摘要
针对内曲线式端面配流水液压马达工作存在的流量泄漏问题,改进定子轮廓曲线方程并建立马达关键摩擦副的泄漏模型,以总功率损失最小为目标函数,对摩擦面间隙进行优化设计.搭建水液压马达测试平台进行不同负载下的马达排量测试.试验结果表明:不同负载条件下流量模型均能较好反映马达输出流量随转速上升的变化情况,试验的真实误差率低于5%.水液压马达的流量特性得到明显改善,空载下的水液压马达容积效率最高可提升至94.71%.研究表明:柱塞与转子缸孔的间隙值是影响水液压马达泄漏流量的最主要参数,其次是配流体与转子体的端面间隙值.
A high-order curve was proposed for the stator profile in order to address the flow leakagelimitation of the internal curve type water hydraulic motor. Then flow leakage models for piston pair anddistribution pair were established, respectively. The friction pair parameters were optimized usingminimum total power loss as objective function based on the leakage models. The displacementperformance of motor was experimentally investigated under different load conditions. The test resultsagreed well with the calculated values under various load conditions. The error rate of test was restrictedwithin 5%. The flow characteristic was improved effectively and the volumetric efficiency reached amaximum of 94.71% at no-load state. Research indicates that the piston-liner clearance is the most criticalfactor determining the leakage flow, followed by the end clearance of port plate and rotor.
作者
倪敬
冯国栋
王志强
高殿荣
许明
NI Jing FENG Guo-dong WANG Zhi-qiang GAO Dian-ronga XU Ming(School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China State Key Laboratory of Fluid Power and Mechatronic Systems, Zhej iang University, Hangzhou 310058, China School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2017年第5期946-953,共8页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(51505111)
浙江省自然科学基金资助项目(LQ16E050003)
国家重点实验室开放基金资助项目(GZKF-201519)
关键词
水液压马达
定子曲线
流量模型
摩擦副
间隙优化
water hydraulic motor
stator curve
flow model
friction pair
clearance optimization
