标准摘要
[中文适用范围]: 第二版取消并取代了第一版(1973 年)。 指定 50 连接销/直径的尺寸。 50.8 毫米(2 英寸)/ 用于将半挂车连接至原动机,同时考虑到官方要求通常规定的重量限制。 一些图说明了形状和类型的差异。 [外文原描述]: This second edition cancels and replaces the first edition (1973). Specifies the dimensions of the 50 coupling pin /dia. 50,8 mm (2 in)/ which is used for coupling semi-trailers to prime movers, taking into account the limitations of weight generally laid down by official requirements. Some figures illustrate shapes and the difference of types.
英文名称Road vehicles — 50 semi-trailer fifth wheel coupling pin — Basic and mounting/interchangeability dimensions