Longitudinal beam bogie frame subway cars (optional)

摘要

The invention relates to car building. The longitudinal girder 1 of the bogie frame (option 1) has a box section and comprises an upper 2 and a lower horizontal flange 3 of uniform thickness, the longitudinal outer 4 and inner 5 vertical flanges with holes, brackets, fixed in the holes of said flanges. Box-shaped longitudinal cross-section of the beam over the entire length are identical, the outer vertical shelf 4 has a thickness smaller than the inner vertical shelf 5 is located by the brake brackets 6, 7, at least equal to the thickness of the horizontal flange of the longitudinal beams 2, 3. The longitudinal bogie frame beam 1 (embodiment 2) comprises a bent channel, the upper 8 and lower 9 horizontal shelves which are welded into a box-shaped longitudinal cross-section through the inner vertical flange 10, bracket, which matured pass through the box girder holes and still attached to it. Brake 6.7 brackets fastened in the holes 11 and outer 10 inner vertical flange, wherein the thickness of the latter, on which the brake arms, is greater than the thickness of flange bent channel. The utility model improves the reliability of bogie frames by reducing the stress concentration in compound brackets nodes with longitudinal beams. 2 bp f ly-4-yl.