City Cranes
The city crane is a small 2-axle mobile crane that is designed to be utilized in compact spaces where other cranes are not able to 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 increasing city density within Japan. Numerous cities within Japan began cramming and building more structures near each other and it became necessary to have a crane that was capable of navigating through the small spaces of Japanese streets.
Essentially, the city crane is a small rough terrain crane. This crane is designed to be road legal and is characterized by a single cab, a short chassis, the 2-axle design and independent steering on each axle. Additionally, these kinds of machines offered a slanted retractable boom. This style of retractable boom takes up much less space than a horizontal boom of the same size would.
Conventional Truck Crane
Mobile cranes with a lattice boom are considered regular truck crane booms. This model has a lighter boom on a hydraulic truck crane. There are many boom sections which are able to be added to allow the crane to reach over and up an obstacle. A standard truck crane requires separate power to be able to move up and down, as it is not able to lower and raise 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 within Australia. They are often utilized in high-rise construction projects. Kangaroo cranes are different 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 utilizing a long leg. This leg runs down an elevator shaft of the building they are constructing.