CAR BOGIE OVERSPRING BEAM FOOTSTEP BEARING Russian patent published in 2004 - IPC

FIELD: railway transport.

SUBSTANCE: invention relates to manufacture and repair of overspring beams of freight and passenger car bogies. Footstep bearing place is cylindrical cavity in overspring beam provided with outer ring bead, flat support surface with central hole for kingrip and wear-resistant insert. Wear-resistant insert is made in form of plate with flat support surface provided with hole, coaxial with hole for kingrip, around which inner bead is made, and cylindrical thrust surface. Insert is installed with interference inside outer bead of footstep bearing place. Antifriction and high strength polymeric coating is applied to surfaces of insert in contact with top pivot bearing and kingpin. Said coating can be made of reinforced polyfuryte, thickness not less tolerable wear size of overspring beam at repair.

EFFECT: increased service life and repairability of car bogie footstep bearing.

3 dwg