一、前言《铁道车辆》1979年第11期《关于货车冲击座开口尺寸问题的讨论》(以下简称《讨论》)一文,实例计算了两种车辆组合类型通过不同曲线时车钩中心线相对车体中心线的偏转角γ,并指出“车辆通过反向曲线时最为不利,其次是圆曲线与直线,再次 First, the introduction of “railway vehicles” 1979 the 11th “on the truck impact seat opening size of the discussion” (hereinafter referred to as “discussion”) article, an example calculated two types of vehicle combinations through different curves when the centerline of the coupler relative to the body Center line of the deflection angle γ, and pointed out that "the vehicle through the reverse curve of the most unfavorable, followed by a circular curve with a straight line, again