Air chamber bracket assembly

The utility model discloses an air chamber bracket assembly, which belongs to the technical filed of mounting frames of heavy duty cars, and includes a camshaft assembly, as well as a knuckle frame body, an air chamber bracket and a steering arm, wherein one end of the knuckle frame body is a boss; the boss and the knuckle frame body form a groove; a through hole is formed in the groove; the camshaft assembly is mounted inside the through hole; the side end of the air chamber bracket is a positioning end; the positioning end of the air chamber bracket is connected with the boss of the knuckle frame body; and the steering arm is connected with the positioning end of the air chamber bracket. According to the utility model, an air braking system can be mounted on an extra-heavy off-road vehicle through the air chamber bracket assembly.