City Cranes
A small 2-axle mobile crane, known as a City crane is designed for use within tight areas where the standard cranes could not venture. City cranes are utilized to work within buildings or to travel through gates. In the 1990s, City cranes were developed as an answer to the increasing urban density in Japan. Lots of cities within Japan started cramming and building more structures in close proximity and it became necessary to have a crane which could navigate through the tiny areas of Japanese roads.
Essentially, 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, independent axle steering, and the 2-axle design. Moreover, these kinds of machinery offered a retractable slanted boom. This style of retractable boom takes up a lot less space compared to a horizontal boom of the same size would.
Typical Truck Crane
Mobile cranes with a lattice boom are considered standard truck crane booms. This unit has a lighter hydraulic truck crane boom. There are multiple boom sections which are able to 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 up and down, as it is not able to raise and lower with 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 often used in high-rise construction projects. Kangaroo cranes are different within the industry in the way that they could raise 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.