A turntable structure , comprising: a cleaning turntable , one side of the cleaning turntable being connected with a cleaning piece configured to clean a floor; an adjusting component slidably connected with the cleaning turntable along a target direction, and located on a side of the cleaning turntable facing away from the cleaning piece , the target direction being parallel to a rotating shaft of the cleaning turntable , and one side of the adjusting component far away from the cleaning piece being connected with a driving mechanism of a robot to drive the cleaning turntable to rotate; a pressure unit provided between the cleaning turntable and the adjusting component , and configured to apply a vertical downward force to the cleaning turntable when the target direction is perpendicular to a horizontal plane; and a limiting structure configured to limit a sliding distance of the cleaning turntable relative to the adjusting component along the target direction; wherein the limiting structure comprises a limiting block and a limiting groove , wherein the limiting block is accommodated in the limiting groove , characterized in that a groove wall of the limiting groove is configured to limit a moving distance of the limiting block along the target direction; the limiting block and the limiting groove are provided between the adjusting component and the cleaning turntable , or the limiting block is provided on the adjusting component and the limiting groove is provided on the cleaning turntable , or the limiting block is provided on the cleaning turntable and the limiting groove is provided on the adjusting component . a cleaning turntable , one side of the cleaning turntable being connected with a cleaning piece configured to clean a floor; an adjusting component slidably connected with the cleaning turntable along a target direction, and located on a side of the cleaning turntable facing away from the cleaning piece , the target direction being parallel to a rotating shaft of the cleaning turntable , and one side of the adjusting component far away from the cleaning piece being connected with a driving mechanism of a robot to drive the cleaning turntable to rotate; a pressure unit provided between the cleaning turntable and the adjusting component , and configured to apply a vertical downward force to the cleaning turntable when the target direction is perpendicular to a horizontal plane; and a limiting structure configured to limit a sliding distance of the cleaning turntable relative to the adjusting component along the target direction; wherein the limiting structure comprises a limiting block and a limiting groove , wherein the limiting block is accommodated in the limiting groove , characterized in that a groove wall of the limiting groove is configured to limit a moving distance of the limiting block along the target direction; the limiting block and the limiting groove are provided between the adjusting component and the cleaning turntable , or the limiting block is provided on the adjusting component and the limiting groove is provided on the cleaning turntable , or the limiting block is provided on the cleaning turntable and the limiting groove is provided on the adjusting component . <EOS>