Other KInds 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. For instance, half-swing cranes and shovels were made by some companies around the tractor's engine and power train and the wheels became replaced by crawlers.
Crawler tractors came into widespread use throughout the 1930s. Soon after, many manufacturers started manufacturing attachments for them, such as a range of lifting machine devices.
For example, side-mounted booms were mainly used for pipe-laying where it gained its nickname the "pipelayer." These types of equipments are usually utilized these days for attending to cleaning up railroad derailments. Due to their size, compact design and mobility, as well as exceptional lifting capacity, these kinds of machines are great for this use. Furthermore, swing booms which 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 can be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes are available with a telescopic arm or a lattice boom which is easy to extend by utilizing hydraulics. The lattice boom has to be assembled manually by adding many sections.
Tower Cranes
Tower cranes are those found in large construction projects. These types of cranes are necessary to be erected 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 move 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 place and therefore, are self-erecting.