Abstract:
A hoisting rope for a hoisting apparatus has a longitudinal direction, a thickness direction and a width direction, and includes a group of load bearing members made of composite material comprising reinforcing fibers embedded in polymer matrix; and a coating encasing the group of load bearing members; wherein the load bearing members extend in an untwisted manner inside the coating parallel with each other as well as with the longitudinal direction of the rope throughout the length thereof, the load bearing members being substantially larger in width direction than in thickness direction of the rope and stacked against each other in thickness direction of the rope. An elevator includes the hoisting rope.
Abstract:
A rope having a cut-resistant jacket which includes a core comprised of a plurality of sub-ropes. The sub-ropes may be in a parallel strand configuration. The sub-ropes and the strands thereof may be made of fibers of a synthetic material, such as polyester, nylon, polypropylene, polyethylene, aramids, or acrylics. A cut-resistant jacket surrounds the core and is made from a material that has increased strength and/or abrasion resistance over the material of the core. The cut-resistant jacket may comprise steel wires and may further comprise braided steel wires or rope. The braided steel wires or rope may be covered with a plastic material for increased corrosion resistance. A filter layer may be disposed between the core and the cut-resistant jacket and may be wrapped around an outer surface of the core prior to the cut-resistant jacket being formed.
Abstract:
The invention relates to a high strength fibers comprising a coating of cross-linked silicone polymer, and ropes made thereof. The fibers are preferably high performance polyethylene (HPPE) fibers. The coating comprising a cross-linked silicone polymer is made from a coating composition comprising a cross-linkable silicone polymer. The rope shows markedly improved service life performance in bending applications such as cyclic bend-over-sheave applications. The invention also relates to the use of a cross-linked silicone polymer in a rope for an improvement of bend fatigue resistance.
Abstract:
An exemplary method of making a woven fabric includes weaving a plurality of load supporting tension members and a plurality of cross fibers together into a woven fabric. A spacing between adjacent ones of the tension members has a first dimension. At least some of the cross fibers are shrunk to thereby decrease the spacing between the adjacent ones of the tension members to a second, smaller dimension. In another example, two woven fabrics are positioned next to each other. The two fabrics include a spacing between adjacent tension members having a first dimension. At least one tension member of one woven fabric is aligned with and between two of the tension members of the other fabric to thereby decrease the spacing to a second, smaller dimension.
Abstract:
A support element system, particularly for elevators, has at least one support element having two load-bearing tensile carriers which are arranged horizontally adjacent to one another and which are enclosed in a common elastomeric casing separating the two tensile carriers. The tensile carriers respectively have an opposite direction of wrap. The system has a drive pulley for transmission of a drive force to the at least one support element, wherein the drive pulley has a contoured traction surface with two support surfaces, which are provided for transmission of the drive force and which co-operate with the support element.
Abstract:
There is provided a load bearing material with a high energy-absorbing effect at the time of deformation. A metallic external tube 2, a plurality of internal steel tubes 3, 3A, 3B arranged inside the external tube 2 are arranged by positioning the plurality of internal steel tubes 3, 3A, 3B, and thus, the load bearing capacity is improved by the plurality of the internal steel tubes 3, 3A, 3B. Further, when a load is applied, the internal steel tubes deform in a flattened form to thereby enable the external tube to deform as well. As a result, no stress concentrates locally on the external tube 2, thus improving an energy-absorbing effect. Further, a filler 4 is filled between an inside 21 of the external tube 2 and outsides of the internal steel tubes, thereby enabling the plurality of the internal steel tubes 3, 3A, 313 to be simply positioned.
Abstract:
A rubber-steel cord composite is provided having nonlinear physical properties even in a rubber characterized by incompressive properties after vulcanization, and hence the rubber-steel cord composite can show low rigidity and flexible properties in a low-strain region and, on the other hand, can show high rigidity in a high-strain region. The rubber-steel cord composite is provided by bundling steel linear objects 1 subjected to spiral shape forming at substantially identical pitches in an approximately identical phase without twisting, the steel cord being embedded in rubber.
Abstract:
The present invention includes a nontwisted composite tether comprising one or more composite rods encased in a jacket and a method for manufacturing same. A portion of the rods may be bundled into one or more strands, provided however that the rods comprising the strands are not twisted into twisted strands in the assembled nontwisted tether. Such untwisted strands, if any, additionally are not twisted relative to each other. Temporary and/or permanent buoyancy may be to the tether. The present invention includes methods for preparing, transporting, and installing a composite tether on a floating platform. The tether, preferably assembled at a waterfront, is launched into the water and towed to an offshore installation site, where the tether is upended and connected via a bottom end connector on the tether to an anchor foundation in the seabed and connected a top end connector on the tether to the floating platform.
Abstract:
The safety mountaineering rope (1) has a core comprising a plurality of core ropes (2).In order to improve the tearing resistance of the rope (1), the rope core surrounds in the manner of a tube at least one cavity (3) extending over the entire length of the rope (1). In this case the cavity (3 )is filled by means of at least one resilient filling material or body, resilient at least as viewed in the radial direction of the rope (1), and which, when the rope (1) is pulled over an edge and with a high tensile force for example, results in a considerable momentary flattening of the cross-section of the rope when pulled over the edge and thus a considerably wider support of the rope (1) on such an edge. In addition, the rope core (2) is surrounded by a rope sheathing (4) provided with a protective layer (5) impervious to particles of dirt.