CN203909367U

CN203909367U - Optical cable used for cell wiring

Info

Publication number: CN203909367U
Application number: CN201420346100.5U
Authority: CN
Inventors: 陆志祥; 俞兴明; 孙根明; 丁伟江
Original assignee: Wujiang communication cable factory
Current assignee: Wujiang communication cable factory
Priority date: 2014-06-26
Filing date: 2014-06-26
Publication date: 2014-10-29
Anticipated expiration: 2024-06-26

Abstract

The utility model discloses an optical cable used for cell wiring, and relates to the optical cable field, so as to solve the problems that the line is not simple, the operation is complicated and the surrounding environment beauty is influenced as the optical cable needs to be wholly cut off to be connected with a plurality of rubber-insulated optical cables to the home when a building is high or rural households are dispersed. The optical cable used for cell wiring is composed of a cable core and a sheath, wherein the cable core is composed of a whole-spectrum tight-coated fiber beam and an aramid fiber layer; the cable core is sleeved with the sheath; the cable core is in positive and negative clockwise twisting; the excess length of the tight-coated fiber in the cable core in relative to the sheath is 0.28% to 0.32%; and the sheath is composed of an inner-layer plastic plating aluminum foil longitudinal cladding layer, an outer-layer medium-density polyethylene layer and a steel reinforcement piece. The steel reinforcement piece of the optical cable projects against the surface of the sheath and is covered with the medium-density polyethylene layer to form a convex edge, the steel reinforcement piece can be conveniently dug out by the construction person and can be prevented from being dug broken, a groove is left on the sheath, the optical fiber can be taken out to be directly to the home when the sheath is peeled, the line is simple and the surrounding environment beauty is not influenced.

Description

Optical cable for community distribution

Technical field

The utility model relates to optical cable field, particularly relates to the optical cable for community distribution.

Background technology

During FTTH wiring now, backbone optical cable or one-level optical distribution cable arrive behind building or rural villages, after access point (Node), backbone optical cable or whole of optical distribution cable must be blocked, then wherein each core fibre connects covered wire cable (butterfly optical cable) again and moves user's family at Node place, and when building is higher or rural villages resident family relatively disperses, covered wire cable used will be many, and circuit is wordy, when making complicated operation, also affect the attractive in appearance of surrounding enviroment.

Utility model content

For solving the problems of the technologies described above, the utility model provides the optical cable for community distribution.

The utility model solves the technical scheme that its technical matters adopts: for the optical cable of community distribution, it is comprised of cable core and sheath; Wherein, described cable core consists of some whole chromatogram tight tube fiber bundles, aramid fiber layers, the center of some described whole chromatogram tight tube fiber bundles in cable core is cylindric, the periphery of the cylindrical-shaped structure that the some whole chromatogram tight tube fiber bundles that described aramid fiber layer is distributed in closely form; It is stranded that described cable core is positive inhour, and in cable core, whole chromatogram tight tube fiber bundle is 2.8 ‰～3.2 ‰ with respect to the remaining length of sheath; Described sheath is moulded the vertical covering of aluminium foil, outer medium density polyethylene layer and two steel wire reinforcements by internal layer plating and is formed; The thickness that the vertical covering of aluminium foil is moulded in described internal layer plating is 0.12 ± 0.02mm, and described outer medium density polyethylene layer is 1.6～3.0mm; At two steel wire reinforcements of the parallel placement in the symmetrical both sides of sheath, and protrude outer medium density polyethylene layer surface and cover one deck medium density polyethylene formation fin, the diameter of described steel wire reinforcement is 1.0～1.5mm, the arc length degree of the steel wire reinforcement of described protrusion outside outer medium density polyethylene layer be steel wire reinforcement circumference total length 28%～32%.

Wherein, it is stranded that described cable core is positive inhour, and the conventional term SZ of this technical field is stranded.

In described cable core, whole chromatogram tight tube fiber bundle is 3 ‰ with respect to the remaining length of sheath.

The arc length degree of the steel wire reinforcement of described protrusion outside outer medium density polyethylene layer be steel wire reinforcement circumference total length 30%.

Principle of work: when adopting this optical cable construction, workmen determines the position of steel wire reinforcement at the fin of the steel wire reinforcement of outer medium density polyethylene layer outside surface from protrusion, dig out and do not dig disconnected steel wire reinforcement, then, the groove strip off sheath staying from digging out steel wire, draws out required optical fiber direct access family, the inside.

The beneficial effects of the utility model: the inside of the optical cable for community distribution of the present utility model adopts some whole chromatogram tight tube fiber bundles to be dispersed in cable core, then, at the parallel steel wire reinforcement that is embedded in the both sides of sheath symmetry, and protrude jacket surface and cover one deck medium density polyethylene formation fin, convenient construction personnel dig out steel wire reinforcement, at restrictive coating, leave groove, convenient " drawing fibre " operation, draw out desired fiber entering household and needn't block other optical fiber, make other optical fiber continue to move towards other user in this optical cable, make the simple in circuits in Li Huo village, building, when having simplified operation steps, also do not affect the attractive in appearance of surrounding enviroment.

Accompanying drawing explanation

Fig. 1 is the inner structure schematic diagram of embodiment;

Fig. 2 is the local enlarged diagram of embodiment;

Wherein, 1-whole chromatogram tight tube fiber bundle, 2-aramid fiber layer, the vertical covering of aluminium foil, 4-medium density polyethylene layer, 5-steel wire reinforcement, 6-fin are moulded in 3-plating.

Embodiment

In order to deepen, to understanding of the present utility model, below in conjunction with drawings and Examples, the utility model to be described in further detail, this embodiment, only for explaining the utility model, does not form and limits protection domain of the present utility model.

Embodiment

As depicted in figs. 1 and 2, for the optical cable of community distribution, it is comprised of cable core and sheath; Wherein, cable core consists of some whole chromatogram tight tube fiber bundles 1, aramid fiber layers 2, the center that some described whole chromatogram tight tube fiber bundles 1 are in cable core is cylindric, the periphery of the cylindrical-shaped structure that the some whole chromatogram tight tube fiber bundles 1 that described aramid fiber layer 2 is distributed in closely form; It is stranded that described cable core is positive inhour (being SZ), and in cable core, whole chromatogram tight tube fiber bundle is 3 ‰ with respect to the remaining length of sheath; Described sheath is moulded the vertical covering 3 of aluminium foil, outer medium density polyethylene layer 4 and two steel wire reinforcements 5 by internal layer plating and is formed; The thickness that the vertical covering 3 of aluminium foil is moulded in described internal layer plating is 0.12mm, and described outer medium density polyethylene layer 4 is 2mm; At two steel wire reinforcements 5 of the parallel placement in the symmetrical both sides of sheath, and protrude outer medium density polyethylene layer 4 surface and cover one deck medium density polyethylene formation fin 6, the diameter of described steel wire reinforcement 5 is 1.5mm, the arc length degree of the steel wire reinforcement 5 of described protrusion outside outer medium density polyethylene layer 4 be steel wire reinforcement 5 circumference total length 30%.

The principle of work of the present embodiment: when adopting this optical cable construction, workmen determines the position of steel wire reinforcement 5 from protruding the fin 6 of the steel wire reinforcement 5 outer medium density polyethylene layer 4, dig out and do not dig disconnected steel wire reinforcement 5, then, the groove strip off sheath staying from digging out steel wire, draws out the required whole chromatogram tight tube fiber bundle 1 in the inside and directly registers one's residence.

The inside of the optical cable for community distribution of the present embodiment adopts some whole chromatogram tight tube fiber bundles 1 in cable core, then, lateral surface at sheath is embedded steel wire reinforcement 5, and protrude outer medium density polyethylene layer 4 surface and cover one deck medium density polyethylene formation fin 6, convenient construction personnel dig out and do not dig disconnected steel wire reinforcement 5, at sheath, leave groove, facilitate strip off sheath to carry out " drawing fibre " operation, draw out desired fiber entering household and needn't block other optical fiber, make other optical fiber continue to move towards other user in this optical cable, make the simple in circuits in Li Huo village, building, when having simplified operation steps, also do not affect the attractive in appearance of surrounding enviroment.

Above-described embodiment should not limit the utility model by any way, and all employings are equal to replaces or technical scheme that the mode of equivalence conversion obtains all drops in protection domain of the present utility model.

Claims

1. for the optical cable of community distribution, it is comprised of cable core and sheath; It is characterized in that: described cable core consists of some whole chromatogram tight tube fiber bundles (1), aramid fiber layer (2), the center of described some whole chromatogram tight tube fiber bundles (1) in cable core is cylindric, the periphery of the cylindrical-shaped structure that the some whole chromatogram tight tube fiber bundles (1) that described aramid fiber layer (2) is distributed in closely form; It is stranded that described cable core is positive inhour, and in cable core, whole chromatogram tight tube fiber bundle (1) is 2.8 ‰～3.2 ‰ with respect to the remaining length of sheath; Described sheath is moulded the vertical covering (3) of aluminium foil, outer medium density polyethylene layer (4) and two steel wire reinforcements (5) by internal layer plating and is formed; The thickness that the vertical covering (3) of aluminium foil is moulded in described internal layer plating is 0.12 ± 0.02mm, and described outer medium density polyethylene layer (4) is 1.6～3.0mm; Symmetrical both sides two steel wire reinforcements of parallel placement (5) at sheath, and protrude outer medium density polyethylene layer (4) surface and cover one deck medium density polyethylene formation fin (6), the diameter of described steel wire reinforcement (5) is 1.0～1.5mm, the arc length degree of the steel wire reinforcement (5) of described protrusion outside outer medium density polyethylene layer (4) be steel wire reinforcement (5) circumference total length 28%～32%.

2. the optical cable for community distribution according to claim 1, is characterized in that: in described cable core, whole chromatogram tight tube fiber bundle (1) is 3 ‰ with respect to the remaining length of sheath.

3. the optical cable for community distribution according to claim 1, is characterized in that: the arc length degree of the steel wire reinforcement (5) of described protrusion outside outer medium density polyethylene layer (4) be steel wire reinforcement (5) circumference total length 30%.