City Cranes
A small 2-axle mobile crane, known as a City crane is designed for use within compact spaces where the standard cranes could not venture. City cranes are utilized to work in buildings or to travel through gates. During the 1990s, City cranes were developed as an answer to the increasing urban density within Japan. Many cities in Japan began cramming and building more structures near each other and it became necessary to have a crane which can navigate through the tiny roads 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, independent axle steering, and the 2-axle design. Additionally, these machinery 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
A mobile crane that has a lattice boom is a typical truck crane boom. This unit is lighter than the hydraulic truck crane boom. There are many boom sections that could be added to enable the crane to reach up and over an obstacle. A conventional truck crane requires separate power to be able to move down and up, as it could not lower and raise utilizing 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 initially developed in Australia. They are usually used in high-rise construction projects. Kangaroo cranes are unique within the industry in the way that they are capable of raising themselves as the building they are working on increases in height. These particular cranes are anchored using a long leg. This leg runs down an elevator shaft of the building they are constructing.