| 摘要 |
A suspension for a rail vehicle includes a bogie pedestal (10), an axle box (11) and suspension springs (16,18 and 19) arranged such that the axle box supports load exerted on the pedestal via the springs. The suspension includes a pair of wedge elements (20) urged, by means of the springs (18 and 19), into engagement with faces (30) of the pedestal and faces (21) of the axle box. This engagement causes damping of axle box movements. Wedge elements (20) are urged resiliently in opposing directions (A and B) into frictional slidable contact at the faces (21) by means of additional preset springs (40) mounted on the pedestal (11). This further urging is independent of the load carried by the springs and provides improved suspension characteristics.
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