液压机械无级变速器实验台的设计与试验
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摘要
为缩短设计周期,提高变速箱换段品质,根据非道路车辆动力换挡变速箱实验要求,设计开发大型非道路车辆动力换挡变速箱试验台。基于模块化设计方法,设计以动力装置、HMCVT、加载装置、泵控马达系统、支撑机构组成的机械系统。基于传动系统,分析作业工况下的工作速度要求,结合车辆行驶阻力公式,确定液压系统设计要求。根据试验台测控要求,开发了以工控机、数据采集卡、转矩转速传感器和控制器、执行器组成的测控系统。试验结果表明:本课题设计的液压机械无级变速器传动方案连续可行;离合器在不同阶段呈现不同充油特性,换挡离合器的油压升高可缩短换段时间。
In order to short the designing period and improving the quality of shifting. According to the requirement of nonroad's experiment,Design a large non-road vehicle power shift transmission test bed. Designing on the modular method,the test bed consisted by the power device,HMCVT,loading device,the system of pump control motor,a mechanical system consisting of a supporting mechanism. Based on transmission system,analysis requirement of working speed conditions,and combining the formula of vehicle driving resistance to determine the design requirement of the hydraulic system. According to the test and control requirements of the test bed,developed a measurement and control system which consisted by IPC,data acquisition card,torque speed sensor controller and actuator. The test results showed that: the plan that designed by the subject can run steady and continuously,the clutch reflect different oil filling characteristics in different stages,and increasing oil pressure of clutch can increase the needed time of shifting.
In order to short the designing period and improving the quality of shifting. According to the requirement of nonroad's experiment,Design a large non-road vehicle power shift transmission test bed. Designing on the modular method,the test bed consisted by the power device,HMCVT,loading device,the system of pump control motor,a mechanical system consisting of a supporting mechanism. Based on transmission system,analysis requirement of working speed conditions,and combining the formula of vehicle driving resistance to determine the design requirement of the hydraulic system. According to the test and control requirements of the test bed,developed a measurement and control system which consisted by IPC,data acquisition card,torque speed sensor controller and actuator. The test results showed that: the plan that designed by the subject can run steady and continuously,the clutch reflect different oil filling characteristics in different stages,and increasing oil pressure of clutch can increase the needed time of shifting.
引文
[1]张明柱,周志立,徐立友.农业拖拉机用多段液压机械无级变速器设计[J].农业工程学报,2003,19(6):118-121.(Zhang Ming-zhu,Zhou Zhi-li,Xu Li-you.The design of agricultural tractor with multi-stage hydraulic mechanical gearbox[J].Transactions of the Chinese Society of Agricultural Engineering,2003,19(6):118-121.)
[2]张明柱.拖拉机多段液压机械无级变速器控制策略研究[D].西安:西安理工大学,2007.(Zhang Ming-zhu.Research on control strategy of multi-section hydraulic mechanical transmission control of tractor[D].Xi’an:Xi’an University of Technology,2007.)
[3]胡纪滨.高效液压机械连续无级传动理论分析和试验研究[D].北京:北京理工大学,1995.(Hu Ji-bin.An Efficient Hydraulic Mechanical Continuous Theory Analysis and Experimental Study[D].Beijing:Beijing Institute of Technology,1995.)
[4]胡纪滨,赵然,丛振刚.液压机械无级传动的自动控制研究[J].北京理工大学学报,2002(4):433-436.(Hu Ji-bin,Zhao Ran,Cong Zhen-gang.The automatic control study of hydraulic mechanical transmissions[J].Journal of Beijing Institute of Technology,2002(4):433-436.)
[5]倪向东,朱思洪,欧阳大业.拖拉机液压机械无级变速器速比匹配设计与实验[J].农业机械学报,2013,44(4):15-21.(Ni Xiang-dong,Zhu Si-hong,OuYang da-ye.The speed ratio matching design and experiment of the hydraulic mechanical transmission ratio of tractor[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(4):15-21.)
[6]倪向东,朱思洪,张海军.液压机械无级变速器换段品质影响因素试验[J].农业机械学报,2013,44(6):29-34.(Ni Xiang-dong,Zhu Si-hong,Zhang Hai-jun.Test of Influence Factor of the Quality of Hydraulic Mechanical Gearbox[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(6):29-34.)
[7]徐立友,李金辉,张彦勇.液压机械无级变速传动在拖拉机上的应用分析[J].农机化研究,2009(11):215-219.(Xu Li-you,Li Jin-hui,Zhang Yan-yong.The application of hydraulic mechanical stepless transmission on tractor[J].Journal of Agricultural Mechanization Research,2009(11):215-219.)
[8]徐立友.拖拉机液压机械无级变速器特性研究[D].西安:西安理工大学,2007.(Xu Li-you.Research on the Characteristics of the Tractor Hydraulic Machinery Stepless Transmission[D].Xi’an:Xi’an University of Technology,2007.)
[9]韩兆林,胡纪滨,荆崇波.液压机械传动系统双流工况动态特性研究[J].北京理工大学学报,2004,24(2):104-108.(Han Zhao-lin,Hu Ji-bin,Jing Chong-bo.Study on the dynamic characteristics of dual-flow condition of hydraulic mechanical transmission system[J].Journal of Beijing Institute of Technology,2004,24(2):104-108.)
[2]张明柱.拖拉机多段液压机械无级变速器控制策略研究[D].西安:西安理工大学,2007.(Zhang Ming-zhu.Research on control strategy of multi-section hydraulic mechanical transmission control of tractor[D].Xi’an:Xi’an University of Technology,2007.)
[3]胡纪滨.高效液压机械连续无级传动理论分析和试验研究[D].北京:北京理工大学,1995.(Hu Ji-bin.An Efficient Hydraulic Mechanical Continuous Theory Analysis and Experimental Study[D].Beijing:Beijing Institute of Technology,1995.)
[4]胡纪滨,赵然,丛振刚.液压机械无级传动的自动控制研究[J].北京理工大学学报,2002(4):433-436.(Hu Ji-bin,Zhao Ran,Cong Zhen-gang.The automatic control study of hydraulic mechanical transmissions[J].Journal of Beijing Institute of Technology,2002(4):433-436.)
[5]倪向东,朱思洪,欧阳大业.拖拉机液压机械无级变速器速比匹配设计与实验[J].农业机械学报,2013,44(4):15-21.(Ni Xiang-dong,Zhu Si-hong,OuYang da-ye.The speed ratio matching design and experiment of the hydraulic mechanical transmission ratio of tractor[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(4):15-21.)
[6]倪向东,朱思洪,张海军.液压机械无级变速器换段品质影响因素试验[J].农业机械学报,2013,44(6):29-34.(Ni Xiang-dong,Zhu Si-hong,Zhang Hai-jun.Test of Influence Factor of the Quality of Hydraulic Mechanical Gearbox[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(6):29-34.)
[7]徐立友,李金辉,张彦勇.液压机械无级变速传动在拖拉机上的应用分析[J].农机化研究,2009(11):215-219.(Xu Li-you,Li Jin-hui,Zhang Yan-yong.The application of hydraulic mechanical stepless transmission on tractor[J].Journal of Agricultural Mechanization Research,2009(11):215-219.)
[8]徐立友.拖拉机液压机械无级变速器特性研究[D].西安:西安理工大学,2007.(Xu Li-you.Research on the Characteristics of the Tractor Hydraulic Machinery Stepless Transmission[D].Xi’an:Xi’an University of Technology,2007.)
[9]韩兆林,胡纪滨,荆崇波.液压机械传动系统双流工况动态特性研究[J].北京理工大学学报,2004,24(2):104-108.(Han Zhao-lin,Hu Ji-bin,Jing Chong-bo.Study on the dynamic characteristics of dual-flow condition of hydraulic mechanical transmission system[J].Journal of Beijing Institute of Technology,2004,24(2):104-108.)