Warped plate type air door locking device for coal mine

The seesaw type air door locking device for the coal mine comprises a base, a first sleeve and a second sleeve are fixedly connected to the two sides of the top of the base respectively, movable cavities are formed in the first sleeve and the second sleeve respectively, and a first heavy hammer and a second heavy hammer are connected into the two movable cavities in a nested and sliding mode respectively. The top of the first heavy hammer and the top of the second heavy hammer are both fixedly connected with first traction rings, the two first traction rings are both connected with first oil wire ropes, the position, located between the first sleeve and the second sleeve, of the top of the base is fixedly connected with a fixing frame, and a fixing shaft is arranged at the position, close to the top, of the fixing frame. The whole structure is stable in connection, easy to operate, high in practicability, easy to machine and manufacture, low in use cost, free of maintenance and capable of being repeatedly use