11/27/10

Overhead Crane


overhead crane
Overhead crane is fixed crane and similar in its work to gantry crane. From its name, this type of cranes is fixed over the head of the purpose needed to be lifted. The mechanism of lifting and moving weights relies on the upper part of the crane called trolley 

This trolley carries the operating mechanism and runs on single or double beam. The beams are supported by the sides of the crane. These cranes are capable of lifting very heavy weights and huge volumes

So we can easily see them in ports all over the world for loading and unloading ships, the ships get in position and the cranes do their jobs. Also they are used in heavy industries factories like steel mills. The overhead crane can be built inside the construction. Being fixed gives the crane great stability, but some cranes builders add wheels to them for more flexibility. There are small size of these cranes that they can be used in a house workshop and small business. Also they are called the suspended cranes