Electrical mining locomotive's pneumatic braking device and electrical mining locomotive

The utility model provides an electrical mining locomotive's pneumatic braking device and electrical mining locomotive. This electrical mining locomotive's pneumatic braking device has first switching-over valve, second switching -over valve and two sets of above checking cylinder, wherein: form the braking route between first switching -over valve and the checking cylinder, and the route is alleviated in formation between first switching -over valve and the checking cylinder, the setting of second switching -over valve is in the braking route, and second switching -over valve has the gas outlet more than two, and each gas outlet is connected with the checking cylinder of corresponding group respectively, and second switching -over valve can be controlled the intercommunication between the checking cylinder of each gas outlet and corresponding group and cut off. The utility model provides a braking can be realized to electrical mining locomotive's pneumatic braking device under the circumstances of partial ch