Abstract:
A wire rope has a lubricated core, an inner jacket in contact with the core, and outer strands wrapped around the inner jacket. An outer jacket surrounds the outer strands and contacts the inner jacket to form an integrated jacket. A method of forming an integrated jacket for a wire rope in which an inner jacket is cold applied and an outer jacket is applied by application of molten material to the inner jacket.
Abstract:
Synthetic fiber rope for a crane, include a central strand having an inner core made of a synthetic resin and an inner cover made of synthetic fibers and connected to the inner core via braiding, a plurality of outer strands each of which includes an outer core made of a synthetic resin and an outer cover made of synthetic fibers and connected to the outer core via twisting and which are connected to the outer surface of the central strand via braiding, and a jacket made of synthetic fibers and braided to cover the surface of the plurality of outer strands. Method of manufacturing a synthetic fiber rope is also disclosed.
Abstract:
A combined cable comprising a core cable of high-strength synthetic fibers, which take the form of a twisted bundle of monofilaments or a plurality of twisted bundles of monofilaments, and comprising an outer layer of steel wire strands, is characterized in that the bundle or bundles of monofilaments is or are stretched, with a reduction in diameter, and held in this state by a sheathing, in particular a braided sheathing. The extension under strain of the core cable under load is thereby reduced, so that the load distribution between the cross section of steel and the cross section of synthetic material of the cable improves.In order, in the same sense, conversely to make the strain behavior of the layer of strands approximate that of the core cable, the cable has an intermediate layer of an elastic synthetic material into which the steel wire strands are pressed while spaced apart from one another in such a way that the outer layer extends under load, and contracts radially.A strand can be analogously constructed.
Abstract:
A hybrid cord which is characterized by (A) a core steel filament; (B) a first layer of one or more nonmetallic filaments which are wrapped about the steel filament in the core; and (C) a second layer of from 4 to 12 steel filaments which are wrapped about the first layer.
Abstract:
This invention provides a composite wire rope comprising a plurality of outer strands laid helically about a helically stranded core. The core is comprised of high strength synthetics, such as polyamide or polyolefin materials to form a unitized lay central member. The method for forming the rope comprises the steps of twisting high strength synthetic monofilament yarns into core elements to provide a high degree of stability and overall tensile strength. Each such element is helically laid in a single operation to form the finished core. Lubricant may be applied and subsequently a protective jacket of steel, natural or synthetic material may be provided to encapsulate the core and lubricant. The rope structure is completed by helically laying a plurality of outer strands about the core.
Abstract:
A rope forming machine in which consecutively installed between a reel holding a core of fibrous material and a rotor circumferencially mounting a plurality of wire reels for holding the outer strands of the rope is a spring forming mechanism for forming wire into a cylindrical spring which is used to surround the core brought off the core-holding reel and a device for determining the extent of tensioning of the cylindrical spring with the core enclosed therein after emerging from the spring forming mechanism. The rotational speed of the rotor and a drawing-off drum for drawing off the finished rope formed by twisting the strand around the formed cylindrical spring are controlled, to correlate the rate or rope twisting and that of cylindrical spring forming.
Abstract:
A steel cord for rubber reinforcement comprises a first group of core filaments having a number of m and a second group of sheath filaments having a number of n, m is three or four, the core filaments are forming a helix, the core filaments are not twisted together and being substantially parallel or the core filaments have a twist pitch being more than 300mm; the second group and the first group are twisted around each other, and the sheath filaments are forming a flattened helix in the same direction of the helix of the core filaments, and the sheath filaments have a cord twist pitch, at any cross-section of the steel cord, at least one interstice between two adjacent core filaments is present. The steel cord has improved abrasion resistance and can contribute to the reduction of the weight of the tire.
Abstract:
The present invention relates to a mooring, lifting and/or towing line or rope (10) and method for making the same, wherein the line or rope (10) comprises a core line (3) which is folded in a looped or repeated pattern, where the core line (3) is folded at a first point (71), and is brought along with a first predetermined core line (3) length (L1), then folded at a second point (72) and is brought along with a second predetermined core line (3) length (L2) and then folded at a third point (73) and is brought along with a third predetermined core line (3) length (L3), wherein the second predetermined core line (3) length (L2) is bigger than the first predetermined core line (3) length (L1).
Abstract:
The invention relates to a combined cable having a core cable made of high-strength plastic fibers present as a twisted monofilament bundle or a plurality of twisted monofilament bundles, and having an external layer of steel wire strands, characterized in that the monofilament bundle or bundles is or are stretched to reduce the diameter and held in a cladding, particularly braided cladding, in this state. The strain of the core cable under load is thus reduced, so that the load distribution between the steel cross-section and the plastic cross-section of the cable is improved. In the same sense, in reverse, in order to have the strain behavior of the strand layer approach that of the core cable, the cable has an intermediate layer made of an elastic plastic, in which the steel wire strands are pressed at a distance from each other, such that the external layer stretches under load and contracts radially.