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  2. Jib (crane) - Wikipedia

    en.wikipedia.org/wiki/Jib_(crane)

    A jib or jib arm is the horizontal or near-horizontal beam used in many types of crane to support the load clear of the main support. [1] [2] An archaic spelling is gib. [3] Usually jib arms are attached to a vertical mast or tower or sometimes to an inclined boom.

  3. Jim Crane - Wikipedia

    en.wikipedia.org/wiki/Jim_Crane

    He moved to Houston in 1980, and in March 1984, Crane borrowed $10,000 from his sister and founded Eagle USA Airfreight, an air-freight logistics business. [ 10 ] [ 11 ] Eagle USA Airfreight later became Eagle Global Logistics, and then EGL, Inc., and moved into the supply-chain management and information-services business.

  4. Level luffing crane - Wikipedia

    en.wikipedia.org/wiki/Level_luffing_crane

    A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.

  5. Crane (machine) - Wikipedia

    en.wikipedia.org/wiki/Crane_(machine)

    The "hammerhead", or giant cantilever, crane is a fixed-jib crane consisting of a steel-braced tower on which revolves a large, horizontal, double cantilever; the forward part of this cantilever or jib carries the lifting trolley, the jib is extended backwards in order to form a support for the machinery and counterbalancing weight. In addition ...

  6. Ring crane - Wikipedia

    en.wikipedia.org/wiki/Ring_crane

    Mammoet crane (red) set up in Nigg Energy Park, Scotland to load jacket foundations (yellow) for the Seagreen Offshore Wind Farm. A ring crane is a form of large construction crane with a luffing jib. It is distinguished by its slew pivot [i] being in the form of a ring-shaped track, rather than a narrow central spindle. The broad base this ...

  7. Hercules crane - Wikipedia

    en.wikipedia.org/wiki/Hercules_crane

    The crane was powered by a semi-portable steam engine in a small cabin at the rear of the jib, also helping as a counterweight. 1871 timber queen post truss jib, for the North Sea Canal Construction of the Dutch Noordzeekanaal from 1865 to 1876 used a variety of cranes, including two significant examples of the Hercules type.

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