Lifting device for protecting roller

The invention relates to a lifting device for protecting a roller, which comprises a base (1), a bracket (2), rolling shafts (3) and screws (4). The base (1) is a piece of iron plate, eight threaded holes are uniformly distributed in the periphery of the base (1), and the screws (4) are respectively arranged in the threaded holes; the bracket (2) comprises two pieces of parallel iron plates, the bottom of the bracket (2) is fixed with the base (1), and two ends of the upper of the bracket (2) are provided with round holes; and the rolling shafts (3) are arranged on the upper of the bracket (2), and two ends of the central shafts of the rolling shaft (3) are respectively placed into the round holes of the upper of the upper of the bracket (2).