City Cranes
A small 2-axle mobile crane, known as a City crane is designed to be utilized in tight spaces where the usual cranes are unable to venture. City cranes are used to work in buildings or to travel through gates. In the 1990s, City cranes were developed as an answer to the increasing urban density within the country of Japan. Numerous cities in the country started building and cramming more structures in close proximity and it became necessary to have a crane which was capable of navigating through the small areas of Japanese roads.
City cranes are essentially small rough terrain cranes. They are made to be road legal and are characterized by a short chassis, a single cab, independent steering on each axle, and a 2-axle design. Moreover, these kinds of machinery provided a retractable slanted boom. This kind of retractable boom takes up much less space compared to a horizontal boom of the same size would.
Conventional Truck Crane
A mobile crane that has a lattice boom is a regular truck crane boom. This unit is lighter compared to the boom on a hydraulic truck crane. There are multiple boom parts which could be added to allow the crane to reach over and up an obstacle. A typical truck crane needs separate power to be able to move up and down, since it could not lower and raise using hydraulic power.
Kangaroo Crane
A jumping crane or a kangaroo crane is a articulated-jib slewing crane that is made with an integrated bunker. These cranes were initially developed within Australia. They are normally used 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 particular cranes are anchored by a long leg. This leg runs down the building's elevator shaft.