基于不同阀芯结构的新型电液激振器
|
摘要
针对液压激振与夹持独立的捣固装置,设计一种由阀芯旋转式四通换向阀和微行程双作用液压缸构成的新型电液激振器.在考虑阀口压降对旋转阀芯阀口过流面积影响的基础上,分别对无环形槽阀芯和有环形槽阀芯建立对应的阀口过流面积模型,对新型电液激振器在较高激振频率下的振动波形进行理论数值仿真和实验验证研究,为旋转阀芯结构设计提供理论指导和实验依据.分析结果表明:有环形槽阀芯的过流面积呈线性变化,无环形槽阀芯的过流面积呈非线性变化;有环形槽阀芯过流面积峰值、加速度峰值和位移峰值比无环形槽阀芯过流面积峰值、加速度峰值和位移峰值大;有环形槽的阀芯加速度曲线波动程度比无环形槽的阀芯加速度曲线波动程度小.矩形沟槽数量不影响过流面积曲线、加速度曲线和位移曲线变化趋势,且随着阀芯矩形沟槽数量的增加,加速度曲线波动也会有一定程度地增加.
Considering the new tamping device with hydraulic excitation and independent clamping movement,this paper proposed a new electro-hydraulic exciter consisting of spin valve and micro-displacement double-functioned hydraulic cylinder,established the corresponding flow area model of different spools and validated the waveform with high frequency theoretically and experimentally.The results show that the flow area of spool with ring groove is linear and the flow area of spool without ring groove is non linear. The flow area peak,acceleration peak and displacement peak of spool with ring groove are bigger than those of spool without ring groove.It is also found that acceleration carves exist fluctuation in degree,and that acceleration fluctuation of spool with ring groove is smaller than that of spool without ring groove.In addition,numbers of grooves don't affect trends of flow area,acceleration and displacement,but the acceleration fluctuation increases with the increase of grooves.
Considering the new tamping device with hydraulic excitation and independent clamping movement,this paper proposed a new electro-hydraulic exciter consisting of spin valve and micro-displacement double-functioned hydraulic cylinder,established the corresponding flow area model of different spools and validated the waveform with high frequency theoretically and experimentally.The results show that the flow area of spool with ring groove is linear and the flow area of spool without ring groove is non linear. The flow area peak,acceleration peak and displacement peak of spool with ring groove are bigger than those of spool without ring groove.It is also found that acceleration carves exist fluctuation in degree,and that acceleration fluctuation of spool with ring groove is smaller than that of spool without ring groove.In addition,numbers of grooves don't affect trends of flow area,acceleration and displacement,but the acceleration fluctuation increases with the increase of grooves.
引文
[1]郝建功,张耀成.新型电液激振装置的性能研究[J].太原理工大学学报,2003,34(6):706-709.HAO Jian-gong,ZHANG Yao-cheng.Research on the perform-ance of a new electro-hydraulic exciter[J].Journal of Taiyu-an University of Technology,2003,34(6):706-709.
[2]阮健,李胜,裴翔,等.2D阀控电液激振器[J].机械工程学报,2009,45(11):125-132.RUAN Jian,LI Sheng,PEI Xiang,et al.Electrohydraul-ic exciter with 2Dvalve[J].Chinese Journal of Mechanical Engineering,2009,45(11):125-132.
[3]龚国芳,杨林勇,刘毅,等.一种液压激振与夹持运动独立的捣固装置:中国,201010104672.9[P].2010-01-29.GONG Guo-fang,YANG Lin-yong,LIU Yi.A new type of ta-mping device with hydraulic excitation and independent cla-mping movement:China,201010104672.9[P].2010-01-29.
[4]刘毅,龚国芳,闵超庆,等.新型捣固装置的结构建模与仿真[J].浙江大学学报:工学版,2011,45(11):1941-1947.LIU Yi,GONG Guo-fang,MIN Chao-qing.Structure modeling and simulation of new type of tamping device[J].Journal of Zhejiang University:Engineering Science,2011,45(11):1941-1947.
[5]闵超庆,龚国芳,刘毅.新型捣固装置及其仿真研究[J].工程机械,2011,42(5):31-35.MIN Chao-qing,GONG Guo-fang,LIU Yi.Design and research on new type of tamping device[J].Construction Machinery and Equipment,2011,42(5):31-35.
[6]MIN Chao-qing,GONG Guo-fang,LIU Yi.Design and sim-ulation research on new tamper based on ADAMS[C]∥2010International Conference on Digital Manufacturing&Aut-omation.Hunan:IEEE,2010:494-498.
[7]张玮昌.激振设备及其应用[J].电动工具,2003(4):7-12.ZHANG Wei-chang.Application of excitation equipment[J].Electric Tool,2003(4):7-12.
[8]IPHAR M.ANN,ANFIS.Performance prediction models for hydraulic impact hammers[J].Tunnelling and Underground Technology,2012,27(1):23-29.
[9]龚国芳,刘毅,闵超庆,等.用于液压激振器的阀芯旋转式四通换向阀:中国,201010100305.1[P].2010-01-09.GONG Guo-fang,LIU Yi,MIN Chao-qing.A new spin valve for electrohydraulic exciter:China,201010100305.1[P].2010-01-09.
[10]龚国芳,闵超庆,刘毅,等.微行程双作用液压缸:中国,201110229855.8[P].2011-08-11.GONG Guo-fang,MIN Chao-qing,LIU Yi.Micro-displacement double functioned oscillation cylinder:China,201110229855.8[P].2011-08-11.
[11]龚国芳,刘毅,闵超庆,等.一种捣固装置的液压激振系统:中国,201010520147.5[P].2010-10-26.GONG Guo-fang,LIU Yi,MIN Chao-qing.A new electro-hyd-raulic exciter:China,201010520147.5[P].2010-10-26.
[2]阮健,李胜,裴翔,等.2D阀控电液激振器[J].机械工程学报,2009,45(11):125-132.RUAN Jian,LI Sheng,PEI Xiang,et al.Electrohydraul-ic exciter with 2Dvalve[J].Chinese Journal of Mechanical Engineering,2009,45(11):125-132.
[3]龚国芳,杨林勇,刘毅,等.一种液压激振与夹持运动独立的捣固装置:中国,201010104672.9[P].2010-01-29.GONG Guo-fang,YANG Lin-yong,LIU Yi.A new type of ta-mping device with hydraulic excitation and independent cla-mping movement:China,201010104672.9[P].2010-01-29.
[4]刘毅,龚国芳,闵超庆,等.新型捣固装置的结构建模与仿真[J].浙江大学学报:工学版,2011,45(11):1941-1947.LIU Yi,GONG Guo-fang,MIN Chao-qing.Structure modeling and simulation of new type of tamping device[J].Journal of Zhejiang University:Engineering Science,2011,45(11):1941-1947.
[5]闵超庆,龚国芳,刘毅.新型捣固装置及其仿真研究[J].工程机械,2011,42(5):31-35.MIN Chao-qing,GONG Guo-fang,LIU Yi.Design and research on new type of tamping device[J].Construction Machinery and Equipment,2011,42(5):31-35.
[6]MIN Chao-qing,GONG Guo-fang,LIU Yi.Design and sim-ulation research on new tamper based on ADAMS[C]∥2010International Conference on Digital Manufacturing&Aut-omation.Hunan:IEEE,2010:494-498.
[7]张玮昌.激振设备及其应用[J].电动工具,2003(4):7-12.ZHANG Wei-chang.Application of excitation equipment[J].Electric Tool,2003(4):7-12.
[8]IPHAR M.ANN,ANFIS.Performance prediction models for hydraulic impact hammers[J].Tunnelling and Underground Technology,2012,27(1):23-29.
[9]龚国芳,刘毅,闵超庆,等.用于液压激振器的阀芯旋转式四通换向阀:中国,201010100305.1[P].2010-01-09.GONG Guo-fang,LIU Yi,MIN Chao-qing.A new spin valve for electrohydraulic exciter:China,201010100305.1[P].2010-01-09.
[10]龚国芳,闵超庆,刘毅,等.微行程双作用液压缸:中国,201110229855.8[P].2011-08-11.GONG Guo-fang,MIN Chao-qing,LIU Yi.Micro-displacement double functioned oscillation cylinder:China,201110229855.8[P].2011-08-11.
[11]龚国芳,刘毅,闵超庆,等.一种捣固装置的液压激振系统:中国,201010520147.5[P].2010-10-26.GONG Guo-fang,LIU Yi,MIN Chao-qing.A new electro-hyd-raulic exciter:China,201010520147.5[P].2010-10-26.