City Cranes
A small 2-axle mobile crane, referred to as a City crane is designed for use within tight areas where the standard cranes could not venture. City cranes are used to work within buildings or to 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 near each other and it became necessary to have a crane which can navigate through the small areas of Japanese streets.
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 type of retractable boom takes up much less space compared to a horizontal boom of similar size would.
Conventional Truck Crane
A mobile crane that has a lattice boom is a standard truck crane boom. This model is lighter compared to the hydraulic truck crane boom. There are many boom parts which could be added to allow the crane to reach over and up an obstacle. A conventional truck crane needs separate power in order to move up and down, since it is not able to lower and raise with hydraulic power.
Kangaroo Crane
A kangaroo crane or jumping crane is a articulated-jib slewing crane which is made with an integrated bunker. These cranes were initially developed in Australia. They are usually utilized in high-rise construction projects. Kangaroo cranes are different in the industry in the way that they could raise themselves while 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.