Objective:To study the stress of the hub reduction gearbox of cotton packing all-in-one machine under the actual working conditions,the structural optimization design was carried out for the stress concentration area of the gearbox to eliminate the possibility of resonance between the gearbox and the interior and improve the strength and durability of the gearbox.Methods:Taking the TJN35R reducer on the market as the prototype,the three-dimensional model was established and the finite element analysis was carried out.Aiming at the structural optimization of the stress concentration part,the static structural analysis and modal analysis were carried out for the optimized model to verify the optimization results and eliminate the resonance between the box and the interior.Results:According to the static structural analysis,the maximum equivalent force occured at the upper end of the box cover where the box was connected to the crossbeam.Optimizing the model by increasing the rounded corner of the transition position there reduced the maximum equivalent force by 24％,and the results of the modal analysis of the optimized model showed that the optimized box did not resonate with the internal part of the reducer.Conclusion:Cotton picking baler reducer case there was a stress concentration situation,the stress concentration to increase the transition fillet processing,could effectively reduce the maximum equivalent force,optimized case and the internal resonance would not occur.
关键词
采棉打包一体机/轮边减速机/结构优化/模态分析
Key words
Cotton picking and baling machine/Wheelside reducer/Structural optimization/Modal anal-ysis
维普
万方数据