Design improvement of tensioner bolt of driving system rubber tyred gantry crane

There was a failure in the tensioner bolts on the driving system of rubber tyred gantry crane system after two years of operation in the Tanjung Priok seaport of Indonesia. The aim of this research was to get the design solution by improving the design of the failure tensioner bolt component to fulfill optimum design and safety criteria. Site investigation collecting data conducted to get the loads data, speed of the rubber tyred, power of drive motor, etc, then design calculation for improvement, improved 2D geometry of the components, and assembly using the Autocad software. Processed 3D geometry and stress, displacement, and safety factor analysis using inventor simulation software. From simulation results showed that the improvement design met the optimum design and safety criteria.