Belt deviation rectifying mechanism and belt assembly line

The utility model discloses a belt deviation rectifying mechanism which is used for being installed on a belt assembly line to rectify deviation of a belt and comprises a fixing plate used for being fixed to the belt assembly line; the at least two deviation rectifying assemblies are fixed to the fixing plate and used for being arranged on the two sides of a belt to prevent the belt from deviating, each deviation rectifying assembly comprises a fixing rod and a rolling wheel, the fixing rods are installed on the fixing plate, the rolling wheels are fixed to one ends of the fixing rods, and the rolling wheels can rotate circumferentially relative to the fixing rods; and a notch matched with a belt is formed in the roller in the circumferential direction. A plurality of deviation rectifying assemblies are integrated on the belt deviation rectifying mechanism and can be used for being matched with a belt to prevent the belt from deviating. The deviation rectifying assembly is provided with a roller provided with