Elastic damping connection iron structure, sleeper type locking installation device and conversion equipment

The utility model discloses an elastic damping connecting iron structure, a sleeper type locking installation device comprising the elastic damping connecting iron structure and sleeper type locking conversion equipment. The elastic damping connecting iron structure comprises a connecting iron body, a spring, an ejector rod and a nut. A groove is formed in the connecting iron body, the spring is located in the groove, the ejector rod is installed at one end of the spring and penetrates through the nut, and the nut is connected with the open end of the groove of the connecting iron body. When the spring is pre-tightened, the outer end face of the ejector rod is higher than the outer end face of the nut. The spring is additionally arranged in the connecting iron body, the spring is matched with the ejector rod, and when the spring is not in contact with the action plate, the spring supports the ejector rod to protrude out of the nut; when the action plate makes contact with the ejector rod, the elastic force of