Lock pin driving mechanism and cabin door locking device

The invention relates to a lock pin driving mechanism and a cabin door locking device, and belongs to the technical field of cabin door locks.The cabin door locking device comprises a lock pin, a lock hole, the lock pin driving mechanism and an operation mechanism, the lock pin is provided with a locking position allowing the lock pin to be inserted into a lock hole in a door frame and an unlocking position allowing the lock pin to be pulled out of the lock hole, and the lock pin can rotate between the locking position and the unlocking position; the driving rod piece is used for connecting the driving swing arm piece and the lock pin, one end of the driving rod piece is hinged to the swing end of the driving swing arm piece to form a first hinge point, and the other end of the driving rod piece is hinged to the non-locking end of the lock pin to form a second hinge point; and the elastic force application piece is used for enabling the lock pin to have a trend of being pulled out of the lock hole. According