City Cranes
A small 2-axle mobile crane, known as a City crane is designed to be used within tight spaces where the standard 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 a solution to the increasing urban density within Japan. Many cities within the nation began cramming and building more structures near each other and it became necessary to have a crane which was capable of navigating through the small streets in Japan.
City cranes are essentially small rough terrain cranes. They are designed to be road legal and are characterized by a single cab, a short chassis, a 2-axle design and independent steering on each axle. Furthermore, these machines offered a slanted retractable boom. This style of retractable boom takes up a lot less space than a horizontal boom of comparable size would.
Standard Truck Crane
Mobile cranes with a lattice boom are considered standard truck crane booms. This unit has a lighter boom on a hydraulic truck crane. There are multiple boom sections that could be added to allow the crane to reach up and over an obstacle. A conventional truck crane needs separate power to be able to move up and down, since it could not raise and lower with hydraulic power.
Kangaroo Crane
A kangaroo crane or jumping crane is a articulated-jib slewing crane that is designed 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 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.