This invention provides an emergency braking device for preventing
derailment of electric passenger vehicles, relating to the field of braking technology. It includes a top plate, a connecting seat fixed to the lower side of the top plate, a
line array camera fixedly mounted on the front side of the connecting seat, and extension arm structures on both sides of the connecting seat. An air tank located behind the connecting seat is fixed to the lower side of the top plate. The two extension arm structures, on the side furthest from the connecting seat, are outward-pointing and tilted forward and downward. The extension arm structures cause the connected sliding arm to move the
storage tank and connecting seat towards the wheel. After the
solenoid valve is opened, the gas in the air tank pushes the
brake pads towards the wheel. During the friction between the
brake pads and the wheel, the high-expansion
alloy balls expand, further pressing the
brake pads against the wheel. Meanwhile,
carbonyl iron powder carried by the gas rubs against the two
grinding wheels and the wheel section of the brake wheel, causing the wheel section of the brake wheel to extend into the inner side of the rail, thus achieving braking and preventing
derailment.