Днепропетровский Национальный Университет Железнодорожного Транспорта Имени Академика В.Лазаряна
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A parking brake of a carriage comprises a housing, which houses a shaft, at one end of which a hand wheel is secured and at the other end of the shaft a thread is made, which is not self-locking and is connected to a nut in the housing, which is axially movable, and a rotary double-arm lever connected to brake pads. At the end of the hand wheel a lock of backward motion is mounted which is made in the form of a ratchet rigidly mounted on the shaft and interacting with an uncoupling lever. Between the hinge of linkage and nut a connecting lead is located.