METHOD OF SIZING SPRINGS OF MODEL 18-578 TRUCK SPRING GROUPS IN SCHEDULED CAR REPAIR Russian patent published in 2008 - IPC B07C5/04 

FIELD: transport.

SUBSTANCE: springs are, first, divided into eight size groups, their height varying from 252 to 266 mm, and distributed in eight cells so that the difference in spring height in every cell does not exceed 2 mm. The first two cells accommodate underbolster springs in the amount of 5/7 of the total set of springs of 28 pairs or several sets in compliance with the car repair schedule, the spring to be mounted only under truck bolster. The last two cells accommodate underwedge springs to be mounted only under friction wedges in the amount of 2/7 of the total set, while the third to sixth cells accommodate a total set of springs of 28 pairs per a car or several sets to be mounted both under truck bolster and under friction wedges. In completing, underbolster springs are selected from one of the first six cells and underwedge springs are taken from every other cell.

EFFECT: mounting of springs in compliance with specified standards.

1 dwg, 2 tbl, 1 ex