Wheelset to frame elastomeric spring units, annular elastomeric elements for use in such units and railway vehicle suspension arrangements incorporating such units.

摘要

A wheelset to frame elastomeric spring unit (8) comprising a rigid core element or pin (11), a rigid sleeve element or pot (12) surrounding and spaced from the pin (11), and an annular rubber element (10) radially compressed and axially elongated between the rigid elements, such that relative axial movement of the rigid elements causes rolling of the rubber element (10) between the rigid elements (11,12). The rubber element (10) is so constructed or arranged that the unit provides different stiffnesses in mutually perpendicular radial directions. The unit is useful as a component of a wheelset arrangement of a railway vehicle or bogie to provide different degrees of restraint against relative horizontal movement between a wheelset member and a frame member in the direction of travel and in the transverse direction.