煤炭工程 ›› 2024, Vol. 56 ›› Issue (11): 158-164.doi: 10.11799/ce202411023

• 研究探讨 • 上一篇    下一篇

基于外控恒压调速阀的垛式液压支架支柱承载特性分析

王传礼,高语罕,何涛,等   

  1. 1. 安徽理工大学机械工程学院
    2. 安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室
    3. 安徽理工大学机电工程学院
  • 收稿日期:2024-05-09 修回日期:2024-07-09 出版日期:2023-11-20 发布日期:2025-01-03
  • 通讯作者: 何涛 E-mail:taoheaust@163.com

Analysis of the bearing characteristics of stacked hydraulic strut column based on external control constant pressure speed regulating valve

  • Received:2024-05-09 Revised:2024-07-09 Online:2023-11-20 Published:2025-01-03

摘要: 针对垛式液压支架降柱过程中立柱失速的问题,基于外控恒压调速阀改进平衡回路,研究立柱在负载作用下的承载特性。利用AMESim搭建液压支架平衡回路的仿真模型模拟立柱工作过程,分析外控恒压调速阀的结构参数对立柱承载特性及外控恒压调速阀阀口流量特性的影响。结果表明:立柱受到冲击时,安全阀开启卸荷|立柱下行时平衡回路作用防止立柱失速。减小外控恒压调速阀的阻尼孔直径与调控活塞面积可提高系统响应速度,平衡回路稳定性能提升,立柱承载特性得到改善。

关键词: 垛式液压支架, 平衡回路, 外控恒压调速阀, 承载特性

Abstract: Aiming at the problem of column stalling during the lowering process of palletised hydraulic strut, the balancing circuit is improved based on the externally controlled constant pressure speed control valve, and the load bearing characteristics of the column under load are investigated. The simulation model of hydraulic support balance circuit was established by AMESim software to simulate the work-ing process of the column , and changed the structural parameters of the externally controlled constant pressure speed control valve to analyse the load-bearing characteristics of the column as well as the flow characteristics of the externally controlled constant pressure speed control valve.The results show that: when the column is impacted, the safety valve opens to unload; when the column goes down, the balancing circuit works to prevent the column from stalling.Reducing the diameter of the damping hole and the area of the regulating piston of the externally controlled constant pressure speed control valve can enhance the response speed of the system, the stability of the balancing circuit can be improved, and get the suitable load bearing characteristics of the column.

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