City Cranes
The city crane is a small 2-axle mobile crane that is designed for use in compact spaces where other cranes are not able to go. The city crane can work in between buildings and can travel through gates. During the 1990s, City cranes were developed as an answer to the increasing city density in the country of Japan. A lot of cities within Japan started cramming and building more structures in close proximity and it became necessary to have a crane that was capable of navigating through the tiny streets in Japan.
Essentially, the city crane is a small rough terrain crane. This crane is made to be road legal and is characterized by a single cab, a short chassis, the 2-axle design and independent steering on each axle. Furthermore, these types of machinery offered a retractable slanted boom. This style of retractable boom takes up much less space than a horizontal boom of comparable 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 multiple boom parts which are able to be added to enable the crane to reach up and over an obstacle. A standard truck crane needs separate power in order to move down and up, since it could not lower and raise using 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 in Australia. They are often used in high-rise construction projects. Kangaroo cranes are different in the business in the way that they are capable of raising themselves as the building they are working on increases in height. These specific cranes are anchored by a long leg. This leg runs down the building's elevator shaft.