Lockset limiting device of container transportation semitrailer

The utility model discloses a container transportation semitrailer lock limiting device which comprises a frame and container corner fittings, one end of the frame is provided with an opening, and the inner side wall of the opening is fixedly connected with a connecting plate. According to the utility model, when the lock rod is in a locking state, the lock rod and the gear rod are located between the first limiting flange and the first limiting plate, the first limiting plate is always in a closed state under the action of gravity, and the gear rod is clamped through the clamping groove so as to realize a limiting effect; the blocking rod is limited between the first limiting flange and the second limiting plate downwards through the second limiting plate in the self-weight state, so that the locking and limiting functions of the lock are further improved, the structure is simple, safety, reliability, economy and practicability are achieved, the product universality is improved, the use cost is low, the manu