Load sway is created with every acceleration and braking process of a crane. This is normally a disadvantage in spotting piece goods, but is very much part of grab operations and may actually be induced deliberately by crane drivers to increase cycle speeds.
Several years ago, ABB introduced a pendulum control drive system specifically designed for grab cranes which induced sway and automated the outward and return cycle....
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This complete item is approximately 1200 words in length, and appeared in the July/August 2005 issue of Bulk Materials International, on page 16.
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