A friction-resistant steel wire armored cable

Abstract

The utility model belongs to the technical field of armored cable production, and specifically relates to a friction-resistant steel wire armored cable, including a cable body, a filling layer, an armor layer and an outer protective layer, wherein the cable body is arranged inside the armor layer, the filling layer is filled between the armor layer and the cable body, and the outer protective layer is wrapped around the outside of the armor layer, and the armor layer includes: a steel belt and a steel bar, and the steel bar is integrally connected to the surface of the steel belt, and the outer protective layer includes: an outer sheath and a friction part, and the friction part is integrally arranged on the surface of the outer sheath. The utility model arranges the friction part integrally formed with the outer sheath on the surface of the outer sheath, so that the surface of the outer sheath will not directly generate friction with external objects, thereby effectively improving the friction resistance of the armored cable, and secondly, by designing the armor layer as a combination of a steel belt and a steel bar, when the armored cable is under pressure, the filling layer is squeezed more evenly, and the armor layer will not sink into the filling layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of armored cable production, and in particular relates to a friction-resistant steel wire armored cable. Background Art

[0002] Armored cable is a solid combination of conductors made of different materials installed in a metal sheath with insulating materials. Armored cables include armored thermocouples, armored thermal resistors, armored heaters and armored leads. They are mainly used for temperature measurement, signal transmission and special heating in chemical industry, metallurgy, machinery manufacturing, power generation and scientific experiments. The most used is armored thermocouples.

[0003] For example, a highly wear-resistant and waterproof armored photoelectric composite cable with publication number CN215118451U comprises a photoelectric composite cable core, a polyether TPU inner sheath wrapped around the photoelectric composite cable core, an inner layer of high-carbon steel wire armor wrapped around the inner layer of high-carbon steel wire armor, an outer layer of high-carbon steel wire armor wrapped around the outer layer of high-carbon steel wire armor, an armor wrapping support wrapped around the outer layer of high-carbon steel wire armor, and a polyether TPU outer sheath wrapped around the armor wrapping support. The utility model discloses a highly wear-resistant and waterproof armored photoelectric composite cable. When in use, the existing electric cable and optical cable are two independent cables, while the composite cable combines the electric cable and the optical cable together; the armor structure adopts double-layer steel wire armor, which is mostly used in submarine cables and less in electric cables and optical cables, thereby improving the mechanical strength and anti-corrosion ability of the electric cables and optical cables; the waterproofness and wear resistance of general cables are separate, while the composite cable is both waterproof and wear-resistant.

[0004] The inventor believes that the armored cables in the prior art have the following deficiencies:

[0005] 1. The outer sheath on the surface of the armored cable will directly cause friction with external objects, such as Figure 4 As shown, the outer sheath is directly worn and ruptured, affecting the safety of cable use;

[0006] 2. The armor layer in the armored cable is formed by cylindrical steel bars arranged continuously in a ring, such as Figure 4 As shown, when the cable is under external pressure, the arc-shaped bottom bulge of the cylindrical steel bar will directly squeeze the filling layer. Due to the arc-shaped bottom, the filling layer is unevenly stressed when under pressure, which can easily cause damage to the filling layer and cause one or more cylindrical steel bars to sink into the filling layer, affecting the service life and compression resistance of the cable. Utility Model Content

[0007] The utility model aims to provide a friction-resistant steel wire armored cable, aiming to solve the problems in the prior art that the outer sheath on the surface of the armored cable will produce direct wear and tear, and the armor layer inside the armored cable will sink into the filling layer, affecting the service life and pressure-bearing capacity of the cable.

[0008] To achieve the above object, the utility model provides the following technical solution: a friction-resistant steel wire armored cable, comprising a cable body, a filling layer, an armor layer and an outer protective layer, wherein the cable body is arranged inside the armor layer, the filling layer is filled between the armor layer and the cable body, the outer protective layer is wrapped outside the armor layer, and the armor layer comprises: a steel belt and a steel bar, wherein the steel bar is integrally connected to the surface of the steel belt;

[0009] The outer protective layer comprises: an outer sheath and a friction portion, and the friction portion is integrally arranged on the surface of the outer sheath.

[0010] As a preferred friction-resistant steel wire armored cable of the utility model, the cable body comprises: a conductor, an insulating layer and a shielding layer, the insulating layer is wrapped around the outside of the conductor, and the shielding layer is wrapped around the outside of the insulating layer.

[0011] As a preferred friction-resistant steel wire armored cable of the utility model, the filling layer is any one of a polyethylene filler or a polypropylene filler.

[0012] In order to improve the compressive capacity of the armor layer, as a preferred friction-resistant steel wire armored cable of the utility model, the cross-section of the steel bars is semicircular convex and is arranged in a continuous ring shape on the surface of the steel belt.

[0013] In order to improve the friction resistance of the armored cable, as a preferred friction-resistant steel wire armored cable of the utility model, the friction part is a semicircular body and is arranged in an array with equal intervals on the surface of the outer sheath.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model provides a friction part formed integrally with the outer sheath on the surface of the outer sheath, so that when the armored cable is used, the surface of the outer sheath will not directly rub against external objects, but will first rub against the friction part, thereby effectively improving the friction resistance of the armored cable and improving the safety of the cable in use;

[0016] 2. The utility model designs the armor layer as a combination of steel strips and steel bars, so that when the armored cable is under pressure, the filling layer is squeezed more evenly and the armor layer will not sink into the filling layer, thereby effectively improving the pressure-bearing capacity and service life of the armored cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the armor layer of the utility model;

[0021] Figure 4 It is a schematic diagram of the prior art structure.

[0022] In the figure: 1. cable body; 101. conductor; 102. insulation layer; 103. shielding layer; 2. filling layer; 3. armor layer; 301. steel belt; 302. steel bar; 4. outer protective layer; 401. outer sheath; 402. friction part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 The utility model provides the following technical solutions: a friction-resistant steel wire armored cable, comprising a cable body 1, a filling layer 2, an armor layer 3 and an outer protective layer 4, the cable body 1 is arranged inside the armor layer 3, the filling layer 2 is filled between the armor layer 3 and the cable body 1, the outer protective layer 4 is wrapped outside the armor layer 3, the armor layer 3 comprises: a steel belt 301 and a steel bar 302, the steel bar 302 is integrally connected to the surface of the steel belt 301;

[0025] The outer protective layer 4 includes: an outer sheath 401 and a friction portion 402 . The friction portion 402 is integrally arranged on the surface of the outer sheath 401 .

[0026] Preferably, the cable body 1 comprises: a conductor 101 , an insulating layer 102 and a shielding layer 103 , wherein the insulating layer 102 is wrapped around the outside of the conductor 101 , and the shielding layer 103 is wrapped around the outside of the insulating layer 102 .

[0027] During specific use, the conductor 101 is made of either copper or aluminum, the insulating layer 102 can be made of oil-impregnated cable paper, plastic or rubber, or can be made of materials commonly used for cable insulation on the market, and the shielding layer 103 is made of a metal shielding layer or an insulating shielding layer. Usually, the materials used for the metal shielding layer are mainly copper foil or copper braided shielding layer, while the insulating shielding layer is mainly made of polymer materials, such as metallized paper or semiconductor paper tape, etc. Since it is an existing mature technology, the details will not be elaborated here.

[0028] Preferably, the filling layer 2 is any one of polyethylene filler and polypropylene filler.

[0029] In specific use, polyethylene filler has good pressure resistance and corrosion resistance, and is particularly suitable for cables that need to be used in harsh environments; while polypropylene filler has high flexibility and heat resistance, and can adapt to deformation and high temperature environments inside the cable. When selecting filling layer 2, the filling can be selected according to the actual cable use environment.

[0030] Preferably, the cross section of the steel strips 302 is in a semicircular convex shape and is arranged in a continuous ring shape on the surface of the steel belt 301 .

[0031] During specific use, since the steel belt 301 is annular and wraps the filling layer 2, when the cable is under pressure, the steel belt 301 will not sink into the filling layer 2 and the pressure is balanced. Secondly, the arrangement of the steel strip 302 can further improve the pressure resistance.

[0032] Preferably, the friction parts 402 are semicircular and are arranged in an array with equal spacing on the surface of the outer sheath 401 .

[0033] During specific use, since the friction part 402 is arranged on the surface of the outer sheath 401, the friction part 402 can support the outer sheath 401. Therefore, when the cable is in use, the outer sheath 401 will not directly contact with external objects, and the outer sheath 401 will not be damaged or broken due to friction, which effectively improves the friction resistance.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A friction-resistant steel wire armored cable, comprising a cable body (1), a filling layer (2), an armor layer (3) and an outer protective layer (4), wherein the cable body (1) is arranged inside the armor layer (3), the filling layer (2) is filled between the armor layer (3) and the cable body (1), and the outer protective layer (4) is wrapped around the outside of the armor layer (3), characterized in that: The armor layer (3) comprises: a steel belt (301) and a steel bar (302), wherein the steel bar (302) is integrally connected to the surface of the steel belt (301); The outer protective layer (4) comprises: an outer sheath (401) and a friction portion (402), wherein the friction portion (402) is integrally arranged on the surface of the outer sheath (401).

2. The friction-resistant steel wire armored cable according to claim 1, characterized in that: The cable body (1) comprises: a conductor (101), an insulating layer (102) and a shielding layer (103); the insulating layer (102) is wrapped around the outside of the conductor (101), and the shielding layer (103) is wrapped around the outside of the insulating layer (102).

3. The friction-resistant steel wire armored cable according to claim 1, characterized in that: The filling layer (2) is any one of a polyethylene filler and a polypropylene filler.

4. The friction-resistant steel wire armored cable according to claim 1, characterized in that: The cross section of the steel strip (302) is in the shape of a semicircular protrusion and is arranged in a continuous ring shape on the surface of the steel belt (301).

5. The friction-resistant steel wire armored cable according to claim 1, characterized in that: The friction parts (402) are semicircular and are arranged in an array with equal spacing on the surface of the outer sheath (401).

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