Overall Structure:
Top Running Cranes feature a large horizontal beam, known as the bridge, that spans the workspace.
This bridge travels along runways or rails mounted on top of the building's structure or dedicated support structures.
A trolley and hoist move along this horizontal beam to lift and transport objects. Components: Brigde :
This is the main horizontal beam that spans the width of the operating area.
It serves as the support structure for the trolley and hoist.
It can be either a single girder (for lighter loads) or a double girder (for heavier loads). Runways :
These are the rails mounted on top of the support structures.
They provide the track for the bridge to travel along.
They enable the crane to move along the length of the workspace. Trolley:
This is the unit that travels along the bridge.
It serves as the support structure for the hoist.
It allows for horizontal movement of the load along the bridge. Hoist :
This is the lifting mechanism that raises and lowers the load.
It can utilize wire ropes, chains, or other lifting devices End Carriage :
These are the wheel assembles that drive the crane along the runway rails.
Overhead Crane Types
Find a Fabrication Drawing of Overhead Travelling Cranes