| 摘要 |
<p>An elastic hinge of a central buffer coupling for rail cars, comprises a bearing housing which has at least one end with a coupling rod receiving opening into which a coupling rod extends. The interior wall of the housing has a plurality of axially spaced radially inwardly extending annular housing cam surfaces which engage between similar cam surfaces defined on a coupling rod which is inserted into the housing. A plurality of rings are arranged on the coupling rod between the coupling rod cam surfaces and they have outer peripheries which bear on the housing between adjacent housing cam surfaces. The housing interior wall and the coupling rod have an oval cross-section and the rings are held in spaced axial relationship by the coupling rod cams. The housing and the rings may be made of two semiannular parts, and the housing parts may be bolted together.</p> |
