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众所周知,摩擦减振器楔块上的法向力和接触面间的摩擦系数,对减振器楔块系统的摩擦力有重大影响。在运用过程中,磨耗板、楔块和摇枕的摩擦面要发生磨耗。通常,把与楔块和摇枕弹簧挠度有关的楔块和摇枕的高差У_(CP)看作是它们总磨耗的综合指标。楔块相对摇枕下降(-У)使得相对摩擦系数φ_(CP)增大,而摩擦面磨耗导致楔块升高(+У)和φ_(CP)减小。根据货车段修规则(ЦB-2709-71),在将转向架从车下推出来进行修理以前,需测量楔块弹簧和摇枕弹簧的上支承面的高差。在修完装好并落车后仍需进行类似的测量,也即У_(CP)值是修理前和修理后在负载下确定的。此时,楔块相对摇枕支承面平均偏高量允
It is well known that the normal force on the friction damper wedges and the friction coefficient between the contact surfaces have a significant effect on the friction of the damper wedge system. In the course of application, wear plate, wedge and bolster friction surface to wear. Typically, the wedge and bolster spring deflection of the wedge and bolster height difference У_ (CP) as a comprehensive indicator of their total wear. The wedge relative to the bolster (-У) causes the relative coefficient of friction φ_ (CP) to increase, while the frictional surface wear causes the wedge to rise (+ У) and φ_ (CP) to decrease. According to the trucking regulations (ЦB-2709-71), the height difference between the upper bearing surfaces of the wedge springs and the bolster springs shall be measured before the bogie is pushed out of the vehicle for repair. A similar measurement is still to be made after the installation has been completed and the vehicle has been taken off, ie the У_ (CP) values are determined under load before and after repair. At this point, the average wedge relative bolster bearing surface allow amount