Four-roller adjusting device of rolling mill

The utility model discloses a four-roller adjusting device of a rolling mill, which comprises a casing and four roller groups in the casing, and is characterized in that each roller group comprises a roller shaft and rollers capable of sliding along the roller shaft and rotating along with the roller shaft, and the four rollers are sequentially staggered and tangent to form a rectangular hole with a rectangular center; a movable adjusting device capable of enabling every two tangent rollers to move in the direction perpendicular to the tangent plane at the same time is connected between every two tangent rollers, the movable adjusting devices are arranged on the machine shell, and open holes allowing the rectangular steel to pass through are formed in the positions, corresponding to the rectangular holes, of the front wall and the rear wall of the machine shell; the linkage adjusting mode of the two tangent wheels can be adjusted through one movable adjusting device, the original adjusting structure is simpli