METHOD OF FASTENING REPLACEABLE PROTECTIVE COVER PLATES ON SUPPORT SURFACES OF FREIGHT CAR BOGIE SIDE FRAME Russian patent published in 2006 - IPC B23P6/00 F16B1/00 

FIELD: railway transport; repair of freight car bogies.

SUBSTANCE: according to proposed method, trough-like replaceable cover plate is arranged on support surface of axle-box aperture of side frame. Said cover plate is secured at cold state by means of two pairs of lugs. One of pairs of lugs is bent onto horizontal flange of frame H-section and the other, onto wall of frame through dummy holes provided on box section part. Said fastening can be done by stud passed through holes in vertical posts of replaceable protective cover plate and dummy holes in frame box section part. Gasket made of rubber or rubber-like material, 4-7 mm thick, is placed between support surface of side frame and replaceable protective cover plate. Gasket suits form of support surface of side frame and has dimensions on plan exceeding support surface by 10-25%. Gasket is compressed in direction of action of working loads. Protective cover plate is secured after compression of gasket.

EFFECT: prevention of displacement of protective cover plates relative to support surfaces of side frame, reduced vertical dynamic loads.

1 ex, 3 dwg