CN209843356U - Flexible bending-resistant cable - Google Patents

Abstract

The utility model discloses a resistant flexible cable that buckles, including cable core, first inoxidizing coating, first filling layer, second inoxidizing coating, second filling layer, inner sheath, metallic shield and overcoat, the cable core includes the wire and the insulating skin and the elasticity core of cladding on it, and the elasticity core is stranded each other with the wire of cladding insulating skin, and the cable core sets gradually first inoxidizing coating, second inoxidizing coating, inner sheath, metallic shield and overcoat outward, has first filling layer and second filling layer in the space of first inoxidizing coating and second inoxidizing coating respectively. Compared with the prior art, the utility model has the advantages of resistant buckling, pliability is high, tensile strength is strong, anti-oxidant, long service life.

Description

Flexible bending-resistant cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to flexible resistant cable of buckling.

Background

With the development of society, the application range of electric power in production and life is wider and wider, and this is then indispensable to use the cable, and the cable includes by electrically conductive conductor and the insulating cover of parcel in the conductor outer lane, and the cable is in the in-service use in-process, and the special environment of its application has very high requirement to the performance and the resistant kink nature of cable.

The traditional power cable is greatly improved in the aspects of water resistance, fire resistance, high temperature resistance, environmental protection and the like, and has a remarkable effect, but the bending resistance of the existing cable is not high, and the resilience performance is poor.

The bending resistance of the cable is an important performance index of the cable. This is because:

in the production process, the processed power cable needs to be wound on a cable drum, so that the power cable can generate a bending radian when laid, and is difficult to straighten, and the forced straightening easily causes the breakage of the power cable.

In addition, traditional power cable bending radius is great, has increased the degree of difficulty of laying, at the in-process of laying, can often carry out actions such as frequent removal, tensile, torsion to power cable, traditional power cable can take place great deformation after long-time tensile and torsion, causes the emergence of phenomenon such as distortion, fracture, and the tensile ratio is relatively poor.

Moreover, because gaps exist between the plurality of wires and between the wires and the insulating layer, in the production and use processes of the power cable, air with oxygen can enter the gaps, and in the long-time use process, the oxygen mixed in the wires can oxidize the wires to a certain extent, so that the transmission performance of the cable is influenced.

SUMMERY OF THE UTILITY MODEL

To the defect that prior art exists, the utility model aims to provide a flexible resistant cable of buckling has advantages such as resistant buckling, pliability height, tensile strength are strong, anti-oxidant, long service life.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a flexible bend-resistant cable, comprising: the cable comprises a cable core, a first protective layer, a first filling layer, a second protective layer, a second filling layer, an inner sheath, a metal shielding layer and an outer sheath;

the cable core comprises a wire, an insulating sheath and an elastic core, wherein the insulating sheath and the elastic core are wrapped on the wire, the wire is made of soft copper materials, the insulating sheath is made of hot-melt polyvinyl chloride and wraps the wire, no gap exists between the wire and the insulating sheath, the elastic core is made of a spinned yarn material, the elastic core and the wire wrapped on the insulating sheath are mutually twisted, no gap exists between the elastic core and the insulating sheath, and the arrangement is such that air is not contained around the wire, the oxidation of the wire is effectively prevented, the service life of the wire is prolonged, and the performance of the wire is not reduced.

The first protective layer is made of light and thin high-insulation fluorosilicone rubber materials, and grooves and bulges which are connected end to end are uniformly distributed on the outer circumference of the first protective layer;

the first filling layer is filled in each groove on the outer circumference of the first protective layer, the first filling layer is made of cable insulation filling glue, and the first filling layer is arranged to facilitate the cable to be regularly round and play a good insulation role.

The second protective layer is made of fluorosilicone rubber materials, the outer circumference of the second protective layer is formed by arc-shaped grooves and arc-shaped bulges which are connected end to end, and the grooves and the arc-shaped bulges on the outer circumference of the second protective layer correspond to the bulges and the grooves on the outer circumference of the first protective layer one by one;

the structure of first inoxidizing coating and second inoxidizing coating so sets up, has better deformation effect, can absorb most pressure, and chooses for use fluorine silicon rubber material, has better storage life.

The second filling layer is filled on the outer circumference of the second protective layer and made of talcum powder, so that the cable is mainly lubricated and also has the functions of isolation and insulation when being folded.

The inner sheath is a cylinder made of polyvinyl chloride material, the second protective layer and the second filling layer which are coated in the inner sheath are arranged in a round shape, and the inner sheath plays an insulating role.

The metal shielding layer is a metal net woven by thin copper wires and coated on the outer circumference of the inner sheath, and the metal shielding layer plays a good role in shielding and prevents external electromagnetic signals from interfering the cable core.

The jacket is a cylinder made of nitrile rubber material, and has the advantages of good ageing resistance, heat resistance, cold resistance, ultraviolet resistance, strong ozone resistance and good insulativity.

The cable core is the same as the axis of the cable core, and a first protective layer, a second protective layer, an inner sheath, a metal shielding layer and an outer sheath are sequentially coated outwards along the cable core.

Furthermore, the number of the conducting wires and the insulating covers coated on the conducting wires is 1-8.

Furthermore, the thickness of the first protective layer is 2 mm-3 mm, the thickness of the bottom end of the groove of the first protective layer from the inner diameter of the first protective layer is 2mm, the thickness of the outer diameter of the first protective layer from the inner diameter of the first protective layer (2) is 3mm, and the first protective layer envelops the cable core into a circle.

Furthermore, the thickness of the second protective layer is 2 mm-3 mm, the thickness of the bottom end of the arc-shaped groove of the second protective layer from the inner diameter of the second protective layer is 2mm, and the thickness of the top end of the arc-shaped protrusion of the second protective layer from the inner diameter of the second protective layer is 3 mm.

Furthermore, the thickness of the inner sheath is 1 mm-2 mm.

Furthermore, the thickness of the outer sleeve is 2 mm-3 mm.

Compared with the prior art, the beneficial effects of the utility model are that: overall structure has higher flexibility, and resistant buckling restrained property is better, and does not contain the air in the cable core for the difficult oxidation of wire, and the wire skin has carried out the multilayer insulation protection, and the life-span of product is higher, and the special construction setting of first inoxidizing coating and second inoxidizing coating still makes the utility model discloses have higher deformation and resilience, can effectively unload and act on most pressure on the cable.

Drawings

Fig. 1 is the utility model relates to a cross-section profile view of flexible resistant cable of buckling.

The meanings of the symbols in fig. 1 are as follows:

1-cable core, 1-wire core, 1-2-insulating layer, 1-3-elastic core, 2-first protective layer, 3-first filling layer, 4-second protective layer, 5-second filling layer, 6-inner sheath, 7-metal shielding layer, 8-overcoat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

The utility model discloses a flexible resistant cable preferred embodiment who buckles constitutes as shown in figure 1, include: the cable comprises a cable core 1, a first protective layer 2, a first filling layer 3, a second protective layer 4, a second filling layer 5, an inner sheath 6, a metal shielding layer 7 and an outer sheath 8;

the cable core 1 comprises a lead 1-1, an insulation sheath 1-2 and an elastic core 1-3, wherein the insulation sheath 1-2 and the elastic core 1-3 are wrapped on the lead 1-1, the lead 1-1 is made of a soft copper material, the insulation sheath 1-2 is made of hot-melt polyvinyl chloride and wrapped on the lead 1-1, no gap exists between the lead 1-1 and the insulation sheath 1-2, the elastic core 1-3 is made of a spun silk material, the elastic core 1-3 and the lead 1-1 wrapped on the insulation sheath 1-2 are mutually twisted, no gap exists between the elastic core 1-3 and the insulation sheath 1-2, and further, the number of the lead 1-1 and the insulation sheath 1-2 wrapped on the lead 1-1 is 1-8, preferably 6.

First inoxidizing coating 2 is frivolous high-insulation fluorine silicon rubber material, evenly distributed end to end's recess and arch on the outer circumference of first inoxidizing coating 2, and is further, the thickness of first inoxidizing coating 2 is 2mm ~ 3mm, and the thickness of the recess bottom of first inoxidizing coating 2 apart from 2 internal diameters of first inoxidizing coating is 2mm, and the thickness of the external diameter of first inoxidizing coating 2 apart from 2 internal diameters of first inoxidizing coating is 3mm, and first inoxidizing coating 2 envelops cable core 1 into circularly.

The first filling layer 3 is filled in each groove on the outer circumference of the first protective layer 2, and the first filling layer 3 is made of cable insulation filling glue;

second inoxidizing coating 4 is fluorine silicon rubber material, and arc recess and arc arch by end to end on the outer circumference of second inoxidizing coating 4 constitute, recess and arc arch on the outer circumference of second inoxidizing coating 4 and the outer circumference of first inoxidizing coating 2 arch and recess one-to-one, and is further, the thickness of second inoxidizing coating 4 is 2mm ~ 3mm, and the thickness of the arc recess bottom of second inoxidizing coating 4 apart from 4 internal diameters of second inoxidizing coating is 2mm, and the thickness of the protruding top of arc of second inoxidizing coating 4 apart from 4 internal diameters of second inoxidizing coating is 3 mm.

The second filling layer 5 is filled on the outer circumference of the second protective layer 4 and is made of talcum powder;

the inner sheath 6 is a cylinder made of polyvinyl chloride material, and the second protective layer 4 and the second filling layer 5 which are coated in the cylinder are arranged into a circle, further, the thickness of the inner sheath 6 is 1 mm-2 mm, and the thickness of the inner sheath is preferably 2 mm.

The metal shielding layer 7 is a metal mesh woven by thin copper wires and is coated on the outer circumference of the inner sheath 6, so that the cable core 1 is electromagnetically shielded, and external electromagnetic signal interference is prevented.

The jacket 8 is a cylinder made of nitrile rubber material, and further, the thickness of the jacket 8 is 2 mm-3 mm. This embodiment is preferably 2 mm.

The core is the same as the axis of the cable core 1, and a first protective layer 2, a second protective layer 4, an inner sheath 6, a metal shielding layer 7 and an outer sheath 8 are sequentially coated along the cable core 1 outwards.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (6)

1. A flexible bend-resistant cable, comprising: the cable comprises a cable core (1), a first protective layer (2), a first filling layer (3), a second protective layer (4), a second filling layer (5), an inner sheath (6), a metal shielding layer (7) and an outer sheath (8);

the cable core (1) comprises a wire (1-1) and an insulating sheath (1-2) and an elastic core (1-3) which are coated on the wire (1-1), the wire (1-1) is made of a soft copper material, the insulating sheath (1-2) is made of hot-melt polyvinyl chloride and is coated on the wire (1-1), no gap exists between the wire (1-1) and the insulating sheath (1-2), the elastic core (1-3) is made of a spinnerette material, the elastic core (1-3) and the wire (1-1) coated with the insulating sheath (1-2) are mutually twisted, and no gap exists between the elastic core (1-3) and the insulating sheath (1-2);

the first protective layer (2) is made of a light and thin high-insulation fluorosilicone rubber material, and grooves and protrusions which are connected end to end are uniformly distributed on the outer circumference of the first protective layer (2);

the first filling layer (3) is filled in each groove on the outer circumference of the first protective layer (2), and the first filling layer (3) is made of cable insulation filling glue;

the second protective layer (4) is made of fluorosilicone rubber materials, the outer circumference of the second protective layer (4) is formed by arc-shaped grooves and arc-shaped bulges which are connected end to end, and the grooves and the arc-shaped bulges on the outer circumference of the second protective layer (4) correspond to the bulges and the grooves on the outer circumference of the first protective layer (2) one by one;

the second filling layer (5) is filled on the outer circumference of the second protective layer (4) and is made of talcum powder;

the inner sheath (6) is a cylinder made of polyvinyl chloride material, and the second protective layer (4) and the second filling layer (5) which are coated in the inner sheath are arranged into a circle;

the metal shielding layer (7) is a metal mesh woven by thin copper wires and is coated on the outer circumference of the inner sheath (6);

the jacket (8) is a cylinder made of nitrile rubber material;

the cable core (1) is coated with a first protective layer (2), a second protective layer (4), an inner sheath (6), a metal shielding layer (7) and an outer sheath (8) along the cable core (1) in sequence.

2. A flexible bend-resistant cable as recited in claim 1, wherein: the number of the conducting wires (1-1) and the insulating covers (1-2) coated on the conducting wires is 1-8.

3. A flexible bend-resistant cable as recited in claim 1, wherein:

the thickness of first inoxidizing coating (2) is 2mm ~ 3mm, and the recess bottom of first inoxidizing coating (2) is 2mm apart from the thickness of first inoxidizing coating (2) internal diameter, and the thickness of the external diameter of first inoxidizing coating (2) apart from first inoxidizing coating (2) internal diameter is 3mm, and first inoxidizing coating (2) envelopment becomes circularly with cable core (1).

4. A flexible bend-resistant cable as recited in claim 1, wherein:

the thickness of second inoxidizing coating (4) is 2mm ~ 3mm, and the thickness of the arc recess bottom of second inoxidizing coating (4) apart from second inoxidizing coating (4) internal diameter is 2mm, and the thickness of the protruding top of arc of second inoxidizing coating (4) apart from second inoxidizing coating (4) internal diameter is 3 mm.

5. A flexible bend-resistant cable as recited in claim 1, wherein: the thickness of the inner sheath (6) is 1 mm-2 mm.

6. A flexible bend-resistant cable as recited in claim 1, wherein: the thickness of the outer sleeve (8) is 2 mm-3 mm.