BIMETALLIC BRAKE SHOE Russian patent published in 2007 - IPC B61H1/00 F16D65/04 F16D69/00 

FIELD: railway transport; brake shoes of rolling stock.

SUBSTANCE: proposed bimetallic brake shoe includes arch-shaped cast iron bar with boss for wedge-like lock pin for fastening in shoe holder. Cylindrical inserts made of material of higher abrasiveness than material of bar are arranged in longitudinal rows in body of cast iron bar. Inserts are attached to steel frame located on rear part of bar by sport welding. Inserts are arranged in two groups. Inserts within each group are arranged in two parallel rows. Extreme cylindrical inserts in rows are provided with ring grooves on side surface. Groups of inserts are separated by section without inserts P. Steel frame has shaped section enclosing boss of cast iron bar, with holes in side surface at level of hole in boss, for fixing shoe wedge-like lock pin.

EFFECT: increased balanced service life, improved reliability, efficiency, provision of ease of servicing of shoes, increased service life of wheels owing to reduced wear causing by bimetallic shoes, improved quality of shoes.

15 cl ,5 dwg