Other KInds of Crawler-Mounted Cranes
In order to be able to power a huge variety of equipment, industrial wheel tractors were adapted in the 1920s, by McCormick-Deering and Fordson. Like for example, half-swing shovels and cranes were manufactured by some companies around the tractor's power train and engine and the wheels became replaced by crawlers.
Crawler tractors came into widespread use in the 1930s. Immediately after, numerous manufacturers started manufacturing attachments for them, like for example a range of lifting equipment devices.
Side-mounted booms for example, were utilized mainly for pipe-laying at first and the equipment got the nickname "pipelayer." These kinds of equipments are often used now for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, along with outstanding lifting capacity, these kinds of equipments are ideal for this application. What's more, swing booms that mounted on top of the engine compartment became available also.
Crawler cranes are like the crawler tractor in that it travels along crawler tracks. These machinery 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 equipped with a telescopic arm or a lattice boom which could be extended easily utilizing hydraulics. The lattice boom should be assembled manually by adding many sections.
Tower Cranes
Tower cranes are the ones found in big construction projects. These types of cranes are essential to be built and broken down on location. They must be transported by truck every time they are relocated. These tower cranes are exceptionally tall. They enable construction crews to transport concrete building parts or heavy steel to the tops of tall buildings. Tower cranes use a hydraulic system to be able to push every new crane section up into place and therefore, are self-erecting.