CN111599522B

CN111599522B - Anti-distortion cable

Info

Publication number: CN111599522B
Application number: CN202010483191.7A
Authority: CN
Inventors: 崔亮
Original assignee: Guangdong Guangxian Cable Industry Co ltd
Current assignee: Guangdong Guangxian cable industry Co.,Ltd.
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-07-02
Anticipated expiration: 2040-06-01
Also published as: CN111599522A

Abstract

The invention provides an anti-distortion cable which comprises a cable core, an inner sheath, a wrapping layer, a shielding layer and an outer sheath, wherein the inner sheath, the wrapping layer, the shielding layer and the outer sheath are sequentially wrapped outside the cable core; the cable core comprises a central framework and a plurality of wires, the central framework is provided with a circle center section, a plurality of first torsion resistant strips protruding outwards are arranged on the outer circumference of the central framework, the first torsion resistant strips extend along the axial direction of the central framework and are provided with circular sections, and one wire is arranged between any two adjacent first torsion resistant strips; the inner side of the inner sheath is provided with second torsion resistant strips protruding towards the first torsion resistant strips and abutting against the first torsion resistant strips at positions corresponding to the first torsion resistant strips, and a plurality of torsion resistant balls arranged at intervals along the length direction of the second torsion resistant strips and abutting against the conducting wire are further arranged on two sides of the second torsion resistant strips in the length direction. According to the invention, the first torsion resistant strip, the second torsion resistant strip and the torsion resistant ball are arranged to limit and fix the lead, and when the lead is subjected to torsion force, the first torsion resistant strip, the second torsion resistant strip, the torsion resistant ball and the lead are limited mutually, so that the torsion deformation of the lead is avoided.

Description

Anti-distortion cable

Technical Field

The invention relates to the technical field of cables, in particular to an anti-distortion cable.

Background

Cables are generally rope-like cables made by stranding several or groups of conductors, at least two in each group, each group being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering. The device is erected in the air or installed underground or underwater for telecommunication or power transmission.

Under the condition of torsional force, the metal conductor in the cable core is easy to be twisted and deformed, so that the resistance of the conductor is changed, the conduction condition is influenced, and even the conductor is broken.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides an anti-twisting cable.

The invention provides an anti-distortion cable which comprises a cable core, an inner sheath, a wrapping layer, a shielding layer and an outer sheath, wherein the inner sheath, the wrapping layer, the shielding layer and the outer sheath are sequentially wrapped outside the cable core; wherein:

the cable core comprises a central framework and a plurality of wires, the central framework is provided with a circle center section, a plurality of first torsion resistant strips protruding outwards are arranged on the outer circumference of the central framework, the first torsion resistant strips extend along the axial direction of the central framework and are provided with circular sections, one wire is arranged between any two adjacent first torsion resistant strips, any one wire is abutted against the two adjacent first torsion resistant strips, and the inner side and the outer side of each wire are abutted against the central framework and the inner sheath respectively;

the inner side of the inner sheath is provided with second torsion resistant strips protruding towards the first torsion resistant strips and abutted against the first torsion resistant strips at positions corresponding to the first torsion resistant strips, the second torsion resistant strips axially extend along the central framework and are provided with circular cross sections, and a plurality of torsion resistant balls which are arranged at intervals along the length direction of the second torsion resistant strips and abutted against the conducting wire are further arranged on two sides of the length direction of the second torsion resistant strips.

Preferably, the second torsion bar and the torsion balls are made of elastic materials.

Preferably, a plurality of annular grooves are formed in the outer portion of the outer sheath at intervals along the axial direction of the cable, and an anti-torsion sleeve capable of rotating relative to the outer sheath is sleeved in each annular groove.

Preferably, a plurality of sliding grooves are distributed at the bottom of the annular groove, and sliding blocks which are clamped in the sliding grooves and can slide in the sliding grooves are arranged at the positions, corresponding to the sliding grooves, of the inner side of the torsion-resistant sleeve.

Preferably, the two ends of the torsion-resistant sleeve are connected with the outer sheath through screws.

Preferably, the cross-sectional area of the first torsion bar is greater than the cross-sectional area of the second torsion bar, and the cross-sectional area of the second torsion bar is greater than the cross-sectional area of the torsion ball.

Preferably, the first torsion bar is provided with a through hole extending along the length direction thereof.

According to the anti-twisting cable, the first anti-twisting strip, the second anti-twisting strip and the anti-twisting ball are arranged to limit and fix the conducting wire, when the conducting wire is subjected to twisting force, the first anti-twisting strip, the second anti-twisting strip, the anti-twisting ball and the conducting wire are limited mutually to avoid torsional deformation of the conducting wire, and meanwhile, the second anti-twisting strip and the anti-twisting ball are made of elastic materials to avoid damage to the conducting wire.

Drawings

Fig. 1 is a schematic structural diagram of an anti-twisting cable according to the present invention;

fig. 2 is a cross-sectional view taken along line a-a of fig. 1.

Detailed Description

Referring to fig. 1 and 2, the invention provides an anti-distortion cable, which comprises a cable core, an inner sheath 1, a wrapping layer 2, a shielding layer 3 and an outer sheath 4, wherein the inner sheath 1, the wrapping layer 2, the shielding layer 3 and the outer sheath are sequentially wrapped outside the cable core; wherein:

the cable core comprises a central framework 5 and a plurality of wires 6. The central framework 5 is provided with a circle center section, a plurality of first torsion resistant strips 7 protruding outwards are arranged on the outer circumference of the central framework, the first torsion resistant strips 7 extend along the axial direction of the central framework 5, and the first torsion resistant strips 7 are provided with circular sections. A lead 6 is arranged between any two adjacent first torsion resistant strips 7, any lead 6 is abutted against the two adjacent first torsion resistant strips 7, and the inner side and the outer side of the lead 6 are abutted against the central framework 5 and the inner sheath 1 respectively.

The inner side of the inner sheath 1 is provided with second torsion resistant strips 8 protruding towards the direction of the first torsion resistant strips 7 and abutting against the first torsion resistant strips 7 at positions corresponding to the first torsion resistant strips 7, the second torsion resistant strips 8 extend along the axial direction of the central framework 5, the second torsion resistant strips 8 are provided with circular cross sections, a plurality of torsion resistant balls 9 arranged at intervals along the length direction of the second torsion resistant strips and abutting against the lead 6 are further arranged on two sides of the length direction of the second torsion resistant strips 8, and the second torsion resistant strips 8 and the torsion resistant balls 9 are made of elastic materials.

According to the anti-twisting cable provided by the invention, the conducting wire 6 is limited and fixed by arranging the first anti-twisting strip 7, the second anti-twisting strip 8 and the anti-twisting ball 9, when a twisting force is applied, the first anti-twisting strip 7, the second anti-twisting strip 8, the anti-twisting ball 9 and the conducting wire 6 are limited mutually, so that the conducting wire 6 is prevented from being twisted and deformed, and meanwhile, the second anti-twisting strip 8 and the anti-twisting ball 9 are made of elastic materials, so that the conducting wire 6 can be prevented from being damaged.

In the specific embodiment, a plurality of annular grooves 10 are formed in the outer part of the outer sheath 4 at intervals along the axial direction of the cable, a plurality of sliding grooves 11 are distributed at the bottom of each annular groove 10, an anti-torsion sleeve 12 capable of rotating relative to the outer sheath 4 is sleeved in each annular groove 10, sliding blocks 13 which are clamped in the sliding grooves 11 and can slide in the sliding grooves 11 are arranged at positions, corresponding to the sliding grooves 11, on the inner side of each anti-torsion sleeve 12, and two ends of each anti-torsion sleeve 12 are connected with the outer. When the cable is subjected to torsional force, the anti-torsion sleeve 12 slightly rotates relative to the outer sheath 4, partial torsional force is absorbed, the torsional force applied to the metal conductor in the cable core is reduced, and the service life of the cable is prolonged.

In a particular embodiment, the cross-sectional area of the first torsion bar 7 is larger than the cross-sectional area of the second torsion bar 8, and the cross-sectional area of the second torsion bar 8 is larger than the cross-sectional area of the torsion balls 9.

In a particular embodiment, in order to increase the heat dissipation capacity of the cable, a through-hole 14 is provided in the first torsion bar 7 extending along its length.

The above description is only for 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 should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An anti-distortion cable comprises a cable core, an inner sheath, a wrapping layer, a shielding layer and an outer sheath, wherein the inner sheath, the wrapping layer, the shielding layer and the outer sheath are sequentially wrapped outside the cable core;

the method is characterized in that:

the central framework is provided with a circular cross section, a plurality of first torsion resistant strips protruding outwards are arranged on the outer circumference of the central framework, the first torsion resistant strips extend along the axial direction of the central framework and are provided with circular cross sections, a conducting wire is arranged between any two adjacent first torsion resistant strips, any conducting wire is abutted against the two adjacent first torsion resistant strips, and the inner side and the outer side of the conducting wire are abutted against the central framework and the inner sheath respectively; the inner side of the inner sheath is provided with second torsion resistant strips which are protruded towards the first torsion resistant strips and abut against the first torsion resistant strips at positions corresponding to the first torsion resistant strips, the second torsion resistant strips axially extend along the central framework and are provided with circular cross sections, and a plurality of torsion resistant balls which are arranged at intervals along the length direction of the second torsion resistant strips and abut against the conducting wire are further arranged on two sides of the second torsion resistant strips in the length direction;

a plurality of annular grooves are formed in the outer part of the outer sheath at intervals along the axial direction of the cable, and an anti-torsion sleeve which can rotate relative to the outer sheath is sleeved in each annular groove; a plurality of sliding grooves are distributed at the bottom of the annular groove, and sliding blocks which are clamped in the sliding grooves and can slide in the sliding grooves are arranged at the positions, corresponding to the sliding grooves, of the inner side of the anti-torsion sleeve.

2. The twist-resistant cable according to claim 1, wherein the second twist bar and the twist balls are made of an elastic material.

3. The twist-resistant cable as claimed in claim 1, wherein both ends of the torsion-resistant sheath are connected with the outer sheath by screws.

4. The twist-resistant cable of any one of claims 1-3, wherein the cross-sectional area of the first twist resistant strip is greater than the cross-sectional area of the second twist resistant strip, and the cross-sectional area of the second twist resistant strip is greater than the cross-sectional area of the twist resistant balls.

5. A twist-resistant cable according to any one of claims 1-3, wherein the first twist bar is provided with a through hole extending along its length.