City Cranes
The city crane is a small 2-axle mobile crane that is designed to be used in tight spaces 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 growing urban density in Japan. Many cities within Japan began cramming and building more structures near each other and it became necessary to have a crane which can navigate through the small spaces of Japanese streets.
Basically, the city crane is a small rough terrain crane. This crane is designed to be road legal and is characterized by a single cab, a short chassis, the 2-axle design and independent steering on each axle. Moreover, these machines provided a retractable slanted boom. This style of retractable boom takes up much less space compared to a horizontal boom of comparable size would.
Conventional Truck Crane
Mobile cranes with a lattice boom are considered typical truck crane booms. This unit has a lighter hydraulic truck crane boom. There are multiple boom parts that could be added to allow the crane to reach up and over an obstacle. A typical truck crane needs separate power to be able to move down and up, since it could not raise and lower using hydraulic power.
Kangaroo Crane
A jumping crane is another name for a kangaroo crane. This model is an articulated-jib slewing crane with an integrated bunker. These cranes started in Australia. They are usually utilized 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 specific cranes are anchored utilizing a long leg. This leg runs down an elevator shaft of the building they are constructing.