巷道临时支护支架推移油缸液压同步系统设计
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摘要
针对巷道临时支护支架的推移油缸在工作面工作过程中承受的偏载,设计了负载敏感系统与同步阀相结合的液压同步系统,使得推移油缸在承受偏载下也能达到较高的位移同步精度;使用AMESim仿真软件对该液压同步系统进行了建模和仿真分析,得到推移油缸的位移同步精度为0.68%;搭建了推移油缸液压同步系统的试验台,在推移油缸承受偏载下对液压同步系统进行了试验研究和分析,得到该系统推移油缸位移同步精度为1.32%,满足1.5%以内的设计目标。研究结果表明:负载敏感系统结合同步阀能在油缸承受偏载时抑制压力和流量的波动,保证流量不变,使得油缸同步运行,同时具有调速方便和节能的优点。
In view of the unbalance load of laneway temporary hydraulic support,the hydraulic synchronous system is designed for pushing cylinders to achieve high displacement synchronous precision under unbalance loading condition. The hydraulic synchronous system is the combination of the load-sensing system and the synchronous valve.AMESim model of the pushing cylinders hydraulic synchronous system based on the combination is built. The synchronous precision is 0. 68% in the simulation when pushing cylinders bear unbalance load. Based on the hydraulic synchronous system test program which designed in this study,a testbed of the hydraulic synchronous system is set up. The result of the test of the hydraulic synchronization system shows that the pushing cylinders' displacement synchronization precision is 1. 32%,which can achieve the design objective within 1. 5%. The results show that the combination of the load-sensing system and the synchronous valve can restrain the fluctuation of pressure and flow when cylinders are subjected to unbalance load,and ensure pushing cylinders operate synchronously. At the same time it has the advantages of speed regulation conveniently and energy conservation.
In view of the unbalance load of laneway temporary hydraulic support,the hydraulic synchronous system is designed for pushing cylinders to achieve high displacement synchronous precision under unbalance loading condition. The hydraulic synchronous system is the combination of the load-sensing system and the synchronous valve.AMESim model of the pushing cylinders hydraulic synchronous system based on the combination is built. The synchronous precision is 0. 68% in the simulation when pushing cylinders bear unbalance load. Based on the hydraulic synchronous system test program which designed in this study,a testbed of the hydraulic synchronous system is set up. The result of the test of the hydraulic synchronization system shows that the pushing cylinders' displacement synchronization precision is 1. 32%,which can achieve the design objective within 1. 5%. The results show that the combination of the load-sensing system and the synchronous valve can restrain the fluctuation of pressure and flow when cylinders are subjected to unbalance load,and ensure pushing cylinders operate synchronously. At the same time it has the advantages of speed regulation conveniently and energy conservation.
引文
[1]倪继勇.自移式掘进机辅助支护设备液压控制系统的研究[D].阜新:辽宁工程技术大学,2012.NI Jiyong.The Research on Hydraulic Control System of Selfmotion Assistanced Powered Support Equipment for Tunneling Machine[D].Fuxin:Liaoning Technical University,2012.
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[11]贾剑峰.分流集流阀在全液压平地机中的应用研究[D].西安:长安大学,2009.JIA Jianfeng.Application and Research of Dividing-combining Valve on the Full Hydraulic Grader[D].Xi'an:Chang'an University,2009.
[12]师辉宇.液压起道机起道作业双缸同步系统研究[D].长沙:中南大学,2010.SHI Huiyu.Research on Synchronization System of Doublecylinder on Hydraulic Rail Lifting Machine[D].Changsha:Central South University,2010.
[2]齐晓苗.巷道用临时支护设备电液控制系统研究[D].阜新:辽宁工程技术大学,2012.QI Xiaomiao.The Research on Electro-hydraulic Control System of Temporary Support Equipment Used in Roadway[D].Fuxin:Liaoning Technical University,2012.
[3]吴克瑞.炮掘巷道临时支护的开发研究[D].太原:太原理工大学,2011.WU Kerui.Exploitation Research on Temporary Support Equipment for Blasting Driving Tunnel in Mine[D].Taiyuan:Taiyuan University of Technology,2011.
[4]陈加胜,高明中.快速掘进配套临时支护液压支架设计[J].煤矿机械,2011,32(2):12-15.CHEN Jiasheng,GAO Mingzhong.Hydraulic Supports Design of Temporary Support for Quick Tunneling[J].Coal Mine Machinery,2011,32(2):12-15.
[5]郝长春.EBJ-120TP型掘进机机载临时支护装置的研究[J].煤矿机械,2010,31(6):121-122.HAO Changchun.Research of Temporary Support Device on EBJ-120TP Roadheader[J].Coal Mine Machinery,2010,31(6):121-122.
[6]金耀,夏毅敏,兰浩.几种可消除偏载影响的液压同步系统设计[J].机床与液压,2014,(11):107-110.JIN Yao,XIA Yimin,LAN Hao.Design of Hydraulic Synchronization Systems Eliminating Bias Load Effect[J].Machine Tool&Hydraulics,2014,(11):107-110.
[7]郭文孝.综掘面临时支护支架组液压控制系统的设计[J].煤炭工程,2015,(9):28-30.GUO Wenxiao.Design on Hydraulic Control System of Temporary Support Group in Fully Mechanized Excavation Face[J].Coal Engineering,2015,(9):28-30.
[8]郭文孝.交叉迈步式快速掘进临时支护支架组的研究[J].煤矿机械,2014,35(12):187-189.GUO Wenxiao.Research on Rapid Excavation and Temporary Support of Moving Cross-type Supportgroup[J].Coal Mine Machinery,2014,35(12):187-189.
[9]陈松林.负载敏感多路阀在远距离控制钻机上的应用[J].煤矿机械,2010,31(4):191-193.CHEN Songlin.Load-sensitivity Multi-way Value Used in Remote Control Drilling Machine[J].Coal Mine Machinery,2010,31(4):191-193.
[10]黄虎,陈光柱,蒋成林.全液压钻机负载敏感液压系统设计及仿真分析[J].液压与气动,2015,(3):71-74.http://journal.yeyanet.com/CN/abstract/abstract214.shtml.HUANG Hu,CHEN Guangzhu,JIANG Chenglin.The Design and Simulation of Load Sensing Hydraulic System in Fully Hydraulic Driver Drill[J].Chinaese Hydraulics&Pneumatics,2015,(3):71-74.http://journal.yeyanet.com/CN/abstract/abstract214.shtml.
[11]贾剑峰.分流集流阀在全液压平地机中的应用研究[D].西安:长安大学,2009.JIA Jianfeng.Application and Research of Dividing-combining Valve on the Full Hydraulic Grader[D].Xi'an:Chang'an University,2009.
[12]师辉宇.液压起道机起道作业双缸同步系统研究[D].长沙:中南大学,2010.SHI Huiyu.Research on Synchronization System of Doublecylinder on Hydraulic Rail Lifting Machine[D].Changsha:Central South University,2010.