Four-link type portal crane has various applications, such as loading and unloading at port, shipbuilding and repairing yard, steel works. The main structures are steel frame, lifting mechanism, luffing mechanism, slewing mechanism, traveling mechanism, spreader device (grab, container spreader, and hook), electrical equipment and auxiliary devices and safety devices. Rigid rack and screw lever luffing mechanism make sure a constant work state.
Standards applicable£º Harbor portal crane technical specifications£¨GB17495£1998£©£¬lift equipments safety specification£¨GB6067£85£©crane design standards£¨GB3811£83£©and ISO standards£¬ FEM standards. |
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