Wind-driven generator roller type yaw device

The invention provides a wind-driven generator roller type yaw device. The wind-driven generator roller type yaw device solves the problems that in the case of an existing large wind-driven generator,a yaw platform device is insufficient in supporting capacity, large in starting friction torque, high in working condition requirement and difficult to maintain under the condition that the load is large. According to the technical scheme, an outer supporting sleeve and an inner supporting sleeve are fixed at the bottom of a yaw platform, an outer supporting roller with a motor is arranged between the outer supporting sleeve and a tower cylinder, an inner supporting roller with a motor is arranged between the inner supporting sleeve and the tower cylinder, bearing rings which are used for supporting the downward treading surface of the inner supporting roller and the downward treading surface of the outer supporting roller are correspondingly arranged at the inner side and the outer sideof the tower cylinder, the