摘要
对一种用于起重机起升系统的平衡阀进行动态特性分析,讨论了不同工况下平衡阀的工作原理,找出影响系统稳定性的各项因素,分析了不同阻尼孔直径和平衡阀阀口截面梯度对平衡阀流量特性的影响,同时提出结构优化方案。仿真和测试结果表明:所提出的优化方案可以有效改善平衡阀的动态特性,减小负载下落时系统液压波动现象,为平衡阀的研究设计提供理论支持。
The dynamic characteristics of a balance valve used in crane lifting system were analyzed,the working principle of the balance valve under different working conditions was discussed,and the factors affecting the stability of the system are comprehensively analyzed.The influence of the diameter of the damped hole and the section gradient of the valve port on the flow characteristics of the balance valve was analyzed.At the same time,the structural optimization scheme was proposed.The simulation and test results show that reducing the diameter of the damping hole of the balance valve could obviously increase the stability of the system,but too small diameter will increase the throttling loss and affect the efficiency of the system.Through structural improvement,the dynamic characteristics of the balance valve could be effectively improved,and the pressure fluctuation amplitude of the system can be reduced when the load drops,thus providing a reference for the design and improvement of the balance valve.
作者
马骏
Jun MA(Changchun Vocational Institute of Technology,Changchun 130000,China)
出处
《机床与液压》
北大核心
2019年第6期104-108,共5页
Machine Tool & Hydraulics
基金
National Natural Science Foundation of China(31172144)
The 13th Five-Year Social Science Project of Jilin Provincial Education Department(JJKH20190441SK)~~
关键词
起重机
平衡阀
优化设计
Crane
Balance valve
Optimal design
作者简介
Corresponding author:Jun MA. E-mail:majun_cczy@163.com.
