Pneumatic door-actuating device

摘要

A pneumatic door-actuating device having an emergency valve (17) is proposed. The emergency valve (17) can be locked in the position in which the conduit (10) to the door valve (9) is ventilated. This position is the normal position assumed during travel, so that the door cannot be rendered pressureless during travel via the emergency valve (17). When the vehicle is stopped, a bolt (34) is retracted by the electromagnet (33). An actuation of the emergency valve (17) then causes a pressureless switching of the door cylinder (4). The door-actuating device is intended for buses for passenger transport.