High-voltage circuit-breaker transmission device

The utility model relates to a transmission device of an intermediate and high voltage breaker of a piece of power transmission and transformation equipment. The transmission device comprises a transmission frame (2), a transmission shaft (6), an inner crank arm (8) and an outer crank arm (3), etc. wherein, one end of the inner crank arm (8) is articulated with a vertical pull rod of a high voltage breaker and the other end thereof is arranged at one end of the transmission shaft (6); the transmission shaft (6) is arranged on the transmission frame (2) which is fixed to a support plate (1) of the high voltage breaker; the middle part of the outer crank arm (3) is arranged at the other end of the transmission shaft (6); the two ends of the outer crank arm (3) are articulated with a level pull rod of the high voltage breaker. A B-phase operation mechanism when being operated can drive the inner crank arm (8) and the inner crank arm (8) can drive the outer crank arm (3) through the transmission shaft (6) and fur