For large building construction projects, tower cranes are utilized rather often. These equipments are rather essential for heavy lifting as well as placing supplies and equipment. Tower cranes offer a unique design that provides many benefits over more conventional cranes. These advantages consist of: quiet electrical operation, higher vertical lift, reduced space requirements and increased capacities.
Hammerhead Crane
A hammerhead crane is a different design which 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. On the hammerhead crane, there is a trolley. This trolley holds the lifting cable and can travel along the length of the jib. The tower crane is capable of operating anywhere within the jib's radius.
Self-Erecting Tower Cranes
A self-erecting crane is capable of completely assembling itself at the jobsite without any help from another crane. This really saves time in equipment expenses and provides a huge advantage in setup time as well. Self-erecting cranes are usually remote-controlled from the ground, although there are some models that 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 some models which have a telescoping tower which enables the crane to work at various heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Normally, within urban work environments, there is not enough clearance or space for the jib to rotate freely without being blocked by existing buildings. A luffing jib tower crane is great for such tight areas. Most tower cranes have a fixed horizontal jib. The driver is able to lower or raise a luffing jib in order to enable the crane to swing in a reduced radius.