CN101950606A

CN101950606A - Tensile cable

Info

Publication number: CN101950606A
Application number: CN 201010297686
Authority: CN
Inventors: 钱俊; 张兴飞; 刘捷; 孔令蜜; 王达伟
Original assignee: Zhongli Technology Group Co Ltd
Current assignee: Zhongli Technology Group Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2011-01-19

Abstract

The invention discloses a tensile cable, which belongs to the technical field of electric wires and cables. The tensile cable comprises a cable core formed by a group of conductors and an outer sheath extrusion-clad on the cable core, wherein each conductor is composed of a plurality of conductive single wires twisted with each other and an insulating protection layer extrusion-clad outside the conductive single wire. The tensile cable is characterized in that: the conductor also comprises enhancing fiber yarns which are mixed in the conductive single wires and twisted with the conductive single wires. In the technical scheme, the enhancing fiber yarns are mixed in the conductive single wires and twisted with the conductive single wires so as to ideally improve the tensile strength; moreover, as the conductive single wire needs to be twisted, additional process is not required for the doping twisting of the enhancing fiber yarns and therefore the process links are reduced compared with the existing technology.

Description

The tension cable

Technical field

The invention belongs to technical field of electric wires and cables, be specifically related to a kind of tension cable.

Background technology

In Chinese patent literature, be no lack of around the technical scheme of the tensile strength that strengthens cable, as: the high strength tension cable that the self-adhesion tension cable that CN201408573Y recommends, the tension cable that CN2906848Y provides and CN201219038Y disclose, or the like.A kind of fire-retardant aramid fiber silk fabrics of the light environment protection cable that discloses with the outdoor data 5 class flexible cables and the Granted publication CN201430011Y of aramid fiber reinforced layer that has that the cable of outstanding tensile strength such as publication No. CN101834031A announce, this two patented technology schemes all are to embody the tensile strength of cable with the aramid fiber braid of setting up separately, more particularly ensure the tensile strength of cable in a concentrated manner, but this mode is easy to generate the situation of injuring all, in case, just make whole cable lose the tension effect because the aramid fiber braid causes damage or the part causes damage.

Perhaps for the above reasons, the structure of common tension cable is by shown in Figure 2 in the prior art, comprise the cable core 1 that constitutes by plurality of conductors 11 and squeeze the oversheath 2 that overlays on outside the cable core 1 and the one group of steel wire 21 that is positioned at oversheath 2 with interval arrangement states ground, the tension cable of this structure has good tension effect, but the same shortcoming that exists, that is exactly: the weak effect that combines of steel wire and oversheath, even the steel wire situation of moving about appears, this is because Production for Steel Wire manufacturer gets rusty and in production link Steel Wire Surface is coated with grease for fear of steel wire.Therefore the tension cable of this structure is not subjected to thinking highly of of applying unit.

At above-mentioned prior art, the applicant explores, and finds a way to resolve the problem, and technical scheme described below produces under this background.

Summary of the invention

Task of the present invention be to provide a kind of need not to use in the mode of independent increase aramid fiber braid both embody simplified structure and reduce process procedure and do the tension cable that draws intensity with guarantee again.

Task of the present invention is finished like this, a kind of tension cable, comprise the cable core that constitutes by one group of conductor and squeeze the oversheath that overlays on cable core, each conductor is made of many stranded each other conductive monofilaments and the crowded outer insulation sheath of conductive monofilament that overlays on, be characterised in that: described conductor also includes the fortifying fibre silk, and the fortifying fibre silk is mixed between the conductive monofilament and with conductive monofilament and twists together each other.

Fortifying fibre silk of the present invention is an aramid fiber.

The material of insulation sheath of the present invention is low-smoke halogen-free polyolefin or polyvinyl chloride.

Low-smoke halogen-free polyolefin of the present invention is low smoke and zero halogen cross-linked polyolefin or low smoke and zero halogen non-crosslinked polyolefin.

Oversheath of the present invention is low-smoke halogen-free polyolefin or polyvinyl chloride.

Technical scheme provided by the invention is owing to be mixed in the fortifying fibre silk in the conductive monofilament and to participate in conductive monofilament stranded, thereby can improve tensile strength ideally; Because it is stranded that conductive monofilament itself needs, stranded needs of therefore the fortifying fibre silk being mixed additionally increases processing step, thereby helps to reduce process procedure for prior art.

Description of drawings

Fig. 1 is the schematic cross-section of tension cable of the present invention.

Fig. 2 is the schematic cross-section of the tension cable in the prior art.

Embodiment

Ask for an interview Fig. 1, provided the cable core 1 with seven conductors, 11 formations, each conductor 11 comprises the conductive monofilament of being filled the post of by some copper conductors or tin-coated copper lead 111 and squeezes the insulation sheath 112 that overlays on outside the conductive monofilament 111.As technical essential of the present invention, conductor 11 also includes the fortifying fibre silk of being filled the post of by aramid fiber 113, and fortifying fibre silk 113 participates in when stranded stranded with conductive monofilament 111, thereby forms the conductor 11 with excellent tensile strength.Aforesaid insulation sheath 112 preferred use low smoke and zero halogen cross-linked polyolefins use low smoke and zero halogen non-crosslinked polyolefin but do not repel, and can use rubber composition to fill the post of insulation sheath 112 or use polyvinyl chloride in addition.

The quantity of the conductor 11 of aforesaid formation cable core 1 is not subjected to illustrating quantity (seven s') restriction, as required and changeable, squeezes outside cable core 1 and covers outer jacket 2, and the material of outer jacket 2 is as the description to insulation sheath 112.

Can show self the tensile strength that ensures each conductor 11 by the resulting tension cable of the foregoing description with respect to the tension cable in the prior art, can embody the tensile strength of the integral body of cable core 1 again, therefore can yet be regarded as is a ultimate attainment technical scheme.

Claims

1. tension cable, comprise the cable core (1) that constitutes by one group of conductor (11) and squeeze the oversheath (2) that overlays on cable core (1), each conductor (11) is made of many stranded each other conductive monofilaments (111) and the crowded outer insulation sheath (112) of conductive monofilament (111) that overlays on, it is characterized in that: described conductor (11) also includes fortifying fibre silk (113), and fortifying fibre silk (113) is mixed between the conductive monofilament (111) and with conductive monofilament (111) and twists together each other.

2. tension cable according to claim 1 is characterized in that described fortifying fibre silk (113) is an aramid fiber.

3. tension cable according to claim 1, the material that it is characterized in that described insulation sheath (112) is low-smoke halogen-free polyolefin or polyvinyl chloride.

4. tension cable according to claim 3 is characterized in that described low-smoke halogen-free polyolefin is low smoke and zero halogen cross-linked polyolefin or low smoke and zero halogen non-crosslinked polyolefin.

5. tension cable according to claim 1 is characterized in that described oversheath (2) is low-smoke halogen-free polyolefin or polyvinyl chloride.

6. tension cable according to claim 5 is characterized in that described low-smoke halogen-free polyolefin is low smoke and zero halogen cross-linked polyolefin or low smoke and zero halogen non-crosslinked polyolefin.