摘要
分析了采用补偿阀、高压内溢流式阀、浮动双向锁、自动平衡阀等控制液压支架平衡千斤顶的原理及不足,根据平衡千斤顶容腔压力特点,提出了一种液压支架平衡千斤顶控制回路优化设计方案。通过合理配置液控换向阀、低压卸荷阀等元件位置,可实现平衡千斤顶容腔的自动补液与卸荷,解决安全阀非紧急情况下频繁开启的问题。仿真和试验结果验证了该优化设计方案的有效性。
Principles and shortcomings of balance jack control of hydraulic support by use of compensation valve,high pressure internal overflow valve,floating two-way lock and automatic balance valve respectively were analyzed,and an optimal design scheme of the balance jack control loop of hydraulic support was proposed according to pressure characteristics of the balance jack cavity.Automatic fluid replacement and unloading of the balance jack cavity are realized by reasonably disposing components such as hydraulic pressure controlled reversing valve and low pressure unloading valve,so as to solve problem of safety valve frequently opening under non-emergency situation.The simulation and test results verify effectiveness of the optimal design scheme.
出处
《工矿自动化》
北大核心
2018年第2期13-18,共6页
Journal Of Mine Automation
基金
中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2016-279)
青岛市应用基础研究计划资助项目(15-9-1-32-jch)
山东科技大学人才引进科研启动基金资助项目(2015RCJJ025)
关键词
液压支架
平衡千斤顶
控制回路
补液
卸荷
hydraulic support
balance jack
control loop
fluid replacement
unloading
