Tower cranes are being utilized often for big building construction projects. They are needed for the heavy lifting and placing of materials and machinery. Tower cranes provide a different design which offers lots of benefits over more traditional cranes. These advantages comprise: quiet electrical operation, higher vertical lift, reduced space requirements and increased capacities.
Hammerhead Crane
The hammerhead crane is frequently associated with a tower crane. The long horizontal jib is connected to a vertical tower, in this case. 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 could operate anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on site with the assistance of another crane. This greatly 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, 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 which enables the crane to work at various heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Most 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 great for such tight spaces. Nearly all tower cranes have a fixed horizontal jib. The driver is able to raise or lower a luffing jib in order to allow the crane to swing in a reduced radius.