Pecco Tower Cranes San Francisco

Other Types of Crawler-Mounted Cranes

In order to be able to power a huge range of machinery, industrial wheel tractors were adapted in the 1920s, by McCormick-Deering and Fordson. For example, half-swing cranes and shovels were manufactured by some companies around the engine and power train of the tractor and the wheels became replaced by crawlers.



Crawler tractors came into widespread use in the 1930s. Immediately after, many manufacturers began making attachments for them, like for example various lifting machine devices.



For example, side-mounted booms were mainly used for pipe-laying where it gained its nickname the "pipelayer." These equipments are often used now for attending to cleaning up railroad derailments. Because of their mobility, size and compact design, in addition to excellent lifting capacity, these types of machinery are ideal for this use. Additionally, swing booms which mounted on top of the engine compartment became available also.



Crawler cranes are like the crawler tractor in that it travels along crawler tracks. These machines can not move fast due to their intense weights. Typically, the crane can 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 that can be extended easily using hydraulics. The lattice boom should be manually assembled by adding many sections.



Tower Cranes

Tower cranes are the ones found in large construction projects. These types of cranes are necessary to be erected and broken down on location. They need to be transported by truck each and 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 every new crane section up into place and therefore, are self-erecting.

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