Light traffic box convenient to dilatation is reformed transform and is used
Technical Field
The invention relates to the field of communication, in particular to an optical cross connecting cabinet convenient for expansion transformation.
Background
An optical cable cross-connecting cabinet, also commonly called a street cabinet, is generally placed on a main optical cable for optical cable branching, is a passive device, has similar functions with the original copper cable cross-connecting cabinet, and only a large number of optical cables, after passing through the optical cable cross connecting cabinet, the optical cable cross connecting cabinet is divided into a plurality of small-logarithm optical cables in different directions, of course, the functional optical cable joint box can also be realized, but the difference is that the optical cable cross connecting box can realize the jumper connection of the optical cable and can also be used for testing and maintenance, the optical cross connecting box OCC is mainly suitable for the optical cross connecting points in the optical transmission network and the access network, the box body is made of high-quality stainless steel materials, the strength is high, the outdoor protection is reliable, the box body can adapt to the outdoor severe environment, when the environmental temperature is-40 ℃ to +60 ℃, the functions of water prevention, dust prevention, aging resistance, condensation prevention, radiation protection and interference resistance can be effectively realized, and mechanical collision can be borne to a certain degree.
In the using process of the existing optical cross connecting box, because a plurality of optical fibers need to be connected inside the existing optical cross connecting box, the optical fibers are easy to be mutually wound and cannot be well distinguished and classified, so that great troubles are caused to later-stage maintenance and modification, and the modification of a circuit is seriously influenced; meanwhile, the unopened service optical fiber cannot be temporarily parked and protected in the optical cross-connect box, so that clear judgment on the opening condition of the service is inconvenient; simultaneously the inside volume of current light is handed over the case all is fixed unchangeable, often needs to carry out the dilatation transformation to the light and hands over the case at present, need increase more in inside and join in marriage the device, just so need install a plurality of light and hand over the case or change the light of bulky and hand over the case and use, has caused the waste of resource, and the dilatation transformation needs to stop using this regional optic fibre one end time, influences the in-service use condition.
Disclosure of Invention
The invention aims to provide an optical cross connecting cabinet convenient for capacity expansion transformation, which aims to overcome the technical problems, and the optical cross connecting cabinet can classify and fix optical fibers through a plurality of mechanisms so as to facilitate later maintenance, statistics and transformation; meanwhile, a plurality of berthers are designed through the upper structure of the berther bracket, so that temporary parking and protection of unopened service optical fibers are facilitated, and the opening condition of the service is clearly judged; simultaneously, the internal volume is enlarged through the stretching of the first box body and the second box body, the expansion and transformation are quickly and conveniently completed, and the practical application is facilitated.
The purpose of the invention can be realized by the following technical scheme:
a light cross-linked box convenient for capacity expansion transformation comprises a first box body, a base, a vertical frame, a 12-core fusion-assembly integrated tray, a wire ring, a berther bracket, a light splitting frame, a first optical cable fixing cross beam, a second optical cable fixing cross beam, a direct melting frame, a bottom plate, a protective coil, a berther, an optical cable fixing lug, a fiber winding barrel cover plate, an optical cable steel wire fastening seat, a perforation, a fastening bolt, a box door, a recording box, a second box body, a fixing block, a sliding chute, an installation box, a threaded rod, a rotating wheel, a sleeve, a secondary helical gear, a main helical gear, a rotating shaft and a base door, wherein the box door is movably installed on one side of the first box body through a hinge, the recording box is installed on the inner side of the box door, the sliding chute is internally installed with the second box body, the fixing block is installed on one, the mounting box is mounted on one side of the top of the first box body, a rotating wheel is arranged on one side of the mounting box, a sleeve is arranged in the center of the interior of the mounting box, a secondary helical gear is mounted at the bottom of the sleeve, the bottom end of a threaded rod sequentially penetrates through the sleeve and the secondary helical gear, a main helical gear is mounted on one side of the secondary helical gear and is meshed with the secondary helical gear, a rotating shaft is mounted in the center of one side of the main helical gear, and one end of the rotating shaft penetrates through the wall of;
the bottom of the first box body is provided with a base, and a base door is arranged on one side of the base through a hinge;
a vertical frame is arranged on the inner wall of one side of the first box body, a plurality of 12-core fusion-assembly integrated trays are vertically arranged on one side of the vertical frame, a berther support is arranged on the inner wall of the other side of the first box body, a plurality of berthers are arranged on one side of the berther support, a plurality of wire rings are arranged on two sides of the 12-core fusion-assembly integrated trays and the inner wall of the other side of the first box body and positioned at the bottom of the berther support, fiber winding barrels are symmetrically arranged at the bottom of one side of the vertical frame, a fiber winding barrel cover plate is arranged at one end of each fiber winding barrel, a light splitting frame is arranged on the inner wall of the other side of the first box body, a first optical cable fixing cross beam is arranged on the inner wall of one side of the first box body and positioned at the bottom of the vertical frame, a second optical cable fixing cross beam is arranged on the inner wall of one, a bottom plate is arranged at the bottom of the inner side of the first box body, a plurality of protection coils are arranged at the top of the bottom plate, and a plurality of optical cable fixing lugs are arranged on one side of the second optical cable fixing cross beam;
a plurality of optical cable steel wire fastening seats are mounted on one side of the first optical cable fixing cross beam, through holes are formed in the tops of the optical cable steel wire fastening seats, and fastening bolts are mounted at one ends of the optical cable steel wire fastening seats;
the direct-melting frame comprises a direct-melting edge plate, a direct-melting cover plate, a clamping groove, a clamping block and a guide rail seat, the direct-melting edge plate is arranged at the top and the bottom of the direct-melting edge plate, the clamping groove is formed in the surface side of the direct-melting cover plate, the clamping block is arranged on one side of the guide rail seat, and the guide rail seat is arranged on the inner side of the clamping groove through the clamping block.
As a further scheme of the invention: the sleeve top outside and the pivot outside all are equipped with the bearing, sleeve and pivot pass through the bearing and install inside the install bin.
As a further scheme of the invention: the novel rotary wheel is characterized in that a threaded hole is formed in the sleeve, the threaded rod is matched with the sleeve with the threaded hole, a hexagonal shaft is installed at the center of one side of the rotary wheel, an inner hexagonal groove is formed in one end of the rotary shaft, and the hexagonal shaft and the inner hexagonal groove are matched for use.
As a further scheme of the invention: the first box body and the base are connected with a grounding device, the withstand voltage between the grounding device and a box body metal workpiece is not less than 3000V, the insulation resistance is more than 2 x 104M omega, and the test voltage is direct current 500V.
As a further scheme of the invention: a plurality of mounting hole has been seted up to the base, the base bottom is provided with the cement base, the base passes through expansion bolts and fixes first box on the cement base.
As a further scheme of the invention: the inner side of the box door is embedded with a door lining plate, and the inner side of the door lining plate is provided with a security door lock.
As a further scheme of the invention: a wire groove is formed in one side of the guide rail seat, and the clamping groove and the clamping block are matched for use.
The using operation steps of the light cross connecting box are as follows:
the method comprises the following steps: fixing the first box body on a cement base through an expansion bolt by using a base to realize the integral fixation of the optical cable cross connecting box, and then sequentially mounting all internal components on the inner wall of the first box body in a classified manner through screws;
step two: the optical fiber penetrates through a protective coil of the bottom plate, the optical splitter is installed on the optical splitting frame, fiber cores in two directions are directly welded on an ODF fiber melting disc in the direct melting frame, a welding head and two movable joints are reduced, classified optical fibers and internal electronic elements are fixed through optical cable fixing lugs of a first optical cable fixing cross beam and a second optical cable fixing cross beam and an optical cable steel wire fastening seat, and meanwhile, the internal optical fibers are classified and fixed through a plurality of wire loops;
step three: when carrying out the dilatation when handing over the case and transforming, it is fixed through stretching out the back with the second box in the spout of first box, enlarged the inside area of whole light and handed over the case, then accomplish the light and handed over the case dilatation transformation through increasing installation 12 core and melting and joining in marriage integrated tray.
The invention has the beneficial effects that: through reasonable structural design, the first box body adopts a double-sided operation structural design internal layout, adopts a front-back symmetrical design structure, reserves a front-back jump fiber routing channel, is convenient to construct and maintain, adopts a high-quality steel plate die punch forming for a main structural component of the optical cross-linked box, is subjected to surface spraying treatment, has the thickness of not less than 1.5mm, high strength and good corrosion resistance, fills a heat-insulating material between the first box body and the second box body, wherein the heat conductivity coefficient of the heat-insulating material is less than 0.041W/M.K, and the bonding strength between the heat-insulating material and the face plates of the first box body and the second box body is more than 0.09MPa, thereby ensuring that the box body has good heat-insulating effect; a plurality of wire loops in the optical cross-connecting box can classify and bundle optical fibers for fixation, meanwhile, the optical fibers penetrate through the through holes of the optical cable steel wire fastening seat, the fastening bolts are screwed, one ends of the fastening bolts limit and fix the optical fibers in the through holes, meanwhile, a direct melting frame consisting of a direct melting side plate and a direct melting cover plate fixes the guide rail seat provided with the clamping block through the clamping groove, one side of the guide rail seat is provided with a wire groove, the limiting and fixing of the welded optical fibers are facilitated, the optical fibers can be classified and fixed through a plurality of mechanisms, the inside of the optical cross-connecting box is classified and limited, the cleanness of the inside of the optical cross-connecting box is guaranteed, and the later maintenance, statistics; meanwhile, a plurality of berthers can be designed on the berther bracket according to the actual installation situation structure, so that the temporary parking and protection of the unopened service optical fiber are facilitated, and the opening situation of the service is clearly judged; simultaneously through the expansion of stretching of first box and second box, through the interior hexagonal groove of seting up the hexagonal shaft insertion pivot of runner, then it drives main helical gear rotation to rotate the runner, it rotates from helical gear to drive through gear engagement, be connected with the sleeve of seting up the screw hole from the helical gear top, the threaded rod passes the sleeve, clockwise rotation runner, the sleeve upward movement on the threaded rod, the inside volume of light traffic case has been expanded to draw out the spout in the second box from the first box, be convenient for later stage dilatation transformation uses, anticlockwise rotation runner, the sleeve downstream on the threaded rod, the spout that the second box was received in the first box guarantees normal use, this light traffic case can be fast convenient completion dilatation transformation, the practical application of being convenient for.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the present invention.
FIG. 3 is a schematic structural diagram of the back of the first box of the present invention.
Fig. 4 is a schematic view of the internal structure of the installation box of the present invention.
FIG. 5 is a schematic structural diagram of a first case according to the present invention.
FIG. 6 is a schematic view of the internal structure of the first casing according to the present invention.
FIG. 7 is an enlarged view of area A of FIG. 6 according to the present invention.
FIG. 8 is an enlarged view of area B of FIG. 6 according to the present invention.
In the figure: 1. a first case; 2. a base; 3. erecting a frame; 4. 12-core fusion-assembly integrated tray; 5. a wire loop; 6. a mooring support; 7. light splitting; 8. a first cable securing beam; 9. a second cable securing beam; 10. directly melting the frame; 11. a base plate; 12. a protective coil; 13. a mooring device; 14. the optical cable is fixed with the hangers; 15. winding a fiber drum; 16. a cover plate of the fiber winding barrel; 17. an optical cable steel wire fastening seat; 18. perforating; 19. fastening a bolt; 101. a box door; 102. a recording box; 103. a second case; 104. a fixed block; 105. a chute; 106. installing a box; 107. a threaded rod; 108. a rotating wheel; 109. a sleeve; 110. a slave bevel gear; 111. a main helical gear; 112. a rotating shaft; 201. a base door; 1001. directly melting the edge plate; 1002. directly melting the cover plate; 1003. a card slot; 1004. a clamping block; 1005. a guide rail seat.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, an optical cable cross-connecting box convenient for capacity expansion and transformation includes a first box body 1, a base 2, a vertical frame 3, a 12-core fusion-assembly integrated tray 4, a wire ring 5, a berther bracket 6, an optical splitting frame 7, a first optical cable fixing beam 8, a second optical cable fixing beam 9, a direct fusion frame 10, a bottom plate 11, a protective coil 12, a berther 13, an optical cable fixing hanger 14, a fiber winding tube 15, a fiber winding tube cover plate 16, an optical cable steel wire fastening seat 17, a perforation 18, a fastening bolt 19, a box door 101, a recording box 102, a second box body 103, a fixing block 104, a chute 105, a mounting box 106, a threaded rod 107, a rotating wheel 108, a sleeve 109, a secondary helical gear 110, a main helical gear 111, a rotating shaft 112 and a base door 201, the box door 101 is movably mounted on one side of the first box body 1 through a hinge, the first box body 1 and the second box body 103 are made of metal, a plastic spraying process, the box body has good corrosion resistance, aging resistance and damage resistance, is stable in physical and chemical properties, the top end surface of the box body can bear the vertical pressure of not less than 1000N, after the box door 101 is opened, the outermost end of the door of the box door 101 can bear the vertical pressure of not less than 200N, after the load is removed, the box body has no damage trace and permanent deformation, the inner side of the box door 101 is provided with the recording box 102, the recording meter is conveniently put in, the internal condition information is known in time, the top of the first box body 1 is provided with the chute 105, the chute 105 is internally provided with the second box body 103, one side of the top of the second box body 103 is provided with the fixed block 104, the bottom of the fixed block 104 is provided with the threaded rod 107, one side of the top of the first box body 1 is provided with the installation box 106, one side of the installation box 106 is provided with the rotating wheel 108, the center of the interior, a main helical gear 111 is arranged on one side of the secondary helical gear 110, the main helical gear 111 and the secondary helical gear 110 are meshed with each other, a rotating shaft 112 is arranged at the center of one side of the main helical gear 111, one end of the rotating shaft 112 penetrates through the wall of the installation box 106, and the threaded rod 107 is driven to move up and down in the sleeve 109 through the gear meshing transmission by rotating the rotating wheel 108, so that the internal volume of the light cross box is adjusted conveniently, and the expansion transformation is facilitated;
the base 2 is arranged at the bottom of the first box body 1, a base door 201 is mounted on one side of the base 2 through a hinge, the base door 201 can be conveniently opened, and the optical cable box can be conveniently mounted on a cement base through bolts;
the inner wall of one side of the first box body 1 is provided with a vertical frame 3, one side of the vertical frame 3 is vertically provided with a plurality of 12-core fusion integrated trays 4, the inner wall of the other side of the first box body 1 is provided with a berther bracket 6 which is convenient for installing a plurality of berthers 13, one side of the berther bracket 6 is provided with a plurality of berthers 13 which are convenient for temporarily parking and protecting unopened service optical fibers and clearly judging the opening condition of the service, the two sides of the plurality of 12-core fusion integrated trays 4 and the inner wall of the other side of the first box body 1 are provided with a plurality of wire rings 5 positioned at the bottom of the berther bracket 6 so as to be convenient for classifying, bundling and fixing the optical fibers, the bottom of one side of the vertical frame 3 is symmetrically provided with a fiber winding barrel 15, one end of the fiber winding barrel 15 is provided with a fiber winding barrel cover plate 16, the inner wall of the other side of the first box body 1 is provided, a second optical cable fixing cross beam 9 is arranged on the inner wall of one side of the first box body 1 and positioned at the bottom of the first optical cable fixing cross beam 8, so that classified optical fibers and electronic elements can be fixed conveniently, a direct melting frame 10 is arranged on one side of the first optical cable fixing cross beam 8 and one side of the second optical cable fixing cross beam 9, a bottom plate 11 is arranged at the bottom of the inner side of the first box body 1, a plurality of protective coils 12 are arranged at the top of the bottom plate 11, so that optical fibers penetrating into the light cross box from the bottom can be protected conveniently, and a plurality of optical cable fixing lugs 14 are;
a plurality of optical cable steel wire fastening seats 17 are installed on one side of the first optical cable fixing cross beam 8, through holes 18 are formed in the tops of the optical cable steel wire fastening seats 17, fastening bolts 19 are installed at one ends of the optical cable steel wire fastening seats 17, and limiting and fixing of optical fibers in the through holes 18 can be conveniently achieved by screwing the fastening bolts 19;
directly melt frame 10 including directly melting the sideboard 1001, directly melt apron 1002, draw-in groove 1003, fixture block 1004 and guide rail seat 1005, the both sides are directly melted the sideboard 1001 top and the bottom and are all installed and directly melt apron 1002, directly melt apron 1002 table side and seted up a plurality of draw-in groove 1003, fixture block 1004 is installed to guide rail seat 1005 one side, guide rail seat 1005 installs at the draw-in groove 1003 inboard through fixture block 1004, be convenient for install guide rail seat 1005 draw-in groove 1003 through fixture block 1004 that presses both sides, then loosen fixture block 1004 and realize fixing, be convenient for install and dismantle, the fibre core of two directions is welded on ODF melts the fine dish through directly melting frame 10 simultaneously, a fusion head and two loose joints have been reduced.
The outside of sleeve 109 top and the outside of pivot 112 all are equipped with the bearing, and sleeve 109 and pivot 112 pass through the bearing and install inside install bin 106, and the sleeve 109 of being convenient for and pivot 112 are fixed, guarantee sleeve 109 and pivot 112's normal work simultaneously.
The inside screw hole of seting up of sleeve 109, threaded rod 107 and the sleeve 109 cooperation of having seted up the screw hole are used, sleeve 109 reciprocates at threaded rod 107 when being convenient for guarantee threaded rod 107 to rotate through screw drive, drive the flexible adjustment that realizes the internal volume of box of second box 103, hexagonal axle is installed in runner 108 one side center department, hexagonal groove in 112 one end has been seted up to pivot, hexagonal axle and the cooperation of interior hexagonal groove are used, be convenient for connect runner 108 and 112 cooperations of pivot.
The first box body 1 and the base 2 are connected with a grounding device, the withstand voltage between the grounding device and a box body metal workpiece is not less than 3000V, the insulation resistance is more than 2 x 104M omega, the test voltage is direct current 500V, and the insulation protection effect on the light cross-connecting box is facilitated.
A plurality of mounting hole has been seted up to base 2, and base 2 bottom is provided with the cement base, and base 2 passes through expansion bolts to be fixed first box 1 on the cement base, and the installation of the light of being convenient for is handed over the case is fixed, guarantees the intensity of installation.
The inside lining board of inlaying of chamber door 101 installs, and the inside theftproof lock of installing of lining board plays the theftproof effect, avoids inside subassembly to lose and causes huge economic loss.
A wire groove is formed in one side of the guide rail seat 1005, and the clamping groove 1003 and the clamping block 1004 are matched for use, so that the guide rail seat 1005 can be conveniently installed, and meanwhile, the optical fiber is limited through the wire groove.
The using operation steps of the light cross connecting box are as follows:
the method comprises the following steps: fixing the first box body 1 on a cement base through an expansion bolt by using a base 2 to realize the integral fixation of the light cross connecting box, and then sequentially mounting all internal components on the inner wall of the first box body 1 in a classified manner through screws;
step two: the optical fiber penetrates through a protective coil 12 of a bottom plate 11, the optical splitter is installed on an optical splitting frame 7, fiber cores in two directions are directly welded on an ODF fiber-melting disc in a direct-melting frame 10, a fusion joint and two loose joints are reduced, classified optical fibers and internal electronic components are fixed through optical cable fixing lugs 14 of a first optical cable fixing cross beam 8 and a second optical cable fixing cross beam 9 and an optical cable steel wire fastening seat 17, the internal optical fibers are classified and fixed through a plurality of wire rings 5, the structure is provided with a parking device 13, temporary parking and protection of unopened service optical fibers are facilitated, meanwhile, the opening condition of a service is clearly judged, the optical fiber direct-melting function with sufficient capacity is met through a customized fusion-connection module of a 12-core fusion-assembly integrated tray 4, and the common passing optical fibers in engineering construction are properly solved;
step three: when carrying out the dilatation transformation to the light traffic case, fixed through stretching out the back with second box 103 in the spout 105 of first box 1, enlarged the inside area of whole light traffic case, then accomplish the light traffic case dilatation transformation through increasing installation 12 core match integration tray 4.
The working principle of the invention is as follows: the base 2 fixes the first box body 1 on a cement base through expansion bolts to realize the integral fixation of the optical cross connecting box, then all the components inside are sequentially installed on the inner wall of the first box body 1 in a classified mode through screws, the vertical frame 3 is used for fixing the 12-core fusion integrated tray 4 and the fiber winding barrel 15, the optical splitter is installed on the optical sub frame 7, a plurality of wire rings 5 inside the optical cross connecting box can classify and bundle the optical fibers and fix, meanwhile, the optical fibers pass through the through holes 18 of the optical cable steel wire fastening seat 17 on the first optical cable fixing cross beam 8, the fastening bolts 19 are screwed, one ends of the fastening bolts 19 limit and fix the optical fibers in the through holes 18, meanwhile, the direct fusion frame 10 formed by the direct fusion side plate 1001 and the direct fusion cover plate 1002 fixes the guide rail seat 1005 provided with the fixture block 1004 through the clamping groove 1003, the fiber cores in two directions are directly fused on the ODF fusion fiber plate in the direct fusion frame 10, and one fusion head and two movable joints are reduced, a wire groove is formed in one side of the guide rail seat 1005 so as to limit and fix the fused optical fibers, the optical cable fixing lugs 14 on the second optical cable fixing cross beam 9 fix the optical cables and internal electronic elements, and the optical fibers can be fixed in a classified manner through a plurality of mechanisms, so that the inside cleanness of the optical cable cross box is ensured, and later maintenance, statistics and transformation are facilitated; meanwhile, a plurality of berthers 13 can be designed on the berther bracket 6 according to the actual installation situation structure, thereby facilitating the temporary parking and protection of unopened service optical fibers and clearly judging the opening situation of the service, simultaneously, the internal volume can be expanded through the stretching of the first box body 1 and the second box body 103, the hexagonal shaft of the rotating wheel 108 is inserted into the inner hexagonal groove formed on the rotating shaft 112, then the rotating wheel 108 is rotated to drive the main helical gear 111 in the installation box 106 to rotate, the driven helical gear 110 is driven to rotate through the gear engagement, the sleeve 109 provided with a threaded hole is connected from the top of the helical gear 110, the threaded rod 107 penetrates through the sleeve 109, the rotating wheel 108 is rotated clockwise, the sleeve 109 moves upwards on the threaded rod 107, the second box body 103 is pulled out from the sliding groove 105 in the first box body 1 to expand the internal volume of the optical communication box, thereby facilitating the later expansion transformation, the rotating wheel 108 anticlockwise, the sleeve 109, the second box 103 is retracted into the chute 105 in the first box 1 to ensure normal use, and the light traffic box can be rapidly and conveniently completed with capacity expansion transformation.
Through reasonable structural design, the first box body 1 adopts a double-sided operation structural design internal layout, adopts a front-back symmetrical design structure, reserves a front-back jump fiber routing channel, is convenient to construct and maintain, adopts a high-quality steel plate die punch forming for a main structural component of the optical cross-linked box, is subjected to surface spraying treatment, has the thickness of not less than 1.5mm, high strength and good corrosion resistance, fills a heat-insulating material between the first box body 1 and the second box body 103, wherein the heat conductivity coefficient of the heat-insulating material is less than 0.041W/M.K, and ensures that the bonding strength between the heat-insulating material and the panels of the first box body 1 and the second box body 103 is more than 0.09MPa, thereby ensuring that the box body has good heat-; a plurality of wire rings 5 in the optical cross-connecting box can classify and bundle optical fibers fixedly, meanwhile, the optical fibers penetrate through a through hole 18 of an optical cable steel wire fastening seat 17, a fastening bolt 19 is screwed, one end of the fastening bolt 19 limits and fixes the optical fibers in the through hole 18, meanwhile, a direct melting frame 10 consisting of a direct melting edge plate 1001 and a direct melting cover plate 1002 fixes a guide rail seat 1005 provided with a clamping block 1004 through a clamping groove 1003, a wire groove is formed in one side of the guide rail seat 1005, the limiting and fixing of the welded optical fibers are facilitated, the optical fibers can be classified and fixed through a plurality of mechanisms, the interior is classified in a limited mode, the interior cleanness of the optical cross-connecting box is guaranteed, and later maintenance, statistics and transformation are facilitated; meanwhile, a plurality of berthers 13 can be designed on the berther bracket 6 according to the actual installation situation structure, so that the temporary parking and protection of the unopened service optical fiber are facilitated, and the opening situation of the service is clearly judged; meanwhile, the internal volume of the first box body 1 and the second box body 103 can be expanded by stretching, the hexagonal shaft of the rotating wheel 108 is inserted into the inner hexagonal groove formed in the rotating shaft 112, then the rotating wheel 108 is rotated to drive the main helical gear 111 to rotate, the driven helical gear 110 is driven to rotate through gear engagement, the sleeve 109 with a threaded hole is connected to the top of the helical gear 110, the threaded rod 107 penetrates through the sleeve 109, the rotating wheel 108 is rotated clockwise, the sleeve 109 moves upwards on the threaded rod 107, the second box body 103 is pulled out from the sliding groove 105 in the first box body 1 to expand the internal volume of the optical cross box, the later-stage expansion transformation is convenient, the rotating wheel 108 rotates anticlockwise, the sleeve 109 moves downwards on the threaded rod 107, the sliding groove 105 in the first box body 1 is retracted into the second box body 103 to ensure normal use, and the optical cross box can rapidly and conveniently complete expansion transformation and is.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.