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机车工程

机车工程的相关文献在1994年到2019年内共计201篇,主要集中在铁路运输、能源与动力工程、自动化技术、计算机技术 等领域,其中期刊论文152篇、会议论文49篇、专利文献267750篇;相关期刊27种,包括重庆交通大学学报(自然科学版)、国外机车车辆工艺、交通运输工程学报等; 相关会议23种,包括2015年智慧城市与轨道交通学术会议暨智慧城市轨道交通学组年会、中国铁道学会重载铁路建设养护与装备安全研讨会、第十二届沈阳科学学术会议等;机车工程的相关文献由378位作者贡献,包括刘建新、马卫华、叶大志等。

机车工程—发文量

期刊论文>

论文:152 占比:0.06%

会议论文>

论文:49 占比:0.02%

专利文献>

论文:267750 占比:99.92%

总计:267951篇

机车工程—发文趋势图

机车工程

-研究学者

  • 刘建新
  • 马卫华
  • 叶大志
  • 张红军
  • 李芾
  • 杨俊杰
  • 沈永秋
  • 罗世辉
  • 罗赟
  • LI Xing-ren
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 唐飞; 马帅; 李耀; 徐笑寒
    • 摘要: 针对悬挂式单轨车辆通过曲线时侧滚较大的问题,从车辆设计、系统动力学参数优化的角度出发探索控制车辆侧滚的方法.首先对悬挂式单轨车辆结构进行分析,在此基础之上建立悬挂式单轨车辆拓扑构型关系和动力学仿真模型;然后对车辆系统动力学参数进行灵敏度分析,筛选出对车辆侧滚影响显著的参数;最后以影响显著的系统动力学参数作为优化设计变量,以车辆运行稳定性、曲线通过性和平稳性作为优化约束条件,采用NSGA-II遗传算法作为优化算法,运用ADAMS与mode FRONTIER联合对悬挂式单轨车辆侧滚进行优化分析.优化结果表明:在满足给定约束条件下,当空气弹簧刚度、走行轮胎垂向刚度、水平轮径向刚度达到最优解时,悬挂式单轨车辆的侧滚角降低了15.90%~17.11%,悬挂式单轨车辆的侧滚得到了有效控制.
    • 张立刚; 罗赟
    • 摘要: 为了设置HXD1C型机车在不同曲线半径下的合理的中间车轴轴箱轴承横向自由间隙(即中轴自由横动量),采用多体动力学软件SIMPACK建立了机车动力学模型,比较了中轴自由横动量对机车非线性稳定性、直线运行横向性能、曲线通过性能和曲线外轮磨耗功的影响.研究表明:机车运行线路半径以R300~R400 m曲线为主时,建议中轴自由横动量在14~16 mm选取;机车运行线路半径以R600~R800 m曲线为主时,建议中轴自由横动量取10 mm.
    • 王燕; 刘建新; 李奕璠; 虞大联; 谢鸣
    • 摘要: 针对机车齿轮传动系统的参数振动问题,建立了考虑齿面摩擦时机车齿轮传动系统的动力学模型,基于势能原理获得了齿轮时变啮合刚度,并利用傅里叶级数展开,利用多尺度法进行求解,获得了系统参数振动稳定的边界条件.最后开展实例分析,研究了齿面摩擦因数对机车齿轮传动系统参数振动稳定性的影响.分析结果表明:不计齿面摩擦时,当机车速度约为119.02/j km·h-1(j是谐波项)时,系统会产生参数共振,摩擦因数越大,对应的参数共振速度越大;在参数共振速度附近存在系统振动不稳定区域,当系统阻尼系数和摩擦因数均为0,谐波项分别为1、2、3、4时,相对于参数共振速度的波动值分别为9.16、1.46、0.53、0.55 km·h-1,系统振动不稳定;当阻尼系数为0时,在对应谐波项下,与摩擦因数为0时相比,齿面摩擦因数分别为0.1、0.2时,系统振动不稳定区域内相对于参数共振速度的波动值分别增加了约4.88%、9.54%;当阻尼系数为0.01时,随着摩擦因数的增大,在系统振动不稳定区域内相对于参数共振速度的波动值不一定增加;摩擦因数越大,系统稳定所需的阻尼系数越小.%Aiming at solving the problem of parametric vibration of locomotive gear transmission system, the dynamic model of gear transmission system was established considering tooth surface friction.In the model, the time-varying mesh stiffness was obtained based on the potential energy method, fitted by using the technique of Fourier series, and solved by using the method of multiple scales to gain the boundary condition of parametric stable vibration.Finally, a case study was carried out for studying the influence of tooth surface friction on the parametric vibration stability.Analysis result indicates that when the resonance speed is about 119.02/j km·h-1 (j is harmonic term), the prametric vibration will happen under the condition that friction coefficint is 0.The greater the friction coefficient is, the bigger the resonance speed at corresponding harmonic term is.Meanwhile, there exist an unstable vibration region in the vicinity of resonance speed.Under the condition that the damping coefficient and the friction coefficient are 0, when the harmonic terms are 1, 2, 3, 4, respectively, the corresponding fluctuation ranges relative to resonance speeds are about 9.16, 1.46, 0.53, 0.55 km·h-1, respectively, so the system is unstable.Under the condition that the damping coefficient is 0, when the friction coefficients are 0.1 and 0.2, respectively, compared to the result that the friction coefficient is 0, the fluctuation ranges relative to resonance speeds increase by about 4.88%, 9.54%, respectively, with the corresponding harmonic term in unstable vibration regions.But when the damping coefficient is 0.01 and the system is unstable, with the increase of friction coefficient, the fluctuation range relative to resonance speeds does not necessarily increase.Furthermore, the larger the friction coefficient is, the smaller the damping coefficient required by the stability of system is.5 tabs, 13 figs, 30 refs.
    • 杨阳; 丁军君; 李芾; 李东宇; 李金城
    • 摘要: 以某正在运行的C0-C0轴式电力机车为研究对象,考虑了机车传动系统的影响,基于Archard 磨耗模型,建立了电力机车的车轮磨耗计算模型,研究了恒速与起动工况下车轮的磨耗,根据某实际线路计算车轮磨耗,并与实测数据进行对比,研究了机车正常运行过程中出现的轮缘非正常磨耗.分析结果表明:当车辆恒速运行2.6 × 105 km,牵引力由40 kN增大到120 kN和由120 kN增大到200 kN时,磨耗分别增加了0.74、1.74 mm,因此,随着牵引力增大磨耗急剧增加;机车起动过程中增加牵引力可以获得更大的加速度,随着牵引力增大,蠕滑率明显增大,因此,增加牵引力可节约运行时间,但同时会产生更大磨耗;通过与车轮磨耗实测数据对比,车轮磨耗计算模型较为准确,在踏面处仿真计算结果与实测结果具有很好的一致性;由于车轮磨耗计算模型未考虑材料的塑性流动与道岔的影响,在轮缘处的仿真结果与实测结果有一定的差异;降低二位轮对横动量和轨侧润滑能够大幅降低车轮磨耗,当二位轮对横动量由15 mm降低为10 mm时,二位轮对累积磨耗降低了15.4%;轨侧润滑后一~三位轮对最大累积磨耗分别降低了13.40%、21.32%、6.46%.%Taking a running C0-C0 shaft type electric locomotive as research object,the wheel wear calculation model of electric locomotive was established based on the Archard wear model,and the influence of locomotive drive system was considered in the model.The wheel wears under constant speed and starting conditions were studied.The wheel wear was calculated according to a actual line,and was compared with the measured data.The abnormal wear of wheel flange during the normal operation of locomotive was studied.Analysis result shows that when the vehicle runs 2.6 × 105 km at a constant speed,and the traction forces increase from 40 kN to 120 kN and 120 kN to 200 kN,the wears increase by 0.74 mm and 1.74 mm respectively,so the wear increases rapidly with the increase of traction force.Increasing the traction force during locomotive starting process can obtain greater acceleration.With the increase of traction force,the creep rate increases obviously.Increasing the traction force can save running time,but wear increases at the same time.Compared with the measured data of wheel wear,the wheel wear calculation model is comparatively accurate,and the simulation result at the tread surface is in good consistency with the measured result.Because the plastic flow of materials and the influence of railway switch are not considered in the wheel wear calculation model,the simulation result of wheel rim has difference with the measured result.The wheel wear greatly reduces when reducing the transverse momentum of second wheelset and rail-side lubrication.When the transverse momentum of second wheelset reduces from 15 mm to 10 mm,the cumulative wear of middle wheelset reduces by 15.4%.After rail-side lubrication,the maximum cumulative wears of the first wheelset,the second wheelset and the third wheelset decrease by 13.40%,21.32%,6.46%,separately.14 figs,26 refs.
    • 曹世豪; 李煦; 文良华; 江晓禹
    • 摘要: 通过分析ANSYS求解断裂参数K因子的原理位移外推法,并比较ANSYS仿真计算与断裂力学的解析解结果,表明ANSYS计算K因子的精确度可以达到99.9%.对钢轨表面存在裂纹的轮轨接触疲劳问题进行研究,在不同裂纹角度下,获得不同位置的裂纹尖端应力强度因子.结果表明:随着裂纹角度的增加,应力强度因子K1增加而KⅡ减小;在裂纹角度比较小时,裂纹以滑开型破坏为主,随着裂纹角度的增加,其破坏形式向张开型破坏转变;疲劳裂纹最危险的位置发生在接触斑边缘位置,在钢轨养护时,应选用固体润滑剂.
    • 王燕; 刘建新
    • 摘要: 针对负载波动激扰的机车牵引齿轮振动问题,建立了机车牵引齿轮的动力学方程,利用平均法得到了齿轮振动频率与振幅,分析了振幅变化趋势与参数变化对齿轮振动稳定后振幅的影响规律,并进行了仿真试验.分析结果表明:负载力矩是振动速度的函数;振动频率为一个定值,当蠕滑速度分别为0.8、0.2 m· s-1时,齿轮的振动频率均为335.0 Hz,非常接近理论值334.8 Hz;根据不同的情况,振幅逐渐减小至0或逐渐增大至一个稳定的值;当蠕滑速度为0.8m·s-1时,齿轮振动稳定后的振幅随着齿轮啮合刚度和啮合阻尼的增大而减小,随着小齿轮上的等效转动惯量和机车轴重的增大而增大,因此,增大齿轮啮合刚度和啮合阻尼、减小小齿轮上的等效转动惯量和机车轴重有助于降低齿轮的振幅.
    • 小城
    • 摘要: 近日,日立铁路系统公司(HitachiRailSystems)选择PTC全球产品开发解决方案作为其全球产品开发(涵盖铁路机车工程及制造业务)唯一的企业级平台,
    • 马卫华; 曲天威; 罗世辉; 宋荣荣
    • 摘要: 建立了2C0轴式机车动力学模型,分析了轮对轴箱定位偏差,仿真了各轮对轴箱定位偏差对同一转向架各轮对横向位移与偏转方向的影响.仿真结果表明:第1轮对轴箱定位偏差对第1轮对横移量有较大的影响,中间轮对与第3轮对轴箱定位偏差对中间轮对横移量有较大的影响,2.4 mm的轴箱定位偏差最大可引起6.0 mm的轮对横移量.当任意2个轮对同时存在定位偏差时,相比同相位偏差,反相定位偏差影响更大,更容易产生轮缘偏磨现象,1.6 mm的组合偏差可导致最大6.5 mm的轮对横移量.通过控制轴箱定位偏差的大小,可以有效改善轮缘偏磨现象.%The dynamics model of 2C0 locomotive was set up, wheelset axle-box positioning deviations were analyzed, and the influence of each wheelset axle-box positioning deviation on wheelset lateral displacement and wheelset deflection direction for the same bogie was simulated. Simulation result shows that the axle-box positioning deviation of the first wheelset has greater influence on its lateral displacement, the middle and third wheelset have greater influence on the lateral displacement of the middle wheelset, and the lateral displacement can reach 6. 0 mm when the positioning deviation is 2. 4 mm. When the deviations exist in any two wheelsets at the same time, the anti-phase positioning deviation has greater influence and more easily results in the partial wear of wheel flange than the same phase positioning deviation, and the lateral displacement can reach 6. 5 mm when the combined axle-box positioning deviation is 1. 6 mm. The partial wear can be effectively improved by adjusting the positioning deviation. 2 tabs, 8 figs, 15 refs.
    • 毕鑫; 马卫华; 王少林; 罗世辉
    • 摘要: 研究了三轴机车径向导向机构工作原理,采用数值仿真的方法分析了机车径向转向架和常规转向架通过缓和曲线时轮轨接触特性.研究结果表明:径向机构能够均衡前后轮对的导向力矩,改善机车一系悬挂的受力,有利于转向架构架向曲线径向方向摇头;常规转向架导向轮对易发生轮缘贴靠,产生较大冲角,而径向转向架轮对能够在较大半径下维持较小的冲角,导向轮对发生轮缘贴靠以后会削弱径向转向架的导向性能;两种转向架轮对的蠕滑力分布规律一致,导向轮对横向蠕滑力大于纵向蠕滑力,第3轮对纵向蠕滑力大于横向蠕滑力;横向蠕滑力的变化过程表现出强的非线性规律,较小的冲角就会产生较大的横向蠕滑力.
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