| 摘要 |
The bogie, which can be self-steering, has a transverse bolster 24 and a pair of side frames 30 with respective mounting interfaces between the ends of the bolster and the sideframe comprising friction dampers 64-70 that have sliding contact with mating bolster surfaces 72 with a disinclination to stick-slip behaviour. The dampers 64-70 are provided in sets at each bolster end, each set comprising at least two dampers, one laterally inboard of the other. Each damper 64-70 is wedge-shaped, with an angle of over 35 degrees and is individually spring-biassed to contact the corresponding mating surface 72. The friction dampers may be provided with brake linings, or similar features, on their faces. The friction dampers 64-70 may operate to yield upward and downward friction forces that are not overly unequal. The friction dampers 64-70 may be mounted in a four-cornered arrangement at each end of the truck bolster. The spring groups may include sub-groups of springs of different heights. |
