CN211858216U

CN211858216U - Rubber insulation shielding drag chain cable

Info

Publication number: CN211858216U
Application number: CN202020669688.3U
Authority: CN
Inventors: 陈怡�; 吴金松
Original assignee: Wenzhou Wangpai Wire And Cable Co ltd
Current assignee: Wenzhou Wangpai Wire And Cable Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-03
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to the technical field of cables, and aims to provide a rubber insulation shielding drag chain cable, which comprises a plurality of cable cores, a nylon base layer and an insulating layer which are arranged from inside to outside, wherein a plurality of support bars are arranged between the nylon base layer and the insulating layer along the circumferential interval, the support bars are elastic pieces and are spirally arranged on the outer wall of the nylon base layer along the length direction, and the two sides of the support bars are respectively fixedly connected with the outer wall of the nylon base layer and the inner wall of the insulating layer; the supporting bar is provided with a plurality of grooves arranged at intervals along the length direction, and the openings of the grooves are communicated with the outer side of the supporting bar; the utility model discloses can improve the anti extrusion effect of cable.

Description

Rubber insulation shielding drag chain cable

Technical Field

The utility model relates to the technical field of cables, in particular to rubber insulation shielding tow chain cable.

Background

The drag chain cable is a special high-flexibility cable which can move back and forth along with the drag chain and is not easy to wear, and is also generally called as a drag cable or a tank chain cable.

In the prior art, a chinese patent document with an authorization publication number of CN207731681U discloses an electric wire, which comprises a conductive part and an insulating part, wherein the conductive part comprises not less than four electric cores from inside to outside, and the insulating part comprises an insulating layer, a fire extinguishing layer and a protective layer; an insulating layer wraps the outside of each electric core, the electric cores and the insulating layers form inner cores, the four inner cores are mutually twisted, and the twisting distance between every two adjacent inner cores is 40 mm; the fire extinguishing layer comprises a base layer, a graphene layer and an expandable graphite layer, and the graphene layer and the expandable graphite layer are uniformly distributed in the base layer; the weight of the graphene layer is 0.1-8% of that of the base layer, and the weight of the expandable graphite layer is 50-250% of that of the base layer; the protective layer is wrapped on the fire extinguishing layer.

The above prior art solutions have the following drawbacks: the inner structure at the sinle silk place lacks the protection device to the sinle silk, and the sinle silk produces deformation easily and leads to inner structure to damage after the electric wire is stressed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a rubber insulation shielding tow chain cable can improve the anti extrusion effect of cable.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a rubber insulation shielding drag chain cable comprises a plurality of wire cores, a nylon base layer and an insulating layer which are arranged from inside to outside, wherein a plurality of supporting strips are arranged between the nylon base layer and the insulating layer at intervals along the circumferential direction, the supporting strips are elastic pieces and are spirally arranged on the outer wall of the nylon base layer along the length direction, and two sides of each supporting strip are fixedly connected with the outer wall of the nylon base layer and the inner wall of the insulating layer respectively; the support bar is provided with a plurality of grooves which are arranged at intervals along the length direction, and the openings of the grooves are communicated with the outer side of the support bar.

By adopting the technical scheme, the supporting strips have elasticity, and after the side walls of the cable are extruded, the supporting strips deform to remove the pressure, so that the direct compression of the wire cores is avoided; the spiral arrangement of the supporting bars enables the whole pressure resistance of the cable to be stronger; the arrangement of the groove facilitates bending of the cable, and flexibility of the drag chain cable is improved.

The utility model discloses further set up to: a spiral containing chamber is formed between every two adjacent supporting strips, the nylon base layer and the insulating layer; the pressure-relieving pad extending along the extension direction of the accommodating chamber is arranged in the accommodating chamber, and the cross section of the pressure-relieving pad is in a surrounding waveform; the wave crest of the pressure-relieving pad is abutted against the insulating layer, and the wave trough is abutted against the nylon base layer.

Through adopting above-mentioned technical scheme, the cable receives to reduce the direct pressure to the sinle silk through the pressure buffering pad after the extrusion, plays the guard action to the sinle silk.

The utility model discloses further set up to: the insulating layer is wrapped by a flame-retardant layer, and the flame-retardant layer comprises antimony trioxide.

By adopting the technical scheme, the flame-retardant layer is used for improving the flame-retardant property of the cable.

The utility model discloses further set up to: a plurality of steel wires are buried in the flame-retardant layer along the length direction, and a plurality of steel wires are arranged along the circumferential direction of the flame-retardant layer.

By adopting the technical scheme, the tensile resistance of the whole cable along the axial direction is improved.

The utility model discloses further set up to: the fire-retardant layer parcel has the smoke reduction layer outward, the smoke reduction layer includes molybdenum trioxide.

Through adopting above-mentioned technical scheme, the smoke reduction layer can reduce the emission of flue gas after the unexpected burning of cable.

The utility model discloses further set up to: the smoke reducing layer is wrapped with a wear-resistant layer, and the wear-resistant layer comprises vulcanized rubber.

Through adopting above-mentioned technical scheme, the wearing layer can improve the wearability of cable, improves life.

The utility model discloses further set up to: the wear-resistant layer is wrapped by a bright layer, and the surface of the bright layer is provided with a fluorescent agent.

Through adopting above-mentioned technical scheme, bright layer is used for playing the suggestion effect under the dark condition.

To sum up, the beneficial effects of the utility model are that:

1. the supporting strips are elastic, and after the side walls of the cable are extruded, the supporting strips deform to remove pressure, so that the cable cores are prevented from being directly pressed; the spiral arrangement of the supporting bars enables the whole pressure resistance of the cable to be stronger; the arrangement of the groove is convenient for bending the cable;

2. the cable reduces the direct pressure to the sinle silk through slowly pressing the pad after receiving the extrusion, plays the guard action to the sinle silk.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic structural view of the nylon base layer and the supporting bar of the present invention.

Reference numerals: 1. a wire core; 2. a nylon base layer; 3. an insulating layer; 4. a flame retardant layer; 41. a steel wire; 5. a smoke abatement layer; 6. a wear layer; 7. a bright layer; 8. a supporting strip; 81. a groove; 9. a pressure-relieving cushion; 10. a containment chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a rubber insulation shielding drag chain cable, as shown in fig. 1 and fig. 2, which comprises a plurality of wire cores 1, a nylon base layer 2, an insulating layer 3, a flame-retardant layer 4, a smoke reduction layer 5, a wear-resistant layer 6 and a bright layer 7 which are arranged from inside to outside. Insulating layer 3 is polyvinyl chloride, and fire-retardant layer 4 includes antimony trioxide, has buried a plurality of steel wires 41 along length direction in the fire-retardant layer 4 underground, and steel wire 41 is provided with a plurality of along fire-retardant layer 4 circumference for improve the whole tensile ability of tearing along the axial of cable. The smoke reduction layer 5 comprises molybdenum trioxide; the wear layer 6 comprises vulcanized rubber; and a fluorescent agent is laid on the surface of the bright layer 7.

As shown in fig. 1 and 2, a plurality of support bars 8 are circumferentially arranged between the nylon base layer 2 and the insulating layer 3 at intervals, the support bars 8 are elastic members and are spirally arranged on the outer wall of the nylon base layer 2 along the length direction, and two sides of each support bar 8 are respectively fixedly connected with the outer wall of the nylon base layer 2 and the inner wall of the insulating layer 3; the supporting strips 8 are elastic, and after the side walls of the cable are extruded, the supporting strips 8 deform to remove pressure, so that the cable cores 1 are prevented from being directly pressed; the spiral arrangement of the support bars 8 enables the overall pressure resistance of the cable to be stronger. Offer a plurality of recesses 81 that set up along length direction interval on the support bar 8, recess 81 opening and the 8 outside intercommunications of support bar for improve the bending capacity of cable.

As shown in fig. 1 and fig. 2, a spiral accommodating chamber 10 is formed between two adjacent support bars 8, the nylon base layer 2 and the insulating layer 3; a pressure-relieving pad 9 extending along the extension direction of the accommodating chamber 10 is fixedly connected in the accommodating chamber 10, and the section of the pressure-relieving pad 9 is in a surrounding wave shape; the wave crest of the pressure buffering pad 9 is abutted against the insulating layer 3, and the wave trough is abutted against the nylon base layer 2, so that the anti-extrusion capacity of the cable is further improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a rubber insulation shielding tow chain cable, includes by interior and a plurality of sinle silk (1) that set up outward, nylon basic unit (2), insulating layer (3), its characterized in that: a plurality of supporting strips (8) are arranged between the nylon base layer (2) and the insulating layer (3) at intervals along the circumferential direction, the supporting strips (8) are elastic pieces and are spirally arranged on the outer wall of the nylon base layer (2) along the length direction, and two sides of each supporting strip (8) are fixedly connected with the outer wall of the nylon base layer (2) and the inner wall of the insulating layer (3) respectively; a plurality of grooves (81) arranged at intervals along the length direction are formed in the supporting bar (8), and openings of the grooves (81) are communicated with the outer side of the supporting bar (8).

2. The rubber insulated shielded towline cable of claim 1, wherein: a spiral containing chamber (10) is formed between each two adjacent supporting strips (8), the nylon base layer (2) and the insulating layer (3); a slow pressure pad (9) extending along the extension direction of the accommodating chamber (10) is arranged in the accommodating chamber (10), and the cross section of the slow pressure pad (9) is in a surrounding wave shape; the wave crest of the pressure-relieving pad (9) is abutted against the insulating layer (3), and the wave trough is abutted against the nylon base layer (2).

3. The rubber insulated shielded towline cable of claim 1, wherein: the insulating layer (3) is wrapped by a flame-retardant layer (4), and the flame-retardant layer (4) comprises antimony trioxide.

4. The rubber insulated shielded towline cable of claim 3, wherein: a plurality of steel wires (41) are buried in the flame-retardant layer (4) along the length direction, and a plurality of steel wires (41) are arranged along the circumferential direction of the flame-retardant layer (4).

5. The rubber insulated shielded towline cable of claim 3, wherein: the flame-retardant layer (4) is wrapped by a smoke reduction layer (5), and the smoke reduction layer (5) comprises molybdenum trioxide.

6. The rubber insulated shielded towline cable of claim 5, wherein: the smoke reducing layer (5) is wrapped by a wear-resistant layer (6), and the wear-resistant layer (6) comprises vulcanized rubber.

7. The rubber insulated shielded towline cable of claim 6, wherein: the wear-resistant layer (6) is wrapped by a bright layer (7), and a fluorescent agent is arranged on the surface of the bright layer (7).