Mounting assembly and method for hub disc, motor and coupling of suspension type direct-drive bogie

The invention belongs to the field of railway vehicles, and particularly relates to a mounting assembly and method for a hub disc, a motor and a coupling of a suspension type direct-drive bogie. A hub disc press-fitting device comprises a press-fitting device body, a hydraulic pump, an axial hydraulic cylinder and a diffusion hydraulic cylinder; the motor and coupling mounting device comprises a frame body, a motor supporting seat, a shaft sticking seat, a shaft head supporting seat, a sliding rail and a hollow shaft supporting seat; the mounting method comprises the steps that the hub disc is pressed to the axle, the coupling hollow shaft is mounted in the motor, the belt axle is mounted in the coupling hollow shaft, and the hub disc and the coupling hollow shaft are mounted. In the press-fitting process of the hub disc, the problems that large-span press-fitting operation is conducted, an axle is unstable, and axial force cannot be normally applied are effectively solved, and potential safety hazards of tra