Large RV reducer vertical fatigue test device

The utility model discloses a vertical fatigue testing device for a large RV speed reducer. The vertical fatigue testing device comprises a base, a driving motor, a speed reducer cover, a load connecting rod, a balancing weight, a motor shaft, a connecting shaft, a bearing, a retainer ring for a hole and a retainer ring for a shaft, the bottom of the base is provided with a bolt counterbore, and the base is connected to the ground through a bolt; the utility model relates to a vertical type testing device, which comprises a base and a reducer cover, the reducer cover is used for installing a reducer to be tested, the middle of the reducer cover is provided with a through hole, and the reducer cover is provided with unthreaded holes which are the same as the distribution position of a shell of the reducer to be tested. The motor is also installed on the base, the structure is compact, space is saved, and cost is low; the motor shaft, the connecting shaft and the sun gear all adopt interference connection and k