Finite Element Analysis and Structural Optimisation of Roll Teeth of Spiral Screening Crusher for Coal Mine Use
The finite element model of the roll teeth of MMD1150 spiral screening crusher was established by using Pro/E and Ansys software,and it was found that the stress and displacement deformation of the tooth tip position were the largest,which were 200.65 MPa and 0.384 17 mm,respectively,which led to the tooth tip to be prone to failure problems under the severe coal mine working conditions.Taking the three key structural parameters of the tooth tip as the optimisation object,the optimisation design of the roller tooth structure using Ansys software makes the maximum stress and displacement deformation of the tooth tip area under the same working conditions reduced by about 30％and 60％respectively.The optimised roller teeth were applied to the project for 3 months,and it was found that the operation was good and the service life could be improved by 15％.
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