A gantry crane is a type of crane that uses a bridge supported by two or more legs to lift and move heavy loads. The bridge of a gantry crane is typically made of steel or aluminum and is supported by a gantry framework that runs along a track on the ground.

The legs of a gantry crane can be fixed or mobile, depending on the design of the crane. Mobile gantry cranes are equipped with wheels or casters that allow them to be moved around a work area, while fixed gantry cranes are bolted to the ground.

Gantry cranes are commonly used in industrial and construction settings to lift and move heavy equipment, machinery, and materials. They are ideal for situations where the load needs to be moved horizontally, as well as vertically.

Gantry cranes come in different sizes and capacities, and they can be customized to suit specific lifting requirements. They can be powered by electricity, diesel, or other fuel sources, and can be equipped with various lifting mechanisms, such as a chain hoist, a wire rope hoist, or a grab bucket.

Gantry cranes are designed to be safe and easy to operate, with features such as overload protection, emergency stop buttons, and safety brakes to prevent accidents and ensure stability. They are also highly efficient, as they can lift and move heavy loads quickly and easily, reducing the need for manual labor and increasing productivity.