Other Types of Crawler-Mounted Cranes
In order to be able to power a large range of machines, industrial wheel tractors were adapted in the 1920s, by Fordson and McCormick-Deering. Like for instance, 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.
In the 1930s, crawler tractors came into widespread use. Immediately after, numerous manufacturers started making attachments for them, including a variety of lifting equipment devices.
For instance, side-mounted booms were mainly used for pipe-laying where it gained its nickname the "pipelayer." These kinds of machinery are often utilized nowadays for attending to cleaning up railroad derailments. Due to their size, compact design and mobility, along with outstanding lifting capacity, these equipments are great for this use. What's more, 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 can not move fast thanks to their intense weights. Typically, the crane may be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes come outfitted with a lattice boom or a telescopic arm that could be extended easily utilizing hydraulics. The lattice boom must be manually assembled by adding many sections.
Tower Cranes
Tower cranes are those found in large construction projects. These types of cranes are necessary to be built and broken down on location. They should be transported by truck each time they are relocated. These tower cranes are exceptionally tall. They allow construction crews to transport heavy steel or concrete building parts to the tops of tall buildings. Tower cranes utilize a hydraulic system to push each new crane part up into position and hence, are self-erecting.