Grounding and isolating interlocking mechanism for three-station vacuum circuit breaker

The utility model relates to a grounding and isolating interlocking mechanism for a three-station vacuum circuit breaker, which comprises a rack, a grounding operation shaft and an isolating operationshaft, and further comprises a grounding positioning disc, a grounding switch-off positioning plate, a switch-on positioning plate, a switch-off positioning plate, a switch-on positioning plate, a switch-off positioning plate and a three-station vacuum circuit breaker, the isolation positioning disc is in linkage fit with the isolation operation shaft and is provided with an isolation switching-off positioning groove and a grounding switching-off positioning cam; one end of the interlocking support is hinged to the rack through a first hinge column, the other end of the interlocking support is connected with an interlocking block, and the interlocking block is located between the grounding positioning disc and the isolation positioning disc. Interlocking of the grounding operation shaft and the isolation operatio