CN201984888U - Self-supporting landscape lamp cable - Google Patents

Abstract

The utility model discloses a self-supporting landscape lamp cable, which comprises a live wire core, a neutral wire core and a ground wire core; an inner lining layer and a sheath; the live wire core and the neutral wire core are twisted into a cable, and the inner lining layer The main cable core is formed by extruding on the outer surface of the live core and the neutral core; the grounding core is made of aluminum alloy and placed outside the main cable core; the sheath wraps the main cable core and the grounding core as a whole. The cable of the utility model changes the conductor material of the common cable ground core, and adopts the aluminum alloy ground core to provide mechanical tension for the cable, which not only saves the tension bearing components of the self-supporting cable, but also greatly reduces the manufacturing cost of the cable and reduces the The weight of the cable itself is reduced, so the cable of the utility model has a large span length and can carry more weight of landscape lights.

Description

Self-bearing type scape lamp cable

Technical field

The utility model relates to a kind of cable, particularly a kind of self-bearing type scape lamp cable of using for city scape lamp illuminalive power-supply.

Background technology

The important component part that city illumination scape lamp beautifies as city illumination and city square is popularized in each big city gradually and is come.Present most of scape lamp is suspended on the city square top by support, and the defective of this mode mainly contains 1, influenced the layout on square, and is bigger to beautifying the square influence; 2, urban land an inch of land is an inch of gold, and numerous scape lamp support pedestals has taken large stretch of city square land used, expense is very big.Therefore in order to make the illumination of scape lamp more can bring into play the effect of beautifying city, except beautify at the moulding of scape lamp and light try every possible means, also need to remove the support that the scape lamp hangs at city square.For addressing this problem, a lot of self-supporting cables have appearred, and this cable is when providing scape lamp mains lighting supply, can also bear scape lamp weight and cable own wt, and, to realize the length leap in order to satisfy city Grand Place requirement, also want to satisfy safe, economic requirement.

Scape lamp cable must have very big tensile strength, satisfies the ability of bearing cable self and scape lamp weight under length leap situation simultaneously.The power cable that bears pulling force at present mainly is based on wire armoring, and its structure is to twine many steel wires at cable stranding inner core external spiral shape, and it is steel wire that cable bears the pulling force place, and the stressed hard-pressed bale of steel wire plays the effect of tolerance pulling force around cable.But this structure, steel wire can change around the magnetic field of sealing under the electric field action that changes, and causes magnetic hysteresis and eddy current loss, has a strong impact on the current capacity of cable, general current capacity only is about 60% of a unarmored cable, and this steel wire armoured construction of cable is relatively heavier.Chinese patent literature CN1529320A disclosed " spiral skeleton self-bearing type multicore cable ", its structure is to be provided with insulated conductor in the cable jacket, the cable jacket center is provided with the spiral skeleton, spiral frame center is provided with strengthened rope, the strengthened rope of this cable is the stressed original paper of the tension force of this cable, and the original paper of transferring electric power is a conductor wire core on every side.Chinese patent literature CN201408600 disclosed a kind of " self-supporting lightning-proof power cable ", its structure be cable core by coating with the weight transmitting of cable self to the cable wire messenger wire of carrying tension force, messenger wire comprises the steel bar that is used to carry, the messenger wire overcoat that coats steel bar.Chinese patent literature CN201655420 disclosed a kind of " self-bearing type is maked somebody a mere figurehead the photoelectricity composite cable ", the load-bearing principle of this construction of cable is the same with aforementioned two patents, all be the weight of carrying cable by the cable wire messenger wire, realize and the original paper of transferring electric power must be provided with conductor wire core in addition.This structure all is that the own wt of cable conductor is played the function of self-supporting by steel strand wire as stressed original paper, and the function of transferring electric power still has the cable conduction cable core to realize, such complex structure, and function singleness, material cost is than higher.Chinese patent literature CN2353016 disclosed a kind of " self-supporting beaming type aerial insulated cable ", its structure is by three stranded forming of identical insulated wire cores; Insulated wire cores is made up of conductor, internal shield, insulating barrier, outer shielding layer, its conductor adopt built-in many stranded steel cores press duralumin or stranded the forming of hard copper strengthens weight capacity.This cable as the tension force original paper, provides mechanically stressed function and electric power transfer function with conductor wire core simultaneously.But there are two defectives in such structure, first, the conductor of transferring electric power is mainly copper, aluminum, and the steel wire original paper is set in the conductor, it is to form electrochemical corrosion that the metal of two kinds of unlike materials is in contact with one another, and influences the useful life of cable; The second, steel strand wire are the magnetic metal material, are arranged in the process of conductor intermediate conveyor electric power and can produce the electromagnetism perception, produce eddy-current heating, loss electric energy not only, and can make the current capacity of cable warming-up effect cable.

The utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, material cost is lower, use safer self-bearing type scape lamp cable.

The technical scheme that realizes the utility model purpose is a kind of self-bearing type scape lamp cable, comprises live wire core, zero line core and ground connection core; Also comprise inner covering and sheath; The outer surface that described live wire core and the stranded stranding of zero line core, inner covering are extruded in live wire core and zero line core forms the main body cable core; Described ground connection core is an aluminium alloy, is positioned over outside the main body cable core; Sheath coats main body cable core and ground connection core as a whole.

Described live wire core comprises live wire conductor and live wire insulating barrier; The zero line core comprises zero line conductor and zero line insulating barrier.

Described sheath is the semiconductive weatherable materials.

Aforementioned self-bearing type scape lamp cable also comprises the packed layer that is filled between inner covering and live wire core, the zero line core.

After having adopted technique scheme, the utlity model has following beneficial effect: (1) is from the power reguirements of scape lamp, provide the mains lighting supplies such as scape of stability and safety that live wire is arranged, three groups of cores of zero line and ground connection core are formed, the current capacity of the ground connection core of cable is generally half of master core current capacity, cable of the present utility model has changed the conductor material of common cable ground core, adopt the ground core of aluminium alloy to provide mechanical tension for cable, electric conductivity can satisfy fully, aluminium alloy is a nonmagnetic material, to the electric power transfer performance of cable without any influence; The tensile strength of aluminium alloy is compared with steel and is made no distinction of rank simultaneously, can satisfy the bearing capacity of cable deadweight and scape lamp weight fully.So not only saved the tension force carrying original paper of self-supporting cable, greatly reduce the manufacturing cost of cable, alleviated the weight of cable own, aluminium alloy is compared with the stressed original paper of steel wire, the proportion of aluminium alloy is 1/3rd of steel wire, and mechanical strength and steel wire rope are suitable, that is to say the own wt that further greatly reduces cable from the material proportion again, therefore cable spanning length of the present utility model is big, can carry more scape lamp weight.

When (2) the scape lamp being installed; the scape lamp directly is suspended on the stressed original paper of cable--on the ground connection core of aluminum alloy material; that is to say that scape lamp housing and ground wire are electrically connected; when the scape lamp housing leaks electricity or is subjected to being struck by lightning accident; the ground connection core electric energy safe of these being injured is transferred to the earth, protection scape lamp safe in utilization.

Therefore (3) cable jacket of the present utility model is the semiconductive weatherable materials, and is electrically connected with the ground connection core, and when being subjected to being struck by lightning accident, the ground connection core electric energy safe of these being injured is transferred to the earth, further protects the safe in utilization of scape lamp.

Description of drawings

Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below

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

Label is in the accompanying drawing:

Live wire core 1, live wire conductor 11, live wire insulating barrier 12, zero line core 2, zero line conductor 21, zero line insulating barrier 22, ground connection core 3, inner covering 4, sheath 5, packed layer 6.

Embodiment

(embodiment 1)

See Fig. 1, a kind of self-bearing type scape lamp cable of present embodiment comprises live wire core 1, zero line core 2, ground connection core 3, inner covering 4, sheath 5 and packed layer 6.

Live wire core 1 comprises live wire conductor 11 and live wire insulating barrier 12; Zero line core 2 comprises zero line conductor 21 and zero line insulating barrier 22.The outer surface that live wire core 1 and zero line core 2 stranded strandings, inner covering 4 are extruded in live wire core 1 and zero line core 2 forms the main body cable core, is filled with packed layer 6 between inner covering 4 and live wire core 1, the zero line core 2.Ground connection core 3 is positioned over outside the main body cable core for conductivity reaches the aluminium alloy that 54%IACS, tensile strength reach 330Mpa, and semiconductive weatherable materials sheath 5 coats main body cable core and ground connection core 3 as a whole.During use, the scape lamp directly is suspended on the ground connection core 3 of cable, the sheath 5 of main body cable core by the weather-proof polyolefin material of semiconductive with own wt be delivered to be stressed original paper be again on the ground connection core 3 of aluminium alloy of electric power transfer original paper.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (4)

1. A self-supporting landscape lamp cable, comprising a live wire core (1), a neutral wire core (2) and a ground wire core (3); it is characterized in that: it also includes an inner liner (4) and a sheath (5) ; The live wire core (1) and the neutral wire core (2) are twisted into a cable, and the inner liner (4) is extruded on the outer surface of the live wire core (1) and the neutral wire core (2) to form a main cable core; The grounding wire core (3) is aluminum alloy and placed outside the main cable core; the sheath (5) covers the main cable core and the grounding wire core (3) as a whole. 2. The self-supporting landscape light cable according to claim 1, characterized in that: the live wire core (1) includes a live wire conductor (11) and a live wire insulation layer (12); the neutral wire core (2) includes a neutral wire Conductor (21) and neutral wire insulating layer (22). 3. The self-supporting landscape light cable according to claim 1 or 2, characterized in that: the sheath (5) is a semi-conductive weather-resistant material. 4. The self-supporting landscape light cable according to claim 3, characterized in that: it also includes a filling layer (6) filled between the inner lining layer (4) and the live wire core (1) and the neutral wire core (2). ).

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