1956年,在铁路运输中出现了第一批试验型六轴敞车,从1958年起,开始生产这种车辆。在敞车结构中,最复杂的问题在于创造三轴转向架的动力平稳性和运行可靠性。三年以后,只制造了两辆125吨位的试验型八轴敞车。八轴敞车的优点是:利用两个标准型二轴转向架组成一个四轴转向架。上述车辆的主要指标列于表1。 In 1956, the first experimental six-axle gondola car appeared in railway transportation. Since 1958, the production of such vehicles began. In the gondola structure, the most complicated problem is the creation of a three-axle bogie power stability and operational reliability. Three years later, only two 125-tonne piloted eight-axle gondolas were manufactured. The advantages of an eight-axle gondola are: The use of two standard two-axle bogies to form a four-axle bogie. The main indicators of the above vehicles are listed in Table 1.