‎gantry‬ ‪cranes‬

‎gantry‬ ‪cranes‬ in slings, try to avoid the ups and downs of the arm. In case you must hoist arm when the ups and downs, from 50% by weight must not exceed the specified weight. two cranes at work on the same track, the distance between the two planes should be greater than 3m.semi gantry cranes legs at one end, the other end of the outrigger, run directly in the high bench.lifting weights, hook wire rope should remain vertical, oblique allowed to drag the object to be hung