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调压开关是韶山1型电力机车用来进行调速的一个组合式电器。它上面的绕组转换开关工作条件最差;在开闭过程中接触元件受到的冲击力最大,因而触头体疲劳断裂率也最高。运行中的机车一旦发生此类(特别是26反触头体)断裂,机破事故将很难避免。 1985年7月2日和8月5日,我段324号机车和335号机车在运行中均因26反触头体自M8螺孔处断裂(如图1所示)而发生机破。据调
Regulator switch is a combination of Shaoshan Electric Locomotive 1 used for speed control. The winding changeover switch above it has the worst working condition; the contact element is subjected to the maximum impact force during opening and closing, and therefore the contact body has the highest fatigue fracture rate. In the event of running locomotives of this kind (especially the 26 anti-contact body) breaks, the broken machine accident will be very difficult to avoid. On July 2, 1985 and August 5, 1985, both the No. 324 locomotive and the No. 335 locomotive broke down due to the fracture of the 26 anti-contact body from the M8 screw hole (as shown in Figure 1). According to tune