Vehicle-mounted device of anti-collision system of train

The utility model provides a train anti-collision system vehicle-mounted device which comprises an anti-collision relay, a normally open contact of the anti-collision relay is connected into an emergency braking loop of a train and used for cutting off or closing the emergency braking loop of the train to enable the train to apply or relieve emergency braking, and a coil positive electrode of the anti-collision relay is connected with a train power supply bus; and the train bottom jumper device is arranged on the side face of the bottom of the train and connected with a coil of the anti-collision relay, the train bottom jumper device is used for interacting with the trackside stop lever, and when the train passes through the section where the trackside stop lever is arranged, the trackside stop lever hangs off the train bottom jumper device. The normally open contact of the anti-collision relay is connected to the train emergency braking loop, when the train runs in a manual driving mode, once the train excee