Novel quick-change clamping device for carburetor

A novel quick-change clamping device for a carburetor comprises a base, a supporting frame and a telescopic pressure joint assembly, a bottom plate and a positioning plate are arranged at the top end of the base, connecting lugs are arranged on the two sides of the bottom plate, a plurality of positioning grooves are formed in the top end of the bottom plate, and first penetrating holes and inserting holes are formed in the groove walls of the two sides of the positioning grooves; a positioning convex belt is fixed to the bottom end of the positioning plate, a second penetrating hole is formed in the positioning convex belt, a hydraulic cylinder, a locking rod and a self-locking structure are arranged at the top end of the connecting lug seat, the self-locking structure comprises a fixed plate and a sliding plate, two guide rails are fixed between the fixed plate and the bottom plate, and a first adapter block is fixed to a piston rod of the hydraulic cylinder; two first connecting rods are rotationally arran