Train braking device

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 13/36 (2006.01) B60T 13/68 (2006.01) B61H 11/06 (2006.01)

Patent

CA 2731570

To provide a train braking device including a controller that controls a brake cylinder pressure acting on a brake cylinder based on a service brake command or an emergency brake command, the train braking device includes a supply valve AMV 20 for supplying compressed air to the brake cylinder and an exhaust valve RMV 21 for adjusting a pressure of the supplied compressed air. The controller includes an electromagnetic-valve drive circuit la, which includes a first switch circuit that a first switch SW1 for slide control is connected in parallel to ends of a serially connected circuit of a first switch SW2 for emergency brake and a first switch SW3 for service brake control with its one end being connected to a circuit power supply P and the other end being connected to the supply valve AMV 20, and a second switch circuit that a second switch SW4 for slide control is connected in parallel to ends of a serially connected circuit of a second switch SW5 for emergency brake and a second switch SW6 for service brake control with its one end being connected to the first switch circuit and the other end being connected to the exhaust valve RMV 21.

Linvention concerne un dispositif de freinage de train comprenant une section de commande permettant de commander une pression de cylindre de frein agissant sur un cylindre de frein selon une instruction de freinage de service et une instruction de freinage d'urgence. Le dispositif de freinage de train comprend une valve d'alimentation AMV20 permettant d'alimenter le cylindre de frein en air comprimé et une valve d'échappement RMV21 permettant de réguler une pression de lair comprimé fourni. La section de commande comprend un circuit dentraînement délectrovalve (1a) comprenant un premier circuit de commutation dans lequel un premier commutateur anti-patinage SW1 est relié en parallèle aux deux extrémités d'un circuit de connexion en série d'un premier commutateur de frein d'urgence SW2 et dun premier commutateur de commande de frein de service SW3, une extrémité étant reliée à une alimentation en énergie du circuit P et lautre extrémité étant reliée à une valve dalimentation AMV20, et un second circuit de commutation dans lequel un second commutateur anti-patinage SW4 est relié en parallèle aux deux extrémités dun circuit de connexion en série d'un second commutateur de frein durgence SW5 et dun second commutateur de commande de frein de service SW6, une extrémité étant reliée au premier circuit de commutation et lautre extrémité étant reliée à la valve déchappement RMV21.

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