The city crane is a small 2-axle mobile crane that is designed to be used in tight areas where other cranes could not go. The city crane can work in between buildings and could travel through gates. During the 1990s, City cranes were developed as a solution to the increasing city density within Japan. Many cities in Japan began building and cramming more structures in close proximity and it became necessary to have a crane that was capable of navigating through the tiny roads in Japan.
City cranes are basically small rough terrain cranes. They are designed to be road legal and are characterized by a single cab, a short chassis, independent steering on each axle, and a 2-axle design. Moreover, these machines offered a retractable slanted boom. This type of retractable boom takes up much less space compared to a horizontal boom of comparable size would.
Typical Truck Crane
Mobile cranes with a lattice boom are considered regular truck crane booms. This model has a lighter boom on a hydraulic truck crane. There are many boom sections that could be added to allow the crane to reach up and over an obstacle. A standard truck crane requires separate power to be able to move down and up, since it could not lower and raise utilizing hydraulic power.
A jumping crane is another name for a kangaroo crane. This unit is an articulated-jib slewing crane with an integrated bunker. These cranes originated within Australia. They are often utilized in high-rise construction projects. Kangaroo cranes are unique in the industry in the way that they are capable of raising themselves while the building they are working on increases in height. These specific cranes are anchored using a long leg. This leg runs down the building's elevator shaft.