Different KInds of Crawler-Mounted Cranes
Industrial wheel tractors during the 1920s, such as those made by McCormick-Deering and Fordson were quickly adapted in order to be able to power a large variety of machines. For instance, half-swing cranes and shovels were made by several companies around the tractor's engine and power train and the wheels became replaced by crawlers.
Crawler tractors came into widespread use during the 1930s. Soon after, numerous manufacturers started making attachments for them, including a variety of lifting machine devices.
Side-mounted booms for instance, were used primarily for pipe-laying at first and the equipment got the nickname "pipelayer." These equipments are often utilized today for attending to cleaning up railroad derailments. Due to their mobility, size and compact design, along with excellent lifting capacity, these types of machinery are great for this use. Moreover, swing booms that mounted on top of the engine compartment became available also.
Similar to a crawler tractor, crawler cranes travel on crawler tracks. Due to their intense weight, these equipments do not move really fast. Normally, the crane may 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 utilizing hydraulics. The lattice boom should be manually assembled by adding multiple sections.
Tower Cranes
Normally found in big construction projects, tower cranes are required to be erected and broken down on location. They need to be transported by truck every time they are relocated. These tower cranes are very tall. They enable construction crews to transport heavy steel or concrete building components to the tops of tall buildings. Tower cranes use a hydraulic system to push each and every new crane part up into position and hence, are self-erecting.