LIPLESS BIMETALLIC BRAKE SHOE FOR LOCOMOTIVE Russian patent published in 2007 - IPC B61H1/00 F16D65/08 

FIELD: railway transport; brakes of rolling stock.

SUBSTANCE: proposed brake shoe contains cast iron bar on rear side of which boss is arranged containing steel member for wedge-like cotter of shoe holder made in form of shaped section of steel plate enclosing the boss. Hole to pass wedge-like cotter is made in boss. Member is secured on steel plate covering bra from rear side and passing under boss. Found at edges of bar over ends of steel plate are T-shaped cast iron projections for engagement with brake shoe holder. Inserts made of material, abrasiveness differing from abrasiveness of cast iron bar are fitted in body of cast iron bar. Inserts are cylindrical, being arranged on steel plate with embedding into cast iron bar in two groups. Centers of three nearest inserts in each group are equidistant from each other. Groups of inserts are separated by section without inserts, and four extreme cylindrical inserts in groups are provided with ring grooves on side surface. Each group consists of seven insets.

EFFECT: increased balanced service life, reliability, efficiency increased service life of wheels owing to reduction of their wear caused by brake bimetallic shoes.

12 cl, 5 dwg