30000kN液压支架试验台自动调高液压系统设计  

Design on Hydraulic Power System of Automatic Height Adjustment in 30 000 kN Hydraulic Powered Support Test Rig

作　　者：赵锐[1,2] 沙宝银[1,2] 赵忠辉[1,2] 王勇[1,2] 

机构地区：[1]煤炭科学研究总院检测研究分院,北京100013 [2]煤炭资源开采与环境保护国家重点实验室(煤炭科学研究总院),北京100013

出　　处：《煤炭科学技术》2011年第12期99-101,共3页Coal Science and Technology

摘　　要：为改变目前试验台调高完全依赖眼看手动的落后状况,设计一套自动调高液压系统,用于强力液压支架试验台。该系统采用高精度齿轮分流马达为4根调高油缸匹配流量,并配以旁路节流调速方式实现自动调高。调高过程中,通过位移传感器实时反馈4根油缸之间的高度偏差,当高度偏差达到设定值时,及时控制相对应旁路节流调速,杜绝试验台的升降平台出现卡死的情形。通过现场实际应用表明,该系统可实现强力液压支架试验台的自动调高,调高速度控制在5～10 mm/s,最终调高对孔精度达1 mm。In order to improve the backward status of hand operation for the height adjustment of the present hydraulic powered support test rig,a completed set automatic height adjustment hydraulic system was designed for the powerful hydraulic powered support test rig.A high accurate gear diffluence motor of the system was applied to provide the matched flow for the four height adjustment cylinders and the bypass throttle adjustment mode could be applied to the automatic height adjustment.During the height adjustment,the displacement sensor could be applied to timely feed back the height difference between the four cylinders.When the height difference reached at the set value,the relative bypass throttle adjustment could be timely controlled to eliminate the lifting platform jammed occurred.The site actual application showed that the system would have an automatic lifting function of the powerful hydraulic powered support test ring.The height adjustment speed could be controlled at 5~10 mm/s and the final aligning accuracy to the borehole could be 1 mm.

关 键 词：液压支架试验台 自动调高 液压系统 节流调速 

分 类 号：TD35[矿业工程—矿井建设]