TROLLEY with friction dampers FOR freight railway cars

摘要

The invention relates to the field of railway transport, namely the construction of railroad freight cars trucks. The trolley comprises two lateral frames, wheelsets and bogie bolster supported on the side frames by a central spring suspension, consisting of a double row of coil springs and wedge vibration absorbers, wherein each wedge vibration damper comprises a hollow body, a vertical surface with a stepped shoulder at the bottom thereof , an upper surface and an inclined surface which is situated to the horizontal plane at an angle α 45-60 ° and a bulge in the vertical plane along the radius R in the range from 650 g about 950 mm, the total width of the inclined surface and the damper wedge in 23-92% greater than the width b of its vertical surfaces, and the side portions of the inclined surface protruding beyond the vertical surface located below the top surface. Achieved improved performance characteristics of the truck. 3 yl.