Cranes are an essential part of modern industrial materials handling and manufacturing. Without these essential pieces of equipment moving heavy loads would be left to manpower – and that would severely impact productivity. Hoist cranes are among the most widely used types of cranes – and there are a variety of types on the market. For those companies that want to move extremely heavy loads around enclosed spaces such as warehouses, the first choice is often the double girder gantry crane(grúa portal birriel).
These cranes are available in a variety of lifting capacities so are suitable for a variety of enterprises and spaces. The double girder gantry crane is particularly useful due to its high loading capacity (in general up to 50 tons – but the loading capacity can run to hundreds of tons), however, it does have several other advantages. These include the fact that it can boast large spanes and extremely good stability, making it suitable for larger warehouse spaces and manufacturing facilities. However, when compared to the single gantry crane it weighs more so the installation costs are higher and it is also more costly to purchase. However, the return on investment is exceptional due to its versatility and ability to handle large loads.
A top-running double girder gantry crane(grua portico monorriel) features two bridge beams with the rails situated on top of the girders. For heavy-duty use, these cranes often feature longer spans and higher capacity. Given the high load-bearing capacity, both hoist and trolley need to be designed to extremely high specifications. This is one of the reasons that this sort of crane is more expensive than other types. It is also worth noting that the added weight of the double girders means that users need to pay special attention to the load-bearing capacity of the structure that will house the double girder gantry crane. This may require the installation of more tiebacks or a reinforcement of the support beams of the structure.
However, there are also double girder gantry cranes that are used in outdoor applications, as well as cranes featuring an under-running trolley
Double girder gantry cranes are an invaluable asset in a number of industries. There is of course warehousing and logistics, but they are also used in the mining and shipping industry, bridge building, and precast yards. The number of different models of this type of crane(grua portico) means that they are suitable for a variety of environments – from small workshops to those used in shipyards – it simply depends on what sort of loading capacity is required. This versatility is what makes this type of crane so popular. In addition they are tremendously robust and maintenance costs are relatively low.
The latest trend in double gantry crane controls is the full remote control option. This can be wired or completely remote. There are a variety of different controller types.
There are a variety of suppliers of these sorts of cranes. However, those considering purchase should ensure that the manufacturer has reputation for supplying excellent products – and that full support services are available.
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