Air spring and height and rigidity decoupling method of air spring

The invention discloses a height and rigidity decoupling method for an air spring, which comprises the following steps: according to the height and rigidity adjusting range required to be adjusted by the air spring, adopting two independent air chambers with adjustable rigidity and different rigidity adjusting ranges, connecting in series in an up-and-down layout form, and achieving different air pressure combinations through the air intake and exhaust volumes of the two air chambers; and the height can be changed under the fixed-rigidity condition and the rigidity can be changed under the fixed-height condition. The invention further discloses a height and rigidity decoupling air spring which comprises two independent air chambers with rigidity and height capable of changing along with air pressure, the two air chambers are connected in series up and down, the vertical deformation size of one air chamber is larger than that of the other air chamber, the radial deformation size of the other air chamber is lar