Hydropneumatic piston/cylinder arrangement

摘要

A hydropneumatic piston/cylinder arrangement, in particular for use as a spring element and/or shock absorber element, includes a cylinder (1) and a piston (15) axially movable in the cylinder chamber (5) of the cylinder. The cylinder chamber is filled with hydraulic fluid. The piston (15) is connected to a piston rod (13) extending outwardly in a sealed manner from one end of the cylinder (1). The base of the piston remote from the piston rod (13) can be operatively connected to a pneumatic spring mechanism (7) to convey fluid. A piston accumulator (7) has an accumulator piston (19) directly adjoining the hydraulic fluid in the cylinder chamber provided as the spring mechanism.

主权项

1. A hydropneumatic piston/cylinder arrangement, comprising:
a cylinder having a cylinder chamber filled with hydraulic fluid; a main piston axially movable in said cylinder chamber and having a base; a sealed piston rod connected to said main piston and extending outward from one end of said cylinder, said base of said main piston facing away from said piston rod; a pneumatic spring being in a fluid carrying operative connection with said base of said main piston, said pneumatic spring including a piston accumulator having an accumulator piston directly adjacent to said hydraulic fluid in said cylinder chamber; and an intermediate body being disposed in and axially stationary in said cylinder chamber between said main piston and said accumulator piston and having a fluid passage therein providing a predetermined fluid flow axially through said intermediate body, a throttle check valve being in said fluid passage in said intermediate body, said throttle check valve having a valve plate with a borehole forming a throttling point in said fluid passage, said borehole remaining open providing fluid communication through said borehole between portions of said cylinder chamber on opposite sides of said intermediate body in all positions of said valve plate.