我公司一台CA30型压路机使用一年后，双联齿轮泵输入轴花键严重磨损，致使转向及振动功能丧失。一般的焊补很难保证修复后整轴的使用性能及轴上齿轮的精度要求，因此，我们采用以下方法进行了处理。（1）将花键轴直立于水中，水面距花键下端1cm左右，防止在焊补时，轴上的齿轮 After one year of using a CA30 roller in our company, the spline of the double gear pump is seriously worn, resulting in loss of steering and vibration functions. General welding is difficult to guarantee the use of the entire shaft repair performance and shaft accuracy requirements, therefore, we use the following methods were processed. (1) the spline shaft upright in the water, the water surface from the spline at the bottom of about 1cm, to prevent welding repair, the shaft gear