An overhead crane is mostly used in industrial environments. It consists of a traveling bridge and parallel runways. The lifting component that travels along the bridge is called a hoist. A bridge that is rigidly supported by two or more legs on a fixed rail ground level is called a gantry crane. Unlike construction or mobile cranes, overhead bridge cranes are mostly used for maintenance or manufacturing applications where downtime and efficiencies are critical factors.
When do you Need an Overhead Crane?
if you frequently move loads in a manufacturing facility and you need a high level of speed and efficiency, you need an overhead crane. Most fabricating operations make use of an overhead crane. Metal fabricating operations, for example, make use of overhead cranes to keep down overhead costs. Most companies do not use overhead cranes because they are unaware of what they are truly capable of, making use of lift trucks instead(Weihua grua mejor ). The reason is that a lift truck is the most common means of moving steel around in a metal fabricating facility and training the drivers takes just a few hours. However, lift trucks are not suitable everywhere for example where space is a factor or where speed and efficiency are optimal.
In these instances an overhead crane will solve the problem of confined space where it is difficult to maneuver a truck lift(montacargas) and in a tool and die shop where there is adequate space, an overhead crane will make a huge(un enorme) difference to production efficiency. One overhead crane is all that is needed to carry a load along the width and breadth of the building, dropping it off at appropriate stations served by a lighter-duty crane. One operator is all it takes to control all the loading and unloading of loads during the manufacturing process.
When considering an overhead crane floor space is always a crucial factor(factor 1 ton). However the advantages of having just one crane operator running the crane saving manual labor. It is also much safer than having a forklift running up and down all day that increases the risk of injury.
Overhead bridge cranes are most suitable for metal fabricators(fabricantes de 2 ton). The cranes can either run on top of girders or be underhung. It is a popular choice because it runs on elevated tracks and offers hook motion along 3 axes – back and forth, up and down, and side to side.
Types of Overhead Cranes
There are four types of overhead cranes:
– Single Bridge Cranes
– Double Girder Bridge Cranes
– Gantry Cranes
– Jib Cranes
Bridge cranes are the largest capacity cranes in the overhead crane market. They span two elevated supports or runway beams and come in single or double girder designs(diseños de grua Chile).
Single bridge cranes are lighter and more flexible and use only one bridge beam. They can have top-running or underhung trollies(carro colgante)
A double-girder bridge crane is the best choice if the job requires considerable wide leg-width, the need to frequently move large loads, or you require high working speeds. It can either have a top-running or under-hung hoist.