Torsion damper and vehicle

The invention discloses a torsion damper and a vehicle, and relates to the technical field of vehicles, the torsion damper comprises a damper shell, a first friction plate, a first disc body assembly, a second disc body assembly, a second friction plate and an elastic piece; a first friction face and a second friction face which are oppositely distributed in the axial direction are formed in the shock absorber shell. The first disc body assembly and the first friction plate are sequentially pressed towards the first friction surface by the elastic piece, and the second friction plate is pressed towards the second friction surface by the elastic piece; the first disc body assembly and the second disc body assembly are fixedly connected through a connecting piece, the torsion structure is clamped between the first disc body assembly and the second disc body assembly, the first disc body assembly is in circumferential limiting fit with the first friction plate and is in axial abutting fit with the first friction plate, and the second disc body assembly is in circumferential limiting fit with the second friction plate and is movably matched with the second friction plate in the axial direction. According to the torsion damper, the overall deviation direction and the deviation amount of the internal torsion structure are controllable, small deviation occurs, the axial collision risk of the torsion structure and the input shaft of the reduction gearbox is reduced, and abnormal sound is reduced.