铁路内燃机车柴油机检修设备制造行业市场分析

通过内燃机车柴油机检修设备制造行业外部宏观环境及行业内部竞争环境的分析,指出国内和国外对内燃机车柴油机检修设备巨大的需求量,将为柴油机检修设备制造业提供良好的发展机遇,同时指出了行业目前竞争现状和可能的发展趋势。     

浅析国际货运代理人法律地位认定的若干标准

确定国际货运代理企业的法律地位并依其法律地位承担相应的责任和义务,是我们参与到国际货运游戏规则中的必要条件。本文就中国际货运代理人的法律地位认定的几个标准进行分析,以便国际货运代理人明确其法律责任意识,建立起更好的风险防范机制,实现更安全健康的发展。     

160 km/h高速货车转向架的研制

根据高速货车转向架的运用要求和运用条件,确定了160km/h高速货车转向架的主要技术参数;提出了整体焊接构架式有摇枕转向架的结构形式,介绍了其主体结构情况;结合转向架静强度和疲劳试验、线路动力学试验结果,得出了转向架设计是较为成功的结论。     

DJ1型交流传动电力机车

系统地介绍了DJ1型交流传动电车机车总参数、牵引／制动特性、主电路与辅助电路及控制电路结构，主要电气电子部件参数以及机械部分的特点。     

Logistical restructuring and road freight traffic growth

The forecasting of road freight traffic has relied heavily on the close correlation between GDP and road tonne-kilometers. It has not been rooted in an understanding of the causes of freight traffic growth. The research reported in this paper has investigated this process of traffic growth in two ways: first, by analysing official data on the production, consumption and movement of food and drink products, and second, by conducting a survey of the changing freight transport requirements of 88 large British-based manufacturers.The analysis of secondary data shows how, in the food and drink sector, the relationship between the real value of output and road vehicle-kms hinges on four key parameters: value density, handling factor, average length of haul and consignment size. An attempt is made to explain variations in these parameters.The survey of manufacturers suggests that the growth of lorry traffic is the net result of a complex interaction between factors operating at four levels of logistical management: strategic planning of logistical systems, choice of suppliers and distributors, scheduling of product flow and the management of transport resources. Changes in the frequency and scheduling of freight deliveries in response to tightening customer service requirements and just-in-time management appear to have become a more prevalent cause of freight traffic growth than the physical restructuring of logistical systems. Manufacturers anticipate that their road freight demand will broadly increase in line with sales and be largely unaffected by road transport cost increases at the levels currently proposed. The paper concludes by examining their likely reactions to a much sharper increase in the cost of road freight movement.     

6K型电车机车几何曲线通过计算

针对６Ｋ型电力机车具有３个转向架和Ｚ形斜牵引杆机构的结构特点，导出了它的几何曲线通过计算方法，经编程上机算出了结果．计算表明，机车Ⅰ端在前方的几何曲线通过性能优于Ⅱ端在前方的几何曲线通过性能，中转向架单侧间隙横动量的设计值（２００ｍｍ）大于Ⅰ端在前过曲线的最小值（１８７ｍｍ），但小于Ⅱ端在前过曲线的最小值（２０５ｍｍ）．     

高速动力车不锈钢蒙皮焊接接头的耐蚀性能研究

本文对高速动力车车体1Cr18Ni9Ti不锈钢蒙皮焊接接头进行了耐晶间腐蚀研究，认为采用H1Cr18NiTi、HoCr19Ni12mO2O焊丝MIG、TIG焊均能有较子的耐腐蚀性能，但焊后热娇形对耐腐蚀性十分不利。     

SS_(7D)型电力机车主变压器和电抗器的设计

介绍了 SS7D型电力机车使用的 JDFP2 - 770 0 / 2 5型主变压器的主要技术数据、设计特点、主要结构 ,给出了阻抗实测值 ,对平波电抗器和供电电抗器也作了简单介绍。该产品已通过试验及现场运用 ,证明完全符合设计要求。     

SS_4改型机车管路防寒措施探讨

针对SS4改型机车在哈尔滨地区冬季的实际运行情况,详细阐述了SS4改型机车管路系统的防寒措施,重点说明了电加热防寒的方法以及防寒效果,对电力机车在寒带地区的防寒改造有一定的借鉴和参考价值。     

货车轮重测试系统研究

随着货车车辆运行速度的提高 ,轮 (轴 )重偏差对车辆动力学性能和制动性能的影响也会加剧。为了检测货车车辆轮 (轴 )重偏差 ,设计了货车车辆轮 (轴 )重测试系统 ,能够完成轮重测量 ,并可提供轮重偏差调整方案