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推土机动力传动系统的合理匹配仿真研究

, PP. 183-190

Keywords: 机械工程,动力传动系统,仿真,推土机,匹配,优化

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Abstract:

？为了给推土机传动系统设计提供参考,进一步提高推土机的动力性和燃油经济性,针对某大型液力机械传动的履带推土机,考虑了地面附着条件、换挡油压等因素的影响,在Simulink/SimDriveline环境下建立了推土机整机动力传动系统仿真模型;以表征推土机动力性和经济性的综合评价指标为目标函数,采用Simulink/SimDriveline模型与M文件联合编程的方法,对推土机传动系统的2个重要参数——变矩器有效直径和整机质量进行优化,得到了其最佳匹配组合,并将优化前后推土机驱动链轮输出功率和当量比油耗数值进行对比。结果表明:在推土机典型工况中的铲掘、运土和松土阶段,推土机驱动链轮输出功率有所提高,驱动链轮当量比油耗有不同程度的下降,推土机的动力性和经济性指标得到了改善。

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