The gantry crane is a type of crane that is typically used to lift and move heavy loads in a variety of industrial applications. It consists of a large structure that spans a workspace or area, with two legs on either side. And the whole structure seems like a big gate, we call it Gantry Crane. The crane's horizontal beam, also known as a bridge or girder, runs along the top of the legs and is supported by a trolley that moves back and forth along the length of the beam.