阀控充液式液力偶合器连续充液瞬态匹配特性研究  

Continuous filling transient matching characteristics of valve-controlled fluid-filled hydraulic coupling

作　　者：高军俊 李莉 崔红伟 GAO Junjun;LI Li;CUI Hongwei(College of Mechanical and Electrical Engineering,Shanghai Donghai Vocational and Technical College,Shanghai 200241,China;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]上海东海职业技术学院机电学院,上海200241 [2]太原理工大学机械与运载工程学院,太原030024

出　　处：《重庆理工大学学报（自然科学）》2023年第12期335-343,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：山西省重点研发计划项目(03012015002)。

摘　　要：为了预测液力偶合器与三相异步电机共同工作时的软启动性能,采用仿真软件ANSYS-CFX模拟得到了液力偶合器的泵轮转矩特性,将电机与液力偶合器的输入特性联合分析,结合匹配原则,利用Matlab软件确定了两者在不同充液率及不同转速比下的共同工作点,并计算获得了液力偶合器与电机在全充液及部分充液工况下的共同工作输出特性。结果表明,在不同充液率条件下,液力偶合器与电机共同工作时,输出转矩整体上随着输出转速的增大而减小,随着充液率的增大而增大,输出转速较低时,90%、100%充液率下的转矩值保持稳定不变,与电机直接启动相比,共同工作时的输出转矩变化更为平稳。分析结果可为刮板输送机软启动控制策略的研究与制定提供参考。As an ideally controlled starting device for heavy scraper conveyer,valve-controlled fluid-filled hydraulic coupling boasts such advantages as improving starting performance and stepless speed regulation.To predict the soft start-up performance of hydraulic coupling working with three-phase asynchronous motor,the pump wheel torque characteristics of the coupling are obtained based on the simulation software ANSYS-CFX.The input characteristics of the motor and hydraulic coupling are jointly analyzed.On the basis of the matching principle,the common working points of the two under different liquid filling rates and different speed ratios are determined by using matlab software.The output characteristics of the joint operation of the hydraulic coupling and the motor under full and partial filling conditions are obtained.The results show that under different filling rates,the output torque of the hydraulic coupling and the motor working together decreases with the increase of the output speed on the whole,and goes up with the rise of the filling rate.When the output speed is low,the torque values at 90%and 100%filling rates remain stable.Comparing the output torques when motors work together or start directly,the changes of the former experiences are more smooth.The research may provide references for the study of soft start control strategy of scraper conveyor.

关 键 词：阀控充液式液力偶合器 软启动 部分充液 瞬态匹配 

分 类 号：TH137.331[机械工程—机械制造及自动化]