The invention relates to a pneumatic brake valve of 21MPa. A brake pipe nozzle is arranged in an air inlet cavity of a casing, an exhaust hole of a piston communicates with a brake cavity, a brake cavity spring is mounted on the piston in a sleeving manner, and an air inlet valve seat is mounted on the brake cavity spring in a sleeving manner; an air inlet valve is positioned on the outer end surface of the air inlet valve seat, an exhaust valve is positioned in an exhaust cavity of the casing, and a screw plug is mounted on the air inlet valve in a sleeving manner; a pressure relief spring is mounted in an exhaust valve assembly; a pull rod is mounted in center holes of spring seats and a center hole of the pressure relief spring, and a spherical head of the pull rod is matched with a spherical pit in the end surface of one end of the exhaust valve; snap rings are mounted between the pull rod and the spring seats; the spherical surface of one end of the pull rod is matched with the spherical pit in the exhaust valve; one end of a pressure head is positioned in the casing and is mounted on the pressure relief spring in a sleeving manner. According to the pneumatic brake valve disclosed by the invention, different operating force is set for products, so that required brake pressure is obtained; nitrogen enters the brake cavity to be decompressed, and then is output to a brake device; therefore, braking is completed, and the purpose of judging whether the braking speed is high or low according to the length of air inlet time.
Pneumatic brake valve of 21MPa
06.01.2016
Patent
Elektronische Ressource
Englisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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