CN203787192U

CN203787192U - Three-core cable

Info

Publication number: CN203787192U
Application number: CN201420217417.9U
Authority: CN
Inventors: 何义书; 徐桂林; 邓华理
Original assignee: Sichuan Tongshen Cable Co Ltd
Current assignee: Sichuan Tongshen Cable Co Ltd
Priority date: 2014-04-30
Filing date: 2014-04-30
Publication date: 2014-08-20
Anticipated expiration: 2024-04-30

Abstract

The utility model relates to a three-core cable comprising three conductive cable cores (1), a temperature-resistant insulating layer (2), and a bottom outer sheath (4). The three conductive cable cores (1) are arranged in parallel. The temperature-resistant insulating layer (2) wraps the three conductive cable cores (1) and is wrapped in the bottom outer sheath (4). A metallic sheath (3) is arranged between the bottom outer sheath (4) and the temperature-resistant insulating layer (2). A bearing structure is disposed on the top of the outer side of the bottom outer sheath (4), and is composed of a bearing cable (5) and a top outer sheath (6) connected with the bottom outer sheath (4). The bearing cable (5) is disposed on the inner side of the top outer sheath (6). The three-core cable has advantages of a good bearing capability, good temperature-resistant performance, and a long service life.

Description

A kind of cable of three-core structure

Technical field

The utility model relates to the cable of heatproof length apart from the power transmission cable, particularly a kind of three-core structure of environment use.

Background technology

Along with the fast development of national economy, as the aortal electric wire of national economy, its consumption and the scope of application are increasing.Common cable; generally comprise from inside to outside conductor, insulating barrier and protective layer, protective layer is for the protection of conductor and insulating barrier, and the general polyethylene with flame retardant effect that adopts of cable is as protective layer; and polythene material is easily aging under warm environment, heat resistance is poor.The ordinary construction cable temperature resistant grade generally using is at present lower, and the bulk strength of cable is inadequate, and along with laying apart from increasing, cable deadweight is increasing, long apart from the easily disconnected core phenomenon of appearance of cabling, therefore cannot grow distance and lay.

Utility model content

The purpose of this utility model is to overcome the shortcoming of prior art, provides that a kind of weight capacity is strong, heat resistance good and the cable of the three-core structure of long service life.

The purpose of this utility model is achieved through the following technical solutions: a kind of cable of three-core structure, it comprises three conductions cable core, temperature insulation layer and lower oversheaths, three described conduction cable cores are parallel to each other, temperature insulation layer is coated on the outside of three conduction cable cores, the outside of temperature insulation layer is also provided with lower oversheath, between described lower oversheath and temperature insulation layer, is also provided with metallic sheath; Top, lower oversheath outside is provided with load-carrying members, and described load-carrying members comprise load-bearing cable and upper oversheath, and upper oversheath is connected with lower oversheath, and load-bearing cable is arranged at the inner side of oversheath.

Described load-bearing cable is parallel with conduction cable core.

Described metallic sheath is that copper pipe is made.

Described lower oversheath and the upper oversheath structure that is formed in one.

The utlity model has following advantage:

1, at the upside of cable, load-carrying members are set, load-carrying members are made up of oversheath and load-bearing cable, when cabling, and the total weight of load-bearing cable supporting cable, and also weight capacity is strong.

2, between metallic sheath and cable, fill temperature insulation layer, both played insulating effect, make cable and external insulation, play again high-and low-temperature resistance effect.

3, the oversheath of load-carrying members and the oversheath of cable are one-body molded, and the patience of oversheath is good, and load-bearing cable is parallel with conduction cable core, and load-bearing cable is only subject to axial tensile force, and not easy fracture is conducive to extend useful life of cable.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is schematic cross-section of the present utility model;

In figure: 1-conducts electricity cable core, 2-temperature insulation layer, 3-metallic sheath, oversheath under 4-, 5-load-bearing cable, the upper oversheath of 6-.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described, but protection range of the present utility model is not limited to the following stated.

As depicted in figs. 1 and 2, a kind of cable of three-core structure, it comprises three conductions cable core 1, temperature insulation layer 2 and lower oversheaths 4, three described conduction cable cores 1 are parallel to each other, temperature insulation layer 2 is coated on the outside of three conduction cable cores 1, the outside of temperature insulation layer 2 is also provided with lower oversheath 4, between described lower oversheath 4 and temperature insulation layer 2, is also provided with metallic sheath 3; Lower oversheath 4 tops, outside are provided with load-carrying members, and described load-carrying members comprise load-bearing cable 5 and upper oversheath 6, and upper oversheath 6 is connected with lower oversheath 4, and load-bearing cable 5 is arranged at the inner side of oversheath 6.

Described load-bearing cable 5 is parallel with conduction cable core 1, and 5 of load-bearing cables are subject to the Unidirectional acting force of axial tension, not easy fracture of load-bearing cable 5.

Described metallic sheath 3 is made for copper pipe, can shield external interference, can strengthen again the tensile strength of cable.

Described lower oversheath 4 and upper oversheath 6 structure that is formed in one, makes the patience of oversheath better, is conducive to extend the useful life of cable.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.

Claims

1. the cable of a three-core structure, it is characterized in that: it comprises three conduction cable cores (1), temperature insulation layer (2) and lower oversheath (4), described three conduction cable cores (1) are parallel to each other, temperature insulation layer (2) is coated on the outside of three conduction cable cores (1), the outside of temperature insulation layer (2) is also provided with lower oversheath (4), between described lower oversheath (4) and temperature insulation layer (2), is also provided with metallic sheath (3); Top, lower oversheath (4) outside is provided with load-carrying members, and described load-carrying members comprise load-bearing cable (5) and upper oversheath (6), and upper oversheath (6) is connected with lower oversheath (4), and load-bearing cable (5) is arranged at the inner side of oversheath (6).

2. the cable of a kind of three-core structure according to claim 1, is characterized in that: described load-bearing cable (5) is parallel with conduction cable core (1).

3. the cable of a kind of three-core structure according to claim 1, is characterized in that: described metallic sheath (3) is made for copper pipe.

4. the cable of a kind of three-core structure according to claim 1, is characterized in that: described lower oversheath (4) and upper oversheath (6) structure that is formed in one.