Inner-supporting type spring gliding-proof reduction parking apparatus

The utility model provides an internal stay spring stop device for speed-down, relating to a railroad speed-down stop device which is the uniformly-spaced ground beam fixed under the braking rails and the steel rails. A plurality of the spring towing carriages in parallel are installed under the braking rails and steel rails as per uniform pitch. Such braking rails and the steel rails are available between two ground beams. Both ends of the spring towing carriage are equipped with the sym. tripping spring series. One end of the braking rail is provided with four-connecting lever transmission mechanism which is connected with the hand operated wrench via the drag link of which both ends are covered with the springs. This utility model has the advantages of simple structure, appropriate design, high reliability and free of maintainability, so that this stop device could be used to guard against the slip of the train for special line as well as that for regular lines, more particularly, the stop device is suitab