Grab type Ship Unloader has the utility of unloading enormous bulk cargos in docks and has the main features of big unloading capacity and of being able to unload various cargos, which has good adjustability to different size of ships.

Grab ship unloader comprises of steel structures, hoisting and closing mechanism, trolley travelling mechanism, luffing mechanism, travelling mechanism, machinery house, lift, grab, dust preventing system, electrical equipment, and necessary safety and aid devices. Reducer and four linked drums can be applied to the trolley travelling mechanism as well as hoisitng and closing mechanism which are also accessible to PLC frequency changeable, digital speed altering system and CMMS. Therefore the two above systems have the function of analysis, monitor and efficient power supply of communication and illumination. Also, the grab can be equipped with electronic anti-swaying system.

Steel structure has a diversity of different types such as single and double box girder,truss boom, arm boom and H gantry frame.

Standards during design and manufacturing processes:
Specification of Quayside crane,
Safety rules for lifting appliances,
Design rules for cranes,
ISO Standards and FEM.