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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.
1005: Weapons (from 1 mm through 30 mm). ... Cranes and Crane-Shovels; ... Chain and Wire Rope; 4020: Fiber Rope, Cordage, and Twine ...
The sheaves make up the pulley system that holds the wire ropes, and the wire ropes extend to latch onto objects. [1] Of the most commonly used cranes in modern-day construction, the crawler crane is the largest and can lift loads in excess of 2,500 tons. This crane is mounted on an undercarriage with tracks, which ensures mobility and stability.
[11] [12] These cranes each use approximately 33 km (21 mi) of braided wire rope, 72 mm (2.8 in) thick. [6] These two large cranes are also equipped with an auxiliary hoist capable of lifting 2,500 t (2,800 short tons) at a radius between 33 and 60 metres (108 and 197 ft).
The 2nd Auxiliary hook can be deployed to a water depth of 450 m. The two cranes are capable of a tandem lift of 14,000 tonnes. Each crane was fitted with 15,600 hp (11,630 kW) engines to power the boom and load hoists, 9 tugger lines and the crane slewing system. The cranes use 48 miles (77 km) of wire rope of various diameters.
Mobile cranes generally operate a boom, from the end of which a hook is suspended by wire rope and sheaves. The wire ropes are operated by whatever prime movers the designers have available, operating through a variety of transmissions. Steam engines, electric motors, and internal combustion engines (IC) have all been used. [citation needed ...
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