Dual locking structure of salsa cap of railroad car

摘要

The present invention relates to a double locking structure of a salsa box cap of a railroad car, and a railroad car in which a non-continuous single locking projection (3) is formed on the outer circumferential surface of the cylindrical body (2) so as to seal the injection pipe (5) of the salsa box. In the salsa cap of, the locking projection (3) and the second locking projection (4) to be mutually discontinuously formed on the upper surface of the outer peripheral surface of the body (2) protruding jaw (5a) of the injection pipe (5) And is to be doubled.