Precise settling device for steel rolling machine maintenance and roller hoisting

The invention belongs to the technical field of mechanical equipment, and particularly relates to a precise settling device for steel rolling machine maintenance and roller hoisting. The precise settling method aims at the problem that when an existing roller is settled, butt joint consumes time and labor. According to the following scheme, the precise settling device comprises a dark box overallof a cuboid structure, and an opening is reserved in the top of the dark box; two parallel C-type steel sliding rails with opposite openings are embedded into the top end of the dark box, and the twoends of the C-type steel sliding rails are in sliding connection with rectangular sliding frames; the middles of the two rectangular sliding frames are clamped with outer buckets with upward openings,and extending rods are slidably connected in the outer buckets; symmetric guide plates are fixed to the top ends of the two extending rods correspondingly, inclined faces are reserved on the sides, close to the roller, of the