книги Наука, техника, медицина Техника Машиностроение

Derrick

Код 2439928

  • ISBN: 978-5-5117-7268-4

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Аннотация к книге "Derrick"

High Quality Content by WIKIPEDIA articles! A derrick is a lifting device composed of one tower, or guyed mast such as a pole which is hinged freely at the bottom. It is controlled by lines (usually four of them) powered by some means such as man-hauling or motors, so that the pole can move in all four directions. A line runs up it and over its top with a hook on the end, like with a crane. It is commonly used in docks and onboard ships. Some large derricks are mounted on dedicated vessels, and are often known as "floating derricks".

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ISBN: 978-5-5117-7268-4

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