Braking module applicable to passenger train with center sill on underframe

The invention relates to a braking module applicable to a passenger train with a center sill on an underframe. A life air cylinder, a working air cylinder, a sub air cylinder, a distribution valve, a gas control unit and a gas pipe are lifted under lifting frame; the gas control unit is fixed in a protective cover; the protective cover is fixed under the lifting frame; the lifting frame is formed by a longitudinal beam and a cross beam, which are welded with each other; the middle part of the longitudinal beam is fixed under the underframe of the train through a middle lifting seat; the upper part of the middle lifting seat is welded and fixed together with the underframe of the train; a gap allowing the longitudinal beam of the lifting frame to be inserted is formed in the bottom end of the middle lifting seat; a transitional backing plate which stretches over the gap is fixed at the bottom end of the middle lifting seat through a bolt; and the longitudinal beam falls on the transitional backing plate and is fixed together with the transitional backing plate through a bolt. According to the invention, as a braking system of the passenger train with the center sill is designed in a modularized way and passes production verification, the product quality is improved, the production efficiency and enterprise economic benefit are increased, and market adaptability capacity of the product is also enhanced.