366results about How to "Small bending radius" patented technology

A thin format crush resistant electrical cable that includes at least one bundle, having each bundle comprising a central conductor, an insulator that encapsulates the central conductor, a shielding that encapsulates the insulator, and a jacket that encapsulates the shielding wherein the jacket is crush resistant and thin format in cross section wherein a height of the jacket is smaller than a width of the jacket in cross-section and which enables a small bending radius. One or more embodiments include a small coaxial cable with width less than the jacket height in which the coaxial cable resides. Additional form fitting elements may be utilized as one or more additional bundles to provide for direction changes of the cable that may be implemented by bending the cable wherein the form fitting elements or wires maintain the form desired. The additional bundles may be conductive wire in any geometry.

Elevator, which includes at least an elevator car and a device for moving the elevator car, preferably along guide rails, and a counterweight, and one or more ropes, which rope connects the elevator car and the counterweight and is separate from the supporting function and passes around a diverting pulley mounted on the bottom end of the elevator hoistway. The rope comprises a power transmission part or a plurality of power transmission parts, for transmitting power in the longitudinal direction of the rope, which power transmission part is essentially fully of non-metallic material.

The invention belongs to the technical field of wire and cable, especially relating to wire and cable for a flexible composite towline and its manufacturing process, which comprises a conductor, cable materials and stuffing. The cable materials are set outside of the conductor and stuffing. The conductor is a copper conductor while the stuffing is polypropylene reticular tearing fiber. The said cable materials is the insulating compound and covering materials which is composed of polyvinyl chloride soft packing, butyronitrile compound and elastomer. The cable provided in the invention has the advantages of compact structure in reason with less space occupation, outstanding flexibility in continuous bending and low price. The successful development of the wire and cable for flexible composite towline supplies a gap in domestic production. Batch production of the cable not only creates a business opportunity for enterprises, but also drives the same trades to make batch production of the wire and cable for the flexible composite towline, which brings invaluable economic efficiency of enterprises and inestimable social benefit.

A rope for a hoisting device, which rope is belt-shaped and includes several load bearing members spaced apart in the width direction of the belt-shaped rope and embedded in a common coating, each of the load bearing members including several load bearing strings twisted together. The load bearing strings are made of composite material including reinforcing fibers embedded in polymer matrix.

The present invention discloses a 125 DEG C resistance low smoke non-halogen rubber-sheathed cable shielding material, including 100.00 shares of ethylene/ethylene acetic acid rubber, 60.00 to 100.00 shares of conductive carbon black, 40.00 to 60.00 shares of light calcium carbonate, 10.00 to 15.00 shares of plasticizer, 0.50 to 1.00 shares of active agent, 1.50 to 2.00 shares of anti-aging agent, 0.50 to 1.00 shares of technology operating agent, 1.50 to 2.00 shares of Di(tert-butylperoxyisopropyl)benzene, and 1.00 to 3.00 shares of triallyl isocyanurate. The rubber shielding cable material has characteristics of high temperature resistance, high conductivity, low smoke, non halogen, oil resistance, very plasticity and the like.

A heat exchanger includes a heat transfer tube group in which a plurality of first heat transfer tubes (3) through which a first fluid flows and a plurality of second heat transfer tubes (4) through which a second fluid that exchanges heat with the first fluid flows are arranged alternately while being in contact with each other. The heat transfer tube group is formed in a spiral shape by being wound in X direction perpendicular to Y direction in which the first heat transfer tubes (3) and the second heat transfer tubes (4) are arranged. A plurality of concave portions (3a) are provided on both sides, in the X direction, of an outer circumferential surface (31) of each of the first heat transfer tubes (3), along an extending direction of the first heat transfer tube (3). The plurality of concave portions (3a) form convex portions on an inner circumferential surface of the first heat transfer tube (3).

The invention belongs to the technical field of electrical wire and cable production processes, and particularly relates to a cleaning-type oil-resistant cable. Conductors (1) are copper conductors, the structures of the conductors adopt a first type or a second type, a cross-linked polyethylene insulating layer (2) is extruded on the conductors (1) respectively by applying a warm water cross-linking technology to serve as a cable core, an inner lining layer (3) is arranged outside the cable core, an armor layer (4) is armored by back-twist type galvanized fine steel wires, aluminum-plastic composite tapes are longitudinally coated and welded outside the armor layer (4) to form a water and tide blocking layer (5), and a flame-retardant jacket layer (6) made of a butyronitrile material is arranged at the outermost layer. With a double-layer co-extrusion mode to extrude, the arrangement of the high-strength water and tide blocking layer capable of longitudinally preventing tension in the overall cable and a process of double-layer co-extrusion protection layers, the cleaning-type oil-resistant cable has not only very strong resistance to abrasion and oil, but also better resistance to cleaning, thereby the quality stability of the oil-resistant cable is improved and a new technical field is developed for the development of the cleaning-type oil-resistant cable.

A three-dimensional joint structure of a support frame for vehicles can include two hollow profiles, of which the first hollow profile has at least one planar side and is cut through around its circumference except for a web lying in this planar side and is bent around this web. The second hollow profile has at least two planar sides that press against the ends of the first hollow profile resulting from the cutting and bending. The two hollow profiles are integrally joined to one another at the edge region of the ends.

The invention relates to a conductor wire core for a novel power cable, comprising an inner-layer molded wire and an outer-layer molded wire. The molded wires are produced by a molded wire filament drawing machine of which a molded wire filament drawing mold has the finish of less than 5; the single filaments of the inner-layer molded wire adopt round wires or combined round wires formed by combining 2 to 6 filaments with fan-shaped cross sections; the single filaments of the outer-layer molded wire are shaped like tiles and spirally stranded towards the same direction by using a frame-type strander; and the stranded wire core has a round cross section. The external diameter of the conductor wire core can be effectively reduced, and the consumption of outer-layer materials of the power cable can be saved. The conductor wire core has a smooth surface so that the risk of insulation breakdown is reduced. In addition, the rigidity and bend radius of the power cable are reduced so that the related power cable can be laid more conveniently.

The invention discloses a tape winding type optical unit optical cable and a manufacturing process thereof. The tape winding type optical unit optical cable comprises an optical unit and an outer sleeve layer, wherein the optical unit comprises a tape winding type optical fiber tape and an aramid fiber at the center, wherein a water-resisting material, a ribbon and a sleeve sequentially cover the tape winding type optical fiber tape. The manufacturing process comprises the following steps: 1, manufacturing a plurality of optical fibers into the optical fiber tape by a tape combining mold; 2, winding the optical fiber tape into a closed ring through a U-shaped molding trumpet mold and forming an optical fiber column by a sizing mold; covering the water-resisting material and binding the ribbon, and putting the optical fiber column into the sleeve to form the optical unit; and 3, preparing a tape winding type central pipe optical cable or a layer hinged type optical cable, and arranging a tape combining resin pressing-in pipe on the tape combining mold, wherein the optical fiber difference between the layers of the optical fiber column is 6, the outer diameter of the optical fiber column with 6-90 cores is 636-2332 microns and the layer quantity is 1-5, and the diameter of the prepared optical unit is 1.4-4.8mm. The sleeve has a smaller diameter and the prepared optical cable has light weight and small diameter; the bending radius of the prepared optical cable is small and the construction and pavement are easy; the net-shaped optical cable tape can be in primary fusion welding and the construction is convenient.

The invention discloses a laser bending forming method of a thin-walled tube and a special device used for realizing the method. The method adopts two laser beams to act on the thin-walled tube, wherein one laser beam is used for heating the thin-walled tube to soften the thin-walled tube and producing thermal stress along the thickness direction of the tube wall so as to cause the tube to bend and deform; the other laser beam forms a plasma on the surface of the tube, and further bends the thin-walled tube by the shock action produced by the plasma to obtain a fine grain structure. The special device for realizing the laser bending forming method of the thin-walled tube is composed of a laser generator system, a laser head system, a workbench system and a motion control system. By adopting the method, metal and alloy tubes made from steel, aluminum, copper, titanium and the like can be machined, which is a high-flexibility dieless forming technology.

A cable for high power transmission equipment, its structure from inside to outside is: inner conductor, first semiconductive wrapping shielding layer, inner conductor insulation, second semiconducting wrapping shielding layer, outer conductor, wrapping layer, Outer conductor insulation and outer sheath. The insulating layer of the inner conductor is made of silicon rubber; the outer conductor is braided with one or more layers of tinned copper wire; the insulating layer of the outer conductor is made of silicon rubber; the outer sheath layer is made of polyurethane. The manufacturing method of the cable comprises: 1) manufacturing the inner conductor; 2) manufacturing the first semiconductive wrapping shielding layer; 3) manufacturing the inner conductor insulating layer; 4) manufacturing the second semiconductive wrapping shielding layer; 5) manufacturing 6) manufacturing the wrapping layer; 7) manufacturing the insulating layer of the outer conductor; 8) manufacturing the outer sheath layer. In each step, a specific process method is adopted, so that the electrical and mechanical properties of the cable prepared by this method can meet or exceed the detection requirements, so that the cable for high-power transmission equipment can transmit high power safely and reliably, and has the advantages of light weight. , miniaturization, low temperature resistance, good flexibility, small bending radius and other excellent performances, suitable for high electric energy technical equipment.

The invention discloses a photonic integrated chip and an interference type fiber-optic gyroscope, and the photonic integrated chip can achieve high-density integration of functions of various photoelectric devices such as a waveguide coupler, a polarizer, a mode filter and a phase modulator on a thin film substrate through a photonic circuit structure. The four ports of the photonic integrated chip are placed on the same side of the chip, so that polarization crosstalk or parasitic phase errors caused by substrate radiation mode light waves formed by an asymmetric mode and polarization filtering are reduced, and the error influence on the performance of the fiber-optic gyroscope system is reduced. According to the interference type fiber-optic gyroscope, optical fibers are respectively placed at four ports of a photonic integrated chip and are respectively connected with a light source, a photoelectric detector and two ports of a fiber-optic ring, so that a light path structure of the interference type fiber-optic gyroscope is formed.

Provided is a high-temperature-resistant low-loss compound insulation coaxial cable. The high-temperature-resistant low-loss compound insulation coaxial cable is characterized in that a solid or stranded inner metal conductor (1), a polytetrafluoroethylene micropore compound insulation layer (2), an outer conductor (3) and a sheath layer (4) are arranged from inside to outside in sequence, the solid or stranded inner metal conductor (1) longitudinally extends along the central axis of the cable, the outer conductor (3) is formed by knitting metal or is additionally provided with an inner shielding layer, the sheath layer (4) is made of FEP copolymer or low-smoke halogen-free flame retardant polyolefin, and the inner metal conductor (1) and the outer conductor (3) are separated by the polytetrafluoroethylene micropore compound insulation layer (2); the polytetrafluoroethylene micropore compound insulation layer (2) is made of modified polytetrafluoroethylene organic-inorganic nanocomposites filled with nano polyhedral oligomeric silsesquioxanes (POSS). According to the coaxial cable, the dielectric constant of the insulation layer of the cable is reduced. A traditional solid polytetrafluoroethylene insulation dielectric constant is reduced to 1.2-1.6 from 2.1 and is reduced by about 24 percent to 43 percent, and the signal attenuation of cable high-frequency communication is reduced.

The invention discloses a method for manufacturing a small-pitch aluminum stranded wire. A lay plate with a proper size and a distance between the wire distributing plate and an inlet of a closing die are selected on a fork wire-stranding machine set; an angle between an aluminum wire which is led out of a wire hole on the external periphery of the lay plate and then enters the inlet of the closing die and a core wire which is led out of an axle tube and then enters the inlet of the closing die is between 45 and 63 degrees when the aluminum stranded wire on the outermost layer is stranded and is between 35 and 50 degrees when the aluminum stranded wires on the other layers are stranded; and the obtained lay ratio value of the outermost layer is between 3.5 and 4.5 and the lay ratio value of the other layers is between 6.5 and 8.5. The aluminum wire which is subjected to heat treatment is taken as a raw material; the ratio of a pitch of the cylindrical helix-shaped aluminum wire in each layer of the aluminum stranded wire to the diameter of a cylindrical surface on which the cylindrical helix-shaped aluminum wire on the layer is arranged is relatively small; the aluminum stranded wire is easily bent; the allowable bending radius is relatively small; and after being bent into small bends, the aluminum stranded wire does not bridle wire, deform or get out of a sleeve, and has a smooth, round and flat surface and a stable structure and is suitable for serving as the aluminum stranded wire for connecting electric contacts of power distribution equipment in a high-voltage substation and a high-voltage converter station.