跨座式单轨工程车液压驱动系统的优化设计  

Optimization Design of Hydraulic Drive System for Straddle Type Monorail Engineering Vehicle

作　　者：周威 贺伟 李伟奇 郭庆林 ZHOU Wei;HE Wei;LI Wei-qi;QUO Qing-lin(Hangzhou Zhongche Vehicle Co.,Ltd,Hangzhou 311500,China)

机构地区：[1]杭州中车车辆有限公司,浙江杭州311500

出　　处：《浙江交通职业技术学院学报》2024年第4期36-40,共5页Journal of Zhejiang Institute of Communications

摘　　要：针对出口墨西哥的跨座式单轨工程车存在下坡飞速、双编组车辆压力差异大等问题,对液压驱动系统进行优化设计。基于AMEsim软件建立的液压驱动系统仿真模型,对液压系统性能进行评估并明确优化方案。通过在散热回路中增加电比例溢流阀,开式变量泵充当缓冲泵,解决了下陡坡工况时的发动机与泵超出极限转速问题。另外,针对双机重联时出现前后车的压力差异大现象,提出压力补偿与车辆标定后的控制电流修正策略。最后,经过车辆的行驶试验,证明防失速控制策略与双车重联的牵引力同步性优化方案具有可行性。Optimization design of hydraulic drive system was carried out to address the problems of rapid downhill speed and large pressure difference between double formation vehicles in the cross seat monorail engineering vehicle exported to Mexico.A hydraulic drive system simulation model based on AMEsim software was established to evaluate the performance of the hydraulic system and clarified the optimization plan.By adding an electric proportional relief valve in the heat dissipation circuit and using an open variable pump as a buffer pump,the problem of engine and pump exceeding the limit speed during downhill conditions has been solved.In addition,in response to the phenomenon of large pressure differences between the front and rear vehicles during dual machine reconnection,a pressure compensation and control current correction strategy after vehicle calibration were proposed.Finally,After vehicle driving tests,it has been proven that the anti stall control strategy and the optimization scheme for traction synchronization of dual vehicle coupling are feasible.

关 键 词：跨座式单轨工程车 液压驱动 反拖失速 双机重联 

分 类 号：U270[机械工程—车辆工程]