Precise brake disc device of military vehicle brake system

The utility model discloses a precision brake disc device of a military vehicle brake system, which comprises a brake clamp and a brake disc body, and the brake clamp is driven and controlled by a hydraulic system; the whole brake clamp is in an inverted-U shape. The two ends of the brake clamp are located on the two sides of the brake disc body respectively. A hydraulic channel is arranged in thebrake clamp; valve holes communicated with the hydraulic channel are formed in the inner sides of the two ends of the brake clamp respectively. Brake pistons are arranged in the valve holes in a sliding fit mode respectively, the outer ends of the brake pistons are located between the ends of the brake clamps and the side face of the brake disc body, a plurality of brake pieces are further fixedly installed at the outer ends of the brake pistons through fixing plates, and a plurality of heat dissipation grooves are formed in the surfaces, making contact with the brake disc body, of the brakepieces. In the same fixing