For huge building construction projects, tower cranes are utilized rather frequently. These machines are quite required for heavy lifting as well as placing supplies and equipment. Tower cranes provide a different design which offers a lot of advantages over more conventional cranes. These benefits 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 case. 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 travels along the length of the jib. The tower crane could operate anywhere in the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on location with the help 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, though there are some models that have an operator cab built onto the jib.
The self-erecting crane is normally freestanding to allow them the opportunity to be moved around. There are some models which have a telescoping tower that allows the crane to work at multiple heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Nearly all urban work environments do not have enough clearance or space 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 could raise or lower a luffing jib in order to enable the crane to swing in a reduced radius.