Different KInds of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, such as those manufactured by Fordson and McCormick-Deering were rapidly modified in order to be able to power a huge variety of machines. Like for instance, half-swing shovels and cranes were made by some companies around the tractor's engine and power train and the wheels became replaced by crawlers.
Throughout the 1930s, crawler tractors came into widespread use. Immediately after, many manufacturers started manufacturing attachments for them, including a variety of lifting equipment devices.
For example, side-mounted booms were mainly used for pipe-laying where it gained its nickname the "pipelayer." These types of equipments are often utilized today for attending to cleaning up railroad derailments. Due to their size, compact design and mobility, as well as exceptional lifting capacity, these kinds of machinery are great for this use. In addition, swing booms which mounted on top of the engine compartment also became available.
Similar to a crawler tractor, crawler cranes travel on crawler tracks. Due to their intense weight, these equipments do not move very fast. Normally, the crane could 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 which could be extended easily utilizing hydraulics. The lattice boom needs to be manually assembled by adding multiple sections.
Tower Cranes
Tower cranes are those found in big construction projects. These kinds of cranes are essential to be erected and broken down on location. They must be transported by truck each and every time they are relocated. These tower cranes are exceptionally tall. They enable 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.