Gantry crane is a variant of Bridge crane. In the port, mainly for outdoor yard, yard goods, bulk cargo loading and unloading operations. Its metal structure shaped like a door frame, bearing girder installed under two feet directly in the ground walking on the tracks, you can have both ends of the main beam overhanging cantilever.
2015年11月29日星期日
grab bucket crane
electric wire rope hoist manufacturers almost all of the running over a limited range of rail crane elevator, the elevator is driven by electricity. For the flow of mobile crane at a distance (e.g., truck crane, cranes and crawler crane) metallurgical electric hoist more driven by internal combustion engine
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