滚筒采煤机液压拉杆受力分析  

Tension analysis of the drum shearer hydraulic pull rod

作　　者：陈洪月[1] 李永红[1] 邓文浩[2] 袁智 李恩东[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000 [2]宾夕法尼亚大学工程与应用科学学院,宾夕法尼亚19104 [3]中国煤矿机械装备有限责任公司,北京100011

出　　处：《工程设计学报》2018年第1期118-122,共5页Chinese Journal of Engineering Design

基　　金：国家自然科学基金青年科学基金资助项目(51404132)

摘　　要：为了研究采煤机滚筒截割载荷对其机身上4根液压拉杆负载的影响,采用小位移变形协调原理和静力学平衡方程,建立了采煤机工况载荷下4根液压拉杆的受力模型,推导了拉杆的载荷公式,设定4根拉杆的初始预紧力均为500kN,以滚筒和滑靴的实验测试载荷为输入,对拉杆受力模型进行了求解。结果表明:4根拉杆的变形量均值分别为3.164 2,1.934 8,2.353 8,2.248 8mm;采煤机工作过程中4根拉杆载荷相差较大,其中煤壁区上侧拉杆的载荷最大,均值为536 578N,采空区上侧拉杆的载荷最小,均值为449 991N。最后通过实验对拉杆受力模型的准确性进行了验证,研究结果为采煤机液压拉杆的预紧力设定及寿命分析提供依据。To study the effect of the shearer drum cutting load to the four hydraulic pull rods,the force model of the four hydraulic pull rods was established under the shearer working load by using the small displacement deformation coordination principal and the statics equilibrium equation,and the load formula was derived.Assuming the pre-tension load of four pull rods was500 kN,the force model of the pull rod was solved by input the test loading of the drum and the sliding shoes.The test results showed that the deformation average of four pull rods were3.164 2,1.934 8,2.353 8,2.248 8 mm respectively.The loads of the four pull rods were different in the working process of the shearer,where the largest load of pull rods was on the upper coal wall,the average value was 536 578 N,the lowest load of pull rods was on the goaf,and the average value was 449 991 N.The accuracy of the pull rod force model was verified by the test.The research results provide the convenience to the setting of the pre-tension force of the shearer hydraulic pull rod and the lifetime analysis.

关 键 词：采煤机 液压拉杆 预紧力 变形协调原理 

分 类 号：TD421.61[矿业工程—矿山机电]