▶ Gantry cranes are a type of crane built atop a gantry, which is a structure used to straddle an object or workspace.
▶ Gantry cranes can be operated from the ground via cable-connected control pendant, radio remote control or from cabin.
▶ In addition, multiple controls are possible by switching control from one mode to another.
▶ The system allows operation of the crane in a manual, semi-automated or fully automated mode.
▶ Further confusing the issue is that gantry cranes may also incorporate a movable beam-mounted hoist in addition to
the entire structure being wheeled, and some overhead cranes are suspended from a freestanding gantry.