ELECTROPNEUMATIC WINDSHIELD WIPER DRIVE FOR A RAIL VEHICLE, DRIVE FOR A WINDSHIELD WIPER AND PNEUMATIC SYSTEM FOR OPERATING A DRIVE FOR A WINDSHIELD WIPER

摘要

The present invention relates to a pneumatic system (120) for operating a drive (110) for a windscreen wiper for a railway vehicle, wherein the windshield wiper drive (110), has a piston guide means (140) with a first terminal (143) and one of the first terminal (143) opposite second terminal (146), wherein said at least one piston guide means (140) in the pistons (150) is formed, opposite linear movements along the main direction of extension of the piston guide means (140), in order to carry out an alternating rotary motion of the wiper shaft (156) to effect. The pneumatic system has a supply connection (158) for a compressed air supply (160) which is connected via a first normal operation connecting cable (172) and a for this purpose, which are arranged in parallel first emergency operation , the connection line (174) connected to the first terminal (143) and via a second normal operation connecting cable (176) and a for this purpose, which are arranged in parallel second emergency operation , the connection line (178) with the second terminal (146) is connected. A valve means (180) is designed in a normal operation of the pneumatic system (120) of the supply connection (158) via the first normal operation connecting cable (172) with the first terminal (143) and via the second normal operation connecting cable (176) with the second terminal (146) and in an emergency operation of the pneumatic system (120) of the supply connection (158) via the first emergency operation , the connection line (174) connected to the first terminal (143) and via the second emergency operation , the connection line (178) with the second terminal (146), in order to couple the alternating rotary motion of the wiper shaft (156) to effect.