Dongkai Shuobang believes that the air spring shock absorber is one of the common components on the truck. It has the functions of shock absorption and noise reduction at the same time, which can effectively limit the amplitude, avoid resonance and prevent impact. Let's find out together.

Dongkai Shuobang believes that the air spring shock absorber is composed of a rubber bag, an upper snap ring, an upper end cover, a lower snap ring, an air bag spring piston, a rubber buffer block and a shaped rubber sealing ring. The upper cover of the spring is connected to one end of the plastic bag, the upper hoop buckles the plastic bag around the upper cover of the airbag, and the annular groove on the inner hole ring of the upper cover is provided with a rubber sealing ring, which cooperates with the piston rod of the shock absorber to seal gas.

Dongkai Shuobang believes that the buffer block is installed on the upper cover. When the cab drops rapidly, the upper end of the shock absorber is in soft contact with the buffer block, which reduces the probability of damage to the hydraulic shock absorber. A vent hole is designed on the spring piston of the airbag for charging and discharging the airbag and the outside air. The upper end cap, airbag spring piston, plastic bag and shock absorber together form an enclosed space. The upper end cap is moved relative to the lower end cap by the inflation and deflation of the airbag spring, and the stiffness of the airbag shock absorber is changed by the up and down expansion and contraction of the airbag.

Dongkai Shuobang believes that the working principle of the air shock absorber: when the force acts on the shock absorber downward, 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 a role in Damping and reducing the effect of amplitude. After the force acting on the shock absorber disappears, the damping rod moves upward, and the medium in the damping chamber will flow downward again along the gap around the damping block, so as to achieve the effect of vibration reduction and amplitude reduction. Therefore, the characteristics of variable damping force can make the vehicle obtain better comfort under different working conditions.

Dongkai Shuobang believes that rubber air springs are also called air suspensions. Its structure is similar to that of a tubeless tire, consisting of an inner rubber layer, an outer rubber layer, a ply, and a bead ring. Air spring device: the characteristics of

(1) The stiffness can be selected at a lower value, which has higher flexibility, reduces the natural vibration frequency of the vehicle, and improves the ride comfort of the vehicle.

(2) With nonlinear characteristics, it can be designed to have an ideal elastic characteristic curve according to the needs of vehicle vibration performance.

(3) Dongkai Shuobang believes that since the stiffness of the air spring increases with the increase of the load, it can ensure that the vibration frequency of the train under no-load and heavy-load conditions is basically the same, so as to ensure the running stability of the train under different load conditions. resemblance.

(4) By using the height valve together, the height of the vehicle floor can be kept basically the same under different loads, so as to ensure that the height of the vehicle floor and the platform change within a small range, and to ensure that the vehicle does not exceed the dynamic envelope when running.

(5) Dongkai Shuobang believes that there is a suitable throttle hole between the air spring and the additional air chamber. When the vehicle vibrates, the air going in and out of the air spring is throttled here, so that the air spring can reduce the vibration.

(6) Dongkai Shuobang believes that the air spring has good high-frequency vibration absorption and sound insulation performance.

(7) It can bear loads in three directions, so that the vehicle has certain flexibility in all directions, which improves the running performance of the train.