Abstract:
A push-pull steel cable (10) comprises a core (12) and an outer layer of filaments (16) twisted around the core (12). The cable (10) is provided with an external coating (20) of polyethylene terephthalate. The coating (20) gives to the cable (10) a good resistance against corrosion, a good weatherability, a good adhesion and adhesion retention and a friction resistance which is comparable to the friction resistance of a cable with a nylon coating. The cable (10) can be used as a brake cable, a shifting lever cable or a window elevator cable.
Abstract:
L'invention concerne un câble de traction (1) comprenant une âme monobloc (2) comprenant un noyau central (4) muni sur sa périphérie d'une série d'ailettes (5) régulièrement espacées formant entre elles des gorges de réception (6) de section au moins partiellement circulaire et des torons (3) disposés autour de l'âme (2) par insertion dans chacune des gorges de réception (6), de telle sorte que l'association de l'âme et des torons (3) présente une enveloppe extérieure de forme sensiblement cylindrique, les torons (3) étant incrustés dans les gorges de réception (6), sans pour autant venir faire fluer les ailettes (5) qui les séparent. L'invention concerne également une âme monobloc (2, 7) pour câble de traction ainsi que l'utilisation de ce câble (1) en tant que câble de traction pure ou en tant que câble porteur-tracteur.
Abstract:
Disclosed are a steel wire rope having a six-strand fiber filled core and a process and special equipment for manufacturing same. The steel wire rope comprises a steel core (1), and six outer layer strands (2) twisted on the steel core, with each of the outer layer strands (2) being compacted individually, and an oil-containing high molecular polymer cord (3) embedded between the steel core and two adjacent outer layer stands. By means of a compacting process applied to the outer layer strands, the outer surfaces thereof become tidy and smooth, so that the contact areas between the steel wire rope and a pulley, a winding drum, and a supporting roller are increased, the stress concentration is reduced, and the probability of the steel wire rope being scrapped as a result of wires breaking prematurely is reduced; and embedding the oil-containing high molecular polymer cord between the steel core and two adjacent outer layer strands effectively solves the problems of insufficient oil storage in the steel wire rope and rigid contact between the strands and the core, such that the service life of the steel wire rope is increased by more than 80% as compared with the steel wire ropes originally used.
Abstract:
A synthetic rope for an elevator having improved resistance to compression and abrasion is provided and comprises a plurality of strands forming layers of the rope, each strand formed from a plurality of pre-twisted strands made from high modulus synthetic filaments. One or more of the strands or layers of strands may be impregnated with a lubricant, such as polytetrafluoroethylene, to reduce the abrasion among the strands and substrands, and increase the service life of the rope. The exterior of the rope may be covered by a jacket that provides for traction with the drive sheave. An elevator system comprising the claimed rope is also provided.
Abstract:
A main cable of an elevator which comprises an inner layer portion (1) having a plurality of inner layer strands (2) and, arranged so as to cover the perimeter of the inner layer portion (1), an outer layer portion (4) having a plurality of outer layer strands (5), the inner layer strand(2) and the outer layer strands (5) being manufactured by twisting together elementary wires made of a synthetic fiber, wherein the outer layer portion (4) has a tensile strength lower than that of the inner layer portion (1). The inner layer portion (1) preferably has a tensile strength of 60 % or more relative to the total tensile strength of the main cable.
Abstract:
The invention concerns a method which consists in forming subassemblies (6) by assembling pultruded strands (5) consisting of traction resistant fibres embedded in a resin, and coating the assembled strands in a protective plastic jacket (7). Said subassemblies are wound on transport reels (12). On a manufacturing site preferably located on the sea front, the tether (4) is formed by assembling the subassemblies unwound from the transport reels, and by coating the assembled subassemblies in an outer plastic sheath (9). The resulting tethers can then be transported to the platform for anchoring the latter.
Abstract:
PROBLEM TO BE SOLVED: To efficiently produce a steel cord providing higher durability. SOLUTION: A tension of 0.5-5.0 kg is applied to one steel core wire 14 and a lubricant in an amount of 10-500 mg per kg of the two core wires 14 is applied thereto to twist 5-7 sheath wires together by a strander body 20. Thereby, dispersion of the surface conditions in the longitudinal direction of the core wires can be absorbed and the core wires can smoothly be passed through guides installed in the interior of the strander body 20 with good lubricity. Thereby, the tension when twisting the sheath wires together is stabilized. Twisting properties can be stabilized and wire breakage can be suppressed. Since the twisting properties of the resultant steel cord 26 are stabilized without wire breakage, the high durability can be afforded by using the steel cord in a belt-reinforcing material of a pneumatic tire. COPYRIGHT: (C)2008,JPO&INPIT