City Cranes
The city crane is a small 2-axle mobile crane that is designed for use in compact areas where other cranes could not go. The city crane could work in between buildings and can travel through gates. In the 1990s, City cranes were developed as an answer to the growing city density in the country of Japan. Lots of cities within Japan began building and cramming more structures in close proximity and it became necessary to have a crane which could navigate through the small areas of Japanese streets.
City cranes are essentially small rough terrain cranes. They are made to be road legal and are characterized by a single cab, a short chassis, a 2-axle design and independent steering on each axle. In addition, these equipments provided a slanted retractable boom. This type of retractable boom takes up a lot less space compared to a horizontal boom of the same size would.
Standard Truck Crane
A mobile crane which has a lattice boom is a conventional truck crane boom. This unit is lighter than the boom on a hydraulic truck crane. There are multiple boom parts that are able to be added to allow the crane to reach over and up an obstacle. A regular truck crane requires separate power in order to move up and down, because it is not able to raise and lower with 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 first developed in Australia. They are normally used in high-rise construction projects. Kangaroo cranes are different in the industry in the way that they could raise themselves as the building they are working on increases in height. These particular cranes are anchored by a long leg. This leg runs down an elevator shaft of the building they are constructing.