Hydraulic locking mechanism for truck cab locking structure

The utility model discloses a hydraulic locking mechanism for a truck cab locking structure, which comprises a shell, a locking groove arranged in the middle of the shell, a reinforcing plate arranged at the bottom end in the shell, a hydraulic oil cylinder arranged at the lower end of one side, close to the reinforcing plate, in the shell, and a support frame arranged at the upper end of the reinforcing plate. A first convex ring and a second convex ring are arranged on the two sides of the upper end of the supporting frame correspondingly, first connecting shafts are arranged in the middles of the first convex ring and the second convex ring correspondingly, the bottom end of a first bearing rod is connected with the first connecting shafts, a first movable shaft is arranged in the middle of the first bearing rod, and a lock hook connected with the first connecting shafts in a matched mode is arranged on the other side of the upper end of the supporting frame. The lock hook is connected with the second bear