PNEUMATIC BRAKING SYSTEM FOR RAILWAY TRANSPORT WITH BRAKE RELEASE SOLENOID VALVE Russian patent published in 2020 - IPC B60T13/68 B60T17/22 B60T13/66 B60T15/14 

FIELD: transport machine building.

SUBSTANCE: pneumatic braking system comprising a pneumatic line for supplying braking pressure to at least one brake cylinder and including pneumatic inlet solenoid valve and pneumatic outlet solenoid valve, configured to increase and reduce, respectively, pneumatic pressure on said at least one brake cylinder, said valves controlled by electronic control unit (13, 113); solenoid valve (18) for releasing brakes, made with possibility of complete unloading with power on of pneumatic pressure from at least one brake cylinder, regardless of state of said inlet and outlet valves; and emergency electric circuit (20), on which in normal operation mode there is voltage (V_E), falling when emergency braking is activated. Solenoid valve (18) of brakes release is connected to emergency electric circuit (20) by means of one controlled switch (21), so that brake release solenoid valve (18) can be energized by controlled closing of said switch (21) with supplied power supply (V_E) to said emergency electric circuit (20) and brake release solenoid valve (18) is switched off, when said switch (21) is open and when voltage (V_E) on emergency circuit (20) falls, regardless of state (position) of said switch (21).

EFFECT: technical result is recovery of brake function of pneumatic line in emergency condition with faulty electric circuit or faulty circuit.

1 cl, 4 dwg