CN103325450A

CN103325450A - Pre-branched cable

Info

Publication number: CN103325450A
Application number: CN201310265931XA
Authority: CN
Inventors: 董建深; 魏瑞娜; 贺云芳; 刘永伟
Original assignee: WUXI NEW SUNSHINE CABLE CO Ltd
Current assignee: WUXI NEW SUNSHINE CABLE CO Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2013-09-25

Abstract

The invention discloses a pre-branched cable which comprises a main cable, a branch cable and a branch connector being connected with the main cable and the branch cable. The structure of the main cable is different from the structure of the branch cable, the main cable is composed of a main conductor, a first insulating layer, a wrapping band and a first protective sleeve layer, the first insulating layer, the wrapping band and the first protective sleeve layer cover the main conductor in sequence, the branch cable is composed of a branch cable conductor, a second insulating layer and a second outer protective sleeve, and the second insulating layer and the second outer protective sleeve cover the branch cable conductor in sequence in an extruding mode. A connector connecting the main conductor and the branch cable conductor is arranged in the branch connector, an isolating belt covers the connector position in an extruding mode after the pressing connection of the connector, and the connector is connected with the wrapping band of the main cable and the second insulating layer of the branch cable are connected together in a lap joint mode. The pre-branched cable has the advantages of being high in safety performance, good in insulation performance, good in electric performance, fire resistant, good in watertightness and easy and convenient to mount.

Description

A kind of pre-branched cable

Technical field

The present invention relates to the electric wire field, specifically refer to a kind of pre-branched cable.

Background technology

Along with taking place frequently of fire incident, people constantly deepen electric wire fire risk understanding, and relevant department is also more and more higher to performance demands such as electric wire fire protection flame retardings.Because having characteristics such as spread fast, the difficulty of putting out a fire to save life and property, produce secondary harm, recovery time is long, cable fire can bring tremendous loss to national economy and the people's lives and properties.Therefore people have proposed harsher service conditions to fire performance, the security reliability of electric wire.As fire prevention, explosion-proof, overload capacity is strong, long service life, under the fire condition, Fire lift, fire pump need keep the normal operation in the certain hour, cable is the low-smoke low-halogen low toxicity after burning, even specific (special) requirements such as smokeless Halogen is nontoxic.The cable fire-proof measure is to reduce the important means that ignition of cable prolongs combustion, crucial relying mainly on prevention, and all kinds of fire-resisting cables, fireproof cable are used widely.

Prior art all is that employing mode of wrapped mica tape on main cable conductor, branch cable conductor and branch's connector branch joint plays fire-resistant effect, the fire-resisting cable that mica tape is wrapped, the hardening of mica sintering can continue to play the effect of insulation during cable fire, thereby reach fire-resistant effect, but, no matter be that synthetic mica tape, phlogopite band, white clouds master tape or other mica tapes all have following major defect: (1) mica water absorption is strong, loses efficacy easily in the suction back; (2) processing method of mica tape is to utilize adhesive to paste mica powder, and is therefore harder, and in wrapped and subsequently processing and use, mica powder very easily peels off, and peels off the function of namely having lost insulation as long as exist, and does not reach instructions for use; Also be difficult for simultaneously wrapped smooth, even subsides, tight, wrinkling easily, particularly small bore flexible conductor difficulty of processing is bigger; (3) after meeting fire burns, after the organic material macromolecular material is burnt mistake, can cause the cable internal structure loosening, cause the fragmentation of mica insulation layer to come off, the effect of especially all kinds of vibrations, thereby the forfeiture insulation property, can't continue to remain on the function of supplying power in the flame, so its application is subjected to certain limitation.

Also there are other mineral insulation bands of use to substitute mica tape in the prior art, but no matter be which kind of fire-resistant band, wrapped band all is that employing is artificial manual wrapped on branch's connector branch joint, wrapped not tight, be easy to generate the bottom pour ladle phenomenon, particularly in injection moulding mold pressing materials process, and the flame retardant coating between the main cable, branch cable also is easy to generate disconnection, thereby do not have insulating effect when the cable breaking out of fire.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of raising security performance, insulation property, good electrical property, and fire resistance is good, and good waterproof performance is installed pre-branched cable simply and easily.

A kind of pre-branched cable of the present invention, comprise backbone cable, branch cable and be connected branch's connector of aforementioned two cables, the structure of backbone cable and branch cable is different, backbone cable is by leading body and be coated on leading body outer first insulating barrier, twining package tape, first restrictive coating successively and constitute, and branch cable is by the branch line conductor and be extruded in branch line conductor second insulating barrier, second oversheath outward successively and constitute; Be provided with the jointing that leading body and branch line conductor are linked together in branch's connector, extrude the isolation strip in the joint after the described jointing crimping, and overlap with the twining package tape of backbone cable, second insulating barrier of branch cable.

Further improve, described branch connector, jointing adopt the oblate copper connector of the annealing of high conduction performance.

Further improve, described leading body, branch line conductor adopt stranded the forming of multiply annealed copper line again.

Beneficial effect of the present invention is:

The present invention is because after the jointing crimping in branch's connector, along whole jointing outer surface wrapped one deck separation sleeve again, second insulating barrier of this separation sleeve and leader cable twining package tape, branch cable overlaps, so form the outer jacket of an integral body, improve insulation property, the security performance of branch cable greatly, also do not influenced the electrical property of branch cable simultaneously; Characteristics such as the present invention simultaneously has also that security performance height, fire resistance are good, good waterproof performance, installation are simple and convenient.

Description of drawings

Fig. 1 is structural representation of the present invention.

Embodiment:

As shown in Figure 1, a kind of pre-branched cable, comprise backbone cable 1, branch cable 2 and be connected branch's connector 3 of aforementioned two cables, backbone cable 1 is different with the structure of branch cable 2, and backbone cable 1 is by leading body 2 and be coated on leading body 4 outer first insulating barrier 5, twining package tape 6, first restrictive coatings 7 successively and constitute; Branch cable 2 is by branch line conductor 8 and be extruded in branch line conductor 8 outer second insulating barrier 9, second oversheaths 10 successively and constitute; Be provided with the jointing 11 that leading body 4 and branch line conductor 8 are linked together in branch's connector 3, extrude separation sleeve 12 after described jointing 11 crimping in the joint, and overlap with the twining package tape 6 of backbone cable 1, second insulating barrier 9 of branch cable.

Branch's connector 3 described above, jointing 11 adopt the oblate copper connector of annealing of high conduction performance; Described leading body 4, branch line conductor 8 adopt stranded the forming of multiply annealed copper line.

The object of the present invention is achieved like this: leader cable 1 and branch cable 2 link into an integrated entity by branch's connector 3, branch's connector 3 adopts the oblate copper connector of the annealing of high conduction performance, be interrupted closed peeling, crimping, have excellent waterproof, protection against the tide, anti-dust performance, avoided joint contact position copper core to expose the generation that produces oxidation and cause short circuit between contact resistance increase and cable core in air simultaneously, such arranging reduced the wiring error that the miner causes when the cable main line connects branch line.After the branch joint connection completes, produce and make with production equipment (annotating the rubber machine) and the various particular manufacturing craft of specialty, make the master, divide cable effectively to be bonded to an integral body, the security performance of cable is better, and the scope of application is wider.

The invention provides a kind of pre-branch version and implementation method; the above only is preferred implementation method of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims

1. pre-branched cable, comprise backbone cable (1), branch cable (2) and be connected branch's connector (3) of aforementioned two cables, it is characterized in that: backbone cable (1) is different with the structure of branch cable (2), backbone cable (1) is by leading body (4) and be coated on outer first insulating barrier (5) of leading body (4), twining package tape (6), first restrictive coating (7) formation successively, and branch cable (2) is by branch line conductor (8) and be extruded in outer second insulating barrier (9) of branch line conductor (8) successively, second oversheath (10) constitutes; Be provided with the jointing (11) that leading body (4) and branch line conductor (8) are linked together in branch's connector (3), extrude separation sleeve (12) after described jointing (11) crimping in the joint, and overlap with the twining package tape (6) of backbone cable (1), second insulating barrier (9) of branch cable.

2. pre-branched cable according to claim 1 is characterized in that: the oblate copper connector of annealing of described branch connector (3), jointing (11) employing high conduction performance.

3. pre-branched cable according to claim 1 is characterized in that: described leading body (4), stranded the forming of branch line conductor (8) employing multiply annealed copper wire.