City Cranes
The city crane is a small 2-axle mobile crane that is designed to be used in compact areas where other cranes are not able to go. The city crane can work in between buildings and can travel through gates. During the 1990s, City cranes were developed as a solution to the increasing city density in Japan. Lots of cities within the country started cramming and building more structures in close proximity and it became necessary to have a crane that can navigate through the tiny streets in Japan.
Essentially, the city crane is a small rough terrain crane. This crane is made to be road legal and is characterized by a single cab, a short chassis, independent axle steering, and the 2-axle design. Furthermore, these machinery provided a retractable slanted boom. This type of retractable boom takes up a lot less space than a horizontal boom of similar size would.
Typical Truck Crane
A mobile crane that has a lattice boom is a regular truck crane boom. This model is lighter than the hydraulic truck crane boom. There are many boom parts that could be added to enable the crane to reach up and over an obstacle. A typical truck crane needs separate power in order to move up and down, because it is not able to raise and lower with hydraulic power.
Kangaroo Crane
A kangaroo crane or jumping crane is a articulated-jib slewing crane that is made with an integrated bunker. These cranes were first developed within Australia. They are normally used in high-rise construction projects. Kangaroo cranes are unique within the industry in the way that they are capable of raising themselves as the building they are working on increases in height. These particular cranes are anchored using a long leg. This leg runs down an elevator shaft of the building they are constructing.