Wheelchair

The wheelchair is a foldable wheelchair, and the folding mode of the wheelchair is that the middle of a wheelchair chair body serves as a folding point, two supporting armrests get close to each other, the wheelchair comprises the chair body, chair wheels and chair wheel shafts, the chair wheel shafts are rotationally connected to the chair body, the chair wheels are connected with the chair wheel shafts, and the chair wheels and the chair wheel shafts are of a detachable structure; the axial position of the chair wheel shaft on the chair body is adjustable, and the outer end face of the chair wheel shaft is contracted to the inner side of the folding chair body by adjusting the chair wheel shaft separated from the chair wheel. After the chair wheel and the chair wheel shaft are detached, the assembly locking of the chair wheel shaft on the chair body (that is, the bearing seat or the gear box moves on the chair body) is released, and the chair wheel shaft can be retracted to the inner side of the outer conto