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2014-08-26 by seoerccy
Crane, refers to extract the hook or other device hanging heavy in space lift and transport machinery and other cyclical job. high speed bearing Cranes have a lot of classification, "crane", "crane", "crane", "travel" and other commonly known refers to the crane in a class or classes. According to the structure can be divided into bridge cranes, cable cranes and jib cranes three categories, according to extract device can be divided hook crane, grab crane, and electromagnetic crane fifteen categories, according to the movement can be divided into fixed construction machinery bearing cranes, climbing cranes bearing, they move cranes, radial slewing cranes, cranes walking five categories, according to the driving mode can be divided into manual cranes, electric cranes, hydraulic cranes categories. There are in accordance with the rotation capability,

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