无阀控自配流液压冲击器系统建模与仿真

中国机械工程 ›› 2010, Vol. 21 ›› Issue (23): 2794-2798.

无阀控自配流液压冲击器系统建模与仿真

刘忠1,2;彭金艳2;梁承杰2;李伟2

1.常熟理工学院，常熟，225500

2.湖南师范大学，长沙，410081

出版日期:2010-12-10 发布日期:2010-12-15
基金资助:
湖南省教育厅重点科研基金资助项目(2008A047)
Key Program of Hunan Provincial Scientific Research Foundation of Ministry of Education of China（No. 2008A047）

Modeling and Simulation of Valveless Hydraulic Impactor

Liu Zhong1,2;Peng Jinyan2;Liang Chengjie2;Li Wei2

1.Changshu Institute of Technology,Changshu,Jiangsu,215500

2.Hunan Normal University, Changsha, 410081

Online:2010-12-10 Published:2010-12-15
Supported by:
Key Program of Hunan Provincial Scientific Research Foundation of Ministry of Education of China（No. 2008A047）

摘要/Abstract

摘要：

提出一种新型无阀控自配流液压冲击器，分析了它的结构原理及特点。分别建立了冲击器回程和冲程时的数学模型;运用AMESim建立仿真模型并进行动态仿真，根据仿真曲线详细分析了系统供液流量及氮气腔初始充气压力对冲击器工作性能的影响。结果表明：在氮气腔初始充气压力一定时，供液流量必须达到一定值才能启动冲击器，在一定范围内，会出现使冲击性能最佳的流量值;当供液流量一定时，氮气腔初始充气压力较低时，冲击能和冲击效率较低;充气压力过高时，冲击器无法开启。该冲击系统在供液流量为75L/min、氮气腔初始充气压力为2.0MPa时，冲击性能最佳。

关键词:

无阀自配流液压冲击器, 数学模型, AMESim, 动态仿真

Abstract:

A new type valveless hydraulic impactor was proposed，and its structure, operational principles and characteristics were analyzed. The mathematical models of return stroke and impact stroke were established respectively. By means of AMESim, the simulation model was obtained and the dynamic simulation was carried out. The influence of the providing flow rate and the initial pressure of the nitrogen chamber on the working performance was studied. While the initial pressure of the nitrogen chamber is constant, the hydraulic impactor will be started only the providing flow rate reaches to a certain value. And in certain limits, the providing flow rate which can make the impactor works under the best performance is found. And when the providing flow rate is constant, the impactor energy and efficiency are low while the initial pressure of the nitrogen chamber is rather low; but when the initial pressure of the nitrogen chamber is too high, the impactor cannot be started. Through the simulation, a conclusion is reached: the impactor working performance is the best when the providing flow rate is 75L/min and the initial pressure of the nitrogen chamber is 2.0MPa. The above work can make the hydraulic impactor design become more exact and proper.

Key words: valveless hydraulic impactor, mathematical model, AMESim, dynamic simulation

中图分类号:

刘忠, 彭金艳, 梁承杰, 李伟.

无阀控自配流液压冲击器系统建模与仿真

[J]. 中国机械工程, 2010, 21(23): 2794-2798.

LIU Zhong, BANG Jin-Yan, LIANG Cheng-Jie, LI Wei.

Modeling and Simulation of Valveless Hydraulic Impactor

[J]. China Mechanical Engineering, 2010, 21(23): 2794-2798.

参考文献

[1]刘忠[1],龙国键[2],褚福磊[3],杨国平[3].国内外液压冲击机械的发展研究[J].建筑机械：上半月,2003(7):29-31.
[2]Gein A. Valveless Pneumatic Hammer: US, 4402370 [P]. 1983-09-06.
[3]廖义德,许建武.无阀型液压冲击器计算机辅助设计[J].武汉化工学院学报,1994,16(2):31-35.
[4]廖义德.无阀型液压冲击器的改进及设计方法初探[J].凿岩机械气动工具,1993(3):7-11.
[5]杨维钢牛昆陈永星等.无阀液压凿岩机冲击器.金属矿山,1981,(12):9-13.
[6]郭润良.液压凿岩机专题讲座(一).凿岩机械气动工具,1990,(3):67-73.
[7]郭润良.液压凿岩机专题讲座(二).凿岩机械气动工具,1990,(4):60-69.
[8]张新[1],杨襄壁[2].气液联合型液压碎石器数字仿真研究[J].凿岩机械气动工具,1998(2):32-36.
[9]赵宏强.新型液压冲击器仿真与优化研究[J].凿岩机械气动工具,2001(1):12-26.
[10]林红[1],杨国平[2],王习兵[3],范思源[1].液压冲击器回程运动和冲程运动仿真研究[J].机床与液压,2008,36(5):156-160.
[11]赵宏强[1],何清华[1],朱建新[1],陈欠根[1].新型液压冲击器气液作功分配比研究[J].凿岩机械气动工具,2004(2):18-23.
[12]高澜庆段晓宏方湄.液压凿岩机高压蓄能器的最佳耦合研究.凿岩机械气动工具,1988,(1):14-19.
[13]丘铭军[1],赵航[1],姚培[1].AMEsim软件及其应用[J].筑路机械与施工机械化,2005,22(8):60-61.
[14]余佑官[1],龚国芳[1],胡国良[1].AMESim仿真技术及其在液压系统中的应用[J].液压气动与密封,2005(3):28-31.
[15]肖岱宗[1].AMESim仿真技术及其在液压元件设计和性能分析中的应用[J].舰船科学技术,2007,29(A01):142-145.
[16]付永领, 祁晓野.AMESIM系统建模和仿真从入门到精通[M],2006.