5125results about "Fibre mechanical structures" patented technology

The invention relates to an anti-ant large-core-number fiber ribbon cable comprising a cable core and an outer sheath. The cable core includes loose tubes; and fiber ribbons are sleeved inside the loose tubes. The outer sheath is an outer nylon sheath; and a non-metallic reinforcement layer is arranged between the outer sheath and the cable core. According to the anti-ant large-core-number fiber ribbon cable provided by the invention, with the outer nylon sheath, ants can not bite the sheath, so that the damages on the optical cable by ant biting in a pipe at an area with a serious anti problem are prevented, the normal state of the cable is ensured, and the application region of the cable is extended. The cable based on a simple and reasonable structure has advantages of small cable diameter, high fiber density, large fiber capacity, and low duty ratio and can be laid in a pipe conveniently; and the bending performance is good. During branched connection, 4 to 24 fibers can be melted once, so that the construction time is saved and the manpower cost is lowered, and the construction efficiency is improved. On the basis of the full drying type dielectric structure, branched connection is realized conveniently and usage becomes convenient.

The invention discloses a high-strength directly-buried optical cable and a preparation method thereof. Comprising at least one reinforcing piece, at least one cable core, a water-blocking tape layer, an inner protective layer, an armor layer and a high-strength outer sheath, wherein the cable core surrounds the reinforcing piece, is twisted and is filled with water-blocking cable paste; the water-blocking tape layer wraps the cable core; the inner protective layer wraps the water-blocking tape layer; wherein the cable core is composed of a loose tube filled with water-blocking fiber paste and at least one light-guide fiber accommodated in the loose tube; wherein the high-strength outer sheath is prepared from the following raw materials in parts by weight: 80 to 85 parts of high-density polyethylene, 15 to 20 parts of nylon 612, 8 to 12 parts of compatilizer, 15 to 20 parts of modified silicon dioxide, 1 to 3 parts of antioxidant and 0.7 to 1.1 parts of lubricant. The high-strength directly-buried optical cable has excellent high strength, aging resistance and wear resistance, the service life of the optical cable is remarkably prolonged, and the transmission reliability of the optical cable is remarkably improved.

The invention discloses a windable optical cable belt and a manufacturing method thereof, and the manufacturing method comprises the steps: distributing a plurality of parallel optical fibers in the same plane, so as to form an optical cable belt; a dispensing valve is adopted to carry out dispensing and bonding on the two adjacent optical fibers, intermittent dispensing is carried out in the first direction at a first preset interval so as to form bonding parts, and the two adjacent bonding parts of the optical cable belt in the second direction are distributed at a second preset interval in the first direction; and curing the bonding part of the optical cable tape, so that the upper surface of the cured bonding part is sunken downwards, and the lower surface of the cured bonding part is sunken upwards. According to the optical fiber manufacturing method, the adjacent optical fibers are bonded in a manner of carrying out interval dispensing at the first preset interval in the first direction, and the adjacent bonding parts in the second direction have the second preset interval in the first direction, so that compared with an existing optical fiber dipping method, the method has the advantages that the crimpability of an optical cable belt can be effectively improved; and the glue consumption can be reduced.

The invention relates to a polyethylene and silica gel mixed material, a preparation method thereof and application of the polyethylene and silica gel mixed material in a composite optical cable silicon core tube. The composite material comprises the following components in parts by weight: high-density polyethylene, an ethylene-siloxane copolymer elastomer, a maleic anhydride grafted polyolefin elastomer, hydroxylated nano silicon dioxide, liquid paraffin, a crystallization nucleating agent, an ultraviolet light absorber, an auxiliary stabilizer, a processing aid and color master batch. The liquid paraffin is formed by blending dual-molecular-weight paraffin with different carbon chain lengths, and part of the liquid paraffin is grafted and modified by polybutylene so as to enhance the anchoring capacity of the lubricating phase; in addition, nano cellulose crystals grafted by a PEG-PCL (Polyethylene Glycol-Polycaprolactone) block copolymer are introduced, so that the dimensional stability and the interface structure integrity of the material are synergistically enhanced. The composite material has excellent low friction, thermal oxidation stability, creep resistance and ultraviolet aging resistance, and is suitable for preparation of a high-performance composite optical cable silicon core tube.

A telecommunications tray (50 / 300 / 400 / 600 / 900 / 1100 / 1200 / 1400 / 1800) is configured for mounting to a telecommunications fixture. The tray (50) includes a removably mounted telecommunications module (100 / 200 / 302 / 402 / 700 / 800 / 1000 / 1100 / 1300 / 1900 / 2000) that defines a body that is enclosed by a cover (1102 / 1320 / 1924) to define an interior. The module (100 / 200 / 302 / 402 / 700 / 800 / 1000 / 1100 / 1300 / 1900 / 2000) includes radius limiters (902 / 1356 / 1358 / 1954) within the interior for managing cables and defines connection locations for inputting and / or outputting signals via cables for processing within the module (100 / 200 / 302 / 402 / 700 / 800 / 1000 / 1100 / 1300 / 1900 / 2000), the telecommunications module (100 / 200 / 302 / 402 / 700 / 800 / 1000 / 1100 / 1300 / 1900 / 2000) movably mounted to the tray (50 / 300 / 400 / 600 / 900 / 1100 / 1200 / 1400 / 1800).

A splice equipment assembly includes two routing paths along opposite sides of a splice region. The two routing paths do not cross. The two routing paths do not extend circumferentially around the splice region. The two routing paths provide adequate slack to allow a splice tray to be removed from the splice region and moved to a workstation outside of the splice equipment assembly. Multiple splice equipment assemblies can be mounted to the same rack (e.g., at a front and rear of the rack).

The invention discloses a temperature and humidity monitoring and dehumidification integrated device for an optical cable connector box of an electric power tower, and relates to the technical field of electric power engineering, the temperature and humidity monitoring and dehumidification integrated device comprises an optical cable connector box body, and a controller is arranged on the outer surface of the optical cable connector box body close to the edge of one side. According to the temperature and humidity monitoring and dehumidification integrated device for the optical cable connector box of the electric power tower, when saturated silica gel enters the communicating pipe, moisture in the silica gel is evaporated out by heating the silica gel, and is discharged through the air outlet pipe until the moisture in the silica gel is completely discharged; when silica gel needs to be added into the optical cable connector box body again for dehumidification, the electric push rod is started, the piston moves to the position, with the inner diameter larger than the outer diameter of the piston, in the drainage tank, and then the silica gel moves to the interior of the limiting sleeve. Therefore, the interior of the optical cable connector box body can be dehumidified again.

The invention discloses a ship-shore safety connection system with efficient communication and safety protection, and particularly relates to the technical field of electric power and data connection of ships and shore bases, which comprises a medium-voltage composite optical fiber shore power cable, a dual-system electrical transmission system, a third-party linkage control center and a layered insulation monitoring module, the medium-voltage composite optical fiber shore power cable adopts a double-layer anti-torsion protective sleeve and an anti-electrostatic shielding layer, a double-system electrical transmission system is integrated with a broadband voltage self-adaptive module and a high-speed optical fiber communication repeater, the system realizes ship-shore potential difference monitoring and redundancy switching through a three-way data link, and a layered insulation monitoring module is used for positioning a fault point in real time. Besides, an environment reinforcing assembly, a multi-stage early warning mechanism and a communication line self-healing function are further arranged, the problems that a traditional system is poor in compatibility, low in communication efficiency and insufficient in safety protection are solved, and the system is suitable for efficient and safe connection between the ship and the shore base.

The invention provides a fiber distribution module, a fiber distribution device and a fiber moving control method, and relates to the technical field of wiring. The fiber distribution module comprises a wiring turntable, an optical fiber adapter assembly, a plugging assembly and a transition plugging assembly, wherein at least one connecting part is defined and formed on the peripheral side of the wiring turntable; the optical fiber adapter assembly comprises at least two optical fiber adapter groups, and each optical fiber adapter group comprises at least two optical fiber adapters; the plugging assembly comprises a clamping piece, a first driving piece and a second driving piece, the first driving piece is connected with the clamping piece to drive the clamping piece to move in the radial direction and the axial direction of the wiring turntable, the second driving piece is connected with the first driving piece to drive the first driving piece and the clamping piece to rotate around the central axis, and the clamping piece is used for clamping an optical fiber plug; the transition plugging assembly can be in plugging cooperation with the optical fiber plug, and the transition plugging assembly is connected with the second driving member. According to the invention, the size can be reduced, and wiring can be realized in some environments with compact space sizes.

A communications panel includes a chassis receiving one or more tray arrangements that each support one or more cassettes. Each cassette carries a plurality of ports at which connections are made between front and rear plug connectors. Each tray arrangement includes guides along which the cassettes slidably mount. The guides and cassettes are configured to enable cassettes of various size to mount to the same tray without reconfiguring the guides.

Disclosed are a steel fiber composite intelligent bar with a sheathing optical cable embedded in an inner core of a rebar, and a fabrication method thereof. The steel fiber composite intelligent bar includes the sheathing optical cable, the rebar, a winding layer, and tightening sheaths, wherein the sheathing optical cable comprises a glass fiber core, a polyimide coating layer, and a polyurethane wrapping layer that are stacked sequentially from inside to outside; the rebar is provided with a notch groove along a length direction; and the sheathing optical cable is embedded in the notch groove in parallel; the winding layer is wound around an outer surface of the rebar, and the winding layer is made of an epoxy resin composite fiber; and the tightening sheaths comprise a first tightening sheath and a second tightening sheath which are sleeved at two ends of the winding layer, respectively.

The utility model relates to the technical field of communication equipment, in particular to an optical fiber fusion splicing module box which comprises a box body with an opening in the upper portion, a box cover detachably connected to the upper end of the box body to cover the opening, an adapter installed at the front end of the box body, an anti-disengaging end shell clamped at the front end of the box body and arranged on the adapter in a sleeving mode and a fusion splicing clamping base. The welding clamping seat can be connected to the inner wall of the box body in a turnover mode and is provided with a plurality of wire grooves for clamping and embedding cables. The welding clamping seat of the optical fiber welding module box can be connected to the inner wall of the box body in a turnover mode, the welding clamping seat can be turned over to be in a vertical state in the wiring process, occupied space is reduced, a worker can conveniently insert a wiring terminal of an optical fiber cable into a wiring port of an adapter, the flexibility and efficiency of optical fiber harness construction are improved, and the construction cost is reduced. After wiring is completed, the welding clamping seat is folded to be in a horizontal state, and the protective sleeve fixedly sleeved at the welding position of the cable is clamped in the wire groove.

The invention discloses an easy-to-tear butterfly-shaped optical cable for preventing an optical fiber from being excessively twisted, relates to the technical field of optical cables, and can effectively solve the problem that the performance of the butterfly-shaped optical cable is affected after the butterfly-shaped optical cable is excessively twisted in the prior art. The embodiment of the invention discloses an easy-to-tear butterfly-shaped optical cable for preventing excessive twisting of an optical fiber, which comprises a butterfly-shaped sheath and an optical fiber unit arranged in the butterfly-shaped sheath, an annular cavity is arranged in the middle of the butterfly-shaped sheath, and a protection assembly is sleeved on the optical fiber unit; the device further comprises a plurality of flexible traction pieces arranged in the annular cavity, one ends of the flexible traction pieces are fixed to the inner circumferential wall of the annular cavity, the other ends of the flexible traction pieces are fixed to the outer circumferential wall of the protection assembly, and the length of the flexible traction pieces in the straightened state is larger than the distance between the two ends of the flexible traction pieces.

The invention relates to the technical field of optical cable preparation, and discloses a high-corrosion-resistance rodent-damage-prevention self-supporting optical cable of a non-metal optical unit, which comprises the following steps of: performing surface activation on the non-metal optical unit to establish a controllable interface premise, and under the strict constraint of the premise, performing surface activation on the non-metal optical unit to obtain a rodent-damage-prevention non-metal optical unit; and setting process parameter windows of subsequent functional interface coating coating and curing, high-modulus rodent-damage-preventing material laying and sheath co-extrusion, and setting a process parameter window of subsequent functional interface coating coating and curing, high-modulus rodent-damage-preventing material laying and sheath co-extrusion. According to the invention, the high-modulus rodent-damage-preventing material laying is carried out in a sheath high-temperature extrusion process, and the high-modulus rodent-damage-preventing material is used as a heat-stable internal skeleton to normalize the flowing process of a molten sheath material; and the sheath material is promoted to form a physically deep coupled composite protection system around the skeleton when being cooled and cured, so that the corrosion resistance and the physical damage resistance are mutually enhanced in the manufacturing link, and the internal protection uniformity and the long-term service reliability of the optical cable are improved.

The utility model discloses a layer-stranded optical cable water-blocking ointment filling device, which comprises a base for the filling device, the top of the base is fixedly connected with a filling pump, an ointment box, an inflation assembly and a support plate, the top of the support plate is clamped with a filling assembly, and the output end of the filling pump is fixedly connected with a filling pipe. Through arranging an inflation assembly, a shell, a front baffle ring, a rear baffle ring, a front air bag, a front connector, a first barometer, a rear air bag, a filling pipe, a small air bag, a rear hose, an inner hose, a front hose and an optical cable body, during filling, the optical cable body is inserted into the shell, the filling pipe is inserted into the optical cable, and then the front air bag, the rear air bag and the small air bag are respectively inflated to expand; therefore, sealing is formed among the optical cable body, the filling pipe and the shell, connection is firm, side leakage is not prone to being generated, the filling effect is enhanced, optical cables with different diameters can be filled, and the universality of the device is improved.

The invention discloses a photoelectric composite aluminum alloy conductor aerospace cable and a preparation method, and belongs to the technical field of photoelectric composite cables, the cable comprises an optical fiber unit, a conductor unit, an insulating layer, an anti-electromagnetic unit and a sheath layer; the anti-electromagnetic unit is obtained by weaving double-layer metallized polyimide fibers; the double-layer metallized polyimide fiber sequentially comprises a polyimide fiber, a first metal coating and a second metal coating from inside to outside. The surface of the polyimide fiber is coated with modified polydopamine; the first metal coating is copper; and the second metal coating is silver and / or nickel. The double-layer metal coating can form a more compact metal outer layer on the surface of the polyimide fiber, the requirements of the severe external environment of aerospace are met, a conductive network with higher stability is formed, and the electromagnetic shielding effect is remarkably improved. Moreover, the polyimide fiber is coated with a polydopamine coating, so that the fiber is not damaged, and the overall high and low temperature resistance and radiation resistance can be improved.

A bladed chassis system facilitates installation of the bladed chassis system and replacement of the blades at the chassis. For example, a front panel of the blade can be opened either upwardly or downwardly at the discretion of the user. Blades can be inserted and removed from the front and / or the rear of the bladed chassis system at the discretion of the user. Cables can be routed to the rear of the chassis system from either of two sides at the discretion of the user. The blades carried by the chassis have fiber management trays that can be rotationally oriented in any desired rotational position at the discretion of the user.

The invention belongs to the related field of optical communication transmission technology, and discloses a telescopic butterfly-shaped optical cable, which comprises a main body sheath, an optical fiber, a flat steel wire and a V-shaped tearing opening, and is characterized in that the whole cross section of the butterfly-shaped optical cable is of a square structure with a certain length-width ratio; the optical fiber is arranged in the main body sheath and is wrapped by a single sleeve or double sleeves; the V-shaped tearing openings are kept symmetrically arranged on the long sides of the square structure, the flat steel wires are kept symmetrically arranged on the corners or the side portions of the square structure, and the flat steel wires are correspondingly used for storing redundant parts of optical fibers in a coil mode while having the function of a reinforcing piece. According to the butterfly-shaped optical cable, on the basis that an existing suspension wire steel wire structure is completely cancelled, the weak problem of the tearing opening part is effectively avoided, it is ensured that the butterfly-shaped optical cable has the needed mechanical strength, and the optical fiber containing space of the butterfly-shaped optical cable is improved; and meanwhile, reliable storage of internal standby optical fibers can be realized, and other functions such as rapid switching can be supported.

A cable guide includes a base for positioning the cable guide on a base surface of an internal area of a telecommunications chassis. The base is generally planar. The cable guide includes a plurality of arms and at least one arm of the plurality of arms is flexible. The cable guide includes a plurality of cable channels that are defined by the plurality of arms. The plurality of cable channels each receive a plurality of furcation tubes. Each of the plurality of cable channels is configured to allow furcation tubes to move within each of the plurality of cable channels. Each cable channel has an open position and a closed position. When in the open position, furcation tubes can be loaded and unloaded into and out of the cable channel. When in the closed position, furcation tubes are restricted from being removed from the cable channel.

An enclosure for accommodating splicing between cables is disclosed. The enclosure can include a housing containing a frame (e.g., a tray) to which the cables can be affixed. The housing can have an elongate in-line configuration, a triangular configuration, or other configurations. Cable reversing configurations and moveable adapter configurations are also disclosed.

The invention provides a device and method for replacing gas in a hollow-core optical fiber, and the device comprises a high-pressure gas chamber which is provided with at least one hollow-core optical fiber interface and at least one gas inlet / outlet, the hollow-core optical fiber interface is used for being connected with a gas path at one end of the hollow-core optical fiber, and the other end of the hollow-core optical fiber is sealed; the gas path is connected with the gas inlet and outlet; the vacuum pump is connected with the gas inlet and outlet through a gas path and is used for extracting residual gas in the hollow-core optical fiber; and the high-pressure gas source is connected with the gas inlet and outlet through a gas path and is used for filling high-pressure gas into the hollow-core optical fiber. Gas in the hollow-core optical fiber can be exhausted and replaced, the air pressure state in the hollow-core optical fiber is improved, and the signal transmission performance and the long-term use stability of the optical fiber are enhanced.

A communications panel includes a chassis receiving one or more tray arrangements that each support one or more cassettes. Each cassette carries a plurality of ports at which connections are made between front and rear plug connectors. Each tray arrangement includes guides along which the cassettes slidably mount. The guides and cassettes are configured to enable cassettes of various size to mount to the same tray without reconfiguring the guides.

An intermittently coupled-type optical fiber ribbon includes a plurality of optical fibers arranged in parallel and intermittently coupling portions formed by coupling parts between the adjacent optical fibers with a resin. In the coupling portions, the resin is provided on one side surface and the other side surface of the optical fiber ribbon. When an average of maximum values of thicknesses TF of the coupling portions on the one side surface is set as TFave and an outer diameter of each optical fiber is set as D, D / 4≤TFave≤D / 2. When an average of maximum values of thicknesses TB of the coupling portions on the other side surface is set as TBave, TBave<TFave.

The invention provides a light super-soft fire-resistant flame-retardant optical cable and a preparation method thereof. The light super-soft fire-resistant flame-retardant optical cable sequentially comprises a high-temperature-resistant optical fiber, a filling layer, a flame-retardant loose tube, a reinforcing layer, a heat insulation layer and a fire-resistant flame-retardant layer from inside to outside, the fireproof flame-retardant layer comprises the following preparation raw materials in percentage by mass: 55-65% of plasma activated mineral powder, 25-35% of a thermoplastic elastomer base material subjected to irradiation crosslinking treatment, 8-12% of a phosphorus-nitrogen intumescent flame retardant and 1.5-2.5% of a silane coupling agent; the nano mineral powder comprises a magnesium aluminum silicate compound, and the thermoplastic elastomer matrix comprises a blend of SEBS (Styrene-Ethylene-Butylene-Styrene) and TPU (Thermoplastic Polyurethane). The fire-resistant flame-retardant layer forms a ceramic protection layer at high temperature to perform fire-resistant flame-retardant protection and prevent heat transfer, and meanwhile, the heat insulation layer is matched to further prevent heat from being transferred to the cable core, so that the performance of the optical cable is ensured not to be influenced.

The invention belongs to the technical field of optical fibers, and relates to an optical fiber ribbon easy to optically identify and detect and a manufacturing method. The optical fiber ribbon comprises a plurality of optical fibers and an adhesive tape, the plurality of optical fibers are arranged side by side and are in line contact in sequence, and the plurality of optical fibers are connected through the adhesive tape to form the optical fiber ribbon; the projection of the adhesive tape in the thickness direction of the optical fiber ribbon comprises a first corrugated line and a second corrugated line, the first corrugated line and the second corrugated line extend in a corrugated shape in the length direction of the optical fiber ribbon, and the two ends of the first corrugated line are connected with the two ends of the second corrugated line at the contact line of the optical fiber. And a corrugated identification loop is defined. The optical fiber ribbon provided by the invention has the effect of being easily optically identified and detected.

The invention provides a pre-connector, an optical cable assembly and communication equipment. The pre-connector comprises a connector assembly and an outdoor assembly. The connector assembly comprises an insertion core base and an insertion core capable of sliding relative to the insertion core base. Wherein the insertion core base is used for fixing an optical cable, and the insertion core is used for being connected with an optical fiber, inserted into the insertion core base, of the optical cable; therefore, the optical fiber can be connected with communication equipment through the insertion core. The outdoor assembly comprises a main shaft which is sleeved on the insertion core base and is fixed with the insertion core base. And the handle sleeve is sleeved on the main shaft. The outdoor assembly serves as a connecting piece to be detachably and fixedly connected with the communication equipment so as to provide locking force when the communication equipment is connected. According to the pre-connector provided by the invention, the insertion core base is directly connected with the optical cable, and the handle sleeve and the main shaft are made into a modularized structure, so that when the pre-connector is assembled, only an outdoor assembly needs to be sleeved on the optical cable, and the assembly of the pre-connector is facilitated.

The invention discloses a hollow-core microstructure optical fiber ribbon and a preparation method thereof. The hollow-core microstructure optical fiber ribbon comprises a plurality of hollow-core microstructure optical fibers which are arranged side by side; the plurality of hollow-core microstructure optical fibers have the same end face structure and are coated with ribbon combining resin for fixing the positions of the hollow-core microstructure optical fibers; the plurality of anti-resonance microstructure units are distributed on the inner side of the glass sleeve; the glass sleeve is externally coated with the coating on the outermost side; the outermost coating is provided with at least one pair of parallel positioning surfaces; and the positioning surfaces of the adjacent hollow-core microstructure optical fibers are mutually registered and spliced, so that the plurality of hollow-core microstructure optical fibers which are arranged side by side are fixed in the ribbon combining resin in the same direction. According to the hollow-core microstructure optical fiber ribbon provided by the invention, the orientation of the hollow-core microstructure optical fiber is positioned through the non-circular optical fiber coating, and the optical fibers are arranged side by side through the parallel positioning surface, so that the end face orientations of all hollow-core structure optical fibers in the optical fiber ribbon are consistent, and therefore, the welding efficiency is improved, and the welding loss is reduced.

A resin composition for optical fiber coating contains a photopolymerizable compound and a photopolymerization initiator, in which the photopolymerizable compound contains epoxy di(meth)acrylate having a bisphenol skeleton and alkylene oxide-modified tri(meth)acrylate, and a content of the alkylene oxide-modified tri(meth)acrylate is 0.5% by mass or more and less than 40% by mass based on the total amount of the photopolymerizable compound.

The invention relates to the technical field of optical cable traction equipment, in particular to optical cable laying traction equipment. The device comprises a traction machine, a plurality of pipelines and a plurality of supporting units, a plurality of optical cable bodies can be laid at the same time, and the optical cable bodies and the steel cables are separated by arranging the supporting discs and the supporting rings, so that the problem of abrasion caused by mutual friction between the optical cable bodies and the steel cables and between the optical cable bodies and pipelines in the traction process is solved. Besides, as the optical cable bodies and the steel cable are clamped by the supporting disc and the supporting ring, the pulling force of the traction machine is equally distributed to the multiple optical cable bodies in the laying process, compared with the prior art, the traction force borne by the optical cable bodies is smaller, in addition, the structure can only pull the steel cable, and the operation is convenient. The optical cable body is only clamped by the supporting disc and the supporting ring and is not subjected to extra traction force of a traction machine, the problem that the optical cable body is damaged due to too large traction force is solved, the integrity of laid cables is guaranteed, and the laying effect is guaranteed.

Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end. The optical connectors disclosed may be tunable for improving optical performance and may also include a spring for biasing the ferrule to a forward position as desired.