Electropneumatic double control valve comprising a sealing arrangement

• Main Authors: ROETHER FRIEDBERT, DEJA SIEGMUND, SCHAFFERT EBERHARD
• Format: Patent
• Language: English
• Published: 19.12.2006
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PISTONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; SEALINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

Electropneumatic double regulating valve for an air-operated vehicle brake system, which is disposed centrally on a wheel axle, equipped with two brakes, with a common relay valve housing ( 1 ), in which is integrated for each brake an assigned regulating valve unit, which comprises for valve actuation a control piston, which can be axially adjusted and is disposed inside an assigned control chamber ( 3 a , 3 b) and which is driven with a control pressure by way of an electromagnetic pilot valve assembly, housed in an adjacent pilot valve housing, for independent axial adjustment, whereby the pilot valve housing is connected detachably to the relay valve housing ( 1 ) by way of a sealing arrangement that lies in-between, whereby the sealing arrangement is designed as one-piece and comprises two sealing ring segments ( 5 a , 5 b), which are in essence ring-shaped and are assigned to one control chamber ( 3 a , 3 b) each and which are connected together by means of several footbridges ( 6 a to 6 c), which are molded on in-between and which are separated from each other in such a manner between the two sealing ring segments ( 5 a , 5 b) that an elastic deformation of the footbridges ( 6 a to 6 c) results in a defined compensation of the tolerance of the relative position of both sealing ring segments ( 5 a , 5 b) in the connecting plane between the pilot valve housing and the relay valve housing ( 1 ).