Metro vehicle axle box suspension rail corrugation preventing and treating device

The invention relates to a metro vehicle axle box suspension rail corrugation preventing and treating device. The device is a dynamic vibration absorbing device and suspended below a metro vehicle axle box (1) to absorb the vibration energy of lower wheels under a corrugation characteristic efficiency. The device comprises a damping body (2) and a counterweight mass (3), the damping body (2) is composed of an inner side metal layer (21), a rubber damping layer (22) and an outer side metal layer (23) which are sequentially connected, the inner side metal layer is fixedly connected with the axlebox (1), and the outer side metal layer (23) is connected with the counterweight mass (3) through a tenon-and-mortise structure (4). Compared with the prior art, the vibration absorbing device is suspended below the axle box, the rail corrugation problem caused by the resonance of a wheel pair natural frequency and the natural frequency of a rail can be effectively improved to reduce the vibration and noise when the vehi