Oral cavity supporting device for respiratory examination

The utility model discloses an oral cavity support device for respiratory examination, which comprises a left support frame and a right support frame, both the left support frame and the right support frame comprise fixing plates, hollow plates are symmetrically and fixedly arranged on the upper surfaces of the fixing plates, and a second fixing plate is rotatably arranged between the two hollow plates. Elastic blocks are fixedly mounted on the upper surface of the second fixing plate and the lower surface of the fixing plate, tooth grooves are formed in the outer surfaces of the elastic blocks, supporting columns are slidably mounted between the second fixing plate and the fixing plate, sliding grooves are formed in the upper surface of the fixing plate, and the lower ends of the supporting columns are slidably mounted in the sliding grooves; the upper surface of each supporting column is fixedly provided with a sliding block, the lower surface of the second fixing plate is provided with a second sliding gro