两柱掩护式电液放顶煤液压支架设计  

Two Columns Cover Design of Electro Hydraulic Caving Coal Hydraulic Support Type

作　　者：王建国[1] 

机构地区：[1]天地科技股份有限公司开采装备技术研究所,北京100013

出　　处：《煤矿机械》2015年第5期5-7,共3页Coal Mine Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA06A407)

摘　　要：针对四柱放顶煤支架在开采过程中出现拔后柱、支护效率低等情况,研究设计两柱掩护式电液放顶煤液压支架。通过优化支架四连杆机构,改善支架整体受力状况,提高支架支护效率;优化顶梁立柱支撑位置,扩展支架合力作用点的分布范围,防止支架放煤前后的"高射炮"和低头;同时支架采用整体顶梁,提高支架前端支顶力,防止片帮、冒顶,更好维护顶板。According to the column, four column hydraulic caving supports pull support appears in the mining process after the low efficiency, research and design of two leg shield electric hydraulic caving hydraulic support. Through the optimization of four bar linkage mechanism improves the support bracket, the overall stress condition, improve the supporting efficiency; optimization of top beam column support position, distribution range extends support action point of resultant force, prevent the support caving coal before and after the ＂flak＂ and bow; at the same time the bracket adopts whole top beam, raise the front end of the bracket supporting jacking force, prevent tablets help, better maintenance of roof fall, roof.

关 键 词：两柱放顶煤液压支架 电液控制 四连杆机构 支护效率 

分 类 号：TD355[矿业工程—矿井建设]