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调车场内车辆溜放基本阻力和风阻力是设计各类减速器、减速顶调速系统的基础,也是设计峰高和自动化驼峰溜放车辆速度控制方案的基本参数。点连式调速系统的打靶坡度和连挂区坡度的设计,都依赖于这两项阻力参数。世界上不少国家都曾花费大量的人力、物力、财力,进行过多次测阻试验和研究。我国铁道部科学研究院运输研究所在七十年代曾主持对车辆溜放阻力和道岔曲线附加阻力参数进行了测定,1985～1986年又对滚动轴承货车溜放阻力进行了试验研究。
The basic resistance and wind resistance of the vehicles in shunting yard are the basis for designing all kinds of decelerator and decelerating roof speed regulating system and also the basic parameters for designing the speed control plan of peak height and automatic hump sliding car. The design of point-by-point speed control system for the target slope and the linked area slope depend on these two resistance parameters. Many countries in the world have spent a lot of manpower, material and financial resources, conducted many resistance test and research. In the 1970s, the Institute of Transportation of China’s Ministry of Railways presided over the determination of the resistance to dragging of vehicles and the additional resistance of turnout curves. In 1985-1986, the rolling resistance of rolling stock trucks was experimentally studied.