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The circuit breaker plays a key role in the protection and controlling of high voltage transmission and distribution network. The operating mechanism is one of the most important execution units and its reliability level directly relates to the security of grid. As a result of repeating operation in practice, plastic deformation occurs in the sleeve of circuit breaker operating mechanism, and even the sleeve slips axially and falls from institutions, which seriously reduces the reliability of the circuit breaker operating mechanism. In view of the lack of current research on the phenomenon of sliping of the sleeve in circuit breaker operating mechanism, the problem of axial slip of the sleeve has been studied and the kinematic model of circuit breaker operating mechanism has been established in this paper. The cause of axial slippage of the sleeve has been analyzed through ABAQUS finite element simulation platform. Finally, part of parameters at the hinge are optimized using Taguchi method to achieve the goal of reducing axial slippage of the sleeve.
