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Dynamic loads considered in lifting design are accounted for in two stages; suction to the casting bed on the initial lift and then the dynamic loads induced from crane vibration. These crane impact loads must be accounted for during transportation in the yard and on-site, and the coefficient increases from an overhead gantry crane through to a ...
Factory-calculated charts (or electronic safeguards) are used by crane operators to determine the maximum safe loads for stationary (outriggered) work as well as (on-rubber) loads and travelling speeds. Truck cranes range in lifting capacity from about 14.5 short tons (12.9 long tons; 13.2 t) to about 2,240 short tons (2,000 long tons; 2,032 t).
Lift and dump capacities of hydraulic hooklift hoists typically range from 8,000 to 68,000 lb (3,630 to 30,800 kg). Generally a hoist is capable of lifting (off the ground) and dumping (onto the ground) the same maximum capacity, although there can be exceptions where short wheel bases are involved.
Some shipbuilding companies have started to use SPMT instead of gantry cranes for carrying ship sections. This has reduced the cost of transporting huge loads by millions of dollars. [11] Scheuerle Fahrzeugfabrik Gen 1 14 axle line SPMT developed for Mammoet in the 1980s. In 2022 Mammoet and Scheuerle developed and employed world's first ...
AHC cranes need to calculate the vertical displacement and/or the velocity of the crane tip position in order to actively heave compensate a load sub-sea. A good AHC-crane is able to keep its load steady with a deviation of a few centimeters in waves up to 8m (+/-4m). AHC cranes are typically used for sub-sea lifting operations or construction ...
A simple crane. A counterweight is a weight that, by applying an opposite force, provides balance and stability of a mechanical system. [1] The purpose of a counterweight is to make lifting the load faster and more efficient, which saves energy and causes less wear and tear on the lifting machine.
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Rigging of an asymmetrical scaffolding piece: the lifting beam is blue, the load is attached to the beam using grey slings. The lifting beam (also known as traverse, spreader beam) is a steel beam that is attached to the hook of the crane in order to spread the slings from one end of an elongated load (like a wall panel) to another.
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