CN202275617U

CN202275617U - Robust pulling-resistant bending-resistant cable for slag tank car

Info

Publication number: CN202275617U
Application number: CN2011203728169U
Authority: CN
Inventors: 鞠晨雁; 李金明; 张勇
Original assignee: Jiangsu Hengtong Power Cable Co Ltd
Current assignee: Jiangsu Hengtong Power Cable Co Ltd
Priority date: 2011-10-08
Filing date: 2011-10-08
Publication date: 2012-06-13
Anticipated expiration: 2021-10-08

Abstract

The utility model relates to a robust pulling-resistant bending-resistant cable for a slag tank car, comprising a plurality of insulating cores and sheaths wrapping the exterior of the insulating cores. The insulating core comprises a plurality of conductors and an EP rubbers insulating layer wrapping each conductor. The conductor comprises a tin-coated copper filament and a steel filament, with the tin-coated copper filament and the steel filament being mixed and twisted. An isolating strip is arranged between every two adjacent insolating cores. The sheath comprises an inner sheath layer, a braiding fibrous layer, and an oversheath layer which are sequentially arranged from inside to outside. The twisting of the steel filament and the tin-coated copper filament improves the pulling-resistant and bending-resistant capability of the conductors. The arrangement of the isolating strip between every two adjacent cores effectively avoids the sliding offsetting and fracture of the cores resulting from the long-term bending of the cable. The sheath employs a structure composed of an inner sheath, a braiding fiber, and an oversheath, thereby enhancing the pulling-resistant capability of the cable, prolonging the service life of the cable, reducing the overhaul and maintenance frequency, and improves the utilization rate of the cable.

Description

The counter-bending slag ladle vehicular cable of high tensile

Technical field

the utility model relates to steel mill's technical field of smelting, particularly relates to a kind of counter-bending slag ladle vehicular cable of high tensile of being electrically connected between slag ladle and carriage and the regulator cubicle of being used for.

Background technology

slag ladle and carriage cable is that the smelting iron and steel industry is used for the cable that is electrically connected between slag ladle and carriage and the regulator cubicle, because slag ladle and carriage often is in frequent moving and crooked dilatory state, the cable life cycle is shorter; Change frequently, not only Financial cost improves, and in case economic accident occurs; The loss that causes is inestimable; This cable is because specification requirement is higher, and this cable relies on Japanese import before always, in the recent period owing to influenced by Japanese violent earthquake; Make can not get guaranteeing the delivery date of cable, therefore use producer to desire to seek state inner cable supplier this cable of Development and Production.Along with the development of present smelting iron and steel industry, traditional slag ladle and carriage cable can not satisfy the user demand of novel modernized steel mill far away simultaneously, needs the cable that a kind of high tensile is counter-bending and useful life is long especially.

traditional slag ladle and carriage cable, its be tinned copper wire stranded after, extrude ethylene propylene rubber insulated, afterwards according to extruding the neoprene oversheath behind the stranding side by side.The drawback that this kind structure exists is following:

1, since the slag ladle and carriage cable in use, long-term frequent crooked moving under hot environment, the cable cover(ing) layer is prone to damage, the damage insulation causes puncture, shortens cable useful life greatly;

2, the conductor of cable fractures easily and is out of shape and causes insulation " bulge " through long-term stretching and bending;

3, after the cable run duration bore powerful impact such as pulling force, pressure, bending, friction, the cable machinery performance descended to some extent;

4, cable are through long-term bending, the cable core dislocation of sliding easily, and cable core is not easy to recover original position, make the insulation of cable cause permanent distortion, and this distortion can cause the fracture of heart yearn immediately.

The counter-bending slag ladle vehicular cable of a kind of novel high tensile is therefore urgently sought, to satisfy the needs of China's smelting iron and steel industry development because above defective can not satisfy the instructions for use of present steel mill in .

Summary of the invention

The purpose of the utility model provides the counter-bending slag ladle vehicular cable of a kind of high tensile.

For achieving the above object, the technical scheme that the utility model adopts is:

The counter-bending slag ladle vehicular cable of a kind of high tensile; This cable comprises many insulated core, is coated on the outside sheath of described insulated wire cores; Described insulated wire cores comprises many conductors, is extruded in the every ethylene propylene rubber insulated layer that described conductor is outside; Described conductor comprises tinned copper wire, steel wire, and described tinned copper wire, steel wire mix stranded mutually; Be provided with the isolation strip between adjacent two described insulated wire cores; Described sheath comprises inner restrictive coating, layers of braided fibers and the external sheath layer that sets gradually from the inside to the outside.

preferably, the length of described isolation strip is identical with the diameter of cable.

preferably, the thickness of described isolation strip is not less than 3mm.

preferably, the material of described layers of braided fibers is the aramid fiber silk.

preferably, the material of described inner restrictive coating, external sheath layer is a flame-retardant chloroprene rubber.

Because the technique scheme utilization, the utility model compared with prior art has advantage:

The first, because conductor adopts 5 types of (5 types of conductor structure types of representing cable; Represent the flexible conductor structure type) tinned copper wire and steel wire mixing lay configuration; Reduced cable conductor effectively through long-term stretching and bending; Fracture easily distortion and cause the phenomenon of insulation " bulge ", and greatly improved the resistance to tension and the counter-bending ability of cable;

The second, owing between insulated wire cores, increased the isolation strip; Solved insulated wire cores bending distortion slip dislocation afterwards effectively; Insulated wire cores is not easy to return to original position; The insulation of cable causes permanent distortion, the technical barrier of the fracture of heart yearn and this distortion can cause insulating immediately;

the 3rd, changed the jacket structure of cable, made it to become inner sheath+high strength braided fiber+outer jacket structure, the resistance to tension of cable is improved by former independent outer jacket structure; Bending resistance has also obtained strengthening greatly; Nearly 200 times of the resistance to tension of increase cable, the useful life of increase cable, the maintenance and the maintenance frequency of reduction cable; Improve the utilance of cable, to satisfy the needs and the production domesticization demand of present China modernization steel mill.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

accompanying drawing 2 is the processing technology figure of the utility model.

wherein: 1, insulated wire cores; 10, conductor; 11, ethylene propylene rubber insulated layer; 12, rubber packed layer; 13, flame-retardant chloroprene rubber inner restrictive coating; 14, glass tape; 15, semi-conductive layer; 2, isolation strip; 3, sheath; 30, flame-retardant chloroprene rubber inner restrictive coating; 31, fibrage layer; 32, flame-retardant chloroprene rubber external sheath layer.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

The counter-bending slag ladle vehicular cable of a kind of high tensile that are as shown in Figure 1, this cable comprises 4 insulated cores 1, and wherein: 2 of both sides is the insulated wire cores 1 of same structure, and middle 2 is the insulated wire cores 1 of same structure.

The insulated wire cores 1 of both sides comprises 3 conductors 10, is extruded in the ethylene propylene rubber insulated layer 11 of every conductor 10 outsides; 3 conductors 10 hold glass tape 14 after extruding flame-retardant chloroprene rubber inner restrictive coating 13 again, and between ethylene propylene rubber insulated layer 11 filled rubber packed layer 12.Does what wherein: conductor 10 adopt 5 types and (refers to?) tinned copper wire and steel wire mix stranded.

Insulated wire cores 1 in the middle of comprises some conductors 10, is extruded in the ethylene propylene rubber insulated layer 11 of every conductor 10 outsides; Some conductors 10 hold glass tape 14 after extruding flame-retardant chloroprene rubber inner restrictive coating 13 again; Segment conductor 10 coats semi-conductive layer 15 after extruding flame-retardant chloroprene rubber inner restrictive coating 13 again, and between ethylene propylene rubber insulated layer 11 or semi-conductive layer 15 filled rubber packed layer 12.Wherein: conductor 10 adopts 5 types of tinned copper wires and steel wire to mix stranded.

Be provided with isolation strip 2 between adjacent 2 insulated cores 1, the length of isolation strip 2 is identical with the diameter of insulated wire cores 1, and thickness is not less than 3mm.

are covered with sheath 3 in 4 insulated cores, 1 external packets; Sheath 3 comprises flame-retardant chloroprene rubber inner restrictive coating 30, layers of braided fibers 31 and the flame-retardant chloroprene rubber external sheath layer 32 that sets gradually from the inside to the outside; The material of layers of braided fibers 31 is selected the aramid fiber silk; The aramid fiber silk is the Fanglun 1414, has that percentage elongation is little, tensile strength is big, Young's modulus is high, does not melt, advantage such as not combustion-supporting and corrosion-resistant.

Below set forth the process of present embodiment down:

are as shown in Figure 2, at first carry out the copper wire drawing, and copper wire is annealed and zinc-plated back and steel wire mixing twisted wire; Steel wire and steel wire are closely stranded after one earlier, are incorporated into together with the tin-coated copper tow again, and bundle closes conductor structure should be closely, no loose; Bundle closes that tinned copper wire does not have bad phenomenon such as wire jumper, broken string, foaming in the conductor; Bundle closes the conductor winding displacement should be closely, even, must not intersect line ball, must not pollute, and process conductor 10; Conductor 10 is extruded ethylene propylene rubber insulated layer 11; Process insulated wire cores 1; Many insulated core 1 coats flame-retardant chloroprene rubber inner restrictive coating 30, layers of braided fibers 31 and flame-retardant chloroprene rubber external sheath layer 32 through isolation strip 2 after at interval successively, and accomplishes final system cable.

the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection range of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the utility model.

Claims

1. counter-bending slag ladle vehicular cable of high tensile; This cable comprises many insulated core, is coated on the outside sheath of described insulated wire cores; Described insulated wire cores comprises many conductors, is extruded in the every ethylene propylene rubber insulated layer that described conductor is outside; It is characterized in that: described conductor comprises tinned copper wire, steel wire, and described tinned copper wire, steel wire mix stranded mutually; Be provided with the isolation strip between adjacent two described insulated wire cores; Described sheath comprises inner restrictive coating, layers of braided fibers and the external sheath layer that sets gradually from the inside to the outside.

2. the counter-bending slag ladle vehicular cable of high tensile according to claim 1 is characterized in that: the length of described isolation strip is identical with the diameter of insulated wire cores.

3. the counter-bending slag ladle vehicular cable of high tensile according to claim 1, it is characterized in that: the thickness of described isolation strip is not less than 3mm.

4. the counter-bending slag ladle vehicular cable of high tensile according to claim 1 is characterized in that: the material of described layers of braided fibers is the aramid fiber silk.

5. the counter-bending slag ladle vehicular cable of high tensile according to claim 1 is characterized in that: the material of described inner restrictive coating, external sheath layer is a flame-retardant chloroprene rubber.