Table surface locking device of swing test bench and swing test bench

The invention relates to a table top locking device of a swing test bench and the swing test bench, and the table top locking device comprises a guide seat fixed on a swing seat, the guide seat is provided with a sliding spring bolt, and the sliding spring bolt is provided with an inclined supporting surface; the table top locking device further comprises a locking block hinged to the swing body, the locking block is arranged on the front side of the telescopic direction of the sliding spring bolt, and the hinge axis of the locking block is parallel to the swing axis of the swing body and perpendicular to the guide direction of the sliding spring bolt. The locking block is provided with an adaptive supporting surface which is attached to and matched with the inclined supporting surface, and the adaptive supporting surface is used for enabling the locking block to rotate around the hinge axis of the locking block when the adaptive supporting surface is pushed by the inclined supporting surface and enabling the