Finite Element Analysis and Structural Optimization of Mine Man-Car Skip Underframe
Mine man-car skip underframe is one of key components of mine hoisting system, in order to obtain the optimal structure and function characteristics, the finite element analysis method based on ANSYS is used to make static and modal analysis for the mine slope ramp man-car skip underframe. Static analysis shows that: The strength of underframe under typical working conditions meets requirements, but the stress surplus is relatively large. Modal analysis indicates that: It's prone to have bend and torsional deflection between the 4th and 5th beam, and the free modal shape has saltation. According to the above finite element analysis results, corresponding structure optimization is made on the underframe section size and the position of beams. The optimizing results show that: The stress amplitude of structural optimized underframe increases by 16.9%, the stress surplus effectively reduces, and the weight of underframe decreases by 10.6%. The free modal shape is more smooth, vibration mode has no saltation, and the dynamic performance is improved.