Double-support balanced stress structure for rolling fatigue test sample

The utility model discloses a rolling fatigue test sample double-support balance stress structure which comprises a bottom plate and an experimental sample bearing mechanism arranged at the top end of the bottom plate in the middle, a gravity applying mechanism is fixedly arranged at the top end of the bottom plate, and the gravity applying mechanism abuts against the top end of the experimental sample bearing mechanism. The gravity applying mechanism comprises two supporting columns symmetrically arranged on the two sides of the bottom end of the bottom plate, a force applying cross beam is jointly arranged on the outer edge faces of the two supporting columns in a sliding mode, and a force applying sensor abutting against the experiment sample bearing mechanism is fixedly arranged in the center of the bottom end of the force applying cross beam; and the experimental sample bearing mechanism comprises a lower sample chuck and a support which are centrally and fixedly mounted at the top end of the bottom plat