Various Types of Crawler-Mounted Cranes
In order to be able to power a large range of machinery, industrial wheel tractors were adapted during the 1920s, by Fordson and McCormick-Deering. Like for example, half-swing cranes and shovels were manufactured by several companies around the power train and engine of the tractor and the wheels became replaced by crawlers.
During the 1930s, crawler tractors came into widespread use. Soon after, numerous manufacturers started manufacturing attachments for them, like various lifting equipment devices.
Side-mounted booms for example, were used primarily for pipe-laying at first and the equipment got the nickname "pipelayer." These machinery are presently normally utilized for attending to cleaning up railroad derailments. Due to their size, compact design and mobility, along with exceptional lifting capacity, these types of equipments are ideal for this use. Furthermore, swing booms which 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 due to their intense weights. Normally, the crane could be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes are available with a lattice boom or a telescopic arm which is easy to extend by utilizing hydraulics. The lattice boom should be manually assembled by adding many sections.
Tower Cranes
Tower cranes are those found in large construction projects. These types of cranes are essential to be built and broken down on location. They have to be transported by truck each time they are relocated. These tower cranes are exceptionally 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 be able to push each new crane section up into position and thus, are self-erecting.