Fastening device capable of preventing gantry crane walking rail from rolling over

The utility model discloses a fastening device capable of preventing a walking rail of a gantry crane from rolling over, which comprises a base fixed with a sleeper through a long nail, a first sliding groove is arranged in the middle of the upper end face of the base, a bolt used for fixing the walking rail is arranged in the first sliding groove, and second sliding grooves are respectively arranged on two sides of the first sliding groove. A sliding base is arranged on the bolt in the first sliding groove in a penetrating mode. Sliding blocks used for being embedded into the second sliding grooves are arranged on the two sides of the bottom of the sliding base correspondingly. And a slope surface attached to the surface of the walking rail is arranged on the middle side of the bottom ofthe sliding seat. The utility model aims to provide the fastening device which firstly fixes sleepers of the track, can clamp the left end and the right end of the walking track of the gantry crane, and locks the top surface