Quick connector , pneumatic valve module and train braking system

The utility model relates to a rail vehicle's braking system field in order to solve the problem that pneumatic part received the installation space restriction to lead to the tube coupling difficulty, provides a quick connector, pneumatic valve module and train braking system. Quick connector, including casing, sealing member and collet chuck end, the casing includes the installation end, and theperiphery of installation end sets up the external screw thread, installation end and the inside intercommunication of collet chuck end, the inside of collet chuck end includes backstop portion, thesealing member sets up the collet chuck end is inside, the sealing member is located backstop portion with between the tip of collet chuck end. The pneumatic valve module includes pneumatic part, gascircuit board and a plurality of quick connector. The utility model discloses owing to adopt simple structure, simple to operate's quick connector, form the pneumatic valve module with quick connectorwith pneumatic part integra