Different KInds of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, like those made by McCormick-Deering and Fordson were rapidly adapted in order to be able to power a huge variety of machinery. Like for instance, half-swing cranes and shovels were made by some companies around the power train and engine of the tractor and the wheels became replaced by crawlers.
During the 1930s, crawler tractors came into widespread use. Soon after, numerous manufacturers began manufacturing attachments for them, such as a range of lifting equipment devices.
Side-mounted booms for instance, were used mainly for pipe-laying at first and the machine got the nickname "pipelayer." These equipments are frequently utilized nowadays for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, in addition to exceptional lifting capacity, these kinds of equipments are ideal for this application. In addition, 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 could not move fast due to their intense weights. Usually, the crane could be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes are available with a lattice boom or a telescopic arm which can be extended easily using hydraulics. The lattice boom must be manually assembled by adding multiple sections.
Tower Cranes
Tower cranes are the ones found in big construction projects. These kinds of cranes are necessary 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 very 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 therefore, are self-erecting.