath layer 12 is formed by processing high-flame-retardant, acid-base-resistant polyvinyl chloride rubber and plastic elastomer plastics, the anti-theft wire core 13 is formed by processing galvanized steel strands, the anti-theft wire cores 13 are fourteen, and the anti-theft wire cores are uniformly embedded in the outer sheath layer 12.

The inboard of two insulation core is tangent form and distributes, and upside and the downside at two insulation core distribute and be provided with a tensile sinle silk 4, and every tensile sinle silk 4's outer wall is tangent form with two insulation core's outer wall respectively and distributes, and tensile sinle silk 4 adopts for military use bulletproof silk and natural hemp rope transposition to form.

The wrapping layer 5 is formed by overlapping and wrapping polyester tapes, and the tensile wire core 4 is tangentially distributed with the inner wall of the wrapping layer 5; the outside of the wrapping layer 5 is uniformly surrounded with at least six flame-retardant filling cores 6 and two signal cables, the flame-retardant filling cores 6 are made of flame-retardant high-density polyethylene high-molecular materials, the signal conductor 7 is made of copper-clad 8000 aluminum alloy materials, and the signal conductor insulating layer 8 is made of thermoplastic polyester elastomer TPEE materials.

The outside winding of outer conductor layer has the tight layer 9 of tying, and tight layer 9 adopts one deck non-woven fabrics to wind the package and forms.

The central conductor 1 is processed by adopting a copper-clad 8000 aluminum alloy material, the insulating layer 2 is processed by adopting a thermoplastic polyester elastomer TPEE material, and the shielding layer 3 is formed by adopting an aluminum-plastic composite tape in a wrapping manner.

The anti-interference shielding layer 10 is formed by longitudinally wrapping an aluminum-plastic composite tape.

The flame-retardant wrapping layer 11 is formed by wrapping a layer of high-flame-retardant glass cloth tape.

The utility model increases the hardness of the cable outer sheath by embedding the anti-theft wire core in the outer sheath layer, thereby avoiding the occurrence of theft events; the cable has the advantages of keeping the original insulating property, having better characteristics of flame retardance, water resistance, wear resistance and the like, prolonging the service life of the cable, reducing the cost and being easy to popularize.

Claims (8)

1. The utility model provides a fire-retardant wear-resisting theftproof cable of coaxial-type which characterized in that: the coaxial flame-retardant wear-resistant anti-theft cable comprises two insulating wire cores, a tensile wire core (4), a wrapping layer (5), an outer conductor layer, a tightening layer (9), an anti-interference shielding layer (10), a flame-retardant wrapping layer (11) and an anti-theft outer protection layer from inside to outside in sequence, wherein each insulating wire core comprises a central conductor (1), an insulating layer (2) and a shielding layer (3) from inside to outside in sequence; the outer conductor layer consists of a flame-retardant signal cable and a flame-retardant filling core (6), and the signal cable consists of a signal conductor (7) and a signal conductor insulating layer (8).

2. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the theftproof outer jacket comprises oversheath layer (12) and theftproof sinle silk (13), oversheath layer (12) adopt high fire-retardant, acid and alkali-resistance polyvinyl chloride rubber and plastic elastomer plastics processing to form, theftproof sinle silk (13) adopt galvanized steel strand wires to process and form, theftproof sinle silk (13) are fourteen, even inlay in oversheath layer (12).

3. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the inboard of two insulation core be tangent form and distribute two insulation core's upside and downside be provided with one tensile sinle silk (4) respectively, and the outer wall of every tensile sinle silk (4) is tangent form with two insulation core's outer wall respectively and distributes, tensile sinle silk (4) adopt for military use to prevent that the silk adds natural rope made of hemp transposition and forms.

4. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the wrapping layer (5) is formed by overlapping and wrapping polyester tapes, and the tensile wire core (4) and the inner wall of the wrapping layer (5) are distributed in a tangent manner; the cable is characterized in that at least six flame-retardant filling cores (6) and two signal cables are uniformly wound around the outside of the wrapping layer (5), the flame-retardant filling cores (6) are made of flame-retardant high-density polyethylene high polymer materials, the signal conductors (7) are made of copper-clad 8000 aluminum alloy materials, and the signal conductor insulating layers (8) are made of thermoplastic polyester elastomer TPEE materials.

5. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the outside winding of outer conductor layer has and ties up layer (9), it adopts one deck non-woven fabrics to wind the package and forms to tie up layer (9).

6. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the central conductor (1) is processed by adopting a copper-clad 8000 aluminum alloy material, the insulating layer (2) is processed by adopting a thermoplastic polyester elastomer TPEE material, and the shielding layer (3) is formed by adopting an aluminum-plastic composite tape in a wrapping manner.

7. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the anti-interference shielding layer (10) is formed by longitudinally wrapping an aluminum-plastic composite tape.

8. The coaxial flame-retardant wear-resistant anti-theft cable according to claim 1, characterized in that: the flame-retardant wrapping layer (11) is formed by wrapping a layer of high-flame-retardant glass cloth tape.

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