City Cranes
The city crane is a small 2-axle mobile crane which is designed to be used in tight spaces where other cranes could not go. The city crane can work in between buildings and could travel through gates. In the 1990s, City cranes were developed as an answer to the growing urban density in the country of Japan. Numerous cities within the nation started cramming and building more structures near each other and it became necessary to have a crane that could navigate through the small streets in Japan.
Basically, the city crane is a small rough terrain crane. This crane is made to be road legal and is characterized by a short chassis, a single cab, independent axle steering, and the 2-axle design. Furthermore, these types of machines provided a slanted retractable boom. This style of retractable boom takes up much less space than a horizontal boom of the same size would.
Standard Truck Crane
A mobile crane which has a lattice boom is a standard truck crane boom. This model is lighter than the hydraulic truck crane boom. There are many boom sections which are able to be added to allow the crane to reach over and up an obstacle. A conventional truck crane needs separate power in order to move down and up, as it could not raise and lower utilizing hydraulic power.
Kangaroo Crane
A kangaroo crane or jumping crane is a articulated-jib slewing crane which is designed with an integrated bunker. These cranes were first developed in Australia. They are often used in high-rise construction projects. Kangaroo cranes are different within the industry in the way that they can raise themselves as 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.