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Heavy-equipment operator training simulators such as tower crane, mobile crane, crawler crane, and concrete pump for the Operating Engineers Training Institute of Ontario [4] and the International Union of Operating Engineers – Local 721. [5] These simulators are used to prepare operators for proper equipment use and accident avoidance.
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 ...
The Roman Polyspaston crane, from Ancient Greek πολύσπαστον (polúspaston, “compound pulley”), when worked by four men at both sides of the winch, could lift 3000 kg. In case the winch was replaced by a treadwheel, the maximum load even doubled to 6000 kg at only half the crew, since the treadwheel possesses a much bigger ...
Originally a Sikorsky Aircraft product, the type certificate and manufacturing rights were purchased from them by Erickson Air-Crane in 1992. Since that time, Erickson Air-Crane has become the manufacturer and world's largest operator of S-64 Aircranes and has made over 1,350 changes to the airframe, instrumentation, and payload capabilities of the helicopter.
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.
The cranes can be equipped with a 3,400t capacity heavy duty jib. [15] The AL.SK350 is the world’s largest capacity land based crane. [16] In 2017 ALE used it to perform the world’s heaviest commercial lift using a land based mobile crane, whilst executing an FPSO (Floating Production, Storage and Offloading) integration project in Brazil. [17]
A crane retrieves part of the wreckage from the Potomac River, in the aftermath of the collision of American Eagle flight 5342 and a Black Hawk helicopter that crashed into the river (REUTERS)
The Guinness World Records state that Taisun holds the world record for "heaviest weight lifted by crane", set on April 18, 2008 at 20,133 metric tonnes (44,385,667.25 lb) by lifting a barge, ballasted with water. [3] However, it was surpassed by the Honghai Crane when the new crane was completed in 2014, with a lift capacity at 22,000 tonnes. [5]