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The multilayer wire rope spooling system has undergone continuous refinement over the years and adapted for any application where long lengths of steel wire ropes must be wrapped in multiple layers quickly and smoothly. Examples include: Cranes for construction sites, offshore oil rigs, ports or on board ships; Deep mining
A turnbuckle, stretching screw or bottlescrew is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems. It normally consists of two threaded eye bolts , one screwed into each end of a small metal frame, one with a conventional right-hand thread and the other with a left-hand thread.
Steel wire reel in Muurame, Central Finland Cable reels in Muurame, Central Finland RG-59 cable reel Shipping Roll trailer carrying cable reels Retractable cable reel. A cable reel is a round, drum-shaped object such as a spool used to carry various types of electrical wires. [1]
In stricter senses, the term wire rope refers to a diameter larger than 9.5 mm (3 ⁄ 8 in), with smaller gauges designated cable or cords. [1] Initially wrought iron wires were used, but today steel is the main material used for wire ropes. Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure.
An optional final stage for the permanent protection of "served" rope is to paint the outer layer of twine with a mixture of tar, varnish and black paint. This needs renewing periodically, and going aloft to paint footropes , shrouds , stays , and other served rigging is one of the regular maintenance tasks on many tall ships .
A hydraulic riser tensioner consists of a hydraulic cylinder with sheaves at both sides. The cylinder is connected to a number of high-pressure gas bottles via a medium separator. A wire rope is rigged in the cylinder; one end is connected to the fixed part of the tensioner, the other end is connected to the riser. [1]