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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.
The rigging is the two frameworks, spreaders, wire ropes and related fittings used by the crane to pick up this submarine. An advanced rigging challenge assembling a wind turbine . An adjustable spreader bar with webbing slings.
A lifting hook with a safety latch. A lifting hook is a device for grabbing and lifting loads by means of a device such as a hoist or crane.A lifting hook is usually equipped with a safety latch to prevent the disengagement of the lifting wire rope sling, chain or rope to which the load is attached.
Cranes can mount many different fittings, such as hooks, blocks, spreader bars, and "choker" lines, depending on load (left). Cranes can be remote-controlled from the ground, allowing much more precise control, at the expense of the view from atop the crane (right).
Hook: Device which moves vertically to raise and lower cargo as well as horizontally along the boom's length. For container cranes, a spreader is attached to span the container and lock it safely in place during movement. Operating cabin: Encased setup with glass paneled flooring for operator to view the cargo being moved.
A modern container crane capable of lifting two 20-foot (6.1 m) long containers at once (end to end) under the telescopic spreader will generally have a rated lifting capacity of 65 tonnes. Some new cranes have a 120-tonne load capacity, enabling them to lift up to four 20-foot (6.1 m) or two 40-foot (12 m) containers.