FIELD: transport.
SUBSTANCE: invention is designed to control speed of rolling stock cuts on gravity humps. Braking device comprises control equipment located in rail, and arranged in support axis, on which to turn there is a rotary brake key interacting with elastic element. Braking device is equipped with a solid of revolution, and elastic element is made in form of spring with interference on axis and connected by one end with key. In support there is locking surface groove, in which there is a solid of revolution to get in contact with surface and axle.
EFFECT: simplified design, broader functional capabilities and higher operational characteristics.
4 cl, 3 dwg
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