掩护式液压支架四连杆承载特性响应分析  

Response Analysis of Four-link Bearing Characteristics of Shield Hydraulic Support

作　　者：袁祥 谢毅凡 张延军[1,2] 赵瑞豪 石慧婷 YUAN Xiang;XIE Yifan;ZHANG Yanjun;ZHAO Ruihao;SHI Huiting(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China;Research Center for Basic Hydraulic Components and Intelligent Manufacturing Engineering of Major Equipment,Taiyuan Shanxi 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]重大装备液压基础元件与智能制造工程研究中心,山西太原030024

出　　处：《机床与液压》2024年第9期128-133,共6页Machine Tool & Hydraulics

基　　金：博士科研启动基金项目(20222115,20232070);山西省高等学校科技创新计划项目(2023L179);山西省基础研究计划(202203021222193)。

摘　　要：四连杆作为液压支架的支撑部件,在冲击载荷下易发生失稳导致破坏。基于顶梁的承载特性,通过分析液压支架与围岩在不同情况下的耦合状态,进一步研究了液压支架四连杆的力学响应特性。基于Denavit-Hartenberg(D-H)理论,利用MATLAB软件,建立液压支架全姿态的动力学模型,分析液压支架的平衡缸和立柱的不同铰接位置对四连杆负载的影响。结果表明:立柱和平衡杠的安装位置越靠近顶梁前端,支架四连杆的负载越大,其对应的负载最大值也越大;前连杆最大值发生位置逐渐向煤壁方向移动,而后连杆则向采空区移动;立柱和平衡缸安装位置的前移增大了四连杆的负载,因此,合理的支架结构设计能在一定程度上优化支架的负载。As the supporting part of the hydraulic support,the four-link is prone to instability and damage under the impact load.In basis of the bearing characteristics of the top beam,the mechanical response characteristics of the four linkage of the hydraulic sup⁃port are further studied by analyzing the coupling state between the hydraulic support and the surrounding rock under different attitudes.Based on the Denavit-Hartenberg(D-H)theory and MATLAB software,a dynamic model of the full attitude of the hydraulic support is established,and the influence of different hinge positions of the equilibrium jack and the column on the four-link load is analyzed.The results show that the closer the position of the column and the equilibeium jack is to the front end of the top beam,the larger the load of the four linkages of the support is,and the larger the maximum value of the corresponding load is.The maximum position of the front linkage moves towards the coal wall and the rear linkage moves towards the goaf.The forward movement of the installation position of the column and equilibeium jack increases the load on the four connecting rods.Therefore,a reasonable design of the bracket structure can optimize the load on the bracket to a certain extent.

关 键 词：冲击载荷 支架顶梁 围岩耦合 优化设计 

分 类 号：TH16[机械工程—机械制造及自动化] TH122