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A brief introduction to Self Erecting Crane advantage
Self-erecting crane (called also a self-assembling crane) is a kind of material handling machine which belongs to tower cranes. Its major advantage is that the crane can be quickly transported and assembled without any outside help. The main parts of a self-erecting crane are: a platform, a tower, a horizontal or a luffing jib, and a counterweight combined with ballast which is located at the bottom of the tower. The slewing ring is situated on the platform. This heavy equipment is remotely controlled from the ground. It's powered with an electric motor, sometimes carries its own power generator. Therefore a self-erected crane is a fully independent and environment-friendly machine with a quiet and emission free engine.
Building a Self Erecting Crane
The transport of a self-erecting crane is as easy as the installation. The crane, usually folded in 3-4 sections, is towed on its own axles or on a flat bed (the ballast can be permanently attached or transported separately). Then it's hydraulically erected on the working site what usually lasts about half an hour. The calibration and testing takes about two hours. A telescopic tower enables the crane to adjust its height to the building's height. The crane can be unfolded as quick as assembled. It is a very useful construction machinery.
Self-erecting cranes are mainly used for the construction of low-rise buildings like private houses or small residential buildings. They're an ideal solution especially in conditions of limited space. The reach (jib length) of a self-erecting crane ranges from 80 to 160 feet (25 to 50 m), the hook height – from 55 to 120 feet (17 to 35 m), the maximum load – from 2,000 to 11,000 pounds (0.9 to 5 t).
The main manufacturers of self-erecting tower cranes and other heavy machinery are: Alfa, Benazzato, Benedini, Cadillon, Cattaneo, Cibin, Cinomatic, Comansa, Comedil, Edilgru, FB, FM-Gru, Liebherr, Manitowoc, Potain, Saez, San Marco.