Furnace bottom roller device and quenching furnace

The embodiment of the utility model provides a furnace bottom roller device and a quenching furnace. The furnace bottom roller device comprises a bearing part, a bearing and a spacer ring. The bearing part is used for bearing and transporting steel plates. The bearing is rotationally connected with the furnace bottom roller device and used for connecting the furnace bottom roller device with the quenching furnace, and the bearing can enable the bearing part to rotate relative to the quenching furnace so as to drive the steel plate to move in the conveying direction. The bearing part is sleeved with the spacer ring, forward force for forward transportation of the steel plate is given along with rotation of the bearing part, the steel plate does not make direct contact with the bearing part but makes direct contact with the spacer ring, and therefore the problems that the steel plate is scraped due to nodulation on the surface of the bearing part, and the surface quality of the steel plate is low are solved. 本申