ELASTIC LINKAGE BUFFER COUPLING

摘要

An elastic linkage buffer coupling for rail vehicles in which a casing receives a coupling rod and in which the rod is spaced from the casing by means of prestressed elastomeric rings received between peripheral dogs on the rod and corresponding inwardly directed dogs on the casing. When placed under longitudinal stress, the rings are displaced so that first they undergo shear stress and subsequently progressively increasing compressive stress to resist the movement of the rod within the casing. The casing may be mounted on vertically directed pivots on the vehicle, the casing may be made as a pair of mirror-image halves which can be bolted together for adjusting the prestress in the rings and the rings may be slotted so that they can be inserted as half rings before prestressing by tightening of the casing.