Different Types of Crawler-Mounted Cranes
In order to be able to power a huge variety of machines, industrial wheel tractors were adapted during the 1920s, by McCormick-Deering and Fordson. Like for instance, half-swing shovels and cranes 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. Immediately after, numerous manufacturers began making attachments for them, such as various lifting machine devices.
For example, side-mounted booms were primarily utilized for pipe-laying where it gained its nickname the "pipelayer." These machinery are now usually utilized for attending to cleaning up railroad derailments. Due to their mobility, size and compact design, as well as excellent lifting capacity, these machines are great for this application. In addition, swing booms which mounted on top of the engine compartment became available too.
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. Normally, the crane is powered by one engine and can be controlled by 2 or more cable operated drums. The crawler cranes are available with a lattice boom or a telescopic arm that could be extended easily using hydraulics. The lattice boom has to be manually assembled by adding many sections.
Tower Cranes
Tower cranes are the ones found in large construction projects. These kinds of cranes are necessary to be erected and broken down on location. They should be transported by truck each time they are relocated. These tower cranes are exceptionally tall. They allow construction crews to move concrete building components or heavy steel 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 hence, are self-erecting.