High-ductility sound-absorbing cotton assembly

The utility model discloses a high-ductility sound-absorbing cotton assembly which comprises an outer frame, the outer frame is of a hollow structure, two sets of movable plates are arranged on the four walls of the inner side of the outer frame, a sound insulation pad assembly is arranged between the two sets of movable plates, and the sound insulation pad assembly comprises a sound insulation pad body and two sets of hole grooves formed in the four corners of the sound insulation pad body. The sound insulation pad body is of a hierarchical structure and is combined through a hot rolling technology, the sound insulation pad body is sequentially provided with non-woven fabric, a framework and a filling body filled in the framework from outside to inside, and the sound insulation pad assembly is fixed to the outer frame through a fixing structure. And the fixing structure comprises a positioning plate fixed on the outer frame and a locking bolt arranged at the front end of the positioning plate, so that when t