1000 kW交流传动重型轨道车研制

分别从主要技术参数、总体布置、部件选型以及整车性能等方面介绍了国内首台1 000 kW交流传动重型轨道车的研制,在牵引性能、经济性、可靠性、可适用性、可维护性等方面进行了优化和提高,该型重型轨道车满足设计和使用要求。     

重型四轮驱动轨道牵引车车体有限元分析

对重型四轮驱动牵引轨道车的结构和技术参数进行了介绍,参考TB/T1335-1996等标准,采用ANSYS软件搭建车体有限元模型,确定载荷及工况,对车体结构进行了静强度分析.分析结果表明车体的静强度满足相关技术条件的要求,计算结果可为以后的轨道牵引车的设计提供参考.     

重型轨道车车轮异常磨耗原因分析及应对措施

重型轨道车由于自重较大,在使用过程中很容易发生车轮的异常磨损情况,严重影响轨道车的工作效率。本文主要通过对影响重型轨道车异常磨耗的主要因素进行分析,有针对性地提出了相关的应对措施,希望能够减少重型轨道车车轮异常磨耗的情况,确保重型轨道车的正常工作,减少经济的损失和维护的成本,希望能为重型轨道车车轮异常磨耗工作提供一定的参考。     

城市轨道交通轨道车新型转向架研制与仿真分析

本文介绍了金鹰重型工程机械有限公司研制的GCD300型重型轨道车转向架的技术参数、整体结构,阐述了各部件结构设计特点,对转向架构架采用ANSYS软件进行了有限元强度计算以及采用德国航空航天中心开发的SIMPACK动力学仿真软件进动力学性能计算,各项计算均符合标准要求。     

GCD-450重型轨道车可靠性提升研究

对提升GCD-450重型轨道车可靠性的方法进行了研究。在GCD-450重型轨道车上加装电阻制动装置,解决了轨道车在长大坡道上的下坡制动问题,能够维持轨道车以较高速度持续下坡,大大降低了闸瓦和车轮的磨损,最小限度地使用空气制动,使闸瓦和车轮的发热减小,确保牵引车辆有足够的缓解充风时间,提高了使用空气制动时的制动效果,提升了轨道车的制动性能和行车安全性。     

一种新型重型轨道车的设计

介绍了新型重型轨道车的整车结构及主要部件,详细说明了新型轨道车的一些技术特点。     

GCY-307重型轨道车制动装置结构优化

针对GCY-307重型轨道车制动距离较长、闸瓦易磨损的问题,分析了现有单侧制动装置的结构原理及缺陷,通过计算分析,提出了双侧闸瓦制动的改进方案,实践证明采用双侧闸瓦制动增大了轨道车制动力,缩短了制动距离并减小了闸瓦磨损,提高了机车运行安全性。     

基于无速度传感器控制的压铸轨道车系统仿真

针对压力铸钢生产线中轨道车速度检测问题,研究了无速度传感器矢量控制系统。将异步电机作为牵引电机,并基于MATLAB/Simulink对无速度传感器矢量控制调速系统进行了建模与仿真。仿真结果表明推算速度能够代替检测速度,完成对轨道车的启动、调速及制动阶段的速度检测,轨道车具有良好的跟随性,能够保证压铸生产线的生产效率。     

浅谈轨道车运行控制设备安全运用管理

轨道车和GYK是重要的机器设备。轨道车和GYK的特点不规律且相对分散。在操作过程中,有必要按照技术标准加强操作控制管理,并通过科学方法进行充分控制,以确保设备的质量和整体性能。对轨道车和GYK控制单元的安全使用情况和相关技术方法进行分析,可以为轨道车和GYK的稳定运行提供有效的技术支持和衡量标准。本文主要分析了轨道车和GYK操作控制装置固有的潜在安全隐患,研究了有关轨道车和GYK停电和放气的相关方法,并以轨道和GYK车控件的紧急情况应对方法作为参考。     

重型轨道车、接触网作业车LIPE离合器故障原因分析及检修注意事项探讨

主要对重型轨道车、接触网作业车所使用的LIPE离合器的结构组成、常见故障及原因进行了分析,列举了该离合器在检修过程中的几点注意事项。     

一种新型短壁开采设备--TY9FB型梭车

TY9FB型梭车是一种新型的连续采煤机后配套设备。详细介绍了TY9FB梭车的主要技术参数、总体结构特点、传动和制动系统、液压系统和电气系统。与国外同类产品进行了比较,并分析了该研究项目的创新点和先进技术。     

以势能驱动的涡卷弹簧储能小车研究

设计了一种以重力势能驱动的具有方向控制功能的涡卷弹簧储能自行小车。该自行小车在前行过程中能自动避开赛道上设置的障碍物,无须采用其他形式的动力源。从概念设计、详细设计等方面完成了小车的设计,该小车由转向系统、储能系统和传动系统等子系统组成,其中储能系统用以储存重物的部分势能而后再进行能量的释放,使得小车运行距离更远。该小车的设计为无碳小车的研究提供了指导意义。     

几何成像法在船-桥撞击测试中的应用

通过设计小车的尺寸、形状、撞击速度等撞击参数后,在不同情况下分别进行小车撞击桥墩的模型实验。采用摄像机记录船舶在撞击过程中空间位置的变化,运用MatLab软件对实验采集到的船舶运动图像进行数据分析处理,确定小车在整个撞击过程中的运动轨迹。同时在分别改变模型小车的质量、速度、重心位置、撞击角度后,对桥墩刚度进行实验,获取不同参数下的小车运行轨迹,并对各参数下的实验结果进行比较、分析,利用图像处理技术建立了确定物体运动轨迹系统的方法。     

HHT在车辆-轨道系统垂向振动时频分析中的应用

应用希尔伯特黄变换方法(Hilbert-Huang transform,简称HHT)对车辆-轨道系统中高低不平顺与车辆垂向振动加速度关系进行分析。首先,利用经验模态分解法(empirical mode decomposition,简称EMD）对实测的高低不平顺与车辆垂向振动加速度信号进行分解,得到两者的本征模函数;然后,通过比较分析两者本征模函数的时域波形与Hilbert能量谱,说明高低不平顺本征模函数与车辆垂向振动加速度本征模函数之间的确定性的对应关系,可以利用车辆垂向振动加速度来识别轨道高低不平顺的不良区段;最后,对京广提速干线铁路轨检车实测样本进行回归分析,得到在波长为1.5～50m范围内直线和曲线段高低不平顺与车辆垂向振动加速度的定量关系。     

Urban rail track condition monitoring based on in-service vehicle acceleration measurements

Condition monitoring of railway tracks is essential in ensuring the safety of railway systems. Traditional track recording vehicles (TRV) can only carry out the track inspection in the midnight after all the service vehicles are off duty. One track line can be inspected only once or less in a month. The severe track condition degradation cannot be detected timely and there is potential safety hazard for the railway system. Therefore, the track condition monitoring based on in-service vehicle has been paid more attention in the recent years. In this paper, the track condition monitoring based on the bogie and car body acceleration measurements is presented. The track alignment information which can be derived from the bogie and car body sensor is investigated by using a mathematical model and the frequency response analysis. The track irregularities can be estimated by using the bogie and the car body acceleration sensors. The acceleration signals are preprocessing with a DC filter and a low pass filter. After that, the track alignments are obtained by double integrating the signals. Field tests are carried out in Shang Hai metro Line 1 for demonstrating the effectiveness of the proposed track inspection system.     

Effect of passenger car curving on rail corrugation at a curved track

The paper presents a corrugation calculation model, which considers Kalker's non-Hertzian rolling contact theory to be modified, a material wear model and a vertical and lateral coupling dynamics of a half passenger car and a curved track. The dynamics characters of the curved track model in frequency domain were investigated by the commercial finite element code ANSYS, and some results concerning rail corrugation are presented in this paper. During a passenger car passing a curved track the dynamical performance of the vehicle and track and the initiation and growth of the curved rail corrugation are analyzed with the present corrugation calculation model. In the numerical calculation, two track states are investigated. One is that the track does not have any congenital defect except for the discrete rail support by sleepers. The other is that the track has a lateral dent on the gauge corner of the high rail. The rail corrugations analyzed are attributed to the material wear mechanism. The numerical results obtained indicate that (1) a high passing frequency corrugation initiates on the smooth running surface of the curved rail during the first passing of the passenger car through the curved track without defects; (2) the initial corrugation develops quickly and its passing frequencies change with an increase of passenger car passage; (3) the interaction of the leading wheelset of the bogie and the curved rails causes more severe corrugation and wear on the rail running surface than that of the trailing wheelset of the same bogie; (4) discrete rail support by sleepers is the congenital defect leading to rail corrugation formation.     

Estimation of ambient temperature impact on vertical dynamic behaviour of passenger rail vehicle with damaged wheels

Maintenance and repair specialists of rolling stock face the problem related to accurate and reliable assessment of the vibrations of the car body of passenger rail vehicle, caused by wheel damage, and its impact on passengers. Another important aspect is to deter-mine the permissible speed at which the passenger car with wheel damage could move to the nearest station or depot without badly damaging the rails. The purpose of this research is to examine the dynamic processes of the interaction of the passenger car chassis with the railway track using a newly developed mathematical models called the “Passenger Car - Track” system. During the simulation, the dynamic characteristics of the track, bogies and car body in different season temperature were estimated. The validation of theoretical results was obtained based on the field tests of the test train as well as the results of measurements of changes in track stiffness temperatures. Finally, conclusions and suggestions are presented.     

步履式全地形六足机器人

为解决机器人复杂崎岖地形难以行进的问题,设计了步履式全地形六足机器人。系统以STM32F407ZGT6单片机为控制核心,通过EPM1270T144I5舵机和直流减速电机驱动板,控制DS3120MG型舵机带动机器人的运动关节以及控制5GA370型直流减速电机驱动履带小车;同时引入H083-0605TC型导电滑环与挂胶履带,实现履带小车360°回转无死角,进而可以在各种复杂地形下灵活运动。步履式全地形六足机器人具有优越的越野能力,可轻易翻越障碍物,且抗干扰能力强,灵活度高,安全可靠,具有较高的实用价值。     

大轴重铁路货车轴承选型与设计

根据重载货运需求,借鉴既有铁路货车轴承成功使用的经验,进行了重载铁路货车轴承选型、设计及维护的研究,通过优化设计、仿真分析及综合试验等手段,实现了重载铁路货车轴承的合理设计,满足了重载铁路货车的使用要求。     

基于MC9S12XSl28的直立轮式智能小车设计

智能车作为人们未来的出行工具,对其研究具有科学性和前沿性意义。本文介绍了一种双轮式直立小车系统,系统以MC9S12XSl28作为控制核心,利用光电和倾角传感器进行数据采集,控制系统对数据进行分析处理并结合PID控制算法的整定试验,获得了一款能进行直立控制、智能循迹等功能的小车：试验表明,小车功能齐全,运行可靠,可用于各类机器人比赛和高校相关专业教学实验。