The mathematical model of closing skid and opening viscosity of CT-Ⅱ type spring operating mechanism is built

and the influence law of component sizes on the above phenomena is found through lots of tests and analysis which can provide useful ideas for optimizing component configuration and size

as well as maintenance.The method to avoid the above problem is that the design accuracy and manufacturing quality control should be strengthened

in addition to use the method of replacing the contact roller unit

and repairing junction plane.