Safe cooling device of car braking

The utility model discloses a safe cooling device of car braking, including brake disc, brake caliper, braking block group, hydro -cylinder, uide pin and axle, axle and brake disc welding, the uide pin is fixed to be set up in the axle upper end, and brake caliper sets up in the top of uide pin, and brake caliper transversely is equipped with a hydro -cylinder, is equipped with seal ring on the piston of hydro -cylinder and hydro -cylinder sliding connection's the lateral wall, brake caliper is last be equipped with one protruding, the uide pin passes protrudingly to be connected with the axle, rotates the pincers body and goes up the both sides of relative brake disc and be equipped with a set of braking block group respectively, sets up at the braking block group of the brake caliper left end braking block group of giving first place to, sets up to be following at the braking block group of brake caliper right -hand member to apply the brake the block group, the brake caliper who follows the top of braking