The air spring shock absorber is composed of rubber bag, upper snap ring, upper end cover, lower snap ring, air bag spring piston, rubber buffer block and О-shaped rubber sealing ring. The upper cover of the airbag spring is connected to one end of the rubber bladder, the upper hoop ring presses the rubber bladder against the circumference of the upper cap cover, and the annular groove on the inner hole ring of the upper cover has a О-shaped rubber sealing ring, and it fits with the piston rod of the shock absorber to seal the gas.

The bumper is mounted on the upper cover, and when the cab falls at extreme speed, the upper end of the shock absorber is in soft contact with the buffer block, reducing the chance of the hydraulic shock absorber being broken. The airbag spring piston is designed with ventilation holes for filling and discharging the airbag with the outside gas. The upper end cover and airbag spring piston together with the rubber capsule and shock absorber form a confined space. Through the inflation and deflation of the airbag spring, the upper end cover moves relative to the lower end cover, and the stiffness of the airbag shock absorber is changed through the up and down expansion and contraction of the airbag.

So how does it work? When the force acts downward on the shock absorber, the damping rod moves downward, and the damping medium in the damping chamber will flow upward along the gap around the damping block, thereby playing the role of damping shock absorption and reducing the amplitude, and after the force acting on the shock absorber disappears, the damping rod moves upward, and the medium in the damping chamber will flow down again along the gap around the damping block to achieve the effect of reducing vibration and reducing amplitude. Therefore, the variable damping force characteristics can make the vehicle obtain better comfort under different working conditions.