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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.
Items of goods handling and lifting equipment remain in the buildings, including the wall-mounted jib cranes and facade doors. [1] Revy C is an eight-storey, concrete encased steel framed brick building, rectangular in plan. It features Flemish style gabled parapets and a rusticated ashlar bluestone ground floor. There are Diocletian arched ...
On 4 April 2007, Samson collided with the long jib of smaller rail-mounted "Henson" tower crane, sending the smaller crane tumbling to the ground. The smaller crane weighed 95 tonnes and stood at a height of 25 metres (82 ft), compared to Samson's 106 metres (348 ft).
A jib crane is a type of crane - not to be confused with a crane rigged with a jib to extend its main boom - where a horizontal member (jib or boom), supporting a moveable hoist, is fixed to a wall or to a floor-mounted pillar. Jib cranes are used in industrial premises and on military vehicles.
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.
Rail Crane Rail SPA Crane (750 mm) Czech PW maintenance crane Electric crane replacing track on the Toronto streetcar system (1917). A railway crane (North America: railroad crane, crane car or wrecker; UK: breakdown crane) is a type of crane used on a railway for one of three primary purposes: freight handling in goods yards, permanent way (PW) maintenance, and accident recovery work.
Pit-Cast Jib Crane Last US pit-cast jib crane to operate in the casting of iron pipe. 1905 Birmingham: Alabama United States ASME brochure: 24: 1977 State Line Generating Unit 1. World's largest electric-power generator for nearly 25 years, achieving many design firsts. 1929 Hammond: Indiana United States ASME brochure: 25: 1977 Pratt Institute ...
Taisun, the world's strongest gantry crane, at Yantai Raffles Shipyard, Yantai, China. Full gantry cranes (where the load remains beneath the gantry structure, supported from a beam) are well suited to lifting massive objects such as ships' engines, as the entire structure can resist the torque created by the load, and counterweights are generally not required.