Other Types of Crawler-Mounted Cranes
Industrial wheel tractors in the 1920s, such as those made by Fordson and McCormick-Deering were quickly adapted in order to be able to power a large range of equipment. For example, half-swing cranes and shovels were made by some companies around the tractor's power train and engine and the wheels became replaced by crawlers.
Crawler tractors came into widespread use throughout the 1930s. Soon after, many manufacturers started making attachments for them, such as various lifting machine devices.
For example, side-mounted booms were mainly utilized for pipe-laying where it gained its nickname the "pipelayer." These machinery are usually utilized today for attending to cleaning up railroad derailments. Due to their compact design, mobility and size, as well as excellent lifting capacity, these machines are ideal for this use. Moreover, swing booms that mounted on top of the engine compartment became available also.
Similar to a crawler tractor, crawler cranes travel on crawler tracks. Because of their intense weight, these machines do not move very fast. Typically, the crane may be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes come equipped with a lattice boom or a telescopic arm that is easy to extend by using hydraulics. The lattice boom should be assembled by hand by adding multiple sections.
Tower Cranes
Tower cranes are the ones found in big construction projects. These kinds of cranes are essential to be erected and broken down on location. They need to be transported by truck every time they are relocated. These tower cranes are exceptionally tall. They enable construction crews to move heavy steel or concrete building parts to the tops of tall buildings. Tower cranes use a hydraulic system to push each new crane section up into place and thus, are self-erecting.