液压破碎锤负载敏感控制系统特性及改进研究
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摘要
为探究冲击破岩掘进机液压破碎锤负载敏感控制系统的特性,利用键合图法建立了系统模型和状态方程。在此基础上,利用Amesim软件搭建了系统的仿真模型,仿真结果表明该系统存在压力、流量冲击。为改善液压破碎锤的使用性能、提高冲击破岩掘进机的效率和使用寿命,对破碎锤负载敏感控制系统进行改进。通过仿真分析可知,改进后的系统改善了活塞和阀芯的压力冲击以及泵的输出流量冲击,其中泵输出流量波动频率均降低了50%,限压阀阀芯压力峰值由1.8 MPa降到0.3MPa,能实现可随时调节液压破碎锤冲击能与冲击频率,同时仿真验证了系统的负载敏感特性。
In order to study the features of load sensitive control system for hydraulic breaking hammer of impact and breaking rock roadheader,a power bond graph method was applied to establish a system model and a state equation. Based on the circumstances,an Amesim was applied to set up the simulation model of system and simulation results showed there were pressure and flow impacts in the system. In order to improve the application performances of the hydraulic breaking hammer and to improve the efficiency and the service life of the impact and rock breaking roadheader,an load sensitive control system of the breaking hammer was improved. The simulation analysis showed that the improved system had improved the pressure impact of the piston and valve core as well as the output flow impact of the pump.Among them,the fluctuation frequency of the pump output flow was reduced by 50% in average and the pressure peak of the valve core for the pressure limited valve was reduced from 1.8 MPa to 0.3 MPa. The impact energy and impact frequency of hydraulic breaking hammer to be adjusted at any time could be realized and the simulation verified load sensitive features of system.
In order to study the features of load sensitive control system for hydraulic breaking hammer of impact and breaking rock roadheader,a power bond graph method was applied to establish a system model and a state equation. Based on the circumstances,an Amesim was applied to set up the simulation model of system and simulation results showed there were pressure and flow impacts in the system. In order to improve the application performances of the hydraulic breaking hammer and to improve the efficiency and the service life of the impact and rock breaking roadheader,an load sensitive control system of the breaking hammer was improved. The simulation analysis showed that the improved system had improved the pressure impact of the piston and valve core as well as the output flow impact of the pump.Among them,the fluctuation frequency of the pump output flow was reduced by 50% in average and the pressure peak of the valve core for the pressure limited valve was reduced from 1.8 MPa to 0.3 MPa. The impact energy and impact frequency of hydraulic breaking hammer to be adjusted at any time could be realized and the simulation verified load sensitive features of system.
引文
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[2]司癸卯,张青兰,段立立,等.基于AMESim的液压破碎锤液压系统建模与仿真[J].中国工程机械学报,2010,8(2):179-183.Si Guimao,Zhang Qinglan,Duan Lili,et al.AMESim-based modeling and simulation on hydraulic system of breaking hammers[J].Chinese Journal of Construction Machinery,2010,8(2):179-183.
[3]杨国平,方建,王亮.液压破碎锤系统结构参数优化分析[J].机械设计与制造,2012(11):133-135.Yang Guoping,Fang Jian,Wang Liang.Structure parameters optimization analysis of hydraulic hammer system[J].Machinery Design&Manufacture,2012(11):133-135.
[4]刘鹏,赵宏强,方晓瑜,等.考虑过流面积的气液联合式冲击器建模与仿真[J].中国机械工程,2013,24(4):463-467.Liu Peng,Zhao Hongqing,Fang Xiaoyu,et al.Modelling and simulation of pneumatic-hydraulic united impactor considering orifice areas[J].China Mechanical Engineering,2013,24(4):463-467.
[5]蒋世应,刘家伦,王振华,等.液压破碎锤系统参数优化的仿真研究[J].机床与液压,2016,44(14):122-124.Jiang Shiying,Liu Jialun,Wang Zhenhua,et al.Simulation research on parameters optimaization of hydraulic hammer’s system[J].Machine Tool&Hydraulics,2016,44(14):122-124.
[6]Antonio Giuffrida,Domenico Laforgia.Modeling and simulation of a hydraulic breaker[J].International Journal of Fluid Power,2005,6(2):47-56.
[7]Xu Z,Yang G,Wei H,et al.Dynamic performance analysis of gasliquid united hydraulic hammer[J].Engineering,2015,7(8):499-505.
[8]李晓豁,郭娜,郑有山,等.典型工况下冲击破岩掘进机工作机构力学特性研究[J].工程设计学报,2014,21(5):439-443.Li Xiaohuo,Guo Na,Zheng Youshan,et al.Study on mechanical properties of roadheader working mechanism for impacting and crushing rock under typical conditions[J].Chinese Journal of Engineering Design,2014,21(5):439-443.
[9]李晓豁,王金兴,郭娜,等.冲击破岩掘进机工作机构支臂与油缸铰点力仿真[J].辽宁工程技术大学学报:自然科学版,2015,34(7):862-865.Li Xiaohuo,Wang Jinxing,Guo Na,et al.Simulation of arm and hydraulic cylinder hinge point forces for impacting-crushing rockroadheader working mechanism[J].Journal of Liaoning Technical University:Nature Science,2015,34(7):862-865.
[10]Xin D Z,Chen S L,Wang Q F.Technology of load-sensitivity used in the hydraulic system of an all-hydraulic core rig[J].Journal of Coal Science&Engineering,2009(3):318-323.
[11]Mansour A E,Wirsching P H.Sensitivity factors and their application to marine structures[J].Marine Structures,1995,8(3):229-255.
[12]张春辉,赵静一,布丹,等.基于AMESim的负载敏感充液系统研究[J].液压与气动,2014(11):6-9.Zhang Chunhui,Zhao Jingyi,Bu Dan,et al.Research of loadsensing charging system based on AMESim[J].Chinese Hydraulics&Pnematics,2014(11):6-9.
[13]赵斌.履带行走式液压支架液压系统仿真分析[J].煤炭科学技术,2011,39(4):101-105.Zhao Bin.Simulation analysis on hydraulic system of crawler walking type hydraulic powered support[J].Coal Science and Technology,2011,39(4):101-105.
[14]Ma Zeyu,Wu Jinglai,Zhang Yunqing,et al.Recursive parameter estimation for load sensing proportional valve based on polynomial chaos expansion[J].Engineering Computations,2015,32(5):1343-1371.
[15]Yu Jingguo.Simulation analysis of pump control constant pressure variable technology hydraulic drilling system based on AMESim[J].Coal Engineering,2011(12):80-81.
[16]Gawthrop Peter J,Bevan Geraint P.Bond-graph modeling[J].IEEE Control Systems Magazine,2007,27(2):24-45.
[17]黄虎,陈光柱,蒋成林.全液压钻机负载敏感液压系统设计及仿真分[J].液压与气动,2015(3):71-74.Huang Hu,Chen Guangzhu,Jiang Chenglin.The design and simulation of load sensing hydraulic system in fully hydraulic driver drill[J].Chinese Hydraulics&Pneumatics,2015(3):71-74.
[18]陈博,杨国平,高军浩.基于AMESim气液联合式液压冲击器的建模与仿真[J].上海工程技术大学学报,2011,25(4):292-295.Chen Bo,Yang Guoping,Gao Junhao.Modeling and simulation of gas-liquid united hydraulic impactor based on AMESim[J].Journal of Shanghai Universiy of Engineering Science,2011,25(4):292-295.
[19]秦贞超,周志鸿,周梓荣,等.基于AMESim的水压凿岩机冲击机构建模与仿真[J].液压气动与密封,2010,30(12):32-34.Qin Zhenchao,Zhou Zhihong,Zhou Zirong,et al.Modeling and simulation of the impact of institutions of hydraulic rock drill based on AMESim[J].Hydraulics Pneumatics&Seals,2010,30(12):32-34.
[20]杨林.钻装机凿岩系统仿真分析及试验研究[J].煤炭科学技术,2013,41(S1):293-296.Yang Lin.Simulation analysis and experimental study of rock drilling system in drill loader[J].Coal Science and Technology,2013,41(S1):293-296.
[21]文泽军,王进,杨书仪,等.水压式打桩机冲击器液压系统建模与仿真分析[J].中国机械工程,2013,24(13):1809-1816.Wen Zejun,Wang Jin,Yang Shuyi,et al.Modeling and simulation analysis on impactor hydraulic system of water-powered pile driver[J].China Mechanical Engineering,2013,24(13):1809-1816.