Abstract
This paper introduces a new type of energy saving device for tyre type container gantry crane (RTG for short), the main principle of reducing the energy consumption of the lifting process is for equipping the counterweight device and the wire rope winding device on cranes' steel structure. The main components of the energy saving device are introduced in detail in this paper, and the stress analysis and theoretical mechanics calculation are carried out. The calculation results imply no significant stress influence on the steel structure of the equipment for the reasonable design of the steel wire rope winding device and the rationally distribution. The crane's energy consumption decreased by 15% at the chosen port test after the installation of energy-saving devices, which has significant social and economic value.
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