装载机液力变速器系统工作热特性
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摘要
为了解决装载机对液力变速器系统热特性的要求,在简化热平衡计算方法的基础上,根据能量守恒定律建立了液力变速器系统的热平衡模型和产热量优化模型,同时运用Matlab编写了计算程序。针对某ZL50装载机的高速跑工况和I型铲装工况,进行了液力变速器系统热特性的求解计算,并将仿真结果与试验数据进行了对比。结果表明:液力变速器热平衡模型具有较好的仿真精度,基本可以预测传动油的温升曲线,能够为液力变速器系统的设计和优化提供一定的技术参考。
In order to solve the thermal characteristic requirements in hydraulic transmission system of loader,the heating mechanism and heat transfer process were analyzed.The heat balance model of the hydraulic transmission system was established based on the simplified heat balance calculation method,and heat production optimization model was built to reduce energy loss.For efficient calculation,simulation program was developed on Matlab.The power loss,quantity of heat and the temperature in the hydraulic transmission system of a ZL50 wheel loader were simulated under typical working condition,and the simulation results were compared with the test results.It is shown that the equilibrium temperatures of the transmission oil are within the normal working oil temperature scope under two kinds of operation mode.The heat balance model of the hydraulic transmission has good imitating accuracy and can predict the oil temperature rise curve.This research can provide a reference for the design and optimization of a hydraulic transmission system.
In order to solve the thermal characteristic requirements in hydraulic transmission system of loader,the heating mechanism and heat transfer process were analyzed.The heat balance model of the hydraulic transmission system was established based on the simplified heat balance calculation method,and heat production optimization model was built to reduce energy loss.For efficient calculation,simulation program was developed on Matlab.The power loss,quantity of heat and the temperature in the hydraulic transmission system of a ZL50 wheel loader were simulated under typical working condition,and the simulation results were compared with the test results.It is shown that the equilibrium temperatures of the transmission oil are within the normal working oil temperature scope under two kinds of operation mode.The heat balance model of the hydraulic transmission has good imitating accuracy and can predict the oil temperature rise curve.This research can provide a reference for the design and optimization of a hydraulic transmission system.
引文
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[9]吴新,连晋毅.基于MATLAB的液力变矩器的热仿真分析[J].机械传动,2013,39(1):94-97.Wu Xin,Lian Jin-yi.The thermal simulation analysis of the hydraulic torque converter based on the MTALAB[J].Journal of Mechanical Transmission,2013,39(1):94-97.
[10]邱宣怀.机械设计[M].4版.北京:高等教育出版社,1997.
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[12]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,1998.
[13]王开宝,秦四成,王雪莲,等.ZL80型轮式装载机变速器工作热特性分析[J].工程机械,2008,39(3):32-36.Wang Kai-bao,Qin Si-cheng,Wang Xue-lian,et al.Thermal characteristic analysis for transmission on model ZL80wheel loader[J].Construction Machinery and Equipment,2008,39(3):32-36.
[2]Murin J.Some properties of a diesel drive line with hydrodynamic torque converters of the latest generation[J].Mechanism and Machine Theory,2005,40(1):99-117.
[3]万国强,黄英,张付军,等.液力自动变速器换挡过程标定方法研究[J].兵工学报,2012,33(2):142-148.Wan Guo-qiang,Huang Ying,Zhang Fu-jun,et al.Research on the calibration method for gear shifting of automatic transmission[J].Acta Armamentarii,2012,33(2):142-148.
[4]吴强,姚俊,付亮,等.装载机液力变速器及其操控技术发展[J].机械传动,2010,35(4):69-73.Wu Qiang,Yao Jun,Fu Liang,et al.Hydraulic transmission and development of manipulation control technology for loader[J].Journal of Mechanical Transmission,2010,35(4):69-73.
[5]闫清东,于涛,朱丽君,等.工程车辆液力机械传动效率控制[J].吉林大学学报:工学版,2013,43(3):602-606.Yan Qing-dong,Yu Tao,Zhu Li-jun,et al.Efficiency control of hydrodynamic-mechanical transmission of engineering machinery[J].Journal of Jilin University(Engineering and Technology Edition),2013,43(3):602-606.
[6]刘明增.装载机液力变速器主要性能及综合性能评价研究[D].济南:山东大学机械工程学院,2014.Liu Ming-zeng.Research on main performance and comprehensive performance evaluation of loader hydraulic transmission box[D].Ji′nan:School of Mechanical Engineering,Shandong University,2014.
[7]吴光强,孙贤安.汽车自动变速器发展综述[J].同济大学学报:自然科学版,2010,38(10):1478-1483.Wu Guang-qiang,Sun Xian-an.Development survey of automobile automated transmission[J].Journal of Tongji University(Natural Science),2010,38(10):1478-1483.
[8]陈凯,吴光强.基于遗传算法的液力变矩器与发动机匹配的多目标优化[J].汽车工程,2014,36(5):532-536.Chen Kai,Wu Guang-qiang.Genetic algorithmbased multi-objective optimization for the matching of torque converter with engine[J].Automotive Engineering,2014,36(5):532-536.
[9]吴新,连晋毅.基于MATLAB的液力变矩器的热仿真分析[J].机械传动,2013,39(1):94-97.Wu Xin,Lian Jin-yi.The thermal simulation analysis of the hydraulic torque converter based on the MTALAB[J].Journal of Mechanical Transmission,2013,39(1):94-97.
[10]邱宣怀.机械设计[M].4版.北京:高等教育出版社,1997.
[11]许翔,毕小平.车用液力传动装置的传热研究[J].机械传动,2004,28(4):9-12.Xu Xiang,Bi Xiao-ping.The research for heat transfer of hydraulic transmission device[J].Journal of Mechanical Transmission,2004,28(4):9-12.
[12]杨世铭,陶文铨.传热学[M].4版.北京:高等教育出版社,1998.
[13]王开宝,秦四成,王雪莲,等.ZL80型轮式装载机变速器工作热特性分析[J].工程机械,2008,39(3):32-36.Wang Kai-bao,Qin Si-cheng,Wang Xue-lian,et al.Thermal characteristic analysis for transmission on model ZL80wheel loader[J].Construction Machinery and Equipment,2008,39(3):32-36.