There are many different varieties of cranes available in
the market. But out of all those, the Overhead crane is the one that is used in
most of the industries for many purposes. It is basically comprises of parallel
runways with a traveling bridge spanning the gap. It has ahoist, the lifting
componentwhich travels along the bridge. If the bridge is rigidly supported on
two or more legs running on a fixed rail at ground level.
The most common application of this mechanical assistant is
in the steel industry. At every step of the manufacturing process, until it
leaves a factory as a finished product, steel is handled by it. Raw materials
are poured into a furnace by crane, hot metal is stored for cooling by an
overhead crane, the finished coils are lifted and loaded onto trucks and trains
by overhead crane, and the fabricator or stamper uses giant to handle the steel
in his factory. The automobile industry uses them for handling of raw
materials. Smaller workstation cranes handle lighter loads in a work-area, such
as CNC mill or saw.
Almost all paper mills use them for regular maintenance
requiring removal of heavy press rolls and other equipment. They are used in
the initial construction of paper machines because they facilitate installation
of the heavy cast iron paper drying drums and other massive equipment, some
weighing as much as 70 tons.
In many instances the cost of a bridge crane can be largely
offset with savings from not renting mobile cranes in the construction of a
facility that uses a lot of heavy process equipment. The above described are
some of the important uses of overhead cranes.