混凝土搅拌车搅拌转筒的振动性能
|
摘要
以混凝土搅拌车为研究对象,对搅拌车搅拌转筒进行了受力分析,得到了各支撑力的计算模型。归纳了搅拌转筒内混凝土液面形状的计算方法,分析了搅拌转筒转速、倾斜角度以及混凝土液位对筒内液面形状的影响。构建了考虑混凝土液面分布形状的新型传递矩阵模型,针对算例进行了分析,研究了搅拌转筒转速、倾斜角度、混凝土液位对搅拌转筒振动性能的影响。发现搅拌转筒的振型呈现非对称分布,随着转速的增大,搅拌转筒的振动幅度不断减小;随着倾斜角度的增大,搅拌转筒的最大振幅几乎不发生改变,但其振动峰值的位置逐渐向右移动;搅拌转筒的不平衡响应振幅随着混凝土液位高度的下降而增大,振动峰值逐渐向左移动。
The rotating drum of a certain type of concrete mixing truck is studied.A mathematical formulation was derived through the force analysis to calculate the supporting forces.The calculation method of the concrete distribution shape in the rotating drum is developed.A new transfer matrix is built with considering the concrete geometric distribution shape.The effects of rotating speed,inclination angle and concrete liquid level on the vibration performance of the rotating drum are studied with a specific example.Results show that with the increase of rotating speed,the vibration amplitude of the rotating drum decreases.The maximum vibration amplitude is almost not changed and the peak amplitude gradually moves to the right with the inclination angle increasing.The maximum unbalanced response amplitude of the drum increases with the decrease of concrete liquid level height,and the vibration peak moves to the left.
The rotating drum of a certain type of concrete mixing truck is studied.A mathematical formulation was derived through the force analysis to calculate the supporting forces.The calculation method of the concrete distribution shape in the rotating drum is developed.A new transfer matrix is built with considering the concrete geometric distribution shape.The effects of rotating speed,inclination angle and concrete liquid level on the vibration performance of the rotating drum are studied with a specific example.Results show that with the increase of rotating speed,the vibration amplitude of the rotating drum decreases.The maximum vibration amplitude is almost not changed and the peak amplitude gradually moves to the right with the inclination angle increasing.The maximum unbalanced response amplitude of the drum increases with the decrease of concrete liquid level height,and the vibration peak moves to the left.
引文
[1]李荣满,张跃春,李焱,等.混凝土搅拌车专用减速机的静强度试验研究[J].机械传动,2013,37(5):27-31.
[2]GAO Yaodong,MA Youzheng,KONG Xianggang.Analysis and optimization on the front supporter of concrete mixer truck[J].Applied Mechanics and Materials,2013,385/386:288-291.
[3]高耀东.混凝土搅拌运输车前支承强度分析及结构优化[D].内蒙古:内蒙古科技大学,2014.
[4]闫伟.混凝土搅拌车行驶非稳定工况状态仿真研究[D].重庆:重庆交通大学,2013.
[5]SUN Haixia,WEI Huakai,ZHAO Xiaofang,et al.Finite element analysis of structural strength of concrete mixing truck’s frame[J].Advanced Materials Research,2014:945/949:1143-1149.
[6]DENG Rong,FENG Y T,ZHANG Hao,et al.Numerical study of concrete mixing transport process and mixing mechanism of truck mixer[J].Engineering Computations:International Journal for Computer-Aided Engineering,2015,32(4):1041-1065.
[7]CHEN Yuliang,DU Yongyou,JIA Zhaohuan,et al.Design of digital display control devise system for concrete mixer truck[J].Applied Mechanics and Materials,2011,55/57:63-67.
[8]ZHAO Lijun,WENG Junliang,FENG Zhongxu.Experimental research on vibrating mixing of concrete based on twin-shaft mixer[J].Applied Mechanics and Materials,2011,253/255:349-353.
[9]杜占领.双卧轴振动搅拌机的试验研究[D].西安:长安大学,2003.
[10]MARIA C V,ILARIA G.Model-based method predicting useful life of concrete mixers[J].Betonwerk+FertigteilTechnik,2005,71(11):38-42.
[11]BAE M H,BAE T Y,CHO Y S,et al.The stress analysis of planetary gear system of mixer reducer for concrete mixer truck[J].Journal of Drive and Control,2015,12(4):77-81.
[12]VALIGI M C,GASPERINI I.Planetary vertical concrete mixers:Simulation and predicting useful life in steady states and in perturbed conditions[J].Simulation Modeling Practice and Theory,2007,15(10):1211-1223.
[13]TAKANO S.Study on a vehicle dynamics model for improving roll stability[J].JSAE Review,2003,24(2):149-156.
[14]贾天民.混凝土搅拌运输车侧倾稳定性数值仿真研究[D].长沙:国防科技大学,2012.
[15]黎邦权.基于运输工况下水泥混凝土搅拌运输车防侧翻技术研究[D].重庆:重庆交通大学,2013.
[16]LI Liuxing,JIANG Yuanyuan,LI Zhengmei,et al.Study on the vibration characteristics of a roller supporting horizontal centrifugal casting machine[J].Proc IMechE:Part K.J Multibody Dynamics,2016,230(1):99-109.
[17]吴昊.滚动轴承动特性及轴承-转子系统动力学模型研究[D].上海:华东理工大学,2010.
[18]吴雪蛟.混凝土搅拌运输车行驶平顺性建模与分析研究[D].武汉:华中科技大学,2011.
[19]HOUPERT L.An engineering approach to hertzian contact elasticity:Part I[J].Journal of Tribology,2001,123(3):582-588.
[20]MA Fangbo,LI Zhengmei,WU Baojie,et al.An accurate calculation method for heat generation rate in greaselubricated spherical roller bearing[J].Proc IMechE:Part J.J Engineering Tribology,2016,230(4):472-480.
[2]GAO Yaodong,MA Youzheng,KONG Xianggang.Analysis and optimization on the front supporter of concrete mixer truck[J].Applied Mechanics and Materials,2013,385/386:288-291.
[3]高耀东.混凝土搅拌运输车前支承强度分析及结构优化[D].内蒙古:内蒙古科技大学,2014.
[4]闫伟.混凝土搅拌车行驶非稳定工况状态仿真研究[D].重庆:重庆交通大学,2013.
[5]SUN Haixia,WEI Huakai,ZHAO Xiaofang,et al.Finite element analysis of structural strength of concrete mixing truck’s frame[J].Advanced Materials Research,2014:945/949:1143-1149.
[6]DENG Rong,FENG Y T,ZHANG Hao,et al.Numerical study of concrete mixing transport process and mixing mechanism of truck mixer[J].Engineering Computations:International Journal for Computer-Aided Engineering,2015,32(4):1041-1065.
[7]CHEN Yuliang,DU Yongyou,JIA Zhaohuan,et al.Design of digital display control devise system for concrete mixer truck[J].Applied Mechanics and Materials,2011,55/57:63-67.
[8]ZHAO Lijun,WENG Junliang,FENG Zhongxu.Experimental research on vibrating mixing of concrete based on twin-shaft mixer[J].Applied Mechanics and Materials,2011,253/255:349-353.
[9]杜占领.双卧轴振动搅拌机的试验研究[D].西安:长安大学,2003.
[10]MARIA C V,ILARIA G.Model-based method predicting useful life of concrete mixers[J].Betonwerk+FertigteilTechnik,2005,71(11):38-42.
[11]BAE M H,BAE T Y,CHO Y S,et al.The stress analysis of planetary gear system of mixer reducer for concrete mixer truck[J].Journal of Drive and Control,2015,12(4):77-81.
[12]VALIGI M C,GASPERINI I.Planetary vertical concrete mixers:Simulation and predicting useful life in steady states and in perturbed conditions[J].Simulation Modeling Practice and Theory,2007,15(10):1211-1223.
[13]TAKANO S.Study on a vehicle dynamics model for improving roll stability[J].JSAE Review,2003,24(2):149-156.
[14]贾天民.混凝土搅拌运输车侧倾稳定性数值仿真研究[D].长沙:国防科技大学,2012.
[15]黎邦权.基于运输工况下水泥混凝土搅拌运输车防侧翻技术研究[D].重庆:重庆交通大学,2013.
[16]LI Liuxing,JIANG Yuanyuan,LI Zhengmei,et al.Study on the vibration characteristics of a roller supporting horizontal centrifugal casting machine[J].Proc IMechE:Part K.J Multibody Dynamics,2016,230(1):99-109.
[17]吴昊.滚动轴承动特性及轴承-转子系统动力学模型研究[D].上海:华东理工大学,2010.
[18]吴雪蛟.混凝土搅拌运输车行驶平顺性建模与分析研究[D].武汉:华中科技大学,2011.
[19]HOUPERT L.An engineering approach to hertzian contact elasticity:Part I[J].Journal of Tribology,2001,123(3):582-588.
[20]MA Fangbo,LI Zhengmei,WU Baojie,et al.An accurate calculation method for heat generation rate in greaselubricated spherical roller bearing[J].Proc IMechE:Part J.J Engineering Tribology,2016,230(4):472-480.