Locomotive rubber-metal pad variable diameter anti-fatigue performance improving method and locomotive rubber-metal pad

Disclosed are a locomotive rubber-metal pad variable diameter anti-fatigue performance improving method and a locomotive rubber-metal pad. By changing the structure of the rubber and metal of the rubber-metal pad and adjusting the shape and position relationship between the rubber and the metal, the anti-fatigue performance of the rubber-metal pad is improved, and the tearing phenomenon of the rubber and the metal in operation is prevented; the adjusting of the shape and position relationship between the rubber and the metal is adjusting diameters of rubber layers between the rubber and the metal of the rubber-metal pad, to make the diameter of each rubber layer to be a variable diameter, and the anti-fatigue performance of the rubber-metal pad is improved by adjusting the diameters of therubber layers. According to the invention, the rubber layers with unequal diameters are adopted, which can effectively change the stress condition of each rubber layer, so that the stress of each rubber layer is substantiall