Rail vehicle underframe auxiliary water drainage structure

A rail vehicle underframe auxiliary water drainage structure is characterized in that an auxiliary water drainage pipe is arranged at the side end part of a vehicle underframe cap-shaped beam; one endof the auxiliary water drainage pipe is inserted into the underframe cap-shaped beam and attached to the inclined surface of the underframe cap-shaped beam; the other end of the auxiliary water drainage pipe extends out of a vehicle body; a bottom plate is arranged at the tail part of the auxiliary water drainage pipe; and water drainage holes are formed in the bottom plate. According to the railvehicle underframe auxiliary water drainage structure, as the auxiliary water drainage pipe is additionally arranged on the vehicle underframe cap-shaped beam, rainwater flowing into a a crack between the side wall and an underframe is drained in the case that a vehicle main water drainage system suddenly fails to work so as to prevent accumulated water from permeating into a vehicle through a wire pipe to cause unnecessa