METHOD FOR PREVENTING WHEEL PAIRS FROM SLIPPING WHEN BRAKING RAILWAY CAR Russian patent published in 2022 - IPC B61C15/08 B60T8/00 

FIELD: railway transport.

SUBSTANCE: invention relates to the field of rail vehicles, in particular to anti-skid systems. A method for preventing wheel pairs from slipping when braking a railway car is characterized by that optoelectronic sensors detect a change in the intensity of a luminous flux relatively to a reference value during the rotational movement of a wheel pair. Then, the luminous flux is converted into pulse signals with a repetition frequency directly proportional to the angular velocity of the wheel pair. Pulse signals are transmitted to an input of a control module of an electronic unit, located in a brake equipment unit, where deviations of the repetition frequency of pulse signals from the reference value are calculated. Based on the calculated deviation, time of air discharge from a brake cylinder and duration of a single exposure to a three-position relief valve are calculated. Then, by giving a control command from the electronic unit, the three-position relief valve is opened, thereby discharging air from the brake cylinder into the atmosphere, thereby preventing slipping of wheel pairs. Next, compressed air is supplied from the brake equipment unit to brake cylinders to a normal level.

EFFECT: reduction in the wheel pair skid during braking of a railway car.

1 cl, 2 dwg