液压滚切剪液压系统的换向冲击分析

›› 2012, Vol. ›› Issue (06): 1396-1401.

液压滚切剪液压系统的换向冲击分析

马立峰^1,2, 韩贺永¹, 黄庆学¹, 王晶¹, 周研¹

1. 太原科技大学重型机械教育部工程研究中心, 太原 030024;
2. 吉林大学超塑性研究所, 长春 130022

收稿日期:2011-12-07 出版日期:2012-11-01
通讯作者: 韩贺永(1982-),男,讲师,博士.研究方向:液压伺服系统动态特性.E-mail:wjhhy123@yahho.com.cn E-mail:wjhhy123@yahho.com.cn
基金资助:
"973"国家重点基础研究发展计划项目(2011CB612204);国家自然科学基金项目(51105264);山西省自然科学基金项目(2010011036-2).

Analysis of commutation impact in hydraulic system of hydraulic rolling shear

MA Li-feng^1,2, HAN He-yong¹, HUANG Qing-xue¹, WANG Jing¹, ZHOU Yan¹

1. Taiyuan University of Science and Technology, Heavy Machinery Engineering Research Center of the Ministry of Education, Taiyuan 030024, China;
2. Superplastic and Plastic Research Institute, Jilin University, Changchun 130022, China

Received:2011-12-07 Online:2012-11-01

摘要/Abstract

摘要： 液压滚切剪的剪切机构,建立了液压缸的力平衡方程。通过求解液压缸换向前后的两腔压力,比较对称阀控制非对称缸和非对称阀控制非对称缸两种形式的压力冲击。通过仿真软件模拟两种形式的液压缸换向冲击,可以看出非对称阀控制非对称缸的换向压力冲击较小,符合理论计算的结果。依据仿真结果设计合理的液压系统,有利于设备的安全运行。通过采集现场样机液压缸的两腔压力,证实了采用非对称阀控制非对称缸的方法能够有效地解决液压缸的换向冲击问题。

关键词: 液压传动与控制, 液压系统模型, 压力冲击

Abstract: The pressure equilibrium equations in the hydraulic cylinder were derived for the hydraulic rolling shear according to its structure. The pressure impacts in 2 cases, the one uses a symmetric valve to control an unsymmetric cylinder, the other uses an unsymmetric valve to control an unsymmetric cylinder, were compared by solving the 2 chamber pressures before and after the commutation. The hydraulic commutation impacts in the hydraulic cylinders in both cases were simulated by software and it was found that the latter case is characterized by less impact than the former case, which is in good agreement with the results of theoretical calculation. An improved hydraulic system was designed based on the simulation results to improve the operation satety of the equipment. The collected in-situ data of 2 chamber pressures of a prototype shear proved that using an unsymmetric valve to control an unsymmetric cylinder can alleviate the commutation impact effectively.

Key words: hydraulic transmission and control, hydraulic system model, pressure impact

中图分类号:

TH137

马立峰, 韩贺永, 黄庆学, 王晶, 周研. 液压滚切剪液压系统的换向冲击分析[J]. , 2012, (06): 1396-1401.

MA Li-feng, HAN He-yong, HUANG Qing-xue, WANG Jing, ZHOU Yan. Analysis of commutation impact in hydraulic system of hydraulic rolling shear[J]. , 2012, (06): 1396-1401.

参考文献

[1] Vardy A E, Brown J M B. Transient turbulent friction in smooth pipe flows[J]. Jouural of Sound and Vibration,2003,259(5):1011-1036.
[2] Wang J,Han H Y,Huang Q X,et al. Research on the impact pressure of the hydraulic rolling-cut shear[J]. Equipment and Technologies.Advanced Materials Research,2011,145:410-414.
[3] Ming Zhao,Ghidaoui M S. Efficient quasi-two-dimensional model for water hammer problems[J]. Journal of Hydraulic Engineering, American Society of Civil Engineers,2002,129:1007-1013.
[4] Gorman D G, Reese J M, Zhang Y L. Vibration of a flexible pipe conveying viscous pulsating fluid flow[J]. Journal of Sound and Vibration,2000,230(2):379-392.
[5] 李俊明,卢延辉, 周淑辉.高精度转矩加载液压系统的非连续控制[J].吉林大学学报:工学版, 2003,33(4):39-42. Li Jun-ming, Lu Yan-hui, Zhou Shu-hui. Noncontinuous control for hydraulic system with high degree accuracy of torque loading[J]. Journal of Jilin Universtiy(Engineering and Technology Edition), 2003,33(4):39-42.
[6] 黄庆学,马立峰,李进宝,等. 新型滚切剪非对称曲柄机构原理[J]. 机械工程学报,2008,44(5):119-123. Huang Qing-xue, Ma Li-feng, Li Jin-bao, et al. Principle of asymmetric crank mechanism of new-type rolling shear[J]. Chinese Journal of Mechanical Engineering, 2008,44(5):119-123.
[7] 马立峰,黄庆学,李颖,等.新型滚切剪空间剪切机构优化数学模型的建立及应用[J]. 四川大学学报,2008,40(2):170-174. Ma Li-feng, Huang Qing-xue, Li Ying, et al. Establishment and application of mathematical model on spatial shear mechanism optimization of new-type steel rolling shear[J]. Journal of Sichuan Universtiy(Engineering Science Edition), 2008,40(2):170-174.
[8] 韩贺永,黄庆学,张洪.液压矫直机液压伺服系统动态特性分析比较[J].吉林大学学报:工学版,2012,42(2):372-376. Han He-yong,Huang Qing-xue,Zhang Hong,et al. Analysis and comparison of servo system's dynamic characteristics on hydraulic leveler[J]. Journal of Jilin Universtiy(Engineering and Technology Edition),2012, 42(2):372-376.
[9] 韩贺永,黄庆学,马立峰,等. 液压滚切剪液压系统的研究[J].四川大学学报:工程科学版,2011,43(3):239-243. Han He-yong,Huang Qing-xue,Ma Li-feng,et al. Research on the hydraulic system of hydraulic rolling shear[J]. Journal of Sichuan Universtiy(Engineering Science Edition),2011,43(3): 239-243.
[10] Guo Bo, Li Yu-gui, Han He-yong. Analysis of asymmetric valve control asymmetric cylinder system of hydraulic leveler. advances in rolling equipment and technologies[J]. Advanced Materials Research, 2011,145:477-480.
[11] 徐东光,吴盛林,赵克定,等. 阀控非对称缸位置伺服控制系统正反向速度特性的理论分析与试验研究[J]. 液压与气动,2005(6):35-39. Xu Dong-guang,Wu Sheng-lin,Zhao Ke-ding,et al. The theoretical analysis and experimental study about the position servo system of value controlled single-rod cylinder[J]. Hydraulic Pressure and Pneumatics, 2005(6):35-39.
[12] 王栋梁,李洪人,张景春. 非对称阀控制非对称缸的分析研究[J]. 济南大学学报,2003,17(2):118-123. Wang Dong-liang, Li Hong-ren, Zhang Jing-chuan. Research of asymmetrical valve controlling asymmetrical cylinder[J]. Journal of Ji'nan University, 2003,17(2):118-123.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed