A kind of light splitting is without jump optical cable distribution box
Technical field
The utility model relates to distributing box of communication optical cable, relates in particular to a kind of light splitting without jump optical cable distribution box.
Background technology
Fiber cable cross connection box is that Fiber to the home at FTTH(Fiber To The Home) build in widely used a kind of ODN(Optical Distribution Node, Optical Distribution Node) network wiring equipment.Fiber cable cross connection box, as user side distribution plant, has very important effect in optic communication links, and the quality of its quality directly affects the quality of whole piece lightguide cable link, and and then has influence on the quality of consumer wideband network speed.Wherein, the design features such as layout of fiber cable cross connection box inside are the main aspects of its quality.
Fig. 1 is that the light splitting generally used in prior art is without the interior layout schematic diagram of jump optical cable distribution box.As shown in Figure 1, existing light splitting is optical splitter 11 without the left side of jump optical cable distribution box, middle for being provided with trunk tail optical fiber 121 in tail optical fiber directorial area 12(Gai district and joining cable tail optical fiber 122), right upper portion is backbone optical cable district 13, lower right side is to join 14(backbone optical cable district, cable unit 13 and join in cable unit 14, to have multiple row fusion joining disk side by side), in the bottom of whole fiber cable cross connection box, be provided with optical cable and introduce ground connection fixed cell 15.
Enter the metal strengthening core and the optical cable introducing ground connection fixed cell 15 that after cable 16 strippings, expose and be fastenedly connected, make into cable metalwork good earth, avoid thunderbolt.Afterwards by the protective casing stripping certain length of optical fiber, make backbone optical cable in naked fibre and the row fusion joining disk welding in backbone optical cable district 13, and make joining cable and joining the row fusion joining disk welding in cable unit in naked fibre.Another row fusion joining disk welding in the trunk tail optical fiber 121Yu backbone optical cable district 13 that optical splitter 11 carries, what it carried joins cable tail optical fiber 122 and joins another row fusion joining disk welding in cable unit 14.Finally, recycling tail optical fiber (not shown) is carried out jumper connection by the row fusion joining disk in backbone optical cable district 13 with another row fusion joining disk that is connected trunk tail optical fiber 121, and utilizes tail optical fiber (not shown) to join a row fusion joining disk in cable unit 14 and to be connected another row fusion joining disk of joining cable tail optical fiber 122 and to carry out jumper connection.
From above-mentioned layout, the whole transmission route in fiber cable cross connection box needs a large amount of join cable fusion joining disk and be connected two row the tail optical fiber (not shown) of joining cable fusion joining disk and a large amount of welding work of needs.This causes, and materials cost is high, welding job costs are high, loss is large, particularly to optical distribution cable, becomes end management inconvenient.
Utility model content
In view of this, the utility model provides a kind of light splitting without jump optical cable distribution box, to reduce materials cost and welding job costs, and the convenient management to optical distribution cable Cheng Duan.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of light splitting optical cable transfer box, comprise casing, in described casing, be provided with spectrophotometric unit, and the backbone optical cable unit being connected with described spectrophotometric unit and optical distribution cable unit, described spectrophotometric unit comprises optical splitter, the adapter being connected with the tail optical fiber carrying with optical splitter, the port number of described adapter is identical with the number of users that described cross-connecting box can access, optical distribution cable in described optical distribution cable unit is connected to the port of described adapter correspondingly, backbone optical cable in described backbone optical cable unit is connected to described optical splitter by tail optical fiber.
A plurality of plate fiber columns between described optical splitter and described adapter with parallel arranged, to facilitate the tail optical fiber that optical splitter is carried to manage and safeguard.
On interior layout in the utility model light splitting without jump optical cable distribution box, described backbone optical cable unit and optical distribution cable unit divide the both sides that are positioned at described spectrophotometric unit, and described backbone optical cable unit is positioned at the outside that the outside of described optical splitter, described optical distribution cable unit are positioned at described adapter, the cabling that can make like this backbone optical cable and optical distribution cable is clear and rational more.
In addition, described optical distribution cable unit has a plurality of rubber-insulated wire fixed legs of parallel arranged, because optical distribution cable (conventionally using the covered wire cable of 2 cores) quantity is more, therefore adjacent a plurality of optical distribution cables can be wrapped on corresponding rubber-insulated wire fixed leg to convenient administering and maintaining optical distribution cable.
Described backbone optical cable unit has at least a set of main push-towing rope fusion joining disk, and the backbone optical cable in described backbone optical cable unit is connected to described main push-towing rope fusion joining disk, and described main push-towing rope fusion joining disk is connected to described optical splitter by tail optical fiber again.Different from a fairly large number of situation of optical distribution cable is, for the optical splitter of point-to-multipoint, the quantity of backbone optical cable (conventionally using the ordinary optical cable of 12 cores or 24 cores) is relatively less, while therefore adopting main push-towing rope fusion joining disk to be connected backbone optical cable and optical splitter with tail optical fiber, do not need to use a large amount of fusion joining disks and tail optical fiber, do not need a large amount of welding work yet.
For making cabling in described cross-connecting box clear and rational more, backbone optical cable in described backbone optical cable unit is separated with optical distribution cable in described optical distribution cable unit and enter independently described cross-connecting box, and backbone optical cable and optical distribution cable can't be mixed in together.
Particularly, described backbone optical cable enters described cross-connecting box by position corresponding to described backbone optical cable unit, afterwards, main push-towing rope fusion joining disk welding in lower cable in backbone optical cable and described backbone optical cable unit, moves on after the straight molten unit welding in the straight-through optical cable in backbone optical cable and described cross-connecting box.
On the other hand, described optical distribution cable enters described cross-connecting box by position corresponding to described optical distribution cable unit, afterwards, and directly with described adapter port welding.
The beneficial effect of technique scheme of the present utility model is as follows:
The cross-connecting box that the utility model provides utilizes the optical splitter in spectrophotometric unit that light signal link is coupled and is reallocated afterwards, has removed the jumper connection between backbone optical cable unit and optical distribution cable unit from.Moreover, adapter in spectrophotometric unit has the identical port of number of users that can access with cross-connecting box, and optical distribution cable is connected to the port of described adapter correspondingly, optical distribution cable does not need to be first welded to and joins cable fusion joining disk like this, and then be connected to spectrophotometric unit after realizing jumper connection with the tail optical fiber of joining the welding of cable fusion joining disk, therefore saved a large amount of uses of joining cable fusion joining disk and tail optical fiber, omitted a large amount of welding work, and connected mode has facilitated the management to optical distribution cable Cheng Duan one to one.Therefore the cross-connecting box that the utility model provides has reduced materials cost and welding job costs, and has facilitated the management to optical distribution cable Cheng Duan.
Accompanying drawing explanation
Fig. 1 is that the light splitting generally used in prior art is without the interior layout schematic diagram of jump optical cable distribution box;
Fig. 2 is that the utility model embodiment light splitting is without the interior layout schematic diagram of jumper connection cross-connecting box.
Reference numeral:
11-optical splitter, 12-tail optical fiber directorial area, 121-trunk tail optical fiber, 122-join cable tail optical fiber, 13-backbone optical cable district, 14-and join that ground connection fixed cell is introduced in cable unit, 15-optical cable, 16-enters cable;
The tail optical fiber that 21-casing, 22-spectrophotometric unit, 221-optical splitter, 222-optical splitter carry, 223-adapter, 224-plate fiber column, 23-backbone optical cable unit, 231-main push-towing rope fusion joining disk, 232-tail optical fiber, 24-optical distribution cable unit, 241-rubber-insulated wire fixed leg, 25-backbone optical cable, 26-optical distribution cable, 27-be molten unit directly.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
As shown in Figure 2, the light splitting optical cable transfer box that the utility model embodiment provides comprises casing 21, in casing 21, be provided with spectrophotometric unit 22, and the backbone optical cable unit 23 being connected with spectrophotometric unit 22 and optical distribution cable unit 24, spectrophotometric unit 22 comprises optical splitter 221, the adapter 223 being connected with the tail optical fiber 222 carrying with optical splitter, the port number of adapter 223 is identical with the number of users that described cross-connecting box can access, and the optical distribution cable in optical distribution cable unit 24 26 is connected to the port of adapter 223 correspondingly, backbone optical cable 25 in backbone optical cable unit 23 is connected to optical splitter 221 by tail optical fiber 232.
The cross-connecting box that the utility model provides utilizes the optical splitter 221 in spectrophotometric unit 22 that light signal link is coupled and is reallocated afterwards, has removed the jumper connection between backbone optical cable unit 23 and optical distribution cable unit 24 from.Moreover, adapter 223 in spectrophotometric unit 22 has the identical port of number of users that can access with cross-connecting box, and the optical distribution cable in optical distribution cable unit 24 26 is connected to the port of adapter 223 correspondingly, optical distribution cable 26 does not need to be first welded to and joins cable fusion joining disk like this, and then be connected to spectrophotometric unit 22 after realizing jumper connection with the tail optical fiber of joining the welding of cable fusion joining disk, therefore saved a large amount of uses of joining cable fusion joining disk and tail optical fiber, omitted a large amount of welding work, and connected mode has facilitated the management to optical distribution cable Cheng Duan one to one.Therefore the cross-connecting box that the utility model provides has reduced materials cost and welding job costs, and has facilitated the management to optical distribution cable Cheng Duan.
Optical splitter in above-described embodiment 221 adopts point-to-multipoints (as 1:16) to carry out route Cheng Duan, and 1 backbone optical cable 25 is connected in 16 or 32 root user optical cables by spectrophotometric unit district, and Shi16 Hu Huo32Hu family realizes networking.In prior art, conventionally can realize with 4 cover backbone optical cable integrated modules and 24 cover optical distribution cable integrated modules the route Cheng Duan of point-to-multipoint.Wherein, every cover backbone optical cable integrated module can comprise 12 main push-towing rope fusion joining disks and the tail optical fiber of welding with it, forms 48 cores (leaving surplus capacity, is not that every core all connects optical distribution cable, and the point-to-multipoint road that can meet 1:16 has); Every cover optical distribution cable integrated module can comprise 12 and join cable fusion joining disk and the tail optical fiber of welding with it, forms 288 cores.And in above-described embodiment of the present utility model, can use 2 cover backbone optical cable integrated modules, every cover comprises 24 main push-towing rope fusion joining disks and the tail optical fiber of welding with it; And omit the use to 24 cover optical distribution cable integrated modules, make each core in optical distribution cable all directly become end with the corresponding port of adapter 223, thereby realize 288 cores.
In the above-described embodiments, adapter 223 also can be called the one-tenth end of spectrophotometric unit 22, represents that optical distribution cable 26 becomes end at adapter 223 places.In use, backbone optical cable can be used the ordinary optical cable of 24 cores, and optical distribution cable is used the covered wire cable of 2 cores conventionally.
As shown in Figure 2, have a plurality of plate fiber columns 224 of parallel arranged between optical splitter 221 and adapter 223, be vertical upper and lower mode parallel arranged under the state of Fig. 2.The tail optical fiber 222 that optical splitter carries connects optical splitter 221 and adapter 223, adjacent tail optical fiber 222 can be wrapped on same plate fiber column 224, tail optical fiber 222 is divided into groups, avoid all tail optical fibers 222 to mix, to facilitate the tail optical fiber 222 that optical splitter is carried to manage and safeguard.
On interior layout in above-described embodiment light splitting without jump optical cable distribution box, backbone optical cable unit 23 and optical distribution cable unit are positioned at the both sides of spectrophotometric unit 22 for 24 minutes, and backbone optical cable unit 23 is arranged in the outside (being the left side of Fig. 2 optical splitter 221) of optical splitter 221, optical distribution cable unit 24 is arranged in the outside (being the right side of Fig. 2 adapter 223) of adapter 223, so first, guarantee can to realize in the inside of described cross-connecting box the separated of backbone optical cable and optical distribution cable, avoid the two mixing in cross-connecting box inside, thereby the cabling that makes backbone optical cable and optical distribution cable is clear and rational more.
In addition, optical distribution cable unit 24 has a plurality of rubber-insulated wire fixed legs 241 of parallel arranged, is vertical upper and lower mode parallel arranged under the state of Fig. 2.Because optical distribution cable 26 is used the covered wire cable of 2 cores conventionally, quantity is more, for example for the light splitting of 288 cores without for jump optical cable distribution box, may use 288 covered wire cables (only using a core of covered wire cable).Therefore, adjacent a plurality of optical distribution cables 26 can be wrapped on corresponding rubber-insulated wire fixed leg 241 and carry out colligation, optical distribution cable 26 is divided into groups, avoid all optical distribution cables all to mix and be hard to tell Chu, convenient administering and maintaining optical distribution cable.
In the above-described embodiments, backbone optical cable unit 23 has at least a set of main push-towing rope fusion joining disk, be illustrated in figure 2 and have 2 cover main push-towing rope fusion joining disks 231, the backbone optical cable 25 in backbone optical cable unit 23 is connected to main push-towing rope fusion joining disk 231, and main push-towing rope fusion joining disk 231 is connected to optical splitter 221 by tail optical fiber 232 again.Different from a fairly large number of situation of optical distribution cable 26 is, for the optical splitter 221 of point-to-multipoint, the common ordinary optical cable that uses 12 cores or 24 cores of backbone optical cable 25() quantity is relatively less, while therefore adopting main push-towing rope fusion joining disk 231 to be connected backbone optical cable 25 and optical splitter 221 with tail optical fiber 232, do not need to use a large amount of fusion joining disks and tail optical fiber, do not need a large amount of welding work yet.
By Fig. 2, can clearly be found out, the backbone optical cable 25 in backbone optical cable unit 23 is separated with optical distribution cable 26 in optical distribution cable unit 24 and enter independently described cross-connecting box.That is to say, even in the outside of cross-connecting box, backbone optical cable 25 and optical distribution cable 26 can be not mixed in together yet, this from prior art, backbone optical cable and optical distribution cable are mixed to form a mode of entering cable different.This backbone optical cable 25 and the optical distribution cable 26 of making independently enters respectively the mode of cross-connecting box, makes cabling in described cross-connecting box clear and rational more.
Particularly, when backbone optical cable 25 and optical distribution cable 26 independently enter cross-connecting box respectively, backbone optical cable 25 enters cross-connecting box by the position of backbone optical cable unit 23 correspondences.Afterwards, backbone optical cable 25 is divided into lower cable and straight-through optical cable two parts.Lower cable will access the backbone optical cable of this cross-connecting box, and straight-through optical cable is by advancing to the backbone optical cable of the cross-connecting box of next community after this cross-connecting box.In this cross-connecting box, main push-towing rope fusion joining disk 231 weldings in lower cable and backbone optical cable unit 23, move on after straight molten unit 27 weldings in straight-through optical cable and described cross-connecting box.
On the other hand, optical distribution cable 26 enters described cross-connecting box by the position of optical distribution cable unit 24 correspondences, afterwards, directly with the port welding of adapter 223, and without through joining cable fusion joining disk and with the tail optical fiber of joining the welding of cable fusion joining disk.
Light splitting in above-described embodiment can be boxlike cross-connecting box without jump optical cable distribution box, to facilitate the wall hanging of cross-connecting box or fixing of other modes.
Below by the basis of the cross-connecting box structure disclosing in the various embodiments described above, introduce backbone optical cable in cross-connecting box and be how to access and optical distribution cable how to pick out.
Specifically as shown in Figure 2, the cable hole of entering the fixed head of backbone optical cable 25 on the left of being positioned at cross-connecting box enters casing 21 inside; By backbone optical cable 25 strippings, the metalwork exposing after stripping is firmly connected with the protective ground unit in casing 21 afterwards, and optical fiber by naked fine protective casing protection cabling to main push-towing rope fusion joining disk 231 and straight molten unit 27; Lower cable and 231 weldings of main push-towing rope fusion joining disk, main push-towing rope fusion joining disk 231 is connected to optical splitter 221 by tail optical fiber 232, after straight-through optical cable and straight molten unit 27 weldings, moves on.
Optical distribution cable 26 enters casing 21 inside from the cable hole of entering being positioned at the fixed head on cross-connecting box right side; Afterwards by optical distribution cable 26 strippings; the metalwork exposing after stripping is firmly connected with the protective ground unit in casing 21; light carries out, after fiber storage management (being grouping mentioned above), being connected into end correspondingly with the port of adapter 223 via rubber-insulated wire fixed leg 241.
As known from the above, boxlike light splitting is connected to the optical splitter 221 of spectrophotometric unit 22 without the backbone optical cable 25 of jump optical cable distribution box via backbone optical cable unit 23, the tail optical fiber 222 that optical splitter 221 carries by it is connected to adapter 223, after 26 one-tenth ends of adapter 223 and optical distribution cable, form and be connected with optical distribution cable 26, thereby realized the access of backbone optical cable 25 and picking out of optical distribution cable 26.
The said structure design of cross-connecting box has reduced materials cost and welding job costs, has facilitated the management to optical distribution cable Cheng Duan.And the cabling clear and rational of connection case inside, is easy to administer and maintain.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.