Different Types of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, like those manufactured by McCormick-Deering and Fordson were quickly modified in order to be able to power a huge range of equipment. Like for example, half-swing cranes and shovels were made by several companies around the engine and power train 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, like for instance a range of lifting machine devices.
For example, side-mounted booms were primarily used for pipe-laying where it gained its nickname the "pipelayer." These kinds of machinery are often used nowadays for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, as well as excellent lifting capacity, these types of machinery are ideal for this application. Additionally, 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 equipments can not move fast thanks to their intense weights. Typically, the crane is powered by one engine and may be controlled by 2 or more cable operated drums. The crawler cranes are available with a lattice boom or a telescopic arm that is easy to extend by using hydraulics. The lattice boom has to be manually assembled by adding many sections.
Tower Cranes
Tower cranes are the ones found in big construction projects. These types of cranes are essential to be erected and broken down on location. They must be transported by truck every time they are relocated. These tower cranes are exceptionally tall. They enable construction crews to move concrete building components or heavy steel to the tops of tall buildings. Tower cranes use a hydraulic system to push each and every new crane part up into position and therefore, are self-erecting.