Hydraulic control unit main body device

The utility model relates to a hydraulic unit main body device, and in particular relates to a hydraulic control unit main body device integrated with four-plunger structure of a brake master cylinder. The hydraulic control unit main body device is structurally characterized by comprising a main body of cuboid structure and a brake master cylinder, wherein the interior of the main body is of four-plunger structure consisting of four plungers that are arranged side by side into two lines, the two lines of plungers communicate with a motor installation hole and are symmetrical relating to the motor installation hole, and the four plungers in the four-plunger structure are identical in type; the brake master cylinder are directly fixed on the main body or fixed on the main body by a master cylinder container which is hollow, a fixing device, namely a clamp spring or a thread, is arranged in the master cylinder, the brake master cylinder is arranged in the master cylinder container by the fixing device, and one end of the brake master cylinder or the master cylinder container is provided with four bolt holes. According to the hydraulic control unit main body device, the brake master cylinder is integrated to the main body, so that the structure of the auxiliary brake system is simplified, and cost is saved; meanwhile, the four-plunger structure is adopted, so that pressure supplying capacity is improved.