Gantry cranes are common equipment used in construction to lift heavy items. These cranes are also featured in the shipping industry where they raise and lower containers onto ships. There are many different types of cranes in general. Gantry cranes also come in many different types which can make choosing one somewhat difficult. This article will cover the types of rail mounted gantry cranes.
Railed cranes are most often used in ship and steelyards. These cranes are the largest types of cranes available but railed cranes come in a variety of sizes. They have hoists that are mounted above and the rails are usually located on the ground.
These are supported by the legs which hold everything together. An electric motor powers the hoist to lift the object. There are four basic types of rail mounted cranes.
The gantry(portico) for general use is among the smaller types described above. These can be used in warehouses and usually lift nothing more than about 100 tons. A hydropower gantry crane is a little larger and can lift 500 tons.
Shipyard railed gantry cranes work to maintain or build ships. They have two trolleys. One goes on top of the rail and the other goes beneath the rail. These are capable of turning over a large load. These lift 1500 tons. A container gantry is used in a similar situation but works to lift containers at ports.
These have rails to transport containers(contenedores), sometimes up to four at a time, from a ship to a truck. They are responsible for speeding up the process of loading and unloading at ports and are among the most important railed gantry cranes available.
The container gantry cranes are also among the largest available. They are common because more and more ports are relying on them now that they have automated capabilities. The technology for these cranes has been the same since they were introduced in the 1960s. Only recently have they become automated and started speeding up the movement of cargo at major ports.
Now that you know the basics of railed gantry cranes how do you know which one is right for your company? If you are in shipping or shipbuilding, railroad work or other industry where extremely heavy loads must be handled, you will want to look into the larger items like the container gantry cranes. For applications at construction sites or in warehouses, smaller gantry cranes are best. Do you know Weihua Cranes(Grúas de Weihua)? This company has high quality machines.
When choosing them, you have the option of getting a single girder gantry crane or one with a double girder. These help you if you need more leg clearance or faster speeds. A double girder works with larger, bigger loads. The span of the crane will also help you do your job so if you have enough space, choose one with a larger span to get more lifting power. A shorter span is good for smaller areas or lighter loads.
Rail mounted gantry cranes are available from manufacturers online. They are also called RMGs for your convenience in searching for them. Get more info: https://weihuagruas.com.mx/grua-portico-para-contenedores/