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由于运输新品种货物、采用装卸机械和增加货物列车重量等运用条件的变化,导致了敞车破损率的增加。改善敞车运用技术状态的方法之一,是在定期修理时进行改造。第一批改造的敞车是1957年在乌拉尔车辆工厂完成的。这些车辆是由C_T3号钢制造的,个别部分(端梁、侧立柱)的应力超过交通部-重工业部标准规定的许用应力。因此在改造中实际上只是解决提高旧型车的强度问题。交通部中央科学研究院的试验台试验和
Due to the transportation of new varieties of goods, the use of loading and unloading machinery and increase the weight of goods such as changes in the conditions of use of the train, resulting in an increase of gondola damage rate. One of the ways to improve the technical condition of gondola cars is to revamp them during regular repairs. The first converted Gondola was completed in 1957 in the Ural car factory. These vehicles are made of C_T3 steel and the stresses in individual sections (end beams, side columns) exceed the allowable stresses specified by the Ministry of Communications - Ministry of Heavy Industry standard. Therefore, in the process of reform, it is actually only to solve the problem of improving the strength of old cars. Ministry of Communications Central Research Institute test bench test and