Different KInds of Crawler-Mounted Cranes
Industrial wheel tractors in the 1920s, like those made by Fordson and McCormick-Deering were rapidly adapted in order to be able to power a huge variety of machines. For example, half-swing cranes and shovels were manufactured by some companies around the engine and power train of the tractor and the wheels became replaced by crawlers.
Crawler tractors came into widespread use throughout the 1930s. Immediately after, numerous manufacturers started manufacturing attachments for them, like for instance a variety of lifting equipment devices.
For example, side-mounted booms were primarily utilized for pipe-laying where it gained its nickname the "pipelayer." These machinery are usually utilized nowadays for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, in addition to outstanding lifting capacity, these kinds of machinery are great for this application. What's more, swing booms that mounted on top of the engine compartment became available also.
LIke a crawler tractor, crawler cranes travel on crawler tracks. Due to their intense weight, these machines do not move really fast. Typically, the crane is powered by one engine and may be controlled by 2 or more cable operated drums. The crawler cranes are available with a telescopic arm or a lattice boom that could be extended easily utilizing hydraulics. The lattice boom must be manually assembled by adding many sections.
Tower Cranes
Usually found in large construction projects, tower cranes are required to be built and broken down on location. They must be transported by truck each time they are relocated. These tower cranes are very tall. They allow construction crews to move concrete building parts or heavy steel to the tops of tall buildings. Tower cranes utilize a hydraulic system to push each and every new crane section up into position and hence, are self-erecting.