摘要
液力-机械传动系统和液压-机械传动系统是地下铲运机两种重要的传动系统布置方案。针对ACY-10载运为1m^3的小型铲运机传动系统设计,根据铲运机使用要求,设计变量泵、变量马达等元件。采用静液压-机械传动方案,应用Automation Studio搭建整车不同液压系统的分析模型,对铲运机行驶液压系统、转向液压系统、工作液压系统等运行特性进行分析,获得不同工况时系统油路循环,系统所受动载荷特性,系统受动态外载荷作用时工作油缸压力、位置随时间变化曲线。同理根据液力-机械传动系统方案的特点,搭建分析模型,对比分析静液压-机械传动方案和液力-机械传动方案。结果可知:静液压-机械传动方案在最大牵引力、最大铲取力、爬坡能力等方面具有优势,且很好地解决了倾翻油缸系统中出现的波动现象,提高了液压系统的稳定性。可将静液压-机械传动方案作为设计参考。
Hydrodynamic-mechanical transmission system and hydrostatic-mechanical transmission system are two important trans- mission system layout schemes of underground load haul dump （LHD） unit. For the transmission system design of ACY-IO small un- derground LHD which load was 1 m3, according to the use requirements, the variable pump and motor components were designed. The hydrostatic-mechanical transmission scheme was chosen. Different vehicle hydraulic system analysis models were built based on Auto- mation studio, and the operating characteristics of driving hydraulic system, steering hydraulic system and working hydraulic system were analyzed. When tbe system was operated under different conditions, the system oil circulation, the dynamic load cbm＇acteristic of the system, and the pressure and the position curves of the working cylinder changing with time were gotten. Similarly, according to the characteristics of the hydrodynamic-mechanical transmission system, the analysis model was built. The characteristics of the hydrody- namic-mechanical transmission system and the hydrostatic-mechanical transmission system were comparative analyzed. The results show that the hydrostatic-mechanical transmission scheme has advantage in the maximum traction force, maximum digging force and climbing ability, and the tilting fluctuation phenomenon appeared in the cylinder system is solved well. So the stability of the hydraulic system is improved. The hydrostatic-mechanical transmission scheme can be taken as a design reference.
出处
《机床与液压》
北大核心
2017年第8期121-129,共9页
Machine Tool & Hydraulics
基金
湖北省教育厅科研项目(B20138802)
关键词
地下铲运机
静液传动
液力传动
对比分析
Underground load haul dump （LHD） unit
Hydrostatic transmission
Hydrodynamic transmission
Comparative analysis
