For huge building construction projects, tower cranes are utilized rather often. These machines are rather necessary for heavy lifting as well as placing supplies and equipment. Tower cranes offer a unique configuration which offers numerous benefits over more traditional cranes. These benefits comprise: quiet electrical operation, higher vertical lift, increased capacities, and reduced space requirements.
The hammerhead crane is frequently associated with a tower crane. The long horizontal jib is connected to a vertical tower, in this case. One end of the jib extends horizontally over the worksite and the other end of the jib acts as a counterweight. On the hammerhead crane, there is a trolley. This trolley holds the lifting cable and travels along the length of the jib. The tower crane can operate anywhere in the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are normally assembled on location with the assistance of a different crane. This provides a huge benefit in setup time and greatly saves time in equipment costs as well. Self-erecting cranes are usually remote-controlled from the ground, although there are some models which have an operator cab built onto the jib.
Self-erecting cranes are usually freestanding and this enables them the opportunity to be able to be moved around. There are several models which have a telescoping tower that enables the crane to work at various heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Most urban work environments do not have enough clearance or space for the jib to rotate freely without existing buildings blocking its movement. A luffing jib tower crane is ideal for such confined areas. Nearly all tower cranes have a fixed horizontal jib. The driver could lower or raise a luffing jib in order to allow the crane to swing in a reduced radius.