HYDRAULIC two-tube DAMPER of rail vehicles

摘要

The invention relates to suspension devices of railway vehicles. Hydraulic two-tube damper of railway vehicle comprises a reservoir, a cylinder disposed therein, in which piston with rod is situated. The last one goes through the fixed with nut guide in the housing. There upper valve unit disposed in the rod and the lower valve unit disposed in the bottom cover are provided. Throttle gaps of check valves of the top and bottom valve blocks have a ratio of cross-section area equal to the ratio of crossing planes of rod and rodless cavities. The body of the rod guide is provided with evenly spaced holes that connect the rod end to the reservoir and have a total area of ​​cross-section equal to the area of ​​the live section of the pair rod guide - piston rod. The technical result: provision of constant and close by values ​​in the hydraulic dampers with symmetric action parameters of resistance and piston speed at the compression and expansion strokes.