The invention discloses a
brake pad which is applied to a disc type
brake system of a high-speed
train. A friction block constituted by the
brake pad can be flexibly replaced. The
brake pad comprises a
brake pad back plate which is made of a
metal material, an elastic supporting sheet, the friction block and a circular spring clamp, wherein the elastic supporting sheet is provided with a spherical supporting surface and a central guide hole; the lower part of the friction block is provided with a spherical supporting surface and a positioning and connecting shaft which is provided with a clamping groove; the connecting shaft can penetrate through the central guide hole and a back plate positioning hole of the elastic supporting sheet and is locked on the back plate by the circular spring clamp to realize floating connection; the friction block is provided with a polygonal block with a
blind hole in the center; and every three friction blocks form an
interlocking group, so that the rotation of the friction block during working of the
brake pad is prevented. The brake pad can achieve the maximum
contact friction area of the brake pad and a brake disc in a
train braking process, so that the braking process is stable and the brake pad has the functions of damping, vibration reduction,
noise reduction, heat dissipation and the like. The friction block is easy to replace, so that the
train operation cost is lowered.