For big building construction projects, tower cranes are used rather often. These machinery are rather needed for heavy lifting as well as positioning supplies and equipment. Tower cranes provide a different design which provides many benefits over more traditional cranes. These benefits comprise: quiet electrical operation, higher vertical lift, increased capacities, and reduced space requirements.
Hammerhead Crane
A hammerhead crane is another configuration that is most typically associated with a tower crane. In this situation, a long horizontal jib is attached to a vertical tower. One end of the jib acts as a counterweight and the other end of the jib extends horizontally over the worksite. There is a trolley on the hammerhead crane. This trolley holds the lifting cable and travels along the length of the jib. The tower crane is capable of operating anywhere in the jib's radius.
Self-Erecting Tower Cranes
A self-erecting crane is capable of completely assembling itself at the jobsite without any assistance from another crane. This greatly saves time in equipment expenses and provides a huge advantage in setup time too. Self-erecting cranes are normally remote-controlled from the ground, even though there are several models which have an operator cab built onto the jib.
Self-erecting cranes are usually freestanding and this allows them the opportunity to be able to be moved around. There are some models which have a telescoping tower that enables the crane to work at multiple heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Usually, in urban work settings, there is not enough space or clearance for the jib to rotate freely without being blocked by existing buildings. A luffing jib tower crane is ideal for such confined spaces. Most tower cranes have a fixed horizontal jib. The operator could lower or raise a luffing jib in order to enable the crane to swing in a reduced radius.