| 摘要 |
<p>In a drum brake for heavy vehicles liable to make brake noise during brake activation the noise may be eliminated by applying to the outside of the brake drum (3) a layer (14, 15) of a non-metallic, at least partly elastically deformable material and a steel ring (16) causing a substantial compression force upon the drum (3) via the non-metallic layer (14, 15), the said steel ring (16) being mounted by being opened by a radial cut, heavily pre-stressed and finaly closed by being welded in place. According to the invention it has been possible to weld such heavy steel ring (16) in place by welding a steel sheet (18) to the inner side of the ring (16) prior to the mounting of the steel ring (16) around the brake drum (3), said steel sheet (18) being directed concentrically towards the inner cylindrical surface of the ring (16) on the other side of the ring opening.</p> |
