Different KInds of Crawler-Mounted Cranes
In order to be able to power a huge range of equipment, industrial wheel tractors were adapted during the 1920s, by Fordson and McCormick-Deering. For example, half-swing shovels and cranes 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 throughout the 1930s. Immediately after, numerous manufacturers began manufacturing attachments for them, like a range of lifting machine devices.
For example, side-mounted booms were primarily used for pipe-laying where it gained its nickname the "pipelayer." These kinds of machinery are presently often utilized for attending to cleaning up railroad derailments. Because of their compact design, mobility and size, along with excellent lifting capacity, these types of equipments are great for this application. Moreover, 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 machinery could not move fast thanks to their intense weights. Normally, the crane is powered by one engine and could be controlled by 2 or more cable operated drums. The crawler cranes come equipped with a telescopic arm or a lattice boom that could be extended easily utilizing hydraulics. The lattice boom should be assembled by hand 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 need to be transported by truck each time they are relocated. These tower cranes are very tall. They enable construction crews to move heavy steel or concrete building components to the tops of tall buildings. Tower cranes use a hydraulic system to push each new crane section up into place and thus, are self-erecting.