Torque balanced hybrid rope

摘要

A hybrid rope constructed of a plurality of strands, wherein each strand is constructed of a fiber center, a jacket surrounding the fiber center, and a plurality of wires surrounding the jacket. The fiber center can be constructed of one or more high-strength synthetic fibers or yarns. The jacket can be constructed of polypropylene, thermoplastic polyurethane, high-density polyethylene, linear low-density polyethylene, nylon or other similar materials. The jacket can have a braided or woven design and adds a protective layer between the fiber center and the wires. The wires can be constructed of high-strength steel wires, galvanized steel or stainless steel. The fibers or yarns that make of the fiber center are twisted to lay right and then covered with the jacket. The wires then surround the jacket and are twisted to lay to the left. This creates a torque-balanced condition of the hybrid rope.

主权项

1. A torque balanced hybrid rope comprising:
a plurality of strands having a closed spiral arrangement with each other, wherein each said strand includes a fiber center comprising a plurality of fibers spirally arranged with a helical angle of approximately between 2 and 12.5 degrees and surrounded by a plurality of wires spirally arranged in the same direction as said plurality of fibers around said fiber center, and wherein said plurality of strands is twisted in an opposite direction as said plurality of fibers and said plurality of wires so that said hybrid rope resists rotating when a tension force is applied to the rope in a lifting operation.