Overall Structure:
A bridge crane essentially consists of a horizontal beam, known as the
bridge, that traverses across a workspace.This bridge moves along
runways or rails that are typically positioned overhead.A trolley then
moves along this bridge, and the hoist, which is the lifting mechanism,
is attached to this trolley. Components: Bridge :
This is the main horizontal beam that spans the width of the area
where the crane operates.It is responsible for the lateral movement of the crane.
Bridges can be either single-girder (for lighter loads) or double-girder (for heavier loads). Runways :
These are the fixed rails that the bridge travels along.
They are usually mounted to the building's structure.
Runways define the length of the crane's travel. Trolley:
This is a unit that moves along the bridge and carries the hoist.
It provides the horizontal movement of the load along the bridge. Hoist :
This is the lifting mechanism that raises and lowers the load.
It can use wire ropes, chains, or other lifting devices.
Overhead Crane Types
Find a Fabrication Drawing of Overhead Travelling Cranes