Tower cranes are being utilized frequently for big building construction projects. They are needed for the heavy lifting and positioning of materials and machinery. Tower cranes provide a unique configuration which provides numerous benefits over more traditional cranes. These advantages comprise: quiet electrical operation, higher vertical lift, increased capacities, and reduced space requirements.
Hammerhead Crane
A hammerhead crane is a different design which is most typically associated with a tower crane. In this case, a long horizontal jib is attached to a vertical tower. One end of the jib extends horizontally over the worksite and the other end of the jib acts as a counterweight. 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 is capable of operating anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on site with the assistance of a different crane. This provides a huge advantage in setup time and really saves time in equipment expenses too. Self-erecting cranes are normally remote-controlled from the ground, though there are some models that have an operator cab built onto the jib.
The self-erecting crane is generally freestanding to allow them the opportunity to be moved around. There are several models which have a telescoping tower which allows the crane to work at various heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
The majority of urban work environments do not have enough space or clearance for the jib to freely rotate without existing buildings blocking its movement. A luffing jib tower crane is ideal for such confined spaces. Nearly all tower cranes have a fixed horizontal jib. The driver could lower or raise a luffing jib in order to enable the crane to swing in a reduced radius.