Different Types of Crawler-Mounted Cranes
Industrial wheel tractors in the 1920s, including those manufactured by Fordson and McCormick-Deering were rapidly adapted in order to be able to power a huge variety of machinery. For example, 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.
Crawler tractors came into widespread use in the 1930s. Immediately after, many manufacturers began making attachments for them, including various lifting equipment devices.
For example, side-mounted booms were primarily used for pipe-laying where it gained its nickname the "pipelayer." These machinery are currently normally used for attending to cleaning up railroad derailments. Because of their size, compact design and mobility, as well as excellent lifting capacity, these types of machines are ideal for this use. What's more, swing booms that mounted on top of the engine compartment also became available.
Crawler cranes are similar to the crawler tractor in that it travels along crawler tracks. These machinery can not move fast thanks to their intense weights. Typically, 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 must be assembled manually by adding multiple sections.
Tower Cranes
Tower cranes are those found in big construction projects. These types of cranes are necessary to be built and broken down on location. They need to be transported by truck every 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 be able to push every new crane section up into place and hence, are self-erecting.