摘要
针对煤矿井下顶管施工中顶进系统的4个油缸出现不同顶进速度时会引起顶管方向偏移的问题,设计了一种基于负载敏感控制技术的矿用顶管掘进机顶进液压系统,介绍了顶管掘进机结构和工作原理,详细分析了液压系统工作原理和参数计算。液压系统采用电液控制的四联负载敏感多路阀调节油泵流量和压力,使得每个顶进油缸的速度不受外部负载变化的影响,从而实现了同步顶进,减少了各油缸顶进速度不均衡造成的顶偏现象。
In view of the problem that it will lead to jacking direction offset while four oil cylinders in the jacking system for underground coal mine jacking construction had different jacking speeds, a pipe- jacking hydraulic system based on load sensitive control technology was designed. The structure and working principle of pipe jacking machine, working principle and parameters calculation of hydraulic system were analyzed in details. The hydraulic system uses electro-hydraulic controlled quadruple load- sensitive multi-way values to regulate pump flow and pressure so that the speed of each jack cylinder is not affected by external load changes, and synchronous jacking is achieved, and direction offset phenomenon caused by imbalance of jacking speed of fuel tanks is reduced.
出处
《工矿自动化》
北大核心
2017年第6期1-5,共5页
Journal Of Mine Automation
基金
国家科技重大专项资助项目(2016ZX05045-003)
中国煤炭科工集团科技创新基金项目(2014ZD007)
关键词
煤炭开采
顶管掘进机
顶进液压系统
顶进速度
负载敏感控制
电液比例控制
coal mining
pipe-jacking machine
jacking hydraulic system
jacking speed
load sensitive control
electro-hydraulic proportional control
