CN217238479U - Plug-and-play elevator traveling prefabricated optical cable - Google Patents
Plug-and-play elevator traveling prefabricated optical cable Download PDFInfo
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- CN217238479U CN217238479U CN202220488475.XU CN202220488475U CN217238479U CN 217238479 U CN217238479 U CN 217238479U CN 202220488475 U CN202220488475 U CN 202220488475U CN 217238479 U CN217238479 U CN 217238479U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The utility model discloses a prefabricated optical cable of elevator retinue of plug-and-play relates to optical cable technical field. The utility model comprises an optical cable body and two end connectors, wherein the optical cable body comprises a light optical cable which can be attached to the existing elevator traveling cable without an optical fiber communication unit and a heavy optical cable which can be independently applied; the light optical cable comprises a central reinforcement member consisting of a torsion-free steel wire rope and an elastomer, a stranded layer consisting of a high-performance optical fiber unit containing anti-fatigue high-strength optical fibers and prestressed steel wire filling wires, a water-blocking wrapping tape and a protective layer; the heavy optical cable is extruded into the halogen-free flame-retardant outer sheath after two layers of prestressed steel wires are externally used for forward and reverse untwisting armoring on the light optical cable. The optical fiber in the optical cable has enough surplus length and the force bearing elements are all anti-torsion structures, the optical fiber does not generate torsion under the conditions of bearing tension and repeated bending, the optical fiber is still not stressed after the force bearing elements stretch due to stress and creep elongation, the transmission performance and the service life of the optical fiber are ensured, and the optical fiber in the optical cable can be used for communication, information acquisition and sensing.
Description
Technical Field
The utility model belongs to the technical field of the optical cable, especially, relate to a prefabricated optical cable of elevator retinue of plug and play.
Background
The elevator traveling cable is a kind of moving cable running along with the box or the lifting device, besides providing the working power supply for the moving device, it also transmits/exchanges the related monitoring information.
In the prior art, an elevator traveling cable mainly comprises a power unit, a communication unit, a protection reinforcing layer, an outer sheath and other parts, wherein the power unit comprises a main wire core, an insulating and shielding layer and a control wire; the communication unit comprises various signal lines, radio frequency lines and data lines; the protection reinforcement comprises steel wires and aramid fibers. With the advance of digitization and informatization, the requirements on information transmission and collection are higher and higher, and the requirements also include sensing requirements, the requirements of optical fiber communication units are increased, most of elevator traveling cables do not have optical fiber elements currently, and the prior art directly adopts conventional indoor or outdoor communication optical cables or integrates the conventional optical cables into the cables to form elevator traveling photoelectric composite cables.
Although the conventional optical cable can bear certain dynamic construction short-term tension during installation and construction, the conventional optical cable can work in a static state including a horizontal or vertical state for a long time after the construction tension is released, when the elevator traveling cable is used in an up-and-down vertical dynamic state, under the influence of self-gravity, repeated bending, acceleration, wind load and the like, a conductive element and a reinforcing element in the cable can extend, the conductive element is generally made of a copper material, the reinforcing element is generally made of a steel material, and the dynamically-running round structural cable can also twist to cause extension. If a conventional optical cable is simply implanted in an elevator travelling cable structure, the elongation of the cable is much greater than the allowable elongation of the optical fiber, and repeated bending and acceleration of high frequency can accelerate fatigue of the optical fiber, resulting in increased loss of the optical fiber in the cable until breakage. In summary, conventional cables are not suitable for dynamic use with elevator traffic.
In addition, optical fibers in the cable and communication system equipment need to be connected through a special fusion splicer, great difficulty is brought to construction and operation maintenance, and therefore, the plug-and-play elevator traveling prefabricated optical cable is significant in terms of the problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prefabricated optical cable of elevator retinue of plug and play has solved above problem.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses a plug-and-play elevator traveling prefabricated optical cable, which comprises a cable body and optical fiber connectors with interfaces, wherein the optical fiber connectors are connected with the two ends of the optical cable body;
the optical cable body comprises a central reinforcing piece positioned in the central position, a stranded layer arranged on the outer peripheral side of the central reinforcing piece in a surrounding mode, and a wrapping tape wrapped on the outer peripheral side of the stranded layer; the central reinforcing piece is composed of a torsion-free steel wire rope at the central position and an elastic inner cladding wrapped outside; the stranded layer adopts a tight structure formed by at least one high-performance optical fiber unit arranged around the elastic inner cladding and a filled prestress filling wire.
Further, the outside parcel of band has the oversheath.
Further, a steel wire armor layer is arranged between the wrapping tape and the outer sheath in a surrounding mode.
Furthermore, the optical fiber unit adopts a single-mode or multi-mode optical fiber cable with high fatigue strength, and the prestressed filling wire adopts prestressed steel wires.
Further, the wrapping tape adopts a layer of longitudinally wrapped water-blocking tape or two layers of oppositely-wrapped water-blocking tapes.
Furthermore, the steel wire armor layer adopts two layers of forward and reverse back-twist armor of prestressed steel wires.
Further, the outer sheath is a protective sheath layer formed by extruding a halogen-free flame retardant material.
Compared with the prior art, the utility model following beneficial effect including:
1. the length of the plug-and-play elevator traveling prefabricated optical cable is determined according to practical application, and the two-end connectors are prefabricated in a factory, so that the plug-and-play of the optical cable and communication system equipment after the optical cable is installed is realized, and the construction and the operation maintenance become simple and reliable;
2. the optical cable body adopts a tightly-covered high-performance optical fiber unit of an anti-fatigue high-strength optical fiber, and the optical fiber is wound on the central reinforcing piece at a certain pitch and at intervals between the twisted direction and the filling line, so that the optical fiber obtains enough extra length; all force bearing elements in the cable adopt torsion-free steel wire ropes and prestressed high-strength steel wires, torsion is not generated under the conditions of bearing tension and repeated bending, and the optical fibers are not stressed after the force bearing elements are stretched due to stress and are extended due to creep, so that the transmission performance and the service life of the optical fibers are ensured, and the optical fibers in the cable can be used for communication, information acquisition and sensing;
3. the optical cable comprises a light optical cable and a heavy optical cable, wherein the light optical cable can be attached to the conventional elevator trailing cable without the optical communication unit, the heavy optical cable can be independently used, and the two optical cables can be used as the optical communication unit of some photoelectric composite cables.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an overall structure diagram of a plug-and-play elevator traveling prefabricated optical cable of the present invention;
fig. 2 is a cross-sectional view of an optical cable body according to embodiment 1 of the present invention;
fig. 3 is a cross-sectional view of an optical cable body according to embodiment 2 of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-optical cable body, 2-optical fiber connector, 21-torsion-free steel wire rope, 22-elastic inner cladding, 23-optical fiber unit, 24-prestress filling wire, 25-wrapping tape, 26-outer sheath, 27-prestress steel wire and 3-connector.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "both ends", "center", "peripheral side", "around", "outside", and the like indicate positional or positional relationships, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Specific example 1:
referring to fig. 1-2, the plug-and-play prefabricated optical cable for elevator traveling of the present invention, specifically, the embodiment is a light optical cable, which is used for being attached to an existing elevator traveling cable without optical fiber communication unit, and the optical cable can be used as a communication unit or a cable core of other elevator traveling optical-electrical composite cables, and includes an optical cable body 1 and optical fiber connectors 2 with interfaces 3 connected to two ends of the optical cable body 1, and the optical fiber connectors are prefabricated in a factory;
the optical cable body 1 comprises a central reinforcing piece positioned in the central position, a stranded layer arranged on the outer peripheral side of the central reinforcing piece in a surrounding mode, and a wrapping tape 25 wrapping the outer peripheral side of the stranded layer; the central reinforcing piece is composed of a torsion-free steel wire rope 21 at the central position and an elastic inner cladding 22 wrapped outside; the stranded layer adopts a tight structure consisting of at least one high-performance optical fiber unit 23 and a filled prestress filling wire 24 which are arranged around the periphery of the elastic inner cladding layer 22; the optical fiber unit 23 adopts a single-mode or multi-mode optical fiber cable containing optical fibers and high in fatigue resistance, and the prestress filling wire 24 adopts prestress steel wires; the non-twisted steel wire rope 21 ensures that torsion is not generated under the conditions of bearing tension and repeatedly bending; the elastic inner cladding 22 is round and is used for winding optical fibers and buffering twisting and tensile stress; the surface of the single-mode or multi-mode optical fiber cable with high fatigue resistance is provided with a precoating layer; the prestress filling wires 24 are prestress wires, are distributed at intervals with the optical fiber units 23 and are twisted on the central reinforcing member, the reasonable twisting direction and twisting pitch enable the optical fiber units to generate enough excess optical fiber length, and the optical fibers are still not stressed after the bearing elements are stretched under stress and elongated under creep deformation; the optical fiber unit 23 and the prestress filling wire 24 are subjected to SZ twisting, and sufficient extra length of the optical fiber is obtained while the twist is removed;
in this embodiment, the inner elastic layer 22 is made of TPE elastic material.
In this embodiment, the high-performance optical fiber units 23 are provided with four, specifically single-mode optical fiber cables, specifically anti-fatigue high-strength colored pre-coated optical fibers, and have a round tight-wrapping structure; the single prestressed steel-filled wire 24 is circular, the single wire diameter of the single prestressed steel-filled wire is slightly larger than the diameter of the high-performance optical fiber unit 23, and the coverage rate of the stranded layer formed by the single prestressed steel-filled wire on the circumference of the cross section of the central reinforcing member is not less than 95%. When the optical cable requires a large number of optical fiber cores, a plurality of high performance optical fiber units 23 may be disposed in the stranded layer and spaced apart from the filling line or diagonally distributed, for example, in fig. 2, spaced apart and symmetrically distributed.
Four prestressed filling lines 24 are also provided, spaced apart from the optical fiber units 23 and pressed against each other, and press against the elastic inner cladding 22 and the wrapping tape 25.
The outer sheath 26 wraps the bag belt 25, the outer sheath 26 is a protective sheath layer formed by extruding halogen-free flame-retardant materials, the protective sheath layer is round or non-round, and the round extruded protective sheath layer is adopted in the specific embodiment; the wrapping tape 25 adopts a longitudinal wrapping water-blocking tape or two layers of wrapping water-blocking tapes in opposite directions; in this embodiment, a layer of longitudinally wrapped water-blocking tape is used for shaping the optical fiber unit and the filler wire strand layer, and has a water-blocking effect.
The optical fiber unit 23 in the optical cable body 1 has enough extra length, the force bearing elements are all anti-twisting structures, torsion is not generated under the conditions of bearing tension and repeated bending, the optical fiber is still not stressed after the force bearing elements stretch due to stress and creep elongation, the transmission performance and the service life of the optical fiber are ensured, and the optical fiber in the cable can be used for communication, information acquisition and sensing.
The length of the optical cable is given by the elevator engineering design, and the manufacturing length of the optical cable does not allow negative tolerance; the optical cable body 1 and the optical fiber connector 2 are usually installed in a factory, and can also be installed by professional personnel on site under special conditions, and the optical fiber connector 2 is butted with an optical fiber connector of the same type on communication system equipment through the interface 3, so that plug and play are realized.
In this embodiment, the optical attenuation coefficient of the cable is: the multimode fiber is less than or equal to 3.5dB/km (850nm) and less than or equal to 1.5dB/km (1310 nm); the single-mode optical fiber is less than or equal to 0.5dB/km (1310nm) and less than or equal to 0.4dB/km (1550 nm). Connector insertion loss: 4/8 core is less than or equal to 0.6 dB; 12/24 core is less than or equal to 0.8 dB.
A twisted layer composed of high-performance optical fiber units and filling wires is externally wrapped with a single-layer water-blocking tape longitudinally (without torsional stress) or a double-layer water-blocking tape forward and backward (with untwisting stress) to form a wrapping tape 25, and then a sheath 26 is extruded. If the cable is attached to a conventional elevator trailing cable without an optical communication unit, the sheath 26 is preferably a halogen-free flame retardant material and may be round or otherwise shaped.
Specific example 2:
referring to fig. 1 and 3, a plug-and-play elevator traveling prefabricated optical cable, specifically a heavy optical cable, of the utility model can be independently installed and applied, and can also be used for additional applications, and the difference with respect to the specific embodiment 1 is:
wherein, encircle between band 25 and the oversheath 26 and be provided with the steel wire armor, band 25 adopts two-layer opposite direction around the package water-blocking tape in this embodiment, and the steel wire armor adopts two-layer prestressing wire 27's positive and negative back-twist armoring for the torsion of two sets of hank layers of the confucian classics of taking off.
Has the beneficial effects that:
1. the length of the plug-and-play elevator traveling prefabricated optical cable is determined according to practical application, and the two-end connectors are prefabricated in a factory, so that the plug-and-play of the optical cable and communication system equipment after the optical cable is installed is realized, and the construction and the operation maintenance become simple and reliable;
2. the optical cable body adopts a tightly-covered high-performance optical fiber unit of an anti-fatigue high-strength optical fiber, and the optical fiber is wound on the central reinforcing piece at a certain pitch and at intervals between the twisted direction and the filling line, so that the optical fiber obtains enough extra length; all force bearing elements in the cable adopt torsion-free steel wire ropes and prestressed high-strength steel wires, torsion is not generated under the conditions of bearing tension and repeated bending, and the optical fibers are not stressed after the force bearing elements are stretched due to stress and are extended due to creep, so that the transmission performance and the service life of the optical fibers are ensured, and the optical fibers in the cable can be used for communication, information acquisition and sensing;
3. the optical cable has two types of light and heavy, the light optical cable can be attached to the conventional elevator trailing cable without optical communication units, the heavy optical cable can be used independently, and the two types of optical cables can be used as optical communication units of certain photoelectric composite cables.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms 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 its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a prefabricated optical cable of elevator retinue of plug and play, includes optical cable body (1) and connects in optical cable body (1) both ends have fiber connector (2) of interface (3), its characterized in that:
the optical cable body (1) comprises a central reinforcing piece positioned in the central position, a stranded layer arranged on the outer peripheral side of the central reinforcing piece in a surrounding mode, and a wrapping tape (25) wrapping the outer peripheral side of the stranded layer; the central reinforcing piece is composed of a torsion-free steel wire rope (21) at the central position and an elastic inner cladding (22) wrapped outside; the stranded layer adopts a compact structure consisting of at least one high-performance optical fiber unit (23) arranged around the elastic inner cladding (22) and a filled prestress filling wire (24).
2. A plug-and-play elevator traveling prefabricated optical cable according to claim 1, characterized in that the wrapping tape (25) is externally wrapped with an outer sheath (26).
3. A plug-and-play elevator traveling prefabricated optical cable according to claim 2, characterized in that a steel wire armor layer is arranged between the wrapping tape (25) and the outer sheath (26) in a surrounding manner.
4. Plug-and-play elevator retinue-prefabricated optical cable according to claim 1, characterized in that said optical fiber unit (23) uses single-mode or multi-mode fiber cable with high fatigue resistance, and said pre-stressed filler wires (24) use pre-stressed steel wires.
5. The plug-and-play elevator traveling prefabricated optical cable according to claim 1, characterized in that the wrapping tape (25) is a longitudinal wrapped water-blocking tape or two oppositely wrapped water-blocking tapes.
6. A plug-and-play elevator traveling prefabricated optical cable according to claim 3, characterized in that said steel wire armor layer is forward and reverse back twist armor of two layers of prestressed steel wires (27).
7. A plug-and-play elevator follow prefabricated optical cable according to claim 3, characterized in that said outer sheath (26) is a protective sheath layer extruded from halogen-free flame retardant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488475.XU CN217238479U (en) | 2022-03-08 | 2022-03-08 | Plug-and-play elevator traveling prefabricated optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220488475.XU CN217238479U (en) | 2022-03-08 | 2022-03-08 | Plug-and-play elevator traveling prefabricated optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217238479U true CN217238479U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220488475.XU Active CN217238479U (en) | 2022-03-08 | 2022-03-08 | Plug-and-play elevator traveling prefabricated optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217238479U (en) |
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2022
- 2022-03-08 CN CN202220488475.XU patent/CN217238479U/en active Active
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