Flange hub parallelism detection device for refrigeration equipment

The utility model discloses a flange hub parallelism detection device for refrigeration equipment, which comprises a base plate arranged on processing equipment, a first sliding piece corresponding to a flange is sleeved in an upper chute in a sliding manner, a second sliding piece corresponding to the flange is sleeved in a lower chute in a sliding manner, and a detection mechanism for detecting the parallelism of the flange is arranged on the base plate. When the first telescopic rod moves inwards, the support, the first sliding piece and the second sliding piece are driven to slide inwards and abut against the side ends of a flange respectively, and the flange is fixed in the containing groove; left-right deflection is carried out by taking a connection point of a long rod gear and a base plate as a base point, a driven rack slides left and right in a guide groove in a reciprocating mode, a detector carries out parallelism detection on a flange in the horizontal direction, and after detection of the detect