Different Types of Crawler-Mounted Cranes
In order to be able to power a large variety of machinery, industrial wheel tractors were adapted in the 1920s, by Fordson and McCormick-Deering. For instance, 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.
Throughout the 1930s, crawler tractors came into widespread use. Immediately after, numerous manufacturers began making attachments for them, like a variety of 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 used for attending to cleaning up railroad derailments. Due to their compact design, mobility and size, in addition to exceptional lifting capacity, these equipments are ideal for this use. What's more, 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 machinery could not move fast thanks to their intense weights. Usually, the crane could be controlled by 2 or more cable operated drums and is powered by one engine. The crawler cranes come equipped with a lattice boom or a telescopic arm which can be extended easily utilizing hydraulics. The lattice boom should be manually assembled by adding multiple 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 have to be transported by truck each and every time they are relocated. These tower cranes are exceptionally tall. They allow construction crews to move 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 place and therefore, are self-erecting.