Rotary locking mechanism

The utility model discloses a rotary locking mechanism. The rotary locking mechanism comprises a fixed part and a rotary part rotationally connected to the fixed part. The rotating part is provided with an arc-shaped hole and a strip-shaped groove extending outwards along the side wall of one side of the arc-shaped hole, a spring bolt is installed in the strip-shaped groove in a sliding mode through an elastic element, one end of the spring bolt can be kept in the arc-shaped hole under the action of the elastic element, a positioning pin is fixedly installed on the fixing part, and one end ofthe positioning pin extends into the arc-shaped hole. In the locking state, the locating pin is limited at one end of the arc-shaped hole by the spring bolt, an unlocking assembly is installed on therotating component, the unlocking assembly is controlled to overcome the elastic force of the elastic element, the spring bolt slides into the strip-shaped groove, and limitation to the spring bolt isremoved. The beneficial ef