CN217821020U - Multistage dilatation formula optic fibre channel and dilatation system - Google Patents

Multistage dilatation formula optic fibre channel and dilatation system Download PDF

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Publication number
CN217821020U
CN217821020U CN202220937452.2U CN202220937452U CN217821020U CN 217821020 U CN217821020 U CN 217821020U CN 202220937452 U CN202220937452 U CN 202220937452U CN 217821020 U CN217821020 U CN 217821020U
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bottom plate
plate
side plate
limiting block
butt joint
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CN202220937452.2U
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Chinese (zh)
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韩峰
蔡佳佳
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Shanghai Huijue Network Communication Equipment Co ltd
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Shanghai Huijue Network Communication Equipment Co ltd
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Abstract

The utility model discloses a multistage dilatation formula optic fibre channel and dilatation system. Multistage dilatation formula fiber channel includes the bottom plate, two extension outer panels and two extension interior plates, through the bottom plate stopper, first butt joint stopper, first pivot and bottom plate commentaries on classics overlap and mutually support, can accomplish fast the assembly of bottom plate and extension outer panel and the installation state of rotatable adjustment extension outer panel, through second butt joint stopper, the interior plate stopper, second pivot and interior plate commentaries on classics overlap and mutually support, can accomplish fast the assembly of extension inner panel and extension outer panel and the installation state of rotatable adjustment extension inner panel, through the installation state of rotatable adjustment extension inner panel and extension outer panel, can be safe, realize rapidly the dilatation step by step of fiber channel, can effectively reduce or shorten computer lab construction time, follow-up dilatation, reform transform and maintain conveniently.

Description

Multistage dilatation formula optic fibre channel and dilatation system
Technical Field
The utility model belongs to the technical field of the optic fibre wiring, concretely relates to multistage dilatation formula optic fibre channel and dilatation system.
Background
In the mobile internet era, data traffic is continuously increased, machine room optical fiber deployment is also continuously increased, and how to rapidly deploy and elastically expand the capacity becomes the key point of machine room optical fiber construction.
At present, most of machine room optical fiber channel capacity expansion adopts a newly-added mode, except for the channel, corresponding supports and hangers are also newly added, the cost is wasted, the limited space of the machine room is limited, and the quick deployment and capacity expansion are also a burden.
In addition, part of manufacturers adopt a scheme of expanding the capacity of the combined type channel, the combined type channel adopts a structure of a mounting substrate, two side coamings and two side cover plates, the two side coamings are connected with the mounting substrate at the bottom in a fastening mode through bolts after being plugged, and the width of the channel can be adjusted through the two side coamings. On one hand, the two side enclosing plates are fastened through bolts and nuts after being inserted into the mounting substrate, so that the structure is complex to mount, low in efficiency, long in engineering mounting period and not beneficial to rapid large-scale deployment; on the other hand because both sides bounding wall is pegged graft with mounting substrate, need loosen fastening bolt when the dilatation, behind the nut, the dilatation just can be realized to the bounding wall of outside pull both sides, because lay a large amount of optic fibre on the mounting substrate this moment, under the pressure effect that receives a large amount of optic fibre, mounting substrate and both sides bounding wall very difficultly carry out relative displacement again, consequently need many people cooperation operation during the dilatation, it is very hard to waste time and energy, if too big or operate carelessly hard, still can take place because of the incident that mounting substrate and both sides bounding wall break away from and cause.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a multistage dilatation formula fiber channel that structural design is reasonable, follow-up dilatation is safe, swift is provided.
In order to solve the technical problem, the technical scheme of the utility model is that:
multistage dilatation formula fiber channel includes:
the plate comprises a bottom plate, wherein a plurality of bottom plate rotating sleeves are respectively formed on the left side and the right side of the bottom plate, the bottom plate rotating sleeves are arranged at intervals along the length direction of a plate body, a bottom plate butt joint gap is respectively formed between two adjacent bottom plate rotating sleeves on the same side, and a bottom plate limiting block extending to the bottom plate butt joint gap is formed at one end of each bottom plate rotating sleeve; a bottom plate fixing groove is formed in the bottom of the bottom plate and extends along the length direction of the plate body;
the two extension outer side plates are respectively positioned at the left side and the right side of the bottom plate, a first butt joint body corresponding to the butt joint gap of the bottom plate is formed at one side of each extension outer side plate, a first butt joint limiting block matched with the bottom plate limiting block is arranged at one end of each first butt joint body, a first rotating shaft capable of extending into a corresponding bottom plate rotating sleeve is arranged at the other end of each first butt joint body, and the length of each first rotating shaft is consistent with that of the corresponding bottom plate limiting block; the expansion outer side plate is hinged with the bottom plate through a first rotating shaft; a plurality of second butt-joint bodies are formed on the other side of the expanded outer side plate, and outer side plate butt-joint gaps are formed between every two adjacent second butt-joint bodies respectively; one end of the second butt joint body is provided with a second butt joint limiting block, and the other end of the second butt joint body is provided with a second rotating shaft; the bottom of the expansion outer side plate is provided with an outer side plate fixing groove which extends along the length direction of the plate body;
the two extended inner side plates correspond to the two extended outer side plates respectively, an inner side plate rotating sleeve corresponding to the butt joint gap of the outer side plates is formed on one side, adjacent to the extended outer side plates, of the extended inner side plates, an inner side plate limiting block matched with the second butt joint limiting block is arranged at one end of the inner side plate rotating sleeve, and the length of the inner side plate limiting block is consistent with that of the second rotating shaft; the expansion inner side plate is hinged with the expansion outer side plate through a second rotating shaft; the bottom of extension medial plate is provided with the medial plate fixed slot, the medial plate fixed slot extends the setting along the length direction of plate body.
As a preferred technical scheme, the bottom plate limiting block and the first butt joint limiting block form a circular structure after being complemented.
As a preferred technical scheme, the bottom plate limiting block and the first butt joint limiting block are both semicircular blocks or semicircular blocks.
As a preferable technical scheme, the second butt joint limiting block and the inner side plate limiting block form a circular structure after being complemented.
As the preferred technical scheme, the second butt joint limiting block and the inner side plate limiting block are both semicircular blocks or semicircular blocks.
Preferably, the bottom plate fixing groove, the outer side plate fixing groove and the inner side plate fixing groove are all T-shaped grooves with openings at the bottoms.
The utility model also provides an optical fiber dilatation system that deployment speed is fast, can accelerate the computer lab construction progress, save the dilatation cost, include:
the optical fiber channel is the multi-stage capacity-expanding optical fiber channel;
the supporting beam is used for supporting the optical fiber channel and is provided with a bottom plate fixing hole, an outer side plate fixing hole and an inner side plate fixing hole;
a bottom plate fixture for fixedly connecting the support beam with the bottom plate portion of the fiber channel;
the side plate fixing piece is used for fixedly connecting the supporting beam with the expanded outer side plate part of the optical fiber channel in a normal mode; and under the capacity expansion mode, the side plate fixing piece is used for fixedly connecting the supporting beam with the expanded inner side plate part of the optical fiber channel.
As a preferred technical solution, the fiber expansion system further includes a hanging assembly for hanging the supporting beam.
Compared with the prior art, the utility model discloses following beneficial effect has at least: the bottom plate, the extension outer panel, extension inner panel structural design is ingenious, through the bottom plate stopper, first butt joint stopper, first pivot and bottom plate swivel sleeve are mutually supported, can accomplish the concatenation of assembling of bottom plate and extension outer panel fast, satisfy the installation state that bears the weight of demand and rotatable adjustment extension outer panel, pass through the second butt joint stopper, the inner panel stopper, second pivot and inner panel swivel sleeve are mutually supported, can accomplish the concatenation of assembling of extension inner panel and extension outer panel fast and rotatable adjustment extension inner panel's installation state, through the bottom plate fixed slot, the installation and the regulation of optic fibre channel and supporting beam can be realized fast to outer panel fixed slot and inner panel fixed slot and corresponding mounting, it is swift convenient to install, through the installation state of rotatable adjustment extension inner panel and extension outer panel, can be safe, realize the dilatation step by step of optic fibre channel fast, can effectively reduce or shorten computer lab construction time, follow-up dilatation, the whole change and maintenance convenience.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is one of the assembly reference diagrams of the multi-stage expandable fiber channel according to the embodiment of the present invention;
FIG. 2 is a second illustration of an assembly reference for a multi-stage fiber channel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bottom plate in an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at I;
fig. 5 is a schematic structural view of an extended outer panel in an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at II;
FIG. 7 is a schematic structural view of an expanded inner side plate according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at III;
FIG. 9 is a schematic view of the steps taken to install the extended outer panels of the embodiment of the present invention;
FIG. 10 is a schematic view of the steps in installing the expanded inner decking in an embodiment of the invention;
fig. 11 is a state reference diagram of the capacity expansion system in the normal mode according to the embodiment of the present invention;
FIG. 12 is an enlarged view of a portion of FIG. 11 at IV;
FIG. 13 is a schematic view of the assembly of the support beam with the base plate and the extended outer side plate;
FIG. 14 is a schematic view of the release of the side panel fasteners between the expanded outer side panel and the support beam;
fig. 15 is a state reference diagram of the embodiment of the present invention when the capacity expansion system is in the capacity expansion mode.
Detailed Description
The invention is further explained below by referring to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments may be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 and 2, the multi-stage expansion type optical fiber channel includes a bottom plate 1, two expansion outer side plates 2 and two expansion inner side plates 3, wherein the two expansion outer side plates 2 are respectively located at the left and right sides of the bottom plate 1, the expansion inner side plates 3 are arranged corresponding to the expansion outer side plates 2, and the bottom plate 1, the expansion outer side plates 2 and the expansion inner side plates are all made of plastic and are formed by injection molding.
Referring to fig. 3 and 4, a plurality of bottom plate rotating sleeves 11 are respectively formed on the left side and the right side of the bottom plate 1, the bottom plate rotating sleeves 11 are arranged at intervals along the length direction of the plate body, a bottom plate butt joint gap 12 is respectively formed between two adjacent bottom plate rotating sleeves 11 on the same side, a bottom plate limiting block 13 extending to the bottom plate butt joint gap 12 is formed at one end of each bottom plate rotating sleeve 11, and the bottom plate limiting block 13 is preferably semi-annular, and can be of course semicircular and the like; a bottom plate fixing groove 14 is formed in the bottom of the bottom plate 1, and the bottom plate fixing groove 14 extends along the length direction of the plate body; bottom plate fixed slot 14 preferably adopts bottom open-ended T type groove structure, can conveniently place T type bolt, and T type bolt can be followed bottom plate fixed slot 14 and adjusted the removal, makes things convenient for the installation of bottom plate fixed.
Referring to fig. 5, fig. 6 and fig. 9, a first butt joint body 21 corresponding to the bottom plate butt joint gap 12 is formed on one side of the extended outer panel 2, and a first butt joint limiting block 22 matched with the bottom plate limiting block 13 is provided at one end of the first butt joint body 21, in this embodiment, the first butt joint limiting block 22 is illustrated as a semi-annular structure, although a semi-circular structure may also be adopted, as long as the bottom plate limiting block 13 and the first butt joint limiting block 22 form a circular structure after being complemented, which all belong to the protection scope of the present invention; the other end of the first butt-joint body 21 is provided with a first rotating shaft 23 which can extend into the corresponding bottom plate rotating sleeve 11, and the length of the first rotating shaft 23 is consistent with that of the bottom plate limiting block 13.
Referring to fig. 9, when the extended outer side plate is installed, in step (a), the first butt-joint limiting blocks 22 of the extended outer side plate 2 are aligned with the limiting bayonets of the corresponding bottom plate limiting blocks 13 on the bottom plate 1; translating the first butt joint body 21 of the expanded outer side plate 2 to the bottom plate butt joint gap 12 of the bottom plate 1; step (c), inserting the first rotating shaft 23 of the extended outer side plate 2 into the corresponding bottom plate rotating sleeve 11 on the bottom plate 1, so that the extended outer side plate 2 and the bottom plate 1 can be hinged and mounted, and the mode not only is reliable in connection and can meet the bearing requirement, but also is quick and convenient to operate; and (d) finally, as long as the outer side plate 2 is rotated to any angle, the first butt limiting blocks 22 on the outer side plate 2 and the limiting bayonets of the corresponding bottom plate limiting blocks 13 on the bottom plate 1 are staggered, the first rotating shafts 23 of the outer side plate 2 can only rotate in the bottom plate rotating sleeves 11 and cannot axially move, so that the outer side plate 2 and the bottom plate 1 are limited, and the outer side plate 2 and the bottom plate 1 can be prevented from being separated from each other in other states.
Referring to fig. 5 and 6 again, a plurality of second butt-joint bodies 24 are formed on the other side of the extended outer side plate 2, and outer side plate butt-joint gaps 25 are respectively formed between two adjacent second butt-joint bodies 24; one end of the second butt joint body 24 is provided with a second butt joint limiting block 26, and the other end of the second butt joint body 24 is provided with a second rotating shaft 27; the bottom of the extended outer side plate 2 is provided with an outer side plate fixing groove 28, and the outer side plate fixing groove 28 extends along the length direction of the plate body; similarly, bottom open-ended T type groove structure is preferably adopted in outer panel fixed slot 28, can conveniently place T type bolt, and T type bolt can be followed outer panel fixed slot 28 and adjusted the removal, and the installation that conveniently expands outer panel 2 is fixed.
Referring to fig. 7, 8 and 9, an inner side plate rotating sleeve 31 corresponding to the outer side plate butt-joint gap 25 is formed on one side of the extension inner side plate 3 adjacent to the extension outer side plate 2, an inner side plate limiting block 32 matched with the second butt-joint limiting block 26 is arranged at one end of the inner side plate rotating sleeve 31, the second butt-joint limiting block 26 and the inner side plate limiting block 32 form a circular structure after being complemented, and the length of the inner side plate limiting block 32 is consistent with that of the second rotating shaft 27.
Referring to fig. 10, when the expanded inner side plate is installed, in step (e), the inner side plate limit blocks 32 of the expanded inner side plate 3 are aligned with the limit bayonets of the corresponding second butt limit blocks 26 on the expanded outer side plate 2; step (f), translating the inner side plate rotating sleeve 31 of the expanded inner side plate 3 to the outer side plate butt joint gap 25 of the expanded outer side plate 2; step (g), inserting an inner side plate rotating sleeve 31 of the extension inner side plate 3 into a corresponding second rotating shaft 27 on the extension outer side plate 2, so that the extension inner side plate 3 and the extension outer side plate 2 can be hinged; step (h), at last, as long as the extension inner plate 3 is rotated by any angle, the limit bayonets of the corresponding second butt-joint limit blocks 26 on the extension inner plate 3 and the extension outer plate 2 are staggered, the second rotating shaft 27 of the extension outer plate 2 can only rotate in the inner plate rotating sleeve 31, and the inner plate rotating sleeve 31 cannot axially move, so that the limitation of the extension outer plate 2 and the extension inner plate 3 is realized, and the extension outer plate 2 and the extension inner plate 3 can be prevented from being separated in other states.
The bottom of the extension inner side plate 3 is provided with an inner side plate fixing groove 33, and the inner side plate fixing groove 33 extends along the length direction of the plate body. Similarly, the bottom opening of the T-shaped groove structure is preferably adopted in the inner side plate fixing groove 33, T-shaped bolts can be conveniently placed, the T-shaped bolts can be adjusted and moved along the inner side plate fixing groove 33, and the inner side plate 3 can be conveniently expanded and installed and fixed.
Referring to fig. 11 and 12, the fiber expansion system includes the fiber channel, the supporting beam 4 for supporting the fiber channel, the bottom plate fixing member 5, the side plate fixing member 6, and the hanging member 7 for hanging the supporting beam 4;
referring to fig. 13, the supporting beam 4 is provided with a bottom plate fixing hole 41, an outer side plate fixing hole 42 and an inner side plate fixing hole 43, and each fixing hole is preferably a strip-shaped hole; the floor fixture 5 may be implemented as a T-bolt and nut, the T-bolt being slidably disposed in the floor-fixing groove 14 and cooperating with the nut to fixedly connect the support beam 4 with the floor 1 portion of the optical fiber channel.
Referring to fig. 12, the side plate fixing member 6 includes an L-shaped fixing frame 61, a T-shaped bolt 63, and a nut 64, wherein locking holes 62 are respectively formed on two fixing plates of the L-shaped fixing frame 61; in a normal mode, the supporting beam 4 is fixedly connected with the expansion outer side plate 2 through an L-shaped fixing frame 61, a T-shaped bolt and a nut; under the dilatation mode, the supporting beam 4 is fixedly connected with the expansion inner side plate 3 through an L-shaped fixed frame 61 and T-shaped bolts.
The specific installation and capacity expansion method comprises the following steps:
referring to fig. 11 and 13, in a normal mode, the bottom plate 1 in the optical fiber channel is fixed to the supporting beam 4 by the bottom plate fixing member 5, the two expanded outer side plates 2 in the optical fiber channel are rotated to an upright state, and the supporting beam 4 is fixedly connected to the two expanded outer side plates 2 by the side plate fixing members 6, respectively; two expansion inner side plates 3 in the optical fiber channel are respectively hinged with the corresponding expansion outer side plates 2 and are in a natural sagging state; at the moment, the two extended outer side plates 2 and the bottom plate 1 jointly form a groove-shaped channel for accommodating optical fibers;
referring to fig. 14, during primary expansion, nuts 64 on the L-shaped fixing frame 61 between the expansion outer side plate 2 and the supporting beam 4 are loosened, the L-shaped fixing frame 61 is taken down, the loosened expansion outer side plate 2 is rotated outward to a horizontal state, the expansion inner side plate 3 corresponding to the expansion outer side plate 2 is rotated upward to an upright state, the supporting beam 4 is fixedly connected with the expansion inner side plate 3 rotated to the upright state by the L-shaped fixing frame 61, T-shaped bolts and nuts, and at this time, the bottom of the groove-shaped channel for accommodating the optical fiber is widened, thereby completing the primary expansion;
during secondary expansion, according to the same method as that during primary expansion, the side plate fixing piece between the other expansion outer side plate 2 and the support cross beam 4 is loosened, the expansion outer side plate 2 is rotated outwards to be in a horizontal state, the expansion inner side plate 3 corresponding to the expansion outer side plate is rotated upwards to be in a vertical state, the support cross beam 4 is fixedly connected with the expansion inner side plate 3 by using the side plate fixing piece 6, and at the moment, the bottom of the groove-shaped channel for accommodating the optical fiber is widened, so that secondary expansion is completed (refer to fig. 15).
To sum up, the utility model discloses well bottom plate, extension outer panel, extension interior plate structural design is ingenious, pass through the bottom plate stopper, first butt joint stopper, first pivot and bottom plate swivel sleeve mutually support, can accomplish the installation state of bottom plate and extension outer panel's the montage of assembling and rotatable adjustment extension outer panel fast, through second butt joint stopper, the interior plate stopper, second pivot and interior plate swivel sleeve mutually support, can accomplish the installation state of extension interior plate and extension outer panel's the montage of assembling and rotatable adjustment extension interior plate fast, through the bottom plate fixed slot, the installation and the regulation of optic fibre channel and supporting beam can be realized fast to outer panel fixed slot and interior plate fixed slot and corresponding mounting and fixed, the installation is swiftly convenient. Through the installation state of rotation adjustment extension interior plate and extension outer panel, can realize safely, fast dilatation step by step of optic fibre channel, can effectively reduce or shorten computer lab construction time, follow-up dilatation, rectification and reform and maintain the convenience.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications of the invention without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (8)

1. Multistage dilatation formula fiber channel, its characterized in that includes:
the plate comprises a bottom plate, wherein a plurality of bottom plate rotating sleeves are respectively formed on the left side and the right side of the bottom plate, the bottom plate rotating sleeves are arranged at intervals along the length direction of a plate body, a bottom plate butt joint gap is respectively formed between two adjacent bottom plate rotating sleeves on the same side, and a bottom plate limiting block extending to the bottom plate butt joint gap is formed at one end of each bottom plate rotating sleeve; a bottom plate fixing groove is formed in the bottom of the bottom plate and extends along the length direction of the plate body;
the two extension outer side plates are respectively positioned at the left side and the right side of the bottom plate, a first butt joint body corresponding to the butt joint gap of the bottom plate is formed at one side of each extension outer side plate, a first butt joint limiting block matched with the bottom plate limiting block is arranged at one end of each first butt joint body, a first rotating shaft capable of extending into a corresponding bottom plate rotating sleeve is arranged at the other end of each first butt joint body, and the length of each first rotating shaft is consistent with that of the corresponding bottom plate limiting block; the expansion outer side plate is hinged with the bottom plate through a first rotating shaft; a plurality of second butt-joint bodies are formed on the other side of the expanded outer side plate, and outer side plate butt-joint gaps are formed between every two adjacent second butt-joint bodies respectively; one end of the second butt joint body is provided with a second butt joint limiting block, and the other end of the second butt joint body is provided with a second rotating shaft; the bottom of the expanded outer side plate is provided with an outer side plate fixing groove which extends along the length direction of the plate body;
the two extended inner side plates correspond to the two extended outer side plates respectively, an inner side plate rotating sleeve corresponding to the butt joint gap of the outer side plates is formed on one side, adjacent to the extended outer side plates, of the extended inner side plates, an inner side plate limiting block matched with the second butt joint limiting block is arranged at one end of the inner side plate rotating sleeve, and the length of the inner side plate limiting block is consistent with that of the second rotating shaft; the expansion inner side plate is hinged with the expansion outer side plate through a second rotating shaft; the bottom of extension medial plate is provided with the medial plate fixed slot, the medial plate fixed slot extends the setting along the length direction of plate body.
2. The multi-stage expandable fiber channel of claim 1, wherein: the bottom plate limiting block and the first butt joint limiting block form a circular structure after being complemented.
3. The multi-stage expandable fiber channel of claim 2, wherein: the bottom plate limiting block and the first butt limiting block are both semicircular blocks or semicircular blocks.
4. The multi-stage expandable fiber channel of claim 1, wherein: the second butt joint limiting block and the inner side plate limiting block form a circular structure after being complemented.
5. The multi-stage expandable fiber channel of claim 4, wherein: the second butt joint limiting block and the inner side plate limiting block are both semicircular blocks or semicircular blocks.
6. The multi-stage expandable fiber channel of claim 1, wherein: the bottom plate fixing groove, the outer side plate fixing groove and the inner side plate fixing groove are all T-shaped grooves with openings at the bottoms.
7. An optical fiber capacity expansion system, comprising:
a fiber channel, the fiber channel being the multi-stage expandable fiber channel of claim 1;
the supporting beam is used for supporting the optical fiber channel and is provided with a bottom plate fixing hole, an outer side plate fixing hole and an inner side plate fixing hole;
a bottom plate fixture for fixedly connecting the support beam with the bottom plate portion of the fiber channel;
the side plate fixing piece is used for fixedly connecting the supporting beam with the expanded outer side plate part of the optical fiber channel in a normal mode; and under the capacity expansion mode, the side plate fixing piece is used for fixedly connecting the supporting beam with the expanded inner side plate part of the optical fiber channel.
8. The fiber expansion system of claim 7, wherein: the hanging device further comprises a hanging component used for hanging the supporting beam.
CN202220937452.2U 2022-04-21 2022-04-21 Multistage dilatation formula optic fibre channel and dilatation system Active CN217821020U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220937452.2U CN217821020U (en) 2022-04-21 2022-04-21 Multistage dilatation formula optic fibre channel and dilatation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220937452.2U CN217821020U (en) 2022-04-21 2022-04-21 Multistage dilatation formula optic fibre channel and dilatation system

Publications (1)

Publication Number Publication Date
CN217821020U true CN217821020U (en) 2022-11-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220937452.2U Active CN217821020U (en) 2022-04-21 2022-04-21 Multistage dilatation formula optic fibre channel and dilatation system

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