某宽体矿用车变速箱下横梁的优化设计分析

针对某宽体矿用车车架变速箱下横梁断裂问题，利用有限元分析的方法，对原方案进行强度验算后开展两轮优化设计，在保证结构强度的前提下，通过改变结构达到减小应力的设计目的，为避免开裂提供有效的设计手段。优化结果表明，优化方案对比原方案明显降低了变速箱下横梁的应力，增强了变速箱下横梁的强度。

Optimization Analysis for Gearbox Lower-crossmember of Widen-body Mining Truck

Aiming at the fracture problem of the lower beam of the gearbox of a wide-body mining truck frame,the finite element analysis method is used to carry out the two-wheel optimization design after the strength check of the original scheme.Under the premise of ensuring the structural strength,the stress is reduced by changing the structure.Designed to provide an effective means of design to avoid cracking.The optimization results show that the optimization scheme significantly reduces the stress of the lower beam of the gearbox compared with the original scheme,and enhances the strength of the lower beam of the gearbox.