The utility model relates to a backup pad assembly for preceding steering drive axle, the on -line screen storage device comprises a base, the base is by a fire prevention lightning protection steel sheet through the shaping of punching press drawing process, the middle part of base sinks, and both sides difference tilt up extends the connecting portion that form two symmetries about the base, andboth sides are upwards bent respectively to prolong and are constituted two supporting parts around the base, and are arbitrary connecting portion on be fixed with at least two supports of being connected that are used for passing through bolted connection with preceding steering drive axle, be fixed with the guard plate along vertical direction on the supporting part behind the base, be connected with two at least first strengthening ribs between the lateral surface of guard plate and the supporting part, the left right direction of the middle part edge base of base is equipped with at leasttwo the second strengthening ribs that are parallel to each other, the both ends of second strengthening rib link up with the connecting portion that the base was controlled respectively, the utilitymodel discloses an interchangeability is strong, and the installation is simple and easy, can effectively reduce the drag link assembly of market anticipation, the main assembly trouble of collidingwith that subtracts.