CN202473355U

CN202473355U - Hoisting cable

Info

Publication number: CN202473355U
Application number: CN 201220113258
Authority: CN
Inventors: 徐静; 张春美
Original assignee: Far East Cable Co Ltd; New Far East Cable Co Ltd; Far East Composite Technology Co Ltd
Current assignee: Far East Cable Co Ltd; New Far East Cable Co Ltd; Far East Composite Technology Co Ltd
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2012-10-03
Anticipated expiration: 2022-03-23

Abstract

The utility model discloses a hoisting cable. The hoisting cable comprises a cable core, a wrapping tape, a protection layer, a fan-shaped filling layer and a fiber composite enhanced tensile layer, wherein the cable core is formed by twisting multiple insulated wire cores, the wrapping tape and the protection layer are sequentially and externally coated on the cable core, the fan-shaped filling layer is arranged between the cable core and the wrapping tape, and the fiber composite enhanced tensile layer is arranged at the inner part of the fan-shaped filling layer. According to the hoisting cable disclosed by the utility model, the fiber composite enhanced tensile layer which is formed by a fiber composite core is used for replacing a steel wire armor, the strength of the composite core is considerably higher than that of a steel wire, the specific gravity of the composite core is a quarter of that of the steel wire, thus the main body weight of the hoisting cable is greatly reduced, and the tensile strength of the whole hoisting cable is increased.

Description

A kind of crane cable

Technical field

The utility model relates to the crane cable that uses in a kind of skyscraper, the deep-well power transmission lines, is to the improvement of existing skyscraper with the multicore crane cable.

Background technology

Along with the construction and the development in city, skyscraper is more and more, and power consumption is increasing, therefore needs jumbo cable to satisfy the transmission of electricity requirement.And main cable generally adopts vertical run in the high-rise.In this occasion; Require cable can not only satisfy the requirement of carrying electric current, and cable needs itself can bear certain pulling force, for the main cable of multistoried building generally all more than 5 tons; Therefore, this time, people generally selected some to have the cable of resistance to tension.

Present modal tension cable is the wire armoring power cable; Its structure is that band forms cable core behind many insulated core stranding; Outside cable core, extrude one deck inner covering then, tighten solid matter at the circumference of inner covering and show steel wire, make cable in laying and using, can bear certain pulling force.The defective below but the cable of this structure exists: one, weight is big; Two, periphery steel wire radical is many, fixing difficulty, and difficulty of construction is big; Three, steel wire also can produce a normal pressure to insulated wire cores when bearing pulling force in actual use, because steel wire is a rigid material, causes the damage of inner covering or insulating barrier easily, thereby has influenced the insulation property of cable; Four, because cable core outside has increased inner covering and armour, make the cable difficulty of in running, dispel the heat, so ampacity reduces relatively, the armoured cable of same cross-sectional will reduce 30% than unarmored cable at flow, makes the cable cost raising; Five, this cable has increased inner covering and armour, has increased cable production process and material usage, and technology is loaded down with trivial details to be increased with cost thereby cause; Six, the power that can bear of this cable receives the restriction that the steel wire radical can be arranged in the cable core outside, so resistance to tension is limited, generally is not suitable for place highly high, that drop is big; Seven, there is magnetic hysteresis loss in steel wire armored cable in running, has reduced current-carrying capacity of cable.

In order to improve the shortcoming that conventional wire armoring is brought as the tension power cable; People have taked various measures to solve, and like ZL 200520070092.7 " crane cable for high-building " patent that application has, the insulation cable core of this cable adopts single core insulation cable; Be the fan-shaped filling of cambered surface with three by carrying steel core outsourcing insulation cross section between single core insulation cable; Both stranded strandings, periphery is tightened by the binding of high strength band, and this cable has had bigger improvement than steel wire armored cable; There is following shortcoming but throw away: 1, still adopt steel wire as load spare, so the weight of cable is still heavier; 2. this cable adopts three single-core cables, and three single-core cables carry out sheath respectively, have increased cost; 3, behind three cable strandings, adopt and extrude steel wire rope and roll band, make production process loaded down with trivial details like this, and increased cost greatly as tying up; 4. though adopt special suspender when this cable laying is installed, but suspender is complicated heavy, install loaded down with trivial detailsly, bring difficulty to construction.

The utility model content

The purpose of the utility model is to overcome the deficiency of above-mentioned existing crane cable, provides a kind of and has that tensile strength is big, in light weight, current capacity is big, install and lay easy crane cable.

The technical scheme that realizes the utility model purpose is a kind of crane cable, comprise by the stranded cable core that forms of many insulated core, wrap in cable core outer twining package tape and outer jacket successively and be arranged at cable core and twining package tape between fan-shaped packed layer; Comprise that also being arranged at the inner fiber composite of fan-shaped packed layer strengthens tensile layer.

Said fiber composite strengthens the intensity >=2200MPa of tensile layer.

Said fiber composite strengthens tensile layer and can for the only son and heir or the plurality of fibers composite core is stranded forms, and the diameter of the only son and heir's fiber composite core is at 2～12mm; The diameter that the stranded fiber composite that forms of plurality of fibers composite core strengthens tensile layer is 4.5mm～20mm, and the fiber composite core radical can be 1～37.

When crane cable was low-voltage cable, said insulated wire cores comprised conductor and insulating barrier from the inside to the outside; When crane cable was midium voltage cable, said insulated wire cores comprised conductor, insulating barrier and metal screen layer from the inside to the outside, and said insulating barrier comprises inner shield, insulation and external shield from the inside to the outside.

Adopted technique scheme; The utlity model has following beneficial effect: the fiber composite that (1) the utility model adopts fiber composite core to constitute strengthens tensile layer and replaces wire armoring; Because the intensity of composite core is far above the intensity of steel wire; And the proportion of composite core has only 1/4 of steel wire, so just greatly reduces this body weight of cable, has improved the tensile strength of whole cable.

(2) the utility model places fan-shaped filling inner through the fiber composite enhancing tensile layer that fiber composite core is constituted, and protects and the armouring operation in so not only having saved, and has dwindled the outside diameter of cable simultaneously, has practiced thrift the sheath material.

(3) extrude one deck outer jacket again behind insulated wire cores of the utility model and the fan-shaped filling stranding; Distinguish sheath stranding again with respect to single-core cable like this; Practice thrift cost greatly, also saved the binding strap cost and the operation of the existing patent crane cable for high-building in the background technology simultaneously.

(4) the very ripe special-purpose strain clamp of the technology that is equipped with of the crane cable of the utility model has not only been simplified production technology, has improved production efficiency, and its installation hangs head special gold utensil is arranged, and fail safe is good, brings great convenience to installation.

(5) there is not magnetic material in the crane cable inside of the utility model, so the time there is not magnetic hysteresis loss in the cable operation, has improved the current capacity and the transfer efficiency of cable.

Description of drawings

For the content that makes the utility model is expressly understood more easily,, the utility model is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing

Fig. 1 is the first example structure sketch map of the utility model.

Fig. 2 is the second example structure sketch map of the utility model.

Label in the accompanying drawing is:

Insulated wire cores 1, conductor 11, insulating barrier 12, inner shield 121, insulation 122, external shield 123, metal screen layer 13, twining package tape 2, outer jacket 3, fan-shaped packed layer 4, fiber composite strengthen tensile layer 5.

Embodiment

(embodiment 1)

See Fig. 1; A kind of crane cable of present embodiment is a midium voltage cable, comprises by three insulated cores, the 1 stranded cable core that forms, wraps in cable core outer twining package tape 2 and outer jacket 3 successively, is arranged at the fan-shaped packed layer 4 between cable core and the twining package tape 2 and is arranged at fan-shaped packed layer 4 inner fiber composite strengthening tensile layer 5.

Insulated wire cores 1 comprises conductor 11, insulating barrier 12 and metal screen layer 13 from the inside to the outside, and said insulating barrier 12 is three-layer insulated system, comprises from the inside to the outside inner shield 121, insulation 122 and external shield 123.

Fiber composite strengthens the intensity >=2200MPa of tensile layer 5.Fiber composite strengthens tensile layer 5 and forms for the plurality of fibers composite core is stranded; The diameter that fiber composite strengthens tensile layer 5 is 4.5mm～20mm; The fiber composite core radical can be 1～37; Fiber composite core is the compound core of high strength that fiber and resin solidification form, and aforesaid fiber can be selected from any one or combination in any of carbon fiber, glass fiber, basalt fibre.

(embodiment 2)

See Fig. 2, present embodiment is that the difference of low-voltage cable and embodiment 1 is: (1) insulated wire cores 1 comprises conductor 11 and insulating barrier 12 from the inside to the outside; (2) fiber composite enhancing tensile layer 5 is only son and heir's fiber composite core, and the fiber composite core diameter is at 2～15mm.

Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims

1. crane cable, comprise by the stranded cable core that forms of many insulated core (1), wrap in cable core outer twining package tape (2) and outer jacket (3) successively and be arranged at cable core and twining package tape (2) between fan-shaped packed layer (4); It is characterized in that: comprise that also being arranged at the inner fiber composite of fan-shaped packed layer (4) strengthens tensile layer (5).

2. a kind of crane cable according to claim 1 is characterized in that: said fiber composite strengthens the intensity >=2200MPa of tensile layer (5).

3. a kind of crane cable according to claim 2 is characterized in that: said fiber composite strengthens tensile layer (5) and can for the only son and heir or the plurality of fibers composite core is stranded forms, and the diameter of the only son and heir's fiber composite core is at 2～12mm; The diameter that the stranded fiber composite that forms of plurality of fibers composite core strengthens tensile layer (5) is 4.5mm～20mm, and the fiber composite core radical can be 1～37.

4. according to the described a kind of crane cable of one of claim 1 to 3, it is characterized in that: when crane cable was low-voltage cable, said insulated wire cores (1) comprised conductor (11) and insulating barrier (12) from the inside to the outside; When crane cable was midium voltage cable, said insulated wire cores (1) comprised conductor (11), insulating barrier (12) and metal screen layer (13) from the inside to the outside, and said insulating barrier (12) comprises inner shield (121), insulation (122) and external shield (123) from the inside to the outside.