摘要:
In an elevator wire rope 1 structured by twisting a plurality of schenkels 3, each schenkel 3 being formed by twisting a plurality of strands 2, each strand 2 being formed by twisting a plurality of fine steel wires 2a to 2g, the interior of the wire rope being filled with a resin 4, and the surface of the wire rope being covered with a resin 5, wherein the direction in which the fine steel wires 2a to 2g and the strands 2 are twisted and the direction in which the schenkels 3 are twisted are mutually opposite, and the diameter d4 of the inscribed circle of the plurality of twisted schenkels 3 is smaller than the diameter d2 of the schenkel 3.
摘要:
An elevator includes a car, a counterweight, a suspension working together with the car and the counterweight, and a wheel at least partially wound around by the suspension, wherein the suspension comprises a tie beam arrangement made of two tie beams and a shell encasing the tie beam arrangement, said shell comprising a longitudinal structure in an area of an outer surface partially winding around the wheel, and wherein the ratio of the width of the suspension to the height thereof is greater than one and less than or equal to three. The wheel comprises a groove for guiding the suspension on the sides, in which the suspension is at least partially received, and the groove floor thereof being formed flat. The shell is coated, at least in areas, on the outer surface thereof, wherein the coating optionally has a friction-reducing, friction-increasing, and/or wear-reducing effect.
摘要:
An embodiment of a wellbore cable comprises a cable core, at least a first armor wire layer comprising a plurality of strength members and surrounding the cable core, and at least a second armor wire layer comprising a plurality of strength members surrounding the first armor wire layer, the second armor wire layer covering a predetermined percentage of the circumference of the first armor wire layer to prevent torque imbalance in the cable.
摘要:
Strands and wire ropes composed of materials such as high carbon steels and stainless steels can be provided in a compacted, mechanically stress relieved and thermally stress relieved condition. The wires are compacted during stranding to form the individual strands of the wire ropes. The wires can be thermally stress relieved prior to stranding to remove tensile residual stresses. Compaction produces a compressive residual stress state in the strands which increases fatigue resistance. The strands can be thermally stress relieved subsequent to closing. The wires and strands can be heated using a process such as induction heating. The wire ropes can be torque balanced or rotation resistant. The wire ropes have high strength, a high strength-to-weight ratio and enhanced fatigue life. Stainless steel wire ropes also provide corrosion resistance.
摘要:
A bow string having a plurality of parallel strands, comprising at least one first strand being twisted in a clockwise manner, and at least one second strand being twisted in a counter clockwise manner, wherein the amount of twists in the second strands are the same as that of the first strands, and wherein the number of first strands approximately equals the number of second strands.
摘要:
A flexible load-carrying cord which is adapted for embedment in a polymeric product, apparatus and method for making such a cord, and product utilizing same are provided wherein the cord comprises a plurality of elements which are twisted in one direction and normally have a tendency to untwist and a polymeric sleeve is bonded around the cord with the sleeve comprising a polymeric matrix having a plurality of discrete randomly arranged fibers embedded therein with the fibers being disposed in a helical pattern which extends in a direction opposite from the one direction and the sleeve with its fibers serving to substantially eliminate the tendency of the elements to untwist.
摘要:
.Iadd.A torque balanced regular lay wire rope having from three to six strands spiraled together such that the angle of lay of the outer wires in each strand is at least two times greater than the angle of lay of the strands in the rope and said rope is in a stress relieved condition..Iaddend.
摘要:
A double twist twisting apparatus adapted to twist steel wires, comprising a plurality of wire suppliers each having a base pedestal, a main shaft rotatable relative to said pedestal, a first flyer fixed to said shaft, a frame mounted on said first flyer, a wire supply source adapted to remain stationary with respect to said pedestal, even while said flyer rotates, and a plurality of guide rollers mounted on said frame, said wire suppliers each imparting two back-twists to a wire delivered from said wire supply source for each rotation of said first flyer; a back tension capstan for imparting back tension to a group of wires delivered from said wire suppliers; an open-shaped twister having a pair of second flyers being C-shaped and diametrically opposed to each other and supporting a take-up motion between said second flyers via a frame, for imparting a first twist to said group of wires; and a third flyer adapted to be rotated in the same direction and at the same speed as said twister, for imparting a second twist to said group of wires; said third flyer having a twist pitch determining capstan, a wire straightener, a coarse winder, and a slip capstan all supported in said flyer via a frame.
摘要:
A torque balanced conductor cable includes between three and six strands spiraled together with the torque exerted by the cable being approximately equal to the torque exerted by the strands. Each strand includes an insulated conductor as a core with steel wires stranded therearound and the insulation extending into the interstices of the strands. Another species includes insulated conductors positioned in the outer valleys of the cable and a sheath extruded over the entire assembly. This second species may be used with the first species or with cables in which the strands have a steel wire core member.