Transition assembly for connecting motor and reduction gearbox, and reduction motor

The utility model discloses a transition assembly for connecting a motor and a reduction gearbox and a reduction motor, the transition assembly comprises a transition flange plate and a transition shaft arranged in the transition flange plate, the transition flange plate comprises two flange plates which are connected together, and the two flange plates are respectively connected with the motor and the flange plate of the reduction gearbox. One end of the transition shaft is provided with an inner hole, the other end of the transition shaft is provided with an outer pillow block, the inner hole is connected with a shaft extension of the motor, and the outer pillow block is sleeved with a gear matched with the reduction gearbox. According to the transition assembly, on the premise that an original first-stage reduction gearbox and an original second-stage reduction gearbox are reserved, a new national standard flange motor with the same power or a national standard flange motor with higher upgrading power can