液压立柱试验台失载分析及对策  

Load Missing Analysis and Improvement Measures of Hydraulic Powered Leg Test Rig

作　　者：陈忠强[1] 郑本芳[2] 王建[2] 袁桂锋[1] 芮丰[1] 

机构地区：[1]煤炭科学研究总院上海研究院液压研究所,上海200030 [2]中煤北京煤矿机械有限责任公司,北京102400

出　　处：《煤炭科学技术》2009年第12期65-68,共4页Coal Science and Technology

摘　　要：针对液压立柱试验台回程液压缸杆端耳座损坏的情况,对液压立柱试验台及被试液压立柱所组成的物理系统进行了分析,获得了该物理系统的数学模型。基于物理系统仿真软件AMESim对该故障进行了再现,获知了故障的原因在于液压立柱试验台加载缸卸荷速度过快导致失载并在回程液压缸上产生的过大压力及杆端载荷。根据该仿真结论,对液压立柱试验台的液压系统提出了抑制加载缸卸荷速度/流量的6项改进措施,再次仿真结果显示回程液压缸的受力幅值从520 kN减小为120 kN,实际使用效果也支持了仿真结论,达到了预期的效果。According to the failure condition in the end base of the return hydraulic cylinder of the hydraulic powered leg test rig, the pa- per analyzed the physics system with the hydraulic powered leg test rig and the hydraulic powered leg. A mathematical model of the physics system was obtained from the analysis. Based on the physics system, the simulation software AMESim was applied to represent the fault. Then it was found that the cause of the fault was the unloading speed of the test rig too faster to have a load loss and too high load and end load on the return cylinder. According to the simulation conclusion, the paper provided the 6 improved measures to restrict the loading speed and flow of the loading cylinders for the hydraulic powered leg tesat rig. The re-simulation results showed that the resistance increased value of the return cylinder was reduced from 520 kN to 120 kN. The actual application results supported the simulation conclusion with predicted results.

关 键 词：液压立柱 试验台 失载 物理系统建模 仿真 

分 类 号：TD355.4[矿业工程—矿井建设]