Transmission structure of arc extinguish chamber of high-voltage alternating-current circuit breaker

The utility model relates to a transmission structure of an arc extinguish chamber of a high-voltage alternating-current circuit breaker, which comprises a shell and a transmission mechanism, the transmission mechanism comprises a vertically-arranged insulating pull rod and two transversely-arranged transverse pull rods, and the lower end of the insulating pull rod is connected with a hydraulic spring mechanism for driving the insulating pull rod to move vertically. The two transverse pull rods convert vertical movement of the insulating pull rod into horizontal movement of the transverse pull rods through crank arms and connecting plates, contact seats are fixed to the outer walls of the left side and the right side of the shell, guide rings are installed in the contact seats, and the transverse pull rods penetrate through the guide rings to be horizontally and slidably connected with the contact seats. The end, located in the shell, of the transverse pull rod is hinged to one end of the connecting plate, gu