A gantry crane is a type of crane that consists of a frame supported by two or more legs, which move on wheels or tracks. It is designed to lift and transport heavy loads, making it commonly used in construction sites, warehouses, and shipping yards. The crane's hoisting mechanism is typically mounted on a horizontal beam, allowing it to move loads vertically and horizontally. Gantry cranes can vary in size and capacity, from small models used for light tasks to large industrial versions capable of lifting several tons. They are often used to handle materials like steel beams, shipping containers, and heavy machinery, providing efficient solutions for material handling.