Emergency braking system for parking of heavy-duty car on slope

The utility model relates to a slope-parking emergency braking system for a heavy-duty car, which solves the problems that the angle is too large when the heavy-duty car is parked on a slope, the parking braking force is insufficient, and the slope-parking braking fails due to faults. Comprising an air compressor, a dryer, a front axle air cylinder, a rear axle air cylinder, an EBS brake main valve, a front axle EBS brake module, an ABS electromagnetic valve, a rear axle EBS brake module, a wheel speed sensor, a diaphragm brake cylinder, an EBS trailer valve, an EBS controller, an emergency hill-holding switch, a brake pipeline and a circuit. According to the utility model, firstly, the hill-holding capability of the vehicle on the abrupt slope is improved, and vehicle sliding is prevented; and secondly, the system operation complexity is reduced, the operation process is simplified, and the safety of the whole vehicle is improved. The parking emergency braking is realized through a key, automatic releasing a