The utility model belongs to the technical field of the elevating conveyor, specifically disclose a novel elevating conveyor protects axle device, including tail frame and tail sprocket, tail frame one side rigid coupling has lower backplate, is connected with the roof -rack on the lower backplate, is equipped with the top board on the roof -rack, backplate, roof -rack and top board all cooperate with tail chain wheel clearance down, be equipped with the locating pin down between backplate and the roof -rack. The utility model has the advantages of simple structure and reasonable design and it is with low costs.