Other KInds of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, including those manufactured by Fordson and McCormick-Deering were quickly adapted in order to be able to power a large range of machinery. Like 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.
During the 1930s, crawler tractors came into widespread use. Soon after, many manufacturers started manufacturing attachments for them, like a range of lifting machine devices.
Side-mounted booms for instance, were utilized primarily for pipe-laying at first and the equipment got the nickname "pipelayer." These types of equipments are presently usually used for attending to cleaning up railroad derailments. Due to their compact design, mobility and size, along with outstanding lifting capacity, these machines are great for this application. Moreover, swing booms which 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 machines can not move fast thanks to their intense weights. Usually, the crane could be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes come outfitted with a lattice boom or a telescopic arm which can be extended easily using hydraulics. The lattice boom should be manually assembled by adding many sections.
Tower Cranes
Normally found in large construction projects, tower cranes are required to be built and broken down on location. They should be transported by truck each time they are relocated. These tower cranes are very tall. They enable construction crews to move heavy steel or concrete building components to the tops of tall buildings. Tower cranes use a hydraulic system in order to push each new crane part up into place and hence, are self-erecting.