| 基于AMESim的负载敏感液压系统防冲击特性的研究 |
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| 引用本文： | 汪小芳,张军,迪茹侠.基于AMESim的负载敏感液压系统防冲击特性的研究[J].液压与气动,2018,0(11):55-60. |
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| 作者姓名： | 汪小芳 张军 迪茹侠 |
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| 作者单位： | 1. 常州工程职业技术学院， 江苏常州213164；
2. 长安大学工程机械虚拟仿真实验教学中心， 陕西西安710064 |
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| 基金项目： | 江苏高校品牌专业建设工程资助项目（PPZY2015 C235）；校科研基金（11130300117030） |
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| 摘 要： | 针对负载敏感系统主阀瞬时启闭出现的液压冲击问题，提出在泵出口处使用防冲击阀来削减系统冲击的方法。采用AMESim建立了负载敏感液压系统防冲击的仿真模型，分析了在不同系统压力、流量、管道长度和主阀关闭时对系统的冲击影响。结果表明：系统冲击与负载压力无关，与主阀关闭时间、流量和管道长度有关。主阀关闭时间大于900 ms系统压力冲击基本消失；系统冲击压力随着流量的增加而不断升高，采用防冲击阀可有效削减系统冲击。
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| 关 键 词： | 负载敏感系统 变量泵 液压冲击 AMESim 防冲击阀 |
| 收稿时间： | 2018-08-30 |
Research Based on AMESim for Anti-shock Characteristics of Load-sensing Hydraulic System |
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| WANG Xiao-fang,ZHANG Jun,DI Ru-xia.Research Based on AMESim for Anti-shock Characteristics of Load-sensing Hydraulic System[J].Chinese Hydraulics & Pneumatics,2018,0(11):55-60. |
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| Authors: | WANG Xiao-fang ZHANG Jun DI Ru-xia |
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| Affiliation: | 1. Changzhou Vocational Institute of Engineering, Changzhou, Jiangsu213164;
2. Construction Machinery Simulation Experiment Teaching Center, Chang'an University, Xi'an， Shaanxi， 710064 |
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| Abstract: | To solve hydraulic shock during main flow control valves instantaneous opening and closing in load-sensing hydraulic system, a method of reducing the shock by an anti-shock valve is proposed. A simulation on an anti-shock load-sensitive system is done with AMESim, and the shock effect of load pressure, flow, pipe length, and main valve closing time on the system is analyzed. The results indicate that pressure shock is related to main valve closing time, flow and pipe length and is independent of load pressure in load-sensing system; the pressure shock basically disappears with the closing time of main flow control valve more than 900 ms; the pressure shock increases with increase of flow; the anti-shock valve can reduce pressure shock effectively. |
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