A double girder goliath crane, also known as a double girder gantry crane, is a type of heavy-duty crane commonly used in industrial environments, construction sites, shipyards, and other locations where large and heavy loads need to be lifted and moved. It is a variant of the traditional gantry crane, but with two parallel girders instead of one, offering increased lifting capacity and stability.
Key features of a double girder goliath crane:
Double Girder: As the name suggests, the crane is equipped with two horizontal girders running in parallel across the length of the crane. These girders provide a more robust structure, allowing for higher lifting capacities compared to single girder gantry cranes.
Goliath Legs: The crane is supported by two large goliath legs on either side, forming an "A" shape. These legs are firmly anchored to the ground, providing stability and enabling the crane to traverse along the rails.
Travelling Mechanism: The crane is designed to move along rails on the ground, which are typically embedded in a concrete foundation. This allows the crane to cover a larger area and service multiple workstations or areas within its operating range.
Lifting Mechanism: The lifting mechanism of a double girder goliath crane usually consists of a hoist unit mounted on the bridge between the two girders. The hoist can be electrically powered and controlled to lift, lower, and position heavy loads with precision.
Heavy Lifting Capacity: Double girder goliath cranes are capable of handling heavier loads compared to single girder gantry cranes. They are commonly used in industries where lifting capacities of 5 tons or more are required.
Applications of double girder goliath cranes include loading and unloading cargo in ports, moving heavy machinery in industrial facilities, construction projects, and handling large components in manufacturing plants.