摘要
针对放顶煤掩体支架在工作过程中出现的可靠性差、抗随机冲击载荷能力弱等问题,设计了一种脚踏式液压驱动、同步对称的掩体支架结构,利用3阶累积量谱随冲击信号变化敏感的特性对所设计的支架进行抗随机冲击载荷性能测试,测试结果为掩体支架的二次改进优化提供技术性参照。
In view of reliability instability and weak anti random impact load for bunker bracket of top coal caving,a new one gets complete,which uses hydraulic drive and has symmetric structure,then the performance test of anti random impact load is carried out basing on three order accumulating spectrum,it has sensitive characteristic for random impact signal. The test results provide technical references for two improvement optimization configuration.
出处
《煤矿机械》
2015年第12期98-99,共2页
Coal Mine Machinery
基金
浙江省自然科学基金资助项目(LQ12E05011)
浙江省科技攻关计划项目(20124D0034)
关键词
掩体支架
可靠性
随机冲击载荷
3阶累积量谱
改进优化
bunker bracket
reliability
random impact load
three order accumulating
improvement optimization
