,,273513。TH227B、、、、。、、。、。。2006。2010。1。。、。22.140T40T。。40T。。2.240T40T11222.332011310214000-6000Nm20.4m/s325~40rpm16000Nm515MPa210~30r/min666l/min33462ml/r7INM1-150D31413MPa8C34(i=38.5)52··3。。33.15305②2444m98~188m7.72~8.80m481.2t409.02t85%。13.2m2、4.4m、3.0m。SSJ1200/3×31543.220091220201010315305②2050m390t。。3.31。2。3.411.5。2。31~2。4“”。4、。。。[1]..[2].200308225.[3].[D],2007.[4].[D],2007.[5].[D],2006.[6].[D],2002[7].[D],2005.[8].[J](),2004,(01)19849。2011-1-820113102116MPa418.5kW660V/1140V266L/min5250L36N461SSJ1200/3×31551800t/h23×315kW61200mm31140V773.55m/s41925mm81840mmImprovementofBeltRamHeadCoalClearanceDeviceatComprehensiveMiningTopCoalCavingFaceLiuShenpeng,LiuZifang,LiuQuan,YuTaoAbstract:Reformandrenovationforbeltramheadcoalclearancedeviceatcomprehensiveminingtopcoalcavingfaceisdescribed,tobetterservethecoalmine.Keywords:ramheadimprovement53··