Overhead crane

An overhead crane consists of two parallel rails seated on longitudinal I-beams attached to opposite steel columns by means of brackets.

It can also be used to gain lifting height because the hoist of the double girder overhead crane is placed on the beams and the hook fits between them.

In 1876 Sampson Moore in England designed and supplied the first ever electric overhead crane, which was used to hoist guns at the Royal Arsenal in Woolwich, London.

[1] Since that time Alliance Machine, now defunct, holds an AISE citation for one of the earliest cranes in the USA market.

These built up hoists are used for heavy-duty applications such as steel coil handling and for users desiring long life and better durability.

This offers improvement over a jib crane by making possible a longer reach and eliminating lateral strains on the building walls.

At every step of the manufacturing process, until it leaves a factory as a finished product, metal is handled by an overhead crane.

Almost all paper mills use bridge cranes for regular maintenance, needing removal of heavy press rolls and other equipment.

An overhead crane, featuring runways, bridge, and hoist in a traditional industrial environment.
Overhead crane at the Skanska precast concrete factory in Hjärup , Sweden.
Gantry -style overhead cranes of the Hainaut quarry in Soignies , Belgium .
Longest overhead crane to build the longest wind turbines at LM Windpower.
A remarkable engineering effort was made by Protech in the province of Quebec, Canada, to build these giant overhead cranes.
Example of an overhead crane being used to lift heavy rolls