| 摘要 |
A mobile component having a roller bearing unit, in particular a mobile component having a steering roller, a roller, in particular a drive roller, being rotationally braced in a pivot unit, which is supported via a pivot bearing on the frame of the mobile component, the axes of rotation of the two pivot bearings in particular being aligned perpendicularly with respect to each other, the axis of rotation of the pivot bearing for pivoting parallel to the direction of the normal of the normal of the driving surface of the mobile component touched by the roller, a drum brake being developed on the roller, the actuation of the drum brake being able to be brought about by an electromagnet, which is connected on the frame of the mobile component, the drum brake being able to be actuated by the electromagnet via a spline gear. |
