| 负载敏感制动阀设计及仿真分析 |
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| 引用本文： | 王亚军,姚平喜.负载敏感制动阀设计及仿真分析[J].液压与气动,2018,0(6):25-30. |
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| 作者姓名： | 王亚军 姚平喜 |
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| 作者单位： | 1. 太原理工大学机械工程学院， 山西太原030024；
2. 精密加工山西省重点实验室， 山西太原030024 |
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| 基金项目： | 山西省自然科学基金（2011011025 3）；山西省研究生优秀创新项目（20123033） |
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| 摘 要： | 针对液压缸制动过程中出现的液压冲击，为实现对液压缸的双向缓冲制动，借助负载敏感技术理论，提出了一种新型的负载敏感制动阀。对阀体结构特点及其工作原理作了进一步阐述，并建立相应工况的数学模型，借助MATLAB/Simulink进行动态仿真。通过分析仿真结果，该阀能够匹配液压缸的制动力与负载惯性力并实现连续制动，相较于现有的溢流阀制动回路，其制动距离与制动时间都较短，制动过程中产生的冲击、震动和噪声较小，可以对液压缸的运行实现双向缓冲制动的效果。
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| 关 键 词： | 制动阀 Simulink 动态仿真 负载敏感 |
| 收稿时间： | 2018-04-26 |
Design and Simulation Analysis of Load Sensitive Brake Valve |
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| WANG Ya-jun,YAO Ping-xi.Design and Simulation Analysis of Load Sensitive Brake Valve[J].Chinese Hydraulics & Pneumatics,2018,0(6):25-30. |
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| Authors: | WANG Ya-jun YAO Ping-xi |
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| Affiliation: | 1. College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi030024;
2. Shanxi Key Laboratory of Precision Machining, Taiyuan, Shanxi030024 |
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| Abstract: | Aiming at hydraulic shock appeared in the process of hydraulic cylinder brake, we put forward a new kind of load sensitive brake valve in order to achieve the two way buffer brake of hydraulic cylinder with the aid of the load sensing technology. We further elaborate structure characteristics and working principle of valve, then we establish a mathematical model of corresponding working conditions and carry out dynamic simulation by means of MATLAB/Simulink. The research results show that the valve can match braking force with load inertia force of hydraulic cylinder and achieve continuous braking. Compared with an existing overflow valve for hydraulic cylinder brake circuit, this valve shows shorter braking distance, less braking time, smaller braking vibration and less noise, and it can realize the bi directional buffer brake on operation of hydraulic cylinder. |
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