Different KInds of Crawler-Mounted Cranes
In order to be able to power a huge variety of equipment, industrial wheel tractors were modified during the 1920s, by McCormick-Deering and Fordson. Like for instance, half-swing cranes and shovels were manufactured by several companies around the tractor's engine and power train 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, including various lifting machine devices.
For instance, side-mounted booms were primarily utilized for pipe-laying where it gained its nickname the "pipelayer." These machines are often utilized nowadays for attending to cleaning up railroad derailments. Because of their size, compact design and mobility, as well as outstanding lifting capacity, these machinery are ideal for this application. What's more, swing booms which 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 could not move fast thanks to their intense weights. Usually, 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 lattice boom or a telescopic arm that is easy to extend by using hydraulics. The lattice boom needs to be manually assembled by adding many sections.
Tower Cranes
Tower cranes are the ones found in large construction projects. These types of cranes are essential to be built and broken down on location. They should be transported by truck every time they are relocated. These tower cranes are very tall. They allow construction crews to transport heavy steel or concrete building components to the tops of tall buildings. Tower cranes utilize a hydraulic system to push each new crane part up into place and hence, are self-erecting.