In layman language, an EOT crane is a machine used to transfer heavy loads in a workspace. Functionally, it can be lowered, raised and moved up and down in attach and move manner.
The structure of an EOT crane comprises a runway beam, also known as the bridge that facilitates the movement of heavy objects from one place to another. It is for this reason that it is also known as an overhead crane. This runway beam is nothing but tracks or rails. It acts as a base on which the trolleys run along the rail's length.
Cranes facilitate the bi-directional movement of loads in four directions. It is required for storage, fabrication, loading and unloading of goods in indoor or outdoor environments. To operate an overhead bridge, an operator makes use of wired or wireless controls.
Broadly, there are two classifications of EOT cranes, put as:
Cranes running on top
The term "top running crane" applies to a crane that comprises a trolley that runs on top of rails mounted on a runway beam or a bridge and is supported by crane-specific columns. A bridge crane is benefitted from high lift height and low headroom. These cranes can be further classified as:
Single Girder: Single girder EOT crane made of a trolley and hoist frame, end truck, and a single bridge girder. The load on tyres is less; thus, it is a cost-effective option to bolster new structures with the need for replacement.
Double Girder: This comprises a trolley hoist unit, end trucks, and twin bridge girders, with the trolley's tracks mounted on top. A crane's hoist is installed over the bridge for a greater hook height in a double girder EOT crane.
Cranes running on bottom
It's also known as an underslung crane since the end trucks travel on the runway's bottom flange. It's typically hung from the ceiling because there aren't any additional columns needed to support the runway. An under-running crane has many benefits, such as no dedicated floor space required, saves the cost of the supporting system and can be used with inclined ceilings or various crane systems.
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