Potain Tower Cranes Arlington

Some commercial and industrial buildings can reach heights of over 60 stories. Obviously, while these buildings are being constructed, they require equally tall cranes to be able to transport the supplies to the upper floors. There are cranes that are operated from the back of trucks or other types which have their own vehicle connected. Tower cranes are the biggest types on the market.



Tower cranes are the stand-alone structures which are often seen on high-rise building projects. Normally, they are part of a major city's downtown skyline. When new construction like skyscrapers or apartment buildings and commercial facilities such as shopping center are being constructed, odds are a crane would be on site.



Types

There are two different types of cranes: jib crane of the boom crane. The jib is a metal frame which extends from the main section. On a flat tower crane, the jib remains horizontal when it carries items. On a luffing type of tower crane, the jib can ratchet to downward or upward angles. The lifting capacity for both kinds can range from 30,000 lbs. to 10,000 pounds



Body

The crane's body is composed of a mast. This is a vertical steel frame which is a combination of individual parts. In order to increase the overall height of the machinery, parts are added. The mast extends upward to where the desired height is, to the control module, which is a small room that has glass windows on all four sides or to the tower as it is also referred to. The crane driver works from inside of the tower.



Lift

The crane utilizes a braided metal cord to lift supplies. This cord extends out from a motor situated next to the control module to the end of the jib or boom. There is a pulley system located at the end of the jib, through which the cord is positioned and lowered down. The jib which holds the cord becomes balanced by a counter jib situated on the opposite side of the tower. The counter jib has weights. These weights help to prevent the crane from toppling over when lifting heavy materials.

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