摘要
针对目前试验装备力不足的现状,根据GB 25974.2—2010中对液压支架千斤顶应进行“压缩和拉伸让压试验”的新要求,开发研制了6000 kN液压支架千斤顶检测装备。介绍了液压支架千斤顶检测技术及装备的主体结构、液压系统和测控系统,并利用有限元力学分析、流量放大控制技术、电液比例控制技术等手段,研发了装备的主体结构、液压系统、测控系统等。验证结果表明,该检测装备解决了超低速工况下拉伸和压缩让压的技术难题,装备满足力学性能及控制精度的要求,主体结构可以满足外加载6000 kN、拉伸载荷3900 kN、一次外加载行程1500 mm的试验要求,符合GB 25974.2—2010和EN 1804-2:2002对液压支架千斤顶的检测要求。
Aiming at the current situation of insufficient capacity of test equipment and the requirement of“compression and stretch released pressure yield test”for hydraulic support jack in GB 25974.2—2010,6000 kN hydraulic support jack detection equipment had been developed.The main structure,hydraulic system and measurement and control system of hydraulic support jack detection technology and equipment had been introduced.The main structure,hydraulic system and measurement and control system of the equipment had been developed by means of finite element mechanics analysis,flow amplification control technology and electro-hydraulic proportional control technology.The experimental results of the testing equipment showed that it could not only solve the technical problems of tension and compression yielding under ultra-low speed conditions,and make the equipment meet the requirements of mechanical properties and control accuracy,but also had met the requirements of the main structure that can be loaded 6000 kN,the tensile load 3900 kN,and the test of 1500 mm one-time external loading stroke,which could meet the inspection requirements for hydraulic suppport jack in GB 25974.2—2010 and EN 1804-2:2002.
作者
杨建新
YANG Jianxin(Coal Science and Technology Research Institute Co., Ltd., Beijing 100013, China;National Coal Mine Support Equipment Quality Supervision and Inspection Center, Beijing 100013, China)
出处
《煤矿机电》
2020年第2期12-16,23,共6页
Colliery Mechanical & Electrical Technology
基金
煤科院基础研究基金资助项目(2018JC02)。
