What are the factors that affect the air spring on vibration equipment?

1. The influence of rubber material stiffness on the first-order * * * vibration frequency of the system. The experimental results show that the stiffness of rubber airbag material has a great influence on the stiffness of air spring, which is the reason for the difference between the theoretical value and the experimental value of air spring stiffness. The greater the stiffness of rubber airbag material, the greater the stiffness of air spring and the higher the first-order vibration frequency. Results The small working frequency of the system was improved. Therefore, the rubber airbag vibration isolation system should reduce the material stiffness and natural frequency, so that the bearing capacity of the air spring isolator can be fully preserved and the small working frequency of the system should be as low as possible.

2. When the vibration table vibrates horizontally, the rubber material of the reed bag is much more rigid, and the rubber air spring has a soft structure, which has a comprehensive vibration isolation effect of axial, lateral and rotary steering. When the mechanical vibration table vibrates horizontally, the rubber material of the reed bag is much more rigid.

3. Set a throttle hole between the air spring and the additional air chamber. When air flows through the orifice, it absorbs part of vibration energy due to resistance, which plays a role in damping and shock absorption. The size of orifice not only affects the stiffness and natural frequency of the system, but also mainly affects the damping of the system.

The stiffness of the system decreases with the increase of throttle opening, and the damping first increases and then decreases with the increase of throttle opening. The increase of additional cavity volume will reduce the stiffness of the system and increase the damping ratio. The increase of excitation frequency will increase the stiffness of the system and reduce the damping ratio of the system, and the change of static load has little effect on the vibration characteristics of the system. Air spring has nonlinear characteristics, and its characteristic line can be designed into an ideal curve according to needs.

The stiffness of air spring changes with the change of load, so the natural vibration frequency remains unchanged under any load, which makes the spring device have almost the same performance.

The stiffness of the air spring can be selected by changing the volume of the additional air chamber as required, and can be selected to be very low.