Different Types of Crawler-Mounted Cranes
In order to be able to power a large variety of equipment, industrial wheel tractors were modified during the 1920s, by McCormick-Deering and Fordson. For instance, half-swing shovels and cranes were made 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 in the 1930s. Immediately after, numerous manufacturers began making attachments for them, like for instance a variety of lifting equipment devices.
For instance, side-mounted booms were primarily utilized for pipe-laying where it gained its nickname the "pipelayer." These machines are often utilized now for attending to cleaning up railroad derailments. Due to their mobility, size and compact design, in addition to excellent lifting capacity, these machines are ideal for this use. Additionally, swing booms that 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 equipments can not move fast thanks to their intense weights. Normally, 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 that can be extended easily utilizing hydraulics. The lattice boom should be assembled by hand by adding multiple sections.
Tower Cranes
Typically found in large construction projects, tower cranes are required to be erected and broken down on location. They should be transported by truck each time they are relocated. These tower cranes are very tall. They enable construction crews to move heavy steel or concrete building components to the tops of tall buildings. Tower cranes utilize a hydraulic system to be able to push each and every new crane section up into position and thus, are self-erecting.