一、前言五十年代初车辆轮对的检修限度有些是沿用敌伪时期的规定,这些限度是适应当时的运用条件的。当时列车的一般时速是30～40公里,最高时速也不过是60～70公里。随着我国铁路运输的发展,我国铁路开始使用50千克/米的钢轨,线路质量不断提高。从 I. Preface In the early 1950s, the limits of overhauling of vehicle wheelsets were somewhat based on the provisions of the period of the enemy’s puppet period. These limits were adapted to the prevailing conditions of application. At that time the train’s general speed is 30 to 40 km, the maximum speed is nothing but 60 to 70 km. With the development of railway transportation in our country, the railways in our country start to use 50 kg / m rails, and the quality of the lines is constantly improving. From