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A gin pole in use loading logs. A gin pole is a mast supported by one or more guy-wires that uses a pulley or block and tackle mounted on its upper end to lift loads. The lower end is braced or set in a shallow hole and positioned so the upper end lies above the object to be lifted. The pole (also known as a mast, boom, or spar) is secured with ...
A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg derrick. The most basic type of ...
A gyn is an improvised three-legged lifting device used on sailing ships.It provides more stability than a derrick or sheers, and requires no rigging for support. Without additional support, however, it can only be used for lifting things directly up and down.
The principle applications of guyed masts are the masts of sailing vessels, guyed towers, and as the main tower of heavy equipment such as cranes, power shovels, draglines, and derricks, the simplest of which is the gin pole. Guyed masts are frequently used for radio masts and towers.
Shear legs are a lifting device related to the gin pole, derrick and tripod (lifting device). Shears are an A-frame of any kind of material such as timbers or metal, the feet resting on or in the ground or on a solid surface which will not let them move and the top held in place with guy-wires or guy ropes simply called "guys".
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Ground mounted small wind turbines are typically supported by four guy-wire, and a gin pole used to raise and lower the tower. Full mounting sets called "tower kits" are available. A range of synthetic materials including carbon fiber reinforced polymers, nanocomposites, [4] and E-glass-polyester are available. [5]
Three died when tower collapsed after a gin pole ran off its track and snapped a guy wire Grigoriopol transmitter, Moldova 1997: Guyed steel lattice mast 350 Ice Two masts collapsed 250 KXJB-TV mast, North Dakota, US April 6, 1997: Guyed steel lattice mast 628 Ice KNOE-TV Tower, Columbia, Louisiana: March 20, 1997: Guyed steel lattice mast 606 ...