200KN 300KN Stiffness and Gas Tightness Testing Machine for Air Spring

Introduction:

Stiffness is relfect bearing capacity of air spring under static condition, the larger value of static stiffness, the larger the value of loading. The main factor of influence to stiffness of air spring is displacement, loading and internal pressure, result is different by different testing methods.

Testing standards air spring

• GB/T13061 testing methods for air spring used in automobile suspension
• TB/T2841-2010 testing methods for air spring used in rolling stock
• Testing and researching for air spring used in CRH, track traffic, passenger train, subway train, light passenger train, magnetically levitated train, large bus, and other vehicle.

Testing content of air spring:

• vertical static stiffness testing(ampltitude, loading),
• vertical dynamic stiffness(amplititude, loading),
• static stiffness – curves of loading, static stiffness-amplitude curve,
• nominal stiffness value, ultimate stiffness value,
• pressure loading capacity, loading-presure curve,
• steadibiltity stability of pressure-loading,
• vertical damped coefficient, vertical fatige.