Gas spring manufacturers do fatigue test method

Life test method for air spring:

The gas spring piston rod downward by both ends of the connecting head is vertically arranged on the gas spring fatigue testing machine, boot the first loop record opening force and start power, second sec Zhanli and compression force loop recording Fl, Fz, F3, F4, and calculate the gas spring force and dynamic friction force and nominal elastic ratio.

The rigid locking gas spring should be locked in the secondary development state to detect its locking force. The measuring speed of the air spring life testing machine is 2mm/min, which makes the axial compressive force of the piston rod to produce the 1mm displacement is the lock force value.

We should do 3 cycles in the simulation under the condition of air spring testing elastic lock, and lock in the trip midpoint, measuring speed of gas spring life testing machine for 8mm/min, so that the piston rod of mobile 4mm for axial compression force for locking force.

Air spring life test:

The gas spring will do high low temperature storage performance according to the test method for the detection of Netlon wins, then the fixturing in gas spring life testing machine, testing machine control gas spring cycle under simulated working conditions, the cycle frequency is 10-16 /min, the whole test process gas spring cylinder temperature should not exceed 50 DEG C.

After 10000 cycles, the performance of the primary force was measured by the test method, and the results should be in accordance with the regulations after the 30000 cycle.

A, sealing performance - air spring control valve closed, the piston should have good sealing, to ensure that the piston rod can be locked in any position.

B, the cycle life - after high and low temperature storage performance of the test should be able to withstand the 3000 cycle life test, after the test of the nominal force attenuation should be less than 10%.