FIELD: railway transport.
SUBSTANCE: invention relates to rail vehicles, particularly, to bolster spring suspensions of bogies. Springs 15 of bolster spring suspensions are made with support coils in form of extreme working coils. Support devices are made over complete circumference of spring coils in form of grooves of semigrooves, with steplessly increasing clearances determined at unloaded state of springs between support surfaces of said supports and support coils of spring to values equal to ▵=(0,5-0,8)*tc.st where tc.st is sag of one working coil of spring under static load. According to second version, support devices 16 are made either partially from elastic material with modulus of elasticity from 5 to 100 mPa.
EFFECT: reduced overall dimensions of spring and metal usage, provision of uniform distribution of loads in springs and wheels, improved reliability and increased service life of spring suspension.
4 cl, 7 dwg
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