隧道光导照明技术试验研究

光导照明技术应用于隧道照明目前是国际研究前沿。对长江路隧道应用光导照明技术可行性进行现场实验研究。实验分3个阶段,对不同天气情况下,不同时段的室内外路面照度值、地面总均匀度、车道纵向均匀度和室内外照度比值等进行了大量的跟踪测试,并对两家厂家产品的性能作了对比,最终证明了长江路光导照明系统设计方案和光导照明技术应用于隧道照明的可行性。     

关于非道路宽体自卸车“来油慢”相关问题分析及解决方案

随着《GB 20891-2014 非道路移动机械用柴油机排气污染物排放限值及测量方法(中国第三、四阶段)》的推出,原有大泵发动机逐渐被高压共轨发动机淘汰。在切换过程中,司机们纷纷表示高压共轨发动机没有大泵发动机有劲,然而通过比较各发动机公司提供的发动机性能数据单发现,高压共轨发动机的输出扭矩较大泵发动机的输出扭矩更大。通过进一步调研发现,司机反馈的现象为"起步没劲"、"起步来油慢",本文将以搭载潍柴发动机WP12G460E310发动机的徐工非道路宽体自卸车为试验及分析对象,全面解析"来油慢"问题并提出解决方案。通过实验对比发现,加大排气管直径并取消消音器可解决"来油慢"问题,且效果明显。     

汽车增光器的使用与故障诊断

汽车灯光用于为汽车行驶提供照明以及将其行驶状况向交通过程的其它参加者发出信号。汽车增光器是为适应车辆行驶状况而产生的一种提高汽车前照灯亮度的电子产品，本文从实践经验出发，分析其工作原理，介绍其安装方法和检修步骤。     

轻便触探锤击数N10与静力触探锥端阻力Qc的关系

根据公路桥、涵台背回填中粗砂密实度检测的室内模型试验，探讨了轻便触探试验数据与静力触探试验数据之间的关系，并建立了轻便触探锤击数N10与静力触探锥端阻力Qc之间的相关关系式，验证表明轻便触探与静力触探具有较好的相关性。     

Development and validation of a numerical model for predicting forklift truck tip-over

The aim of this paper is to present the dynamic behaviour modelling performed for a forklift truck and the validation of this model. The intention is to develop a permanent tool allowing both common and critical driving situations (especially that of lateral tip-over) to be simulated for this type of vehicle. The medium-term aim is to use this model as a tool to facilitate designing, training and preparing safety standards with a view to reducing the number of accidents related to this machine, which, on average, still cause nearly 10 deaths each year. This paper describes the forklift truck mechanical model and the tyre model. A Pacejka's lateral tyre model was used and integrated into the forklift truck model. The interacting forces and moments between the wheels and the ground are, therefore, computed at all times. Test bench-measured data, characteristic of the dynamic behaviour of several tyres, were used to identify the parameters of the Pacejka model. We studied the limits of this model adapted in this case to tyres with characteristics different from those of the car sector. Track testing was performed using a safe-test forklift truck. The purpose of these tests was to measure trajectory characteristics (velocity, position, acceleration and slip angle) and to compare them with model-based predictions, allowing validation of the robustness and accuracy of this model. Situations involving partial (up to 15°) tip-over were included. The quantities measured during testing were compared with the calculation results obtained for identical driving configurations. There was a close calculation/measurement correlation when performing a wide ‘J-turn’ (with and without tip-over) when following circular or slalom trajectories. The calculation/measurement correlation was less close when the forklift truck performed a sharp ‘J-turn’, for example. Model limits can be derived from the observations, data processing and calculations.     

直推自卸式垃圾车举升支座的优化设计

通常在设计直推自卸式垃圾车时,举升支座结构为安全起见均较为厚重,在结构布置上所占体积大且自重大。为此,应用ADAMS仿真分析软件建立举升机构的虚拟样机,对其添加约束、载荷、驱动,进行动力学仿真分析,得到举升支座的动力学仿真结果。再利用ANSYS有限元分析软件对其进行划分网格,定义受力条件,进行有限元分析,得出其应力应变与位移云图,并根据有限元分析结果对其进行优化设计。结果表明,优化后的举升支座强度满足要求,体积减小,成本得到降低。     

T式举升机构的设计和计算软件开发

介绍了T式举升机构的设计方法，通过对机构的分析，建立了举升机构的数学模型，在总结多年实践经验的基础上，运用计算机语言开发了一套专门用于T式自卸举升机构设计计算的辅助软件。本软件能快速计算出自卸举升机构各铰点在不同的举升角度下的坐标、受力大小及方向，并可运用EXCEL电子表格生成各点受力曲线和举升机构的总体参数。     

空气弹簧对重卡平顺性影响研究

为使重卡在平顺性方面满足国际或国家法规要求,利用专用软件,在建立有限元模型的基础上,通过计算机线性静态模拟计算分析,建立重卡有限元模型,进行动态模拟分析和数据分析,从重卡的平顺性出发,通过对安装空气弹簧重卡平顺性实验,然后建立重型卡车ADMAS/Car虚拟样机模型,针对空气弹簧在重卡上的平顺性能影响进行仿真和试验对比分析,并提出改进建议以达到设计目标。     

厢式载货汽车模型风洞试验技术的研究

风洞试验是进行汽车空气动力学研究的重要手段，介绍了试验数据系统，论述了用小型航空风洞进行厢式载货汽车模型试验时雷诺数，堵塞比，模拟地板等重要技术问题，给出厢式载货汽车改善气动阻力特性的试验结果。     

在用轻型汽油车的净化技术和使用状况

介绍了为达到全国即将实施的相当于欧Ⅰ的排放标准 ,对在用轻型汽油车进行改造的几种技术方案 ,为我国大量的在用轻型汽油车如何达到排放法规的要求提供借鉴。