For large building construction projects, tower cranes are used quite frequently. These machinery are quite needed for heavy lifting as well as positioning supplies and equipment. Tower cranes provide a different configuration which offers a lot of advantages over more traditional cranes. These benefits comprise: higher vertical lift, quiet electrical operation, reduced space requirements and increased capacities.
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 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 has the lifting cable and travels along the length of the jib. The tower crane could operate anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on site with the help of a different crane. This provides a huge benefit in setup time and greatly saves time in equipment expenses as well. Self-erecting cranes are normally remote-controlled from the ground, although there are several models that have an operator cab built onto the jib.
Self-erecting cranes are normally 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
The majority of urban work settings 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 areas. Nearly all tower cranes have a fixed horizontal jib. The operator can raise or lower a luffing jib in order to allow the crane to swing in a reduced radius.