The invention relates to a railway parking brake control valve. The control valve comprises a control valve body, an exhaust valve chamber, an inflation valve chamber communicated with a train pipe main pipe through a dust collector and a one-way valve chamber capable of being communicated with the inflation valve chamber in a one-way mode are arranged in the control valve body, an inflation valvepiston is arranged in the inflation valve chamber, an exhaust valve seat and an exhaust valve piston are arranged in the exhaust valve chamber, the exhaust valve piston is respectively sealed on theexhaust valve seat and the control valve body in a sliding mode, the exhaust valve piston divides the exhaust valve chamber into an upper exhaust cavity, an outer exhaust cavity and a lower exhaust cavity, the control valve body is provided with an exhaust port communicated with the lower exhaust cavity and a breathing hole communicated with the upper exhaust cavity, and the inflation valve chamber is communicated with the outer exhaust cavity. The railway parking brake control valve can realize automatic inflation and deflation of the parking brake, so that accidents such as insufficient parking brake force and wheel scratching caused by uncertain factors such as leakage of an air brake system and unrelieved manual brake are avoided, and the safety of vehicle application is improved.
本发明涉及一种铁路驻车制动控制阀,包括控制阀阀体,控制阀阀体内设有排气阀室、通过集尘器与列车管主管连通的充气阀室及可与充气阀室单向连通的单向阀室,充气阀室内设有充气阀活塞,排气阀室内设有排气阀座及排气阀活塞,排气阀活塞分别滑动密封于排气阀座及控制阀阀体上,排气阀活塞将排气阀室分隔形成排气上腔、排气外腔及排气下腔,控制阀阀体上设有与排气下腔连通的排气口及与排气上腔连通的呼吸孔,充气阀室与排气外腔连通。本发明提供的铁路驻车制动控制阀可实现驻车制动器的自动充、排气,以避免因空气制动系统漏泄、人力制动未解除等不确定因素而造成的驻车制动力不足、车轮擦伤等事故,提高了车辆运用的安全性。
Railway parking brake control valve
一种铁路驻车制动控制阀
2020-04-28
Patent
Electronic Resource
Chinese
IPC: | B61H Bremsen oder andere Verzögerungseinrichtungen ausgebildet für Schienenfahrzeuge , BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES |