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苏联交通部批准了新的牵引计算规程,它是铁路工作的基本文件之一。必须对这个文件进行修订的原因是,自上一版牵引计算规程(简称《牵规》,下同)实施以来(1968年3月),无论是铁路的技术装备、它们的运用条件或技术设备的利用程度都发生了很大的变化。在这段时间里有新型的电力机车、内燃机车和电动车组投入运用,采用了更多的八轴敞车和油罐车,专用的冷藏列车数目也有增加。很多铁路线进行过综合技术改造,改造后的线路采用了无缝线路,列车运行阻力有一定的降低。
The Soviet Ministry of Transport approved a new traction calculation code, which is one of the basic documents of railway work. The reason that this document must be revised is that since the implementation of the traction calculation code of the previous edition (hereinafter referred to as “traction control”, the same below) (March 1968), the technical equipment of the railway, their conditions of use or technical equipment The degree of utilization have undergone great changes. During this time there are new types of electric locomotives, diesel locomotives and electric train sets put into operation, using more eight-axis gondolas and tankers, and the number of dedicated refrigerated trains has also increased. A lot of railway lines have undergone comprehensive technological transformation. The transformed lines have adopted a seamless line, and the train running resistance has been reduced to a certain extent.