Other Types of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, such as those manufactured by Fordson and McCormick-Deering were quickly adapted in order to be able to power a huge variety of machines. For instance, half-swing cranes and shovels were made by several 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. Immediately after, numerous manufacturers began manufacturing attachments for them, including various lifting equipment devices.
Side-mounted booms for instance, were utilized mainly for pipe-laying at first and the machine got the nickname "pipelayer." These types of machinery are frequently utilized now for attending to cleaning up railroad derailments. Due to their mobility, size and compact design, as well as outstanding lifting capacity, these kinds of machines are great for this application. Furthermore, swing booms that mounted on top of the engine compartment became available too.
Crawler cranes are similar to the crawler tractor in that it travels along crawler tracks. These machinery can not move fast due to their intense weights. Normally, the crane can be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes come outfitted with a telescopic arm or a lattice boom which could be extended easily using hydraulics. The lattice boom has to be assembled manually by adding multiple sections.
Tower Cranes
Normally found in big construction projects, tower cranes are required 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 components to the tops of tall buildings. Tower cranes utilize a hydraulic system in order to push each and every new crane section up into place and thus, are self-erecting.