For big building construction projects, tower cranes are used rather often. These machines are rather required for heavy lifting as well as placing supplies and equipment. Tower cranes offer a different design which offers many advantages over more traditional cranes. These advantages comprise: higher vertical lift, quiet electrical operation, reduced space requirements and increased capacities.
Hammerhead Crane
The hammerhead crane is usually associated with a tower crane. The long horizontal jib is attached to a vertical tower, in this situation. 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 could travel along the length of the jib. The tower crane is capable of operating anywhere in the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are normally assembled on site with the assistance of a different crane. This provides a huge advantage in setup time and greatly saves time in equipment expenses too. Self-erecting cranes are usually remote-controlled from the ground, even though there are some models that have an operator cab built onto the jib.
Self-erecting cranes are generally freestanding and this allows them the opportunity to be able to be moved around. There are some models that have a telescoping tower that enables the crane to work at multiple heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Most urban work environments do not have enough space or clearance for the jib to rotate freely without existing buildings blocking its movement. A luffing jib tower crane is ideal for such confined spaces. Most 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.