Other KInds of Crawler-Mounted Cranes
In order to be able to power a huge range of machinery, industrial wheel tractors were adapted in the 1920s, by Fordson and McCormick-Deering. Like for instance, half-swing shovels and cranes were manufactured 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 making attachments for them, such as various lifting equipment devices.
Side-mounted booms for instance, were used primarily for pipe-laying at first and the machinery got the nickname "pipelayer." These machines are currently normally used for attending to cleaning up railroad derailments. Due to their size, compact design and mobility, as well as exceptional lifting capacity, these equipments are ideal for this application. Additionally, swing booms that mounted on top of the engine compartment also became available.
Crawler cranes are like the crawler tractor in that it travels along crawler tracks. These machines could not move fast due to their intense weights. Normally, the crane is powered by one engine and may be controlled by 2 or more cable operated drums. The crawler cranes come equipped with a telescopic arm or a lattice boom that is easy to extend by using hydraulics. The lattice boom has to be manually assembled by adding multiple sections.
Tower Cranes
Normally found in big construction projects, tower cranes are required to be built and broken down on location. They should be transported by truck each and every time they are relocated. These tower cranes are exceptionally tall. They enable construction crews to transport heavy steel or concrete building parts to the tops of tall buildings. Tower cranes utilize a hydraulic system to push each and every new crane part up into position and thus, are self-erecting.