基于空间力系的液压支架顶梁承载特性感知分析  

Research on the Sensing Method of Carrying Capacity of Hydraulic Support Canopy Based on Space Force System

作　　者：李恒 高飞[1,2] 袁祥 廉自生[1,2] LI Heng;GAO Fei;YUAN Xiang;LIAN Zisheng(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan Shanxi 030024,China;Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment,Taiyuan University of Technology,Taiyuan Shanxi 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,山西太原030024 [2]太原理工大学煤矿综采装备实验室,山西太原030024

出　　处：《机床与液压》2023年第17期171-176,共6页Machine Tool & Hydraulics

基　　金：国家自然科学基金项目联合基金项目(U1610251);山西省关键核心技术和共性技术研发公关专项项目(2020XXX003)。

摘　　要：针对煤矿井下液压支架顶梁受外载合力状态监测方面的空缺问题,提出一种新型传感器感知方法,在监测立柱和平衡缸工作状态的前提下,探究不同角度剪切力对顶梁与掩护梁铰接处销轴应变的影响规律。使用多体动力学分析软件ADAMS对特定高度下两柱式液压支架三维模型进行模拟仿真,分析在支架极限载荷区顶梁连接销轴处铰接力、液压缸工作阻力与顶梁外载荷之间的关系,并进一步建立销轴受力三维模型,探索盲孔应变相应的变化规律。结果表明:在顶梁不同承载位置受外载合力达到极限水平时,销轴传感器支撑力角度区间变化规律明显,且剪切力对销轴盲孔应变变化影响较大,依据空间力平衡关系分析各传感器数据即可反解出支架顶梁负载状态。Aiming at the vacancy problem in the current state monitoring of the external load resultant force of the hydraulic support canopy in coal mines,a new sensor sensing method was proposed.Under the premise of monitoring the working state of the column and the balance cylinder,the influence law of different angle shear forces on the pin strain at the hinge of the top beam and the shield beam was explored.The multi-body dynamics analysis software ADAMS was used to simulate the 3D model of the two-column hydraulic support at a specific height,and the hinge force at the connecting pin of the top beam,the working resistance of the hydraulic cylinder and the external load of the top beam in the extreme load zone of the support were analyzed.At the same time,a 3D model of the force on the pin shaft was established to analyze the strain change law of the blind hole.The results show that when the external load resultant force at different bearing positions of the top beam reaches the limit level,the angle interval change rule of the support force of the pin sensor is obvious,and the shear force has a great influence on the strain change of the pin blind hole.The sensor data are easy to deduce the load state of the support top beam according to the space force balance relationship.

关 键 词：液压支架 空间力系 虚拟样机模型 承载特性 销轴传感器 

分 类 号：TD355[矿业工程—矿井建设]