PNEUMATIC SUSPENSION DEVICE WITH INTEGRATED CONTROL VALVE AND ROD-LIKE ACTUATION MEANS Russian patent published in 2017 - IPC B60G15/12 B60G17/48 B60G17/52 B60G17/56 F16F9/05 F16F9/342 F16F9/512 

FIELD: machine engineering.

SUBSTANCE: pneumatic spring includes an integrated system of control valves for compressed air supply to a cavity (6) for creating spring pressure formed between a shell (1), a pipe (3) of pneumatic spring and connecting said structural elements with an resilient element of a pneumatic suspension (5). The control valve system consists of a separate air intake valve (8) and a separate air outlet valve (9). The air inlet valve (8) is arranged opposite the air outlet valve (9) with the drive pushers facing each other (8a, 9a). Mechanical actuating means located therebetween and acting thereon include a switching rod (10) arranged on one side on the shell (1) or pipe (3) of the pneumatic spring. The guides (11a, 11b) which are opposite and intended for each of the drive pushers (8a, 9a) of the switching rod (10) sliding influence the drive pushers (8a, 9a) for the position-dependent actuation stroke of the valve.

EFFECT: providing reliable air inlet and outlet to or from the cavity to create spring pressure at any stroke position.

12 cl, 4 dwg