CN202662375U - Flexible strong-tensile strength rubber sleeve cable - Google Patents

Abstract

The utility model discloses a flexible strong-tensile strength rubber sleeve cable. A filler is arranged in a gap in a cable core. An inner sheath is extruded outside the cable core. An outer sheath is extruded in an outermost layer. The cable core is formed by twisting a plurality of insulating wire cores and a reinforced core which is formed by twisting a plurality of stands of finer wires. Each insulating wire core is formed by combining a conductor, and a conductor shielding layer, an insulating layer and an insulating shielding layer, which sequentially wrap the conductor. The cable has the characteristics of high flexibility, strong tensile strength, high bending properties, long service life and the like.

Description

A kind of flexible high tensile Plastic-sheathed Cable

Technical field

The utility model relates to the power cable field, the Plastic-sheathed Cable that particularly a kind of flexibility is better, resistance to tension is stronger.

Background technology

Now, generally adopt two kinds of methods to improve the tensile property of cable both at home and abroad, a kind of is to increase the tensile property that soft steel core (or steel wire rope) improves whole strand of copper wire in the copper conductor of Plastic-sheathed Cable, another kind is to increase the resistance to tension that the tension silk improves whole strand of cable core in the middle of the cable insulation core, such as the reinforcing element that in cable core, is formed by the steel wire strand twisted wire of mentioning among ZL201020133016.7 and the ZL 201020133017.1, ZL 200420062459.6, adopt among ZL 200520072377.4 and the ZL 201120096786.3 with strengthening the be twisted together tension silk of formation of the soft steel wire of steel wire or multiply, then be placed on the performances such as stretching resistance that improve Plastic-sheathed Cable in conductor or the cable core.The opposing pulling force makes not fracture of copper conductor to the mechanism of copper conductor in the time of can satisfying like this Plastic-sheathed Cable and be moved in actual use bending, prolongs the useful life of Plastic-sheathed Cable.

According to long-term actual operating position, through market survey, behind dissection, the above two kinds of tensile type Plastic-sheathed Cables of analysis, can find that all there is very large shortcoming in two types Plastic-sheathed Cable: when increasing stone dead wire (or steel wire rope) in the copper conductor, at the stressed stone dead wire (or steel wire rope) that makes of cable when occuring bending and deformation, to copper wire conductor pinch, make it distortion even fracture easily; When increasing the reinforcing element of pulling force silk or steel wire composition in the insulated wire cores, when pulling force silk or reinforcing element are occured bending and deformation, easily to the insulated wire cores outer jacket, screens etc. cause friction or extruding, because the location comparison of pulling force silk and reinforcing element is fixed, through after the long period, the outer jacket of insulated wire cores and screen will be damaged even be worn out, both of these case all can affect the normal operation of cable, interrupt transmission of electricity when serious, cause fault or the accidents such as short circuit breaking out of fire, the desired value that should produce effect and use this class Plastic-sheathed Cable when therefore failing to reach design, even under the impact of some force majeure that causes of some occasion or natural calamity, this type of old cable is also shorter than the general common Plastic-sheathed Cable life-span on the contrary.

The utility model content

The technical problems to be solved in the utility model provides the Plastic-sheathed Cable of a kind of high flexibility, high tensile ability, good bending property, long service life.

A kind of flexible high tensile Plastic-sheathed Cable described in the utility model, the gap in cable core is provided with filling, extrudes inner sheath outside cable core, and outermost layer extrudes oversheath; Described cable core is by some eradication edge cores and stranded the forming of strengthening core.

Described insulated wire cores is by conductor and is coated on successively conductor outer conductor shield, insulating barrier, insulation screen and combines.

Described strengthening core is to form by the multiply finer wire is stranded.

The beneficial effects of the utility model are:

1, the utility model is by arranging a strengthening core simultaneously stranded with insulated wire cores in cable core, not only can strengthen greatly tensile property and the bending property of cable, each section that makes cable conductor is in the face of pulling force radially and longitudinally the time, strengthening core can both replace cable conductor and core bearing tension, extruding force and expansionary force etc., and have more flexibility, can adapt to flexibly and resist cable rises owing to own wt causes on the two ends, middle sinking, or the mechanical tension of a certain position of cable when being subject to two ends and stretching, make the stretching resistance performance of cable higher, stronger.

2, the utility model is looked actual conditions and is added semiconductive shielding layer and high insulation to strengthening core; make cable when work; strengthening core can not affect or destroy the outer field semi-conductive layer of insulated wire cores and high insulation, protects it to bring into play due effect, keeps the normal operation of cable.

Description of drawings

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

Fig. 2 is lay configuration schematic diagram between the utility model core.

Embodiment:

As shown in Figure 1, a kind of flexible high tensile Plastic-sheathed Cable described in the utility model comprises cable core, and the gap in cable core is provided with fills 5, extrudes inner sheath 7 outside cable core, and outermost layer extrudes oversheath 8; Described cable core is by some eradication edge core 9(such as Fig. 2) and one by the stranded strengthening core that forms 6 stranded the forming of multiply finer wire; Described insulated wire cores 9(such as Fig. 2) be by conductor 1 and be coated on successively conductor 1 outer conductor shield 2, insulating barrier 3, insulation screen 4 and combine.

As shown in Figure 2, three eradication edge cores 9 and a strengthening core 6 are twisted into cable core.

Flexible high tensile Plastic-sheathed Cable described in the utility model, the construction of cable with use material substantially and general rubber cover identical, but carry out adding one by the stranded strengthening core that forms 6 of multiply finer wire in stranded at cable core, carry out integral body of stranded formation of while with insulated wire cores 9, and twisting pitch is little more a lot, less 3 to 5 times than original pitch approximately than general Plastic-sheathed Cable twisting pitch.The structure of strengthening core multiply finer wire is looked actual conditions and is added crowded insulating barrier, insulating layer material is consistent with insulating barrier 3 materials of insulated wire cores 9, for example insulated wire cores is outer is metallic shield, then need not squeeze insulating barrier, if the insulated wire cores skin is semiconductive shielding layer or high insulation, then to divide don't push semiconductive shielding layer and high insulation.The steel wire of strengthening core is generally zinc-coated wire, also can be ordinary steel wire, the actual operating position of television cable and requirement and decide.

The utility model provides a kind of flexible high tensile Plastic-sheathed Cable version and implementation method; the above only is preferred implementation method of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims (3)

1. a flexible high tensile Plastic-sheathed Cable comprises cable core, and the gap in cable core is provided with filling (5), extrudes inner sheath (7) outside cable core, and outermost layer extrudes oversheath (8); It is characterized in that: cable core is by some eradication edge cores (9) and stranded the forming of a strengthening core (6).

2. flexible high tensile Plastic-sheathed Cable according to claim 1 is characterized in that: described insulated wire cores (9) is by conductor (1) and is coated on successively conductor (1) outer conductor shield (2), insulating barrier (3), insulation screen (4) and combines.

3. flexible high tensile Plastic-sheathed Cable according to claim 1, it is characterized in that: described strengthening core (6) is to form by the multiply finer wire is stranded.

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