Other KInds of Crawler-Mounted Cranes
In order to be able to power a huge variety of machinery, industrial wheel tractors were adapted in the 1920s, by McCormick-Deering and Fordson. Like for instance, half-swing cranes and shovels were made by some companies around the tractor's power train and engine and the wheels became replaced by crawlers.
Crawler tractors came into widespread use in the 1930s. Immediately after, many manufacturers began manufacturing attachments for them, including various lifting machine devices.
Side-mounted booms for example, were utilized primarily for pipe-laying at first and the equipment got the nickname "pipelayer." These equipments are currently usually used for attending to cleaning up railroad derailments. Due to their mobility, size and compact design, as well as excellent lifting capacity, these types of machines are great for this use. Additionally, swing booms that mounted on top of the engine compartment became available too.
Crawler cranes are like the crawler tractor in that it travels along crawler tracks. These machinery could not move fast due to their intense weights. Normally, 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 telescopic arm or a lattice boom that is easy to extend by utilizing hydraulics. The lattice boom must be assembled by hand by adding many sections.
Tower Cranes
Tower cranes are the ones found in large construction projects. These kinds of cranes are necessary to be built and broken down on location. They must be transported by truck each and every time they are relocated. These tower cranes are exceptionally tall. They allow construction crews to transport heavy steel or concrete building parts to the tops of tall buildings. Tower cranes utilize a hydraulic system to push each and every new crane section up into position and hence, are self-erecting.