cranes are one of the most important device that is used for the
construction of huge buildings. They are a common fixture at any major
construction site. They are used to lift steel, concrete, large tools
like acetylene torches and generators, and a wide variety of other
For the construction of tall buildings they are indispensable machine.
The important components of the tower crane are horizontal boom, long
and short arm, mounted cabin, lifting hook, etc.
Across the top of the
tower horizontal tower is balanced asymmetrically. Counterweight of the
concrete block is balanced by short arm whereas long arm carries the
lifting gear. The lifting hook of the crane is set into motion by the
pulleys. The crane is operated by the operated either from the crane
cabin, or from the ground using radio remote control. The boom which is
mounted on slewing bearing is rotated by means of a slewing motor.
Tower cranes are utilized for construction of various projects like :
- Sky scrapers
- Multistory buildings
- Convention centers
- Huge industrial projects etc.