CN202373376U

CN202373376U - Coaxial cable for coal-mining machine

Info

Publication number: CN202373376U
Application number: CN2011205068746U
Authority: CN
Inventors: 姜睿
Original assignee: Anhui Jinqiao Cable Co Ltd
Current assignee: Anhui Jinqiao Cable Co Ltd
Priority date: 2011-12-08
Filing date: 2011-12-08
Publication date: 2012-08-08
Anticipated expiration: 2021-12-08

Abstract

The utility model discloses a coaxial cable for a coal-mining machine, which comprises three control core conductors, three power core conductors and three grounding core conductors, wherein the three control core conductors are respectively coated with an insulation layer; the control core conductors coated with the insulation layers are stranded to be a bundle, and then are coated with a winding layer; the three power core conductors are respectively coated with an insulation layer and a shielding layer in sequence; the three grounding core conductors are respectively coated with an insulation layer; the grounding core conductors coated with the insulation layers and the three power core conductors coated with the shielding layers are stranded to a cable core by taking the three control core conductors coated with the winding layer as the center; an inner protective layer is arranged outside the cable core in an extrusion molding manner; a reinforcement layer is coated with the inner protective layer; and an outer protective layer is arranged outside the reinforcement layer in an extrusion molding manner. According to the coaxial cable, the cores have enough insulation strength, short circuit failure does not easily occur, and owing to reinforcement layers between the inner and the outer protective layers, the tensile strength, resistance to compression, abrasion resistance and mechanical properties are improved.

Description

A kind of coal-winning machine is used coaxial cable

Technical field:

The utility model relates to the cable technology field, relates in particular to coal-winning machine and uses coaxial cable.

Background technology:

Mining cable is meant that the ground installation that coal mining industry will is used uses the electric wire cable product with underground equipment. comprising coal-winning machine, transporter, communicate by letter, illumination and signalling arrangement use cable; And the electric drill cable, the feed cable that cap lamp electric wire and mobile substation, down-hole are used etc.

Electric cable for coal mining machine is the mining flame-retardant cable of People's Republic of China's coal industry (unification) design, and product is applicable to that the power supply of coal-winning machine and similar devices connects.

In cable and coal-winning machine equipment junction, original coal-winning machine insulation property do not reach the demand of actual working environment, and tensile strength is relatively poor, cause shorten the useful life of cable.

The utility model content:

To the prior art problem, the purpose of the utility model provides a kind of coal-winning machine and uses coaxial cable, reasonable in design, and good bending property, tensile strength are good, have satisfied the demand of actual working environment.

The technical scheme of the utility model is following:

Coal-winning machine is used coaxial cable; Comprise three control line core conductors, three power line core conductors, three earth connection core conductors; It is characterized in that: described three control line core conductors are enclosed with insulating barrier outward respectively; The mutual stranded bunchy of three control line core conductors of wrap insulate layer, the outer lapping layer that is surrounded with behind the bunchy; Three power line core conductors are enclosed with insulating barrier, screen outward respectively successively; Three earth connection core conductors are distinguished the wrap insulate layer outward; Three earth connection core conductors of wrap insulate layer are that the center is twisted into cable core with three power line core conductors that wrap up screen with three control line core conductors that wrap up lapping layer; The outer extrusion moulding of cable core has inner restrictive coating; Inner restrictive coating is wrapped with reinforced layer, and the outer extrusion moulding of reinforced layer has external sheath layer.

Described coal-winning machine is used coaxial cable, it is characterized in that: described three control line core conductor nominal crosss adopt 2.5 mm ²And 4mm ²Specification.

Described coal-winning machine is used coaxial cable, it is characterized in that: described reinforced layer adopts fibrage to constitute.

The utility model has the advantages that:

Conducting electricity very well of the utility model has enough dielectric strengths between the core, be difficult for outside the failed because, is provided with reinforced layer between its inside and outside restrictive coating, improved tension, resistance to compression, anti-wear performance, the mechanical performance of cable, satisfies the real work demand.

Description of drawings:

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

Embodiment:

Referring to Fig. 1:

Coal-winning machine is used coaxial cable; Comprise three control line core conductors 1, three power line core conductors 2, three earth connection core conductors 3; Three control line core conductor 1 outer insulating barriers 4 that are enclosed with respectively; Three control line core conductors, the 1 mutual stranded bunchy of wrap insulate layer 4, the outer lapping layer 5 that is surrounded with behind the bunchy; Three power line core conductor 2 outer insulating barrier 4, screens 6 of being enclosed with successively respectively; Three earth connection core conductor 3 outer wrap insulate layers 4 respectively; Three power line core conductors 2 of three earth connection core conductors 3 of wrap insulate layer 4 and parcel screen 6 are that the center is twisted into cable core with three control line core conductors 1 of parcel lapping layer 5; The outer extrusion moulding of cable core has inner restrictive coating 7; Inner restrictive coating 7 is wrapped with reinforced layer 8, and reinforced layer 8 outer extrusion moulding have external sheath layer 9.

Three control line core conductor 1 nominal crosss adopt 2.5 mm ²And 4mm ²Specification.

Reinforced layer 8 adopts fibrage to constitute.

Claims

1. a coal-winning machine is used coaxial cable; Comprise three control line core conductors, three power line core conductors, three earth connection core conductors; It is characterized in that: described three control line core conductors are enclosed with insulating barrier outward respectively; The mutual stranded bunchy of three control line core conductors of wrap insulate layer, the outer lapping layer that is surrounded with behind the bunchy; Three power line core conductors are enclosed with insulating barrier, screen outward respectively successively; Three earth connection core conductors are distinguished the wrap insulate layer outward; Three earth connection core conductors of wrap insulate layer are that the center is twisted into cable core with three power line core conductors that wrap up screen with three control line core conductors that wrap up lapping layer; The outer extrusion moulding of cable core has inner restrictive coating; Inner restrictive coating is wrapped with reinforced layer, and the outer extrusion moulding of reinforced layer has external sheath layer.

2. coal-winning machine according to claim 1 is used coaxial cable, it is characterized in that: described three control line core conductor nominal crosss adopt 2.5 mm ²And 4mm ²Specification.

3. coal-winning machine according to claim 1 is used coaxial cable, it is characterized in that: described reinforced layer adopts fibrage to constitute.