The spring operating mechanism which adopts cylinder coil spring as energy storage components has been developed and applied for many years in China.Opening and closing operating springs are important influencing factors on opening and closing speed and key components in spring operating mechanism.The closing and opening operation has been conducted 10

000 times for typical opening and closing operating spring through the simulation test equipment.Though the characteristic parameters of operating spring such as operating spring shape dimension

compression load

opening and closing speed

opening and closing time were measured

and the relation curves between the characteristic parameters of operating spring and operation time were obtained.The test results can be applied to condition-based maintenance of the operating spring.