For big building construction projects, tower cranes are utilized rather often. These machines are quite necessary for heavy lifting as well as positioning materials and equipment. Tower cranes provide a different configuration that provides many 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 that is most typically associated with a tower crane. In this case, a long horizontal jib is connected 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. On the hammerhead crane, there is a trolley. This trolley has the lifting cable and can travel along the length of the jib. The tower crane can operate anywhere within the jib's radius.
Self-Erecting Tower Cranes
Self-erecting cranes are often assembled on location with the assistance of another crane. This really saves time in equipment expenses and provides a huge benefit in setup time too. Self-erecting cranes are often remote-controlled from the ground, even if there are some models that 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 multiple heights without the need to reconfigure the tower.
Luffing Jib Tower Crane
Often, in urban work environments, there is not enough clearance or space for the jib to freely rotate without being blocked by existing buildings. A luffing jib tower crane is ideal for such tight spaces. The majority of tower cranes have a fixed horizontal jib. The operator is able to lower or raise a luffing jib in order to allow the crane to swing in a reduced radius.