充填采煤链式投料系统托盘疲劳分析  

Fatigue Analysis on Pallet of Chain Type Feeder System for Backfill Mining

作　　者：张国伟[1,2] 马占国[1,2] 耿敏敏[1,2] 龚鹏[1,2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《煤炭科学技术》2011年第12期84-87,55,共5页Coal Science and Technology

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-08-0837);国家重点基础研究发展计划(973计划)资助项目(2007CB209400);国家自然科学基金重点资助项目(50834005);国家自然科学基金资助项目(51074163);江苏省自然科学基金资助项目(BK2009092);国土资源部公益性资助项目(200811050)

摘　　要：针对托盘在充填采煤链式投料系统中的重要性,通过能量法得出冲击载荷计算公式,利用有限元程序对托盘在不同间距、不同下降速度下,受充填材料冲击后的疲劳损伤进行研究,预测了托盘的疲劳寿命。最后分析了托盘的危险部位,得到托盘受充填材料冲击的疲劳规律。研究结果表明:随着托盘间距增大,托盘疲劳损伤越大,托盘间距取5 m时其疲劳寿命符合煤矿开采年限;托盘下降的速度越大,其受到的疲劳损伤减少,考虑到托盘的强度、稳定性、运输效率,选取其速度为1.5～2.5 m/s较合适。According to the importance of the pallet in the chain type feeder system for the backfill mining,with the calculation formula of the impact load provided with the energy method,a finite element program was applied to study on the fatigue damage of the pallet after the impact of the backfill material under the different spaces and different dropping velocities and to predict the fatigue life of the pallet.Finally the dangerous part of the pallet was analyzed and the fatigue law of the pallet affected by the impact of the backfill material was obtained.The study results showed that with the space between the pallets increased,the fatigue damage of the pallet would be higher and when the space between pallets was 5 m,the fatigue life would meet the mining service life of the mine.The higher of the pallet dropping velocity,the fatigue damage of the pallets could be reduced.In consideration of the strength,stability and transportation efficiency of the pallet,the dropping velocity of 1.5~2.5 m/s would be suitable.

关 键 词：充填采煤链式投料系统 ANSYS 疲劳分析 冲击载荷 

分 类 号：TD67[矿业工程—矿山机电]