Assembly of brake cylinder body and anti-superposition valve

The invention provides an assembly of a brake cylinder body and an anti-superposition valve. An inner cavity of the brake cylinder body is divided by a middle body, the cylinder body parts located on the two sides of the middle body are a service brake cylinder body and a parking brake cylinder body respectively, a service brake cylinder piston cavity is formed by the service brake cylinder body and the middle body, and a parking brake cylinder piston cavity is formed by the parking brake cylinder body and the middle body. A slider cavity, a service brake air supply channel, a parking brake air supply channel and an extending parking brake air supply channel located in the middle of the slider cavity are arranged in a valve body of the anti-superposition valve, the service brake air supply channel and the parking brake air supply channel are communicated with the slider cavity respectively, a slider is arranged in the slider cavity, when the slider is located at one end of the slider cavity, the parking brake air supply channel and the extending parking brake air supply channel are communicated, and when the slider is located at the other end of the slider cavity, the service brake air supply channel and the extending parking brake air supply channel are communicated. The anti-superposition valve is connected to a platform of the brake cylinder body. The assembly is compact in structure, convenient to machine and capable of effectively avoiding superposition of service brake force and parking brake force.