2014年11月17日星期一

How elevated tower crane

Tower Crane 
Crane referred tower crane, tower crane technical terms, also known as tower cranes. Is now essential for transportation and logistics as well as engineering and construction of a building machinery, so far, one hundred years of history. Because of tower cranes far looks like a tower, so it has become a way of increasing people interested in the topic.
In fact, the crane can be divided according to function: the balance arm, boom, foundation, tower, lifting, turning, lifting, lifting trolley, tower, cab, luffing and other parts of the building when the first tower crane should be a fundamental part of the installation. That is to determine the location of the tower crane erection, to determine the principles to be able to maximize the capacity of the tower crane construction machinery, easy entry and exit and tower crane installation and removal. Then select the appropriate foundation type. Weights and concrete foundation should be produced in advance and reach numerals not less than the foundation ground endurance 20T per square meter. On this basis, then they assembled on the chassis and the standard section.
Tower crane standard section is the main part constitutes the main part of the tower crane, tower crane height is heightening the main "character." During the construction process, along with the rise of the building crane, naturally, requires heightened. When heightening crane, with a lifting frame will be set up heightening frame, which stand between the tower and set aside space, standard section and then the tower is installed in this space inside. This will achieve the elevated tower crane purposes.

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