3252results about "Textile cables" patented technology

The invention discloses a steel wire rod for a 2400-2460 MPa grade stress corrosion resistant prestressed steel strand, the steel strand and a production method. The steel wire rod comprises the following chemical components in percentage by weight: 0.90-0.97% of C, 0.6-1.2% of Si, 0.2-0.8% of Mn, 0.15-0.45% of Cr, 0.02-0.05% of V, 0.01-0.05% of Nb, less than 0.30% of Ni, less than 0.30% of Cu, less than 0.30% of Mo, less than or equal to 0.008% of S, less than or equal to 0.010% of P, less than or equal to 0.004% of N, less than or equal to 0.0020% of O and the balance of Fe and other inevitable impurities. By optimizing the chemical components and the production process of the wire rod, the strength of the prepared steel strand meets 2400-2460 MPa, the minimum stress corrosion value is 2.5 hours, the median value is 5 hours, and the stress corrosion resistance is obviously superior to that of an existing steel strand.

The invention discloses a steel wire rod for a 2300-2360 MPa grade stress corrosion resistant steel strand, the steel strand and a preparation method. The steel wire rod comprises the following chemical components in percentage by mass: 0.85-0.91% of C, 0.3-1.0% of Si, 0.2-0.8% of Mn, 0.15-0.45% of Cr, 0.02-0.05% of V, less than or equal to 0.008% of S, less than or equal to 0.010% of P, less than or equal to 0.004% of N, less than or equal to 0.0020% of O and the balance of Fe and other inevitable impurities. The steel wire rod has excellent strength and plasticity, the ultrahigh strength of 2300 MPa or above can be obtained through drawing with a small area reduction rate, surface damage and internal defects of the steel wire rod during subsequent drawing machining are reduced, and the stress corrosion index of the steel strand is improved.

The invention discloses a steel wire rod for a 2200-2260 MPa grade ultrahigh stress corrosion resistance prestressed steel strand, the steel strand and a production method of the steel strand, and the steel wire rod comprises the following alloy components in percentage by mass: 0.83-0.89% of C, 0.60-1.40% of Si, 0.20-0.80% of Mn, 0.15-0.50% of Cr, less than 0.30% of Cu, less than 0.30% of Ni, less than 0.30% of Mo, 0.01-0.05% of V, 0.001-0.05% of Nb, less than or equal to 0.008% of S, less than or equal to 0.010% of P, less than or equal to 0.0040% of N, less than or equal to 0.0020% of O and the balance of Fe and other inevitable impurities, through component design and a reasonable after-rolling controlled cooling process, the microstructure is refined, the sorbite rate is improved, high strength and plasticity are obtained with low carbon content, the drawing deformation can be reduced, material damage can be reduced, and the corrosion resistance of the steel strand is improved.

The invention discloses a steel wire rod for a 2500-2560 MPa grade stress corrosion resistant prestressed steel strand, the steel strand and a production method. The steel wire rod comprises the following chemical components in percentage by mass: 0.95-1.02% of C, 0.8-1.5% of Si, 0.5-1.0% of Mn, 0.25-0.45% of Cr, 0.02-0.08% of V, 0.01-0.05% of Nb, less than 0.30% of Ni, less than 0.30% of Cu, less than 0.30% of Mo, less than or equal to 0.008% of S, less than or equal to 0.010% of P, less than or equal to 0.004% of N, less than or equal to 0.0020% of O and the balance of Fe and other inevitable impurities. By optimizing the chemical components and the production process and refining the microscopic structure, the steel strand prepared from the steel wire rod has high tensile strength, the minimum stress corrosion value is 2.5 hours, the median value is more than 5 hours, and the steel strand shows excellent stress corrosion resistance.

The present invention addresses the problem of providing a pneumatic tire in which a reduction in tire performance is mitigated despite using polyamide fibers with low amide density. The solution is a pneumatic tire characterized by comprising a carcass layer (50), belt layers (60A, 60B), and a belt reinforcement layer (70A), wherein reinforcing cords (50-1, 70A-1) in the carcass layer (50) and / or the belt reinforcement layer (70A) contains polyamide fibers having an amide density of 14.0 or less, and (i) when a gauge thickness A from the outer circumferential surface on the tire inner-surface side of the reinforcing cords (50-1) of the carcass layer (50) to the tire inner surface is measured at 100 equally spaced points, the average of the gauge thickness A is 1.5 mm or less, or (ii) when a gauge thickness D from the outer circumferential surface on the tire outer-surface side of the reinforcing cords (70A-1) of the belt reinforcement layer (70A) to the tire outer surface is measured at 100 equally spaced points, the gauge thickness D is 6.0 mm or less at 80% of the measurement points or more.

A chain binder to connect and apply tension to chains, straps, or the like used to secure cargo on any type of platform or vehicle. The chain binder includes a lever body; a first side portion; a second side portion; and gears that effectuate two modes of operation. Namely, a power driven mode of operation or a manual lever mode of operation. Rotations of the gears causes hooks or connectors, via movement of eye-bolts, toward each other to place tension in the chains or strap. Opposite rotations of the gears causes hooks or connectors, via movement of eye-bolts, away from each other to relax the chains or strap. If components are damages during use, they may be replaced on an as-needed basis to reduce operational cost of the chain binder since the entire binder does not need replaced when only one component fails or is damaged.

The invention discloses an alloy for a 2230 MPa-grade high-corrosion-resistance steel strand, a wire rod, the steel strand and a method, and the alloy comprises the following components in percentage by mass: 0.89-0.93% of C, 1.20-1.40% of Si, 0.50-0.70% of Mn, 0.30-0.40% of Cr, 0.01-0.04% of V, less than or equal to 0.008% of S, less than or equal to 0.010% of P, less than or equal to 0.0040% of N, less than or equal to 0.0020% of O and the balance of Fe and other inevitable impurities. By optimizing the chemical component design and controlling the production process, the homogeneity of the steel is improved, the homogeneity of the wire rod is improved, the purity is improved, meanwhile, surface damage and internal defects during steel wire drawing machining are reduced, and therefore the stress corrosion index of the steel strand is improved.

The present invention belongs to the technical field of cable stranding, and specifically relates to a cable stranding machine, which includes a wire placement rack. A wire installation roller is rotatably installed on the wire placement rack. One end of the wire placement rack is rotatably connected to a wire pipe. A first gear, a protective wire placement disk, a guiding disk, and a stranding disk are sequentially and fixedly sleeved on the wire pipe. A die head is placed directly in front of the wire pipe. The first gear meshes with a second gear, and the end of the second gear is rotatably connected to the wire placement rack. By driving the guiding disk to rotate, the wire wheels in the six installation slots on the guiding disk can sequentially come into contact with the lubricating oil in the oil tank. The protective wire is lubricated by the wire wheels attached with lubricating oil, realizing the lubrication of the protective wire, reducing the friction between the wire wheels, the perforations and the protective wire, thereby greatly reducing the wear of the protective wire and improving the quality of cable manufacturing.

The invention discloses an electric capstan with multiple safety protections.The electric capstan comprises a capstan assembly, the capstan assembly comprises a cable body, two first protection assemblies are arranged at the bottom of the capstan assembly, and a second protection assembly is arranged between the outer surfaces of the two first protection assemblies; and two first protection assemblies. According to the electric capstan with the multiple safety protections, when a laser scanner detects that a certain position of the cable body is damaged, the upper portion of the damaged position is clamped and fixed through the four clamping blocks located on the upper portion, and then the four clamping blocks located on the lower portion are moved to the position below the damaged position to clamp and fix the cable body; multiple protection of the cable body in the electric capstan is achieved, and the problem that in the prior art, when a heavy object is lifted by a cable in the electric capstan, a certain section of the cable is damaged, the cable is broken, and the heavy object falls off is solved.

A strap device includes a strap having a first end and a second end. A first end component is coupled to the first end of the strap, and includes a first ring, a hook extending from an outer surface of the first ring, and a projection extending from the outer surface of the first ring. A portion of the projection, a portion of the outer surface of the first ring, and a portion of the outer surface of the hook define a channel. A second end component is coupled to the second end of the strap, and includes a second ring sized such that the second ring can pass through the first ring.

Some aspects of the disclosure relate to composite materials and cultivation systems with particular utility for use in aquaculture, for example cultivating various species of seaweed. The systems comprise at least one highly tortuous and often micro-fibrous material and at least one material having low tortuosity. These systems may be configured in a variety of shapes and associated with a number of different structures. Some of these composite materials and cultivation systems may be used in both direct and indirect seeding of macroalgae plants such as seaweed.

An apparatus for lubricating a surface of a tubular element for a medicament delivery device includes a rotatable drum comprising a tubular element receiving section configured to receive a tubular element to be lubricated. The drum is rotatable about its central axis. The apparatus comprises a device manipulator comprising a device handler at one end of a rod. The device handler is configured to receive a shaft portion of a device, and the rod moves a device through a received tubular element. The device manipulator is rotatable about the central axis of the rotatable drum.

A rope restraining and selective release device is provided that may be incorporated with a carabiner or other device for selective interconnection to an anchor. The device employs a selectively rotatable cam lever with a plurality of teeth and gripping geometry that cooperates with the corresponding geometry in a rope cradle to restrain a rope. Tension in the rope will allow it to pass through the device in one direction, but tension in the opposite direction will prevent rope movement through the device.

The utility model provides a tension adjusting device for a rope, which comprises a bottom plate, connecting holes are respectively arranged at four corners of the bottom plate, a tension mechanism is arranged in the middle of the top of the bottom plate, and the tension mechanism comprises a fixing block, a sliding groove, a sliding block, a threaded hole, a first U-shaped plate and a connecting rod which are arranged in the middle of the top of the bottom plate. A second U-shaped plate is jointly hinged to the tops of the two connecting rods, a two-way lead screw penetrating through the sliding block is arranged in the sliding groove, a self-locking mechanism is arranged at the left side end of the fixing block, and a connecting mechanism is arranged at the top of the second U-shaped plate. According to the tensioning adjusting device for the rope, the rope can be tensioned, the rope can be automatically tensioned, the self-locking mechanism is arranged, the situation that the rope slides after being tensioned is avoided, and therefore the overall using effect and the overall using efficiency of the device are improved.

An adjustable tethering system is disclosed that includes a primary line, a secondary line, and a capsule. The secondary line is wound about the primary line to form a frictional locking arrangement that resists translation of the secondary line along the primary line when the secondary line is tensioned. The capsule can be manipulated by a user to selectively release the frictional engagement between the primary and secondary lines, thereby enabling controlled transition of the system from a secured state to a state in which the secondary line can translate along the primary line.

Apparatus and methods for coupling a rope socket with an armored cable. The armored cable includes a conductor core having one or more cables for transmitting electrical and / or optical signals and at least one layer of armor wires wound around the conductor core. The rope socket includes a housing having an uphole end through which the armored cable extends into the housing and a downhole end through which the conductor core extends from the housing to a component of downhole equipment suspended in a wellbore by the armored cable. The armor wires are arranged inside of the housing so that they are spaced apart at least locally from the conductor core. A plastic material disposed within the housing fills interstices each defined by one or more surfaces of one or more of the conductor core, one or more of the armor wires, and the housing.

The invention discloses a wear-resistant cable material and a preparation method thereof, and belongs to the technical field of cables. Comprising the following raw materials in parts by weight: 80-100 parts of polypropylene resin, 12-28 parts of modified nano silicon dioxide, 15-25 parts of glass fibers and 3-5 parts of a lubricant. The prepared cable material takes polypropylene as a matrix, so that the cable material is endowed with certain wear resistance and mechanical property; the added glass fiber can further enhance the mechanical property of the cable material; nano-silica is modified, compared with common nano-silica, the nano-silica has better compatibility with a polypropylene matrix, wear resistance, oxidation resistance, flame retardance and mechanical properties of the cable material can be greatly enhanced, and the cable material is long and stable in performance and not prone to falling off; therefore, the prepared cable material is excellent in mechanical property, stable and efficient in wear resistance, oxidation resistance and flame retardance and has important application value in the technical field of cables.

The invention discloses a para-aramid (PPTA) fiber as well as a preparation method and application thereof, belongs to the technical field of high polymer materials, and solves the problem that a PPTA material in the prior art cannot meet the requirement of an ultrahigh-end application field on material modulus. The invention discloses a preparation method of para-aramid fiber, which comprises the following steps: uniformly dispersing a covalent organic framework material in concentrated sulfuric acid at room temperature to obtain a sulfuric acid solution of the covalent organic framework material; dissolving poly (p-phenylene terephthalamide) in a sulfuric acid solution of a covalent organic framework material to obtain spinning slurry; filtering, defoaming and spinning the spinning slurry in sequence; and carrying out purification operation to obtain the para-aramid fiber. According to the preparation method provided by the invention, the condensed state of a PPTA molecular chain is regulated and controlled by adding the COFs structural material, and intermolecular microdefects of the PPTA molecular chain are reduced, so that the strength and modulus of the para-aramid fiber are improved, and the application field of the para-aramid fiber is expanded.

A method of assembling a ratcheting strap adjuster comprises inserting a distal end of a rotation assembly through first and second apertures in respective first and second side plates of a frame, with a proximal end of the rotation assembly positioned proximate the first side plate and the distal end positioned proximate the second side plate. A captive member is movably connected to the second side plate proximate the distal end, wherein the captive member is movable between an engaging position and a releasing position, and wherein an engaging portion of the captive member is configured and arranged to selectively engage the distal end of the rotation assembly in the engaging position.

The invention discloses a flame-retardant and wear-resistant rope and a preparation method thereof, and belongs to the technical field of rope processing. The rope comprises a steel wire rope and a rubber sheath; wherein the rubber sheath comprises inner-layer rubber and outer-layer rubber; the inner-layer rubber is prepared from the following components: butadiene styrene rubber, white carbon black, an activating agent, a reinforcing agent, an anti-aging agent, gamma-mercaptopropyltriethoxysilane, a rubber adhesive, cobalt neodecanoate, sulfur and a vulcanization accelerator; the outer-layer rubber comprises the following components: butadiene styrene rubber, nitrile rubber, a flame-retardant wear-resistant reinforcing agent, white carbon black, an activating agent, a reinforcing agent, an anti-aging agent, an antistatic agent, sulfur and a vulcanization accelerator; the cross section of the rope is designed to be flat, the width of the rope is 30-250 mm, the thickness of the rope is 10-40 mm, and the mass of the rope per meter is 0.5-25 kg / m. The prepared rope has excellent flame retardance, wear resistance and antistatic performance, the adhesive force between the rubber layer and the steel wire is large, and the rope is not prone to being abraded or peeled off in long-term use.

The invention relates to the technical field of flexible steel wire ropes, and discloses a durability-enhanced flexible steel wire rope and a processing technology thereof.The durability-enhanced flexible steel wire rope comprises, by mass, 98-105 parts of an alloy steel wire core; 5 to 15 parts of a ceramic nano composite outer coating; 2 to 10 parts of a self-repairing polymer middle coating layer; 1-5 parts of a high-adhesion polymer inner coating; 1-8 parts of a polymer composite lubricant; 0.5 to 3 parts of nanometer lubricating particles; according to the process, through collaborative design of multiple functional coatings and a lubricating system and combination of a heat treatment process, the corrosion resistance and the wear resistance of the steel wire rope are remarkably improved, and the service life is remarkably prolonged. Through the collaborative design of the high alloy steel core, the ceramic nano coating, the self-repairing middle layer, the three-layer coating structure and the polymer nano lubricating system, the corrosion resistance, the fatigue resistance, the wear resistance and the self-repairing capacity of the steel wire rope are improved, the service life is prolonged, and the maintenance cost is reduced.

The invention discloses a cable connector which can be used for connection between two cables of any size without considering the diameter of the cables, and enables the two cables to rotate relatively so as to effectively release torsional stress and deformation on the cables, thereby facilitating reduction of space occupation of the cable connector. The cable connector comprises a connector body (3), a first connecting piece (6) and a second connecting piece (7). A first containing cavity (4) and a second containing cavity (5) are formed in the two ends of the connector body (3) respectively. The first connecting piece (6) is arranged in the first accommodating cavity (4); and one end of the first cable (1) passes through the first through hole and then is connected with the first connecting piece (6). The second connecting piece (7) is arranged in the second accommodating cavity (5); and one end of the second cable (2) passes through the second through hole and then is connected with the second connecting piece (7).

The invention discloses a rope forming process of a 2 / 7UT ultrahigh-strength steel wire cord, which comprises the following steps: (1) carrying out dry drawing on an 86C wire rod with the diameter of 5.5 mm to obtain a dry-drawn steel wire; (2) carrying out austenitizing treatment on the dry steel wire, carrying out electroplating and thermal diffusion to obtain a brass wire plated with a copper-zinc alloy on the surface, and taking up the brass wire on a spool; (3) wet-drawn steel wires are obtained through wet-drawing equipment, the wet-drawn steel wires are subjected to 23-pass drawing in total, a 21 'die, a 22' die and a 23 'die are additionally arranged in the 21 pass, the 22 pass and the 23 pass respectively, and the 21' die, the 22 'die and the 23' die are located between the corresponding current-pass die and the previous-pass die respectively; and (4) taking two wet drawing steel wires as an inner layer, taking seven wet drawing steel wires as an outer layer, and performing one-time twisting forming according to the same twisting direction and the same twisting length. Compared with 6 * 1 UT, the breaking force and the diameter are equivalent, the 2 / 7 CCUT manufacturing process requirement is lower, the cord thread finished product quality is higher, process adjustment can be reduced, and cost can be reduced; and meanwhile, the structure is fully glued, so that internal gaps are reduced under the condition of ensuring the adhesive force.

The invention discloses a flexible photovoltaic support suitable for complex terrains, which is applied to the technical field of flexible photovoltaic supports, and can accurately control the tension of a cable body by arranging an anchoring structure, adapt to the temperature change, and avoid the situation that the cable body droops due to the tension change or aggravates the swinging of a photovoltaic panel in a strong wind environment. And by arranging the wind-resistant connecting structure, the wind-resistant stability of the flexible photovoltaic bracket can be enhanced, the inclination and distortion of the photovoltaic panel can be reduced, the lighting and light receiving stability can be ensured, the power generation efficiency can be improved, and the maintenance cost and the safety risk can be reduced.

A hand operated tool for binding a load. The tool including a hollow tube with interior left hand and right hand threads at opposing ends. Opposing rods with exterior threads on one end and a releasable connection device on the other end that is screwed into each end of the tube. A gear rigidly mounted and encircling the tube allowing a pivotly attached ratcheting U-pawl to engage the gear teeth, the U-pawl attached to and carried by a handle assembly mounted on each side of the gear, the handle protruding perpendicular from the tube. The handle turning the tube in a first rotational direction drawing the rods closer together tightening the bind, the handle turning the tube in a second rotational direction moving the rods farther apart loosening the bind, the rods remaining stationary in rotation during rotation of the tube. A blocking device may be installed to prevent the U-pawl from pivoting into a position to turn the tube in the second rotational direction, that would loosen the bind on the load, the blocking device allowing normal ratcheting and turning of the tube in the first rotational direction tightening the bind on the load. A recessed-pawl partially pivoting independently of the U-pawl and engaging with the gear to prevent the tube from turning in the second-rotational-direction that would loosen the bind on the load when the U-pawl is in a neutral position whereby the U-pawl is not engaged with the gear. In addition, a tension-detecting-device suitable to detect or measure the tension on the ratchet load binder rods and also monitor and communicate the tension to the operator is also provided.