Oleopneumatic suspension apparatus for road or rail vehicles

The oleopneumatic suspension apparatus has a first compression check valve (CL1,CL1), and expansion second check valve (CL2,CL2), a compression first hydraulic valve (V1,V1), an expansion second hydraulic valve (V2,V2), and a pre-loaded oleopneumatic accumulator (3,) constituted by a chamber. The apparatus also has a third check valve (CL3,CL3) and a hydraulic valve (V3,V3). The first of these third check valves (CL3) and hydraulic valves (V3) are mounted in parallel and are disposed between a certain point (A) and the chamber of the accumulator (A). The second set of these third check valves (CL3') and hydraulic valves (V3') are disposed between another point (A') and the chamber of the accumulator (A'). La présente invention porte sur un dispositif à amortissement du roulis, caractérisé par un premier A1 et un second A1' amortisseur lesquels comportent des vérins (114, 114') disposés verticalement dans un plan transversal, entre un bogie (14) de véhicule ferroviaire et la caisse (15) du véhicule, l'une des extrémités desdits vérins (114, 114') étant solidaire dudit bogie (14) de véhicule ferroviaire et l'autre extrémité desdits vérins (114, 114') étant solidaire de ladite caisse (15) du véhicule.