City Cranes
A small 2-axle mobile crane, known as a City crane is designed to be used in tight spaces where the usual cranes are unable to venture. City cranes are used to work inside buildings or to travel through gates. In the 1990s, City cranes were developed as an answer to the increasing city density within Japan. Many cities in Japan started cramming and building more structures in close proximity and it became necessary to have a crane that could navigate through the tiny streets in Japan.
Basically, the city crane is a small rough terrain crane. This crane is designed to be road legal and is characterized by a short chassis, a single cab, the 2-axle design and independent steering on each axle. Additionally, these equipments offered a retractable slanted boom. This kind of retractable boom takes up much less space compared to a horizontal boom of similar size would.
Conventional Truck Crane
Mobile cranes with a lattice boom are considered conventional truck crane booms. This model has a lighter hydraulic truck crane boom. There are many boom sections which could be added to allow the crane to reach up and over an obstacle. A regular truck crane requires separate power in order to move up and down, because it could not lower and raise utilizing 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 within Australia. They are normally used in high-rise construction projects. Kangaroo cranes are unique in the industry in the way that they can raise themselves as the building they are working on increases in height. These particular cranes are anchored using a long leg. This leg runs down the building's elevator shaft.