Input end assembly of mechanical supercharger

The invention provides an input end assembly of a mechanical supercharger, which is applied to the field of mechanical superchargers. The input end assembly of the supercharger comprises a belt pulley (2). A front cover plate (20) and a bearing plate at the input end of the mechanical supercharger form a hollow cavity structure, an input shaft (3) and a driving shaft (12) are installed in a hollow cavity and are connected by a shaft coupling (15), a driving gear (13) is sleeved and installed on the driving shaft (12), a driven gear (14) is sleeved and installed on a driven shaft (16), the driving gear (13) and the driven gear (14) are engaged, the input shaft (3) is fixedly connected with the belt pulley (2), and a decorative cover (1) is installed on the other face of the belt pulley (2)which is connected with the input shaft (3). By the technical scheme, the coaxiality of the driving shaft and the input shaft when the supercharger is in different working conditions can be ensured, the running stability of t