Various KInds of Crawler-Mounted Cranes
Industrial wheel tractors in the 1920s, including those made by Fordson and McCormick-Deering were quickly adapted in order to be able to power a large range of equipment. Like for instance, half-swing shovels and cranes were manufactured by some companies around the engine and power train of the tractor and the wheels became replaced by crawlers.
Crawler tractors came into widespread use during the 1930s. Soon after, many manufacturers began making attachments for them, such as various lifting equipment devices.
Side-mounted booms for instance, were utilized mainly for pipe-laying at first and the equipment got the nickname "pipelayer." These equipments are now often used for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, in addition to outstanding lifting capacity, these machines are ideal for this application. What's more, swing booms that mounted on top of the engine compartment became available also.
LIke a crawler tractor, crawler cranes travel on crawler tracks. Because of their intense weight, these machinery do not move really fast. Normally, the crane is powered by one engine and may be controlled by 2 or more cable operated drums. The crawler cranes come equipped with a telescopic arm or a lattice boom which could be extended easily using hydraulics. The lattice boom needs to be assembled by hand by adding many sections.
Tower Cranes
Tower cranes are the ones found in big construction projects. These types of cranes are essential to be built and broken down on location. They have to be transported by truck each and every time they are relocated. These tower cranes are very tall. They enable construction crews to transport concrete building parts or heavy steel to the tops of tall buildings. Tower cranes use a hydraulic system to push every new crane part up into position and therefore, are self-erecting.