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  2. Jib (crane) - Wikipedia

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

    This specific example uses a level luffing mechanism to maintain the load at approximately the same vertical height as the jib moves through its range of travel. 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]

  3. Weeks 533 - Wikipedia

    en.wikipedia.org/wiki/Weeks_533

    Weeks 533 is a 500-short-ton (454 t) capacity Clyde Iron Works model 52 barge-mounted crane which is the largest revolving floating crane on the East Coast of the United States. [1] It was originally ordered for bridge construction and has since been used in several notable heavy lifts.

  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. Bulk-handling crane - Wikipedia

    en.wikipedia.org/wiki/Bulk-handling_crane

    Working the grab requires extra cables from the crane jib, so requires a specialised design of crane throughout, not merely an attachment. Some grabs use 2 cables for lift and control, others use 4. In 1927, Stothert & Pitt of Bath, Somerset produced the first specialised bulk-handling crane. [1] This was to unload coal at Barking power station ...

  6. Ring crane - Wikipedia

    en.wikipedia.org/wiki/Ring_crane

    Jib lengths of up to 160 metres (520 ft) give a lifting radius of up to 100 m (330 ft). They also have a small footprint compared to gantry or Goliath cranes. The performance of super-heavy jib cranes is measured in tonne-metres, the product of weight and lifting radius, typically as much as 100,000 tonne-metres for large cranes. [8]

  7. Crane vessel - Wikipedia

    en.wikipedia.org/wiki/Crane_vessel

    Lodbrok is a floating crane, in the harbor of Ystad 2020. A crane vessel, crane ship, crane barge, or floating crane is a ship with a crane specialized in lifting heavy loads, typically exceeding 1,500 t (1,476 long tons; 1,653 short tons) for modern ships. The largest crane vessels are used for offshore construction. [1]

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