The invention relates to a collecting
ring device and a generator, the collecting
ring device comprises a rotor
assembly and a
brush holder
assembly, the rotor
assembly comprises a rotating shaft, slip rings, a fan and a wind shield, the slip rings and the fan sleeve the rotating shaft, the two slip rings are located at two sides of the fan, and the wind shield is in a
volute shape and covers the fan. The
brush carrier assembly comprises
brush boxes and electric brushes, the multiple brush boxes surround the periphery of the sliding ring in the circumferential direction and form a group, the two sides of the wind shield are each provided with two groups of brush boxes in the axial direction of the rotating shaft, the electric brushes are arranged in the brush boxes and make contact with the sliding ring, and an air outlet of the wind shield faces the contact face of the electric brushes and the sliding ring. The air flow is guided by the
volute type wind shield, so that
cold air is distributed more uniformly and dispersedly, local air flow dead angles are avoided, and the heat dissipation effect of the
cold air is improved. And moreover,
cold air exhausted by the wind shield sequentially flows through the two groups of brush boxes, so that the
airflow continuously exchanges heat in the axial flowing process, and the heat exchange path is prolonged.