BOLSTER Russian patent published in 2010 - IPC B61F5/16 

FIELD: transport.

SUBSTANCE: invention relates to railway transport, namely to bogie bolster design. Support column coupling bolt hole receives sleeve with inner surface that has hardness exceeding that of its main material. Said sleeve can be made from non-metallic material. Sleeve height exceeds thickness of bearing seat in the zone of coupling bolt hole. One end of the sleeve outer surface has circular flange in contact with replaceable cup fitted into bearing. One or several ledges are arranged all around in the corner between said circular flange and sleeve outer surface. Said cup and bearing mirror have slots to receive aforesaid ledges. Lengthwise cuts along sleeve lengthwise axis are made on the sleeve other end arranged inside bolster and all around it. Sleeve outer surface, within zone limited by height of lengthwise cuts, has circular groove made at the level of bearing seat inner surface in the zone of coupling bolt hole. Circular groove accommodates split ring passing through the holes of locks fitted in the sleeve lengthwise cuts.

EFFECT: simplified design.

8 cl, 7 dwg