Potain Tower Cranes Houston

Several industrial and commercial buildings are capable of reaching heights of more than 60 stories. Apparently, when these buildings are being built, they need equally tall cranes to be able to move the materials to the higher floors. There are cranes that have their own vehicle connected or other kinds that are operated from the back of trucks. Tower cranes are the largest ones on the market.



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



Types

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



Body

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



Lift

To raise supplies, the crane utilizes a braided metal cord. The cord extends all the way to the end of the jib or boom from a motor located near the control module. 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 located on the tower's opposite side. The counter jib has weights. These weights help to prevent the crane from tipping over when raising heavy materials.

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