Protection device for aluminum alloy door frame guide rail

The utility model discloses a protection device for an aluminum alloy door frame guide rail, which comprises a fixed metal cover plate, a movable metal cover plate is inserted into the fixed metal cover plate in a sliding manner, and self-adaptive elastic jacking mechanisms are arranged between the inner wall of the movable metal cover plate and the outer walls of the two sides of an aluminum alloy door frame. The fixed metal cover plate and the movable metal cover plate are both of a special-shaped structure with the top protruding. According to the technical scheme, the cover plate of the aluminum alloy door frame guide rail is of the special-shaped structure with the protruding top, workers can be prevented from stepping on the top of the aluminum alloy door frame when passing through the aluminum alloy door frame, the probability of stepping deformation is reduced, and potential safety hazards caused by dislocation after stepping are avoided; and secondly, the protection device is arranged to be of a tele