High tension switchgear isolator blocking device

The utility model discloses a high tension switchgear isolator blocking device belongs to power supply unit technical field, and it includes the outer ring gear of fixed mounting in disc mechanism, follows outer ring gear radially be equipped with a push rod, push rod slidable mounting is on a mount, fixed mounting has a support frame on the mount, an articulated installation pendulum rod on the support frame, be equipped with a slide rail on the pendulum rod, slidable mounting has a slider on the slide rail, the one end of push rod be equipped with with the arc tooth piece of outer ring gear looks adaptation, the other end is worn out mount and articulated install in on the slider, be equipped with the messenger on the push rod the compression spring of arc tooth piece and the separation of outer ring gear, during the breaker closing state, turning arm on the circuit breaker with the pendulum rod offsets and leans on just arc tooth piece meshes with outer ring gear mutually. The utility model discloses operation position control is accurate, and safe and reliable has avoided the maloperation, and the wide application is in power supply system.