Research on the Structural Improvement of Rotary Platform of Mine Roadheader Considering Fatigue Life
Using UG and Workbench software to construct a finite element model according to the solid dimensions of EBZ300 roadheader,the fatigue life is analysed,and it is found that the fatigue life of the four pin parts of the structure is relatively short.Response surface optimisation method is used in Workbench to optimise the design,in which the diameters and lengths of the four pins are taken as the optimisation objects,and the fatigue life of the structure is taken as the optimisation target.Through the optimisation,the maximum stress concentration of the structure is reduced,while the minimum fatigue life is greatly increased.The optimised slewing platform was deployed in the roadheader and operated for several months.It was observed that the new slewing platform is more stable in operation and its service life is expected to be extended by more than 30％.The structural improvement of the slewing platform can create good economic benefits for the enterprise.
roadheaderslewing platformfatigue lifestructural improvementfinite element method
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