Tongue-bite-preventing oral cavity supporting device for stomatology department

The utility model discloses an oral cavity supporting device capable of preventing a tongue from being bitten for the department of stomatology, which belongs to the technical field of oral cavity supporting and is characterized by comprising a connecting rotating mechanism, an adjusting expansion mechanism, an overturning assembly, an upper clamping plate and a lower clamping plate, the rotating assembly can be used for connecting the connecting assembly with the upper clamping plate and the lower clamping plate, so that the rotating assembly can drive the connecting assembly to turn left and right, the connecting assembly can be used for connecting the adjusting expansion mechanism, the connecting assembly is matched with the rotating assembly for use, and the adjusting expansion mechanism can be freely adjusted up, down, left and right; by means of the structure, when a doctor treats the oral cavity of a patient, the effects of no obstruction and shielding are achieved, the oral cavity of the patient can b