Centrifugal clutch speed change device for automobile

The centrifugal clutch speed changing device for the automobile comprises a clutch cover, a sliding sleeve is arranged on the right side of the clutch cover in a penetrating mode, a connecting groove is formed in the right end of the sliding sleeve, a limiting structure is arranged at the right end of the connecting groove and corresponds to the sliding sleeve, and a gearbox input shaft is arranged on the sliding sleeve in a penetrating mode. The gearbox input shaft extends into the clutch cover, a pressing plate is arranged on the side face of one end of the gearbox input shaft, compression springs are arranged on the upper face and the lower face of the right end of the pressing plate relative to the right side of the interior of the clutch cover, a friction disc is arranged at the left end of the gearbox input shaft, and a connecting disc is arranged at the left end of the clutch cover. A flywheel is arranged at the left end of the connecting disc, and a mounting disc is arranged on the outer surface of th