Tower cranes are being utilized regularly for huge building construction projects. They are required for the heavy lifting and placing of supplies and equipment. Tower cranes provide a unique configuration which provides numerous advantages over more traditional cranes. These benefits include: higher vertical lift, quiet electrical operation, increased capacities, and reduced space requirements.
Hammerhead Crane
A hammerhead crane is another design which is most typically associated with a tower crane. In this situation, a long horizontal jib is connected 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 travels along the length of the jib. The tower crane is capable of operating anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are usually assembled on site with the help of another crane. This provides a huge benefit in setup time and really saves time in equipment costs as well. Self-erecting cranes are normally remote-controlled from the ground, though there are several models which 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 several 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
Nearly all 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 tight areas. The majority of tower cranes have a fixed horizontal jib. The driver can lower or raise a luffing jib in order to enable the crane to swing in a reduced radius.