主动安全液压支架顶梁装置结构设计与分析  

Structural design and analysis of the top beam device of active safety hydraulic support

作　　者：李华强[1] 张涛 邵光波 LI Huaqiang;ZHANG Tao;SHAO Guangbo(School of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学机械工程学院,呼和浩特010051

出　　处：《内蒙古工业大学学报（自然科学版）》2024年第3期257-263,共7页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区科技计划项目(2021GG0259);内蒙古自治区直属高校基本科研业务费项目(JY20220223)。

摘　　要：煤壁片帮与顶板冒落是影响煤矿安全开采的重要因素,目前常见的液压支架有效支护面积大,移架脱离顶板时间长,很容易发生煤壁片帮与顶板冒落造成支架再次支护失稳等问题。通过对顶板失稳机理进行分析,建立了等效砌体梁结构的数学模型,计算得到了回采工作面顶板发生破坏的强度条件以及支护面积对顶板发生破坏的影响,同时提出了主动安全液压支架顶梁装置的设计,对现有液压支架顶梁在满足原有功能的基础上,设计了顶梁装置,实现了对顶板的有效支护和相对主梁的步足式移动,达到了液压支架主动安全支护的目的,从而满足降低砌体梁发生破坏的概率。通过对ZY4800/18/38液压支架的改进,并对其进行典型状态下顶梁装置有限元分析,结果满足设计要求。The collapse of coal wall slices and the falling of roof are important factors affecting the safe mining of coal mines.Currently,common hydraulic supports have a large effective supporting area and a long time for moving and disengaging from the roof,which easily leads to problems such as coal wall collapse and roof fall,causing the support to become unstable again.By analyzing the mechanism of roof instability,a mathematical model of an equivalent masonry beam structure was established.The model calculated the strength conditions for the roof to be damaged during the mining process,as well as the influence of the supporting area on roof damage.At the same time,the design of an active safety hydraulic support beam device was proposed.On the basis of meeting the original functions of the existing hydraulic support beam,the beam device was designed to achieve effective support for the roof and incremental movement relative to the main beam.This accomplishes the goal of active safety support for hydraulic supports and reduces the probability of masonry beam damage.The improvement of the ZY 4800/18/38 hydraulic support was carried out,and finite element analysis was performed on the beam device under typical conditions,with the results meeting the design requirements.

关 键 词：液压支架 主动安全 砌体梁 顶梁装置 有限元 

分 类 号：TH122[机械工程—机械设计及理论] TD355.4[矿业工程—矿井建设]