Crank arm grounding switch operation device

The utility model relates to a crank arm grounding switch operation device. The crank arm grounding switch operation device comprises a fixation support, a lock shaft sleeve, a lock tongue, a lock pressing spring, an operation shaft, a first crank arm, a second crank arm, a universal connector, a fan shape board, a contact switch, a sliding block, a bending board, and a pressing board, wherein a first through hole is disposed in a rear side board of the fixation support, a convex bench is disposed on the inner surface of the rear side board, a second through hole is disposed in a front side board, a stopping groove is disposed on the convex bench; the front end of the operation shaft is disposed in the second through hole, a blind hole is disposed on the rear end of the operation shaft, a linkage groove is disposed on the blind hole, the rear end of the lock shaft sleeve is connected on the first through hole, the front end of the lock shaft sleeve is disposed in the blind hole, the external wall of the lock shaft sleeve is linked with buttons, and the lock pressing spring is mounted between the bottom part of the blind hole and the front end of the lock shaft sleeve. The rear door of the crank arm grounding switch operation device can be opened only when the grounding switch is disconnected, and the grounding switch operation device is not allowed to be operated if the rear door is open, so that the safety of a worker is guaranteed. If the device is in failure and can not be open, maintenance can be carried out by opening the rear door after dismounting the lock tongue.