煤矿机械

当前煤矿综采工作面供液系统普遍采用开关式液压阀控制压力与流量，存在冲击大、压力与流量调控精度不足等问题，严重制约液压支架的姿态精确控制。为提升供液质量，针对矿用高水基比例阀先导级开展结构设计及特性研究：通过仿真研究锥阀、球阀等阀口形式的流量特性及阀芯开启时的液动力规律，确定锥阀为最优结构；同时，分析阀口参数与电磁铁行程的匹配特性，显著提升了先导级控制效率。研究成果为智慧矿山建设中液压系统的智能化升级提供了重要理论支撑与技术参考。

Currently, on-off hydraulic valves are widely employed in fluid supply systems of fully mechanized mining faces for pressure and flow control, which exhibits problems such as large impact and insufficient precision in pressure and flow control, posing a critical constraint on the accurate attitude control of hydraulic support. To enhance the fluid supply performance, structural design and characteristic research were carried out for the pilot stage of mining high-water-based proportional valve. Through simulations, the flow characteristics of valve port configurations such as cone valves and ball valves, and the hydraulic force characteristics during vale core is open were studied, determined the cone valve as the optimal structure. At the same time, the matching characteristics between valve port parameters and electromagnet stroke was analyzed, achieving a significant improvement in the control efficiency of the pilot stage. The research results provide valuable theoretical insights and technical references for the intelligent upgrading of hydraulic system in smart mine construction.