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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.
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]
Level luffing crane, a type of crane where the jib, rather than being fixed, can be raised and lowered; Luffing, when a sailing sheet is eased so far past trim that airflow over the surface is disrupted; The leading edge of a sail
A tower crane is usually assembled by a telescopic jib (mobile) crane of greater reach (also see "self-erecting crane" below) and in the case of tower cranes that have risen while constructing very tall skyscrapers, a smaller crane (or derrick) will often be lifted to the roof of the completed tower to dismantle the tower crane afterwards ...
"It's real desperation to protect and preserve what is the Tower of Terror," she stressed, moments before Yang recalled a moment that he and Rogers had to be evacuated from the ride after it broke ...
In May of 2008, a collapse of the company’s tower crane killed two workers on the Upper East Side of Manhattan. The company and its owner, James Lomma, were acquitted of manslaughter and other ...
Jim Wynorski had made the previous film for Julie Corman, which was called Sorority House Massacre II.Corman's husband Roger wanted Wynorski to remake it, using the same story and cast.
Not the first crane accident for city, or equipment owner. 08:45, AP. The crane is owned by the New York Crane & Equipment Corp., one of the city’s most widely used crane providers, officials said.