Single-roller idle passing device of plate and strip rolling mill

The utility model relates to a single-roller idle-passing device of a strip rolling mill, and belongs to the technical field of hot-rolled strip steel in the metallurgical industry. According to the technical scheme, two simulation bearing seats (1) are oppositely arranged, a first simulation bearing seat positioning block (2) is arranged below one simulation bearing seat (1), and a second simulation bearing seat transverse positioning block (10) is arranged below the other simulation bearing seat (1); the two ends of the filling roller bed (9) are rotationally connected to filling roller bed bearing seats (6) respectively, the filling roller bed bearing seats (6) are fixed to filling roller bed bases (7), the filling roller bed bases (7) are fixed to the two simulation bearing seats (1), and the filling roller bed bases (7) on the two simulation bearing seats (1) are oppositely arranged; the two radial sides of the filling roller bed (9) are filled with the roller bed simulation protection plates (8) respect