Different KInds of Crawler-Mounted Cranes
Industrial wheel tractors in the 1920s, like those built by Fordson and McCormick-Deering were rapidly modified in order to be able to power a huge range of machines. Like for example, half-swing cranes and shovels were manufactured by several companies around the engine and power train of the tractor and the wheels became replaced by crawlers.
Crawler tractors came into widespread use during the 1930s. Immediately after, numerous manufacturers started manufacturing attachments for them, such as a variety of lifting equipment devices.
For instance, side-mounted booms were primarily utilized for pipe-laying where it gained its nickname the "pipelayer." These kinds of machinery are now usually used for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, as well as outstanding lifting capacity, these machines are ideal for this application. As well, swing booms which mounted on top of the engine compartment also became available.
LIke a crawler tractor, crawler cranes travel on crawler tracks. Due to their intense weight, these equipments do not move really fast. Normally, the crane is powered by one engine and can be controlled by 2 or more cable operated drums. The crawler cranes are available with a lattice boom or a telescopic arm that can be extended easily using hydraulics. The lattice boom must be assembled manually by adding many sections.
Tower Cranes
Tower cranes are the ones found in large construction projects. These kinds of cranes are essential 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 enable construction crews to transport concrete building components or heavy steel to the tops of tall buildings. Tower cranes use a hydraulic system to push each and every new crane part up into place and therefore, are self-erecting.