CN201345234Y

CN201345234Y - Flexible and movable cable

Info

Publication number: CN201345234Y
Application number: CNU2009201427259U
Authority: CN
Inventors: 何夕松
Original assignee: Anhui Long'an Cable Group Co Ltd
Current assignee: Anhui Long'an Cable Group Co Ltd
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2009-11-11
Anticipated expiration: 2019-01-14

Abstract

The utility model relates to a flexible and movable cable, which is characterized in that a conductor is formed by formally and jointly bunch stranding or stranding a sixth tinned copper wire; an insulating layer is extruded and enwrapped on the conductor to form an insulated wire core; a cable core is independently formed by the single insulated wire core or is formed by stranding a plurality of insulated wire cores; the stranded pitch is 15 to 20; a bearing reinforced layer formed by weaving aramid fibers with high elastic modulus and strength is arranged outside the cable core; an outer sheath layer formed by polyurethane materials is extruded and enwrapped outside an outermost layer; and the insulating layer is made of ethylene propylene rubber mixtures. The flexible and movable cable can be suitable for different working environments and has the advantages of flexibility, moisture resistance, weather resistance, wear resistance, notching resistance, cutting resistance, low adhesion, oil resistance, chemical resistance and the like.

Description

A kind of soft mobile model cable

Technical field

The utility model relates to cable, and the removable cable of especially a kind of softness belongs to technical field of electric wires and cables.

Background technology

Construction in the open air at present, engineering such as operation is more and more under the ore deposit, and many heavy mechanical equipment transmission ﹠ distribution electric energy or control signal need soft type with cable, in use will frequently move.Require cable that wideer service condition, higher service efficiency and longer useful life are arranged.Therefore cable to have pliability, resistance to wear, anti-indentation, anti-cutting, lowly stick, good performances such as oil resistant and chemical resistance.The particularity of environment for use makes this class cable also will bear certain external force effect that pulls.Cable flexibility design service life is 5,000,000 times a reversed bending; The short-term bear external force of cable is 10 meters long from weight.But existing cable can not satisfy this generic request well.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of soft mobile model cable is provided, make it can adapt to multiple different operational environment, and have pliability, moisture-proof, weather-proof, resistance to wear, anti-indentation, anti-cutting, lowly stick, performances such as oil resistant and chemical resistance.

The utility model technical solution problem adopts following technical scheme:

The design feature of the soft mobile model cable of the utility model is that conductor is to constitute with the compound strand of the 6th kind of tinned copper wire by orthodox beam strand and burst strand, the extruded insulation layer forms insulated wire cores on conductor, independently become cable core or be twisted into cable core by many eradications edge core by single insulated wire cores, stranded lay ratio is 15-20; Aramid fiber with high elastic modulus and intensity outside described cable core forms the load-bearing reinforced layer through braiding, and outermost layer extrudes polyurethane material and forms external sheath layer; Described insulating barrier is to be material with the ethylene-propylene rubber mixture.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model adopts tinned copper wire, can prevent effectively that copper conductor from increasing problems such as heating because of oxidation makes itself and joint resistance; Advantages such as it is more soft to adopt the 6th kind of conductor that cable is had, and bending radius is very little; Conductor structurally adopts orthodox beam strand, strand strand composite construction, is whole symmetrical structure, makes that cable is stressed in BENDING PROCESS evenly to be stablized.

2, insulating barrier is to be material with soft and high-intensity ethylene-propylene rubber mixture in the utility model, and process is reliable and stable, easy to operate.Material source is wide, and price is low, and production cost is low, and material resistance is higher, and dielectric loss is less.

3, the highest long-term permission serviceability temperature of conductor can reach 90 ℃ in the utility model, the current-carrying capacity of cable height, and it is good to bear overload performance.

4, the lay ratio that many eradication edge cores are twisted into the insulation cable core in the utility model is controlled at 15-20, the load-bearing reinforced layer that the aramid fiber braiding forms plays carrying on the one hand and pulls the external force effect, makes cable core absorb impact energy or amount of torsional energy with oversheath on the other hand.

5, middle external sheath layer of the present utility model adopts polyurethane material, its superiority is embodied in: (1) is not easy to because of various environmental factors ageing hardening as PVC, can as PE, not wear out and stress cracking yet, cause the electric property of cable and environmental resistance to reduce; (2) the same with rubber wear-resisting, soft, characteristics that weather resisteant is good are arranged, but its processing technology is much simpler than rubber, can adds hot-extrudablely, and need not vulcanize as materials such as PVC, PE; (3) under-60 ℃ of low temperature condition, still can keep good bending property, even repeatedly also can not ftracture with very little bend radius; (4) relatively good with the adhesion of other various cable materials (as aramid fiber, nonwoven fabrics etc.); (5) in atmosphere such as greasy dirt, chemicals, soda acid, also has premium properties.

Description of drawings

Fig. 1 is the utility model list core pattern construction of cable schematic diagram.

Fig. 2 is the utility model three-hole construction of cable schematic diagram.

Number in the figure: 1 conductor; 2 insulating barriers; 3 load-bearing reinforced layers; 4 external sheath layers; 5 fill; 6 bands.

Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment

Referring to Fig. 1, Fig. 2, conductor 1 is to constitute with the compound strand of the 6th kind of tinned copper wire by orthodox beam strand and burst strand, and the twisted wire pitch limit has flexibility surface rounding property preferably to guarantee conductor in 12 times, insulating barrier is easily peeled off; Extruded insulation layer 2 forms insulated wire cores on conductor 1, allows separator between insulating barrier 2 and the conductor 1, independently becomes cable core (as shown in Figure 1) by single insulated wire cores, or is twisted into cable core (as shown in Figure 2) by many eradications edge core, and stranded lay ratio is 15-20; Aramid fiber with high elastic modulus and intensity outside cable core forms load-bearing reinforced layer 3 through braiding, plays carrying and pulls the external force effect; Outermost layer extrudes has polyurethane material formation external sheath layer 4 wear-resisting, soft, the weather resisteant energy; Between external sheath layer 4 and load-bearing reinforced layer 3, allow separator.

Insulating barrier 2 is to be material with soft and high-intensity ethylene-propylene rubber mixture, reliable and stable, the easy operating of process.As insulating layer material, its source is wide with the ethylene-propylene rubber mixture, and price is low, and production cost is low, and material resistance is higher, and dielectric loss is less, and the highest long-term permission serviceability temperature of conductor can reach 90 ℃, the current-carrying capacity of cable height, and it is good to bear overload performance.

Figure 2 shows that the three-hole cable, inject packed layer 5 in the space of insulation cable core, and form belting layer 6 in the appearance of packed layer 5 with band, its skin is followed successively by load-bearing reinforced layer 3 and the polyurethane external sheath layer 4 that extrudes formation for another example with shown in Figure 1.Between polyurethane outer jacket 4 and load-bearing reinforced layer 3, allow separator.

Claims

1, a kind of soft mobile model cable, its feature conductor (1) is to constitute with the compound strand of the 6th kind of tinned copper wire by orthodox beam strand and burst strand, go up extruded insulation layer (2) at described conductor (1) and form insulated wire cores, independently become cable core or be twisted into cable core by many eradications edge core by single insulated wire cores, stranded lay ratio is 15-20; Aramid fiber with high elastic modulus and intensity outside described cable core forms load-bearing reinforced layer (3) through braiding, and outermost layer extrudes polyurethane material and forms external sheath layer (4); Described insulating barrier (2) is to be material with the ethylene-propylene rubber mixture.