目前,世界上许多国家对提高部分铁路线路的货物列车重量极为重视。为了放行这些列车,需加强线路上部建筑、提高车辆载重。重载列车主要运输诸如煤炭、矿石、建筑材料等大宗货物。这些货物以始发直达列车运输,途中无改编作业或者直接从一个企业的专用线开到另一个企业的专用线。直达列车在工业站的卸车作业,借助于成套专门化装卸设备来实现。提高列车重量要靠增加列车长度和改善车辆载重量及容积的利用来达到。在增添货车时 At present, many countries in the world attach great importance to increasing the weight of freight trains on some railway lines. In order to release these trains, the upper part of the line needs to be strengthened to increase the load on the vehicles. Heavy-duty trains mainly transport bulk goods such as coal, ore and building materials. These goods are delivered starting from direct trains without en-route on their way or directly from the private line of one business to the private line of another business. Direct train unloading operations at industrial stations, with the help of a complete set of specialized handling equipment. To increase the train weight by increasing the length of the train and improve vehicle load and volume utilization to achieve. When adding a truck