Railway car hydraulically dampened traction rods

Claim 1

A rail vehicle, especially self-propelled vehicle, which includes in combination: a main frame, a pair of bogies pivotable about a central axis and operatively connected with said main frame and arranged in spaced relationship to each other in the longitudinal direction of said main frame, two hydraulic cylinder-piston systems respectively arranged between and in spaced relationship to said bogies and operatively connected therewith, one of said two cylinder-piston systems being arranged on one side of said frame and the other one of said two cylinder-piston systems being arranged on the other side of said frame, said two cylinder-piston systems being located symmetrically with regard to the longitudinal central axis of said rail vehicle, two pairs of pressure and pull rods respectively interposed between said cylinder-piston systems and each bogie of said pair of bogies, each cylinder-piston system having two separately acting working pistons dividing the pertaining cylinder into two end and one intermediate working chambers, each of the two separately acting working pistons of each cylinder-piston system being respectively pivotally connected to one end of one rod of said pair of pressure and pull rods while the other ends of said pressure and pull rods are respectively pivotally connected to the pertaining bogie of said pair of bogies, and three conduit means for establishing communication between the three respective working chambers of one cylinder-piston system with the corresponding working chambers of the other cylinder-piston system for transmitting pulling and braking forces between bogies and said main frame furnishing an adjustable elasticity during power transmission.