Shaft diameter detection device

The utility model discloses a shaft diameter detection device comprising a pedestal, the upper end of which is respectively provided with a first groove and a second groove; the first electric sliding table is mounted in the first groove, and a movable mounting assembly is mounted on a sliding platform of the first electric sliding table through a connecting column; the fixed mounting assembly is mounted at the upper end of the base, and the fixed mounting assembly is matched with the movable mounting assembly; and the second electric sliding table is installed in the second groove, an L-shaped supporting column is installed on a sliding platform of the second electric sliding table, a first elastic column is installed on the L-shaped supporting column, and a wireless positioning sensor is installed at one end of the first elastic column. According to the utility model, the wired positioning sensor and the wireless positioning sensor are matched for use, so that the horizontal height of the two groups of sens