摘要
为研究采煤机行走机构力学特性,从行走轮齿面磨损和剥落角度分析行走轮与销排啮合刚度变化,进而研究齿面磨损及剥落影响下行走轮与销排啮合力变化规律。采用势能法建立行走轮与销排啮合刚度数学模型,计算得到齿面无磨损、齿面磨损及剥落3种工况下的行走轮与销排啮合刚度,并通过仿真分析啮合刚度对齿销啮合力的影响。研究结果表明:齿面无磨损下齿销啮合力均值约为187 kN;啮合力均值和幅值随着齿面磨损量的增加而增大,齿面最大磨损量为1.5 mm时,齿销啮合力的均值较无磨损时增大约4.2%;随着齿面剥落面积增加,齿销啮合力均值增大;齿面最大磨损量为1.5 mm时,考虑啮合刚度的影响,齿销啮合力均值相较于仅考虑磨损影响时增大约2.1%。通过研究齿面磨损对齿销啮合力的影响规律,为研究采煤机行走机构力学特性提供基础。
In order to study the mechanical characteristics of shearer walking mechanism,from the angle of tooth surface wear and spalling,the changes of meshing stiffness of walking wheel and pin row was analyzed,and then the change law of meshing force of walking wheel and pin row under the influence of tooth surface wear and spalling was studied.The mathematical model of the meshing stiffness of the walking wheel and pin row was established by the potential energy method,the meshing stiffness of the walking wheel and pin row was calculated under the three working conditions of no wear,wear and spalling of the tooth surface,and analyzed the influence of meshing stiffness on the tooth pin meshing force through simulation.The results show that the average meshing force of the tooth pin without wear is about 187 kN.The mean value and amplitude of meshing force increase with the increase of tooth surface wear.When the maximum tooth surface wear is 1.5 mm,the mean value of meshing force increases about 4.2%compared with that without wear.With the increase of spalling area of tooth surface,the average meshing force of tooth pin increases.When the maximum wear of the tooth surface is 1.5 mm,considering the influence of meshing stiffness the average meshing force of the tooth pin increases by about 2.1%compared with that when the wear effect is considered only.By studying the influence law of tooth surface wear on tooth pin meshing force,it provides a basis for studying the mechanical characteristics of shearer walking mechanism.
作者
张丹
杨广旭
徐鹏
毛汉成
Zhang Dan;Yang Guangxu;Xu Peng;Mao Hancheng(School of Mechanical Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China)
出处
《煤矿机械》
2025年第9期84-91,共8页
Coal Mine Machinery
基金
黑龙江省“揭榜挂帅”科技攻关项目(2021ZXJ02A01)
黑龙江省自然科学基金项目(LH2022E106)
黑龙江省基本科研业务费项目(2024-KYYWF-1094)。
关键词
采煤机行走轮
齿面磨损
齿面剥落
啮合刚度
力学特性
shearer walking wheel
tooth surface wear
tooth surface spalling
mesh stiffness
mechanical property
