Crane track lifting device

The utility model relates to a crane rail lifting device which is provided with a supporting cross arm, rail lifting supporting columns are arranged at the left end and the right end of the supporting cross arm respectively, a rail lifting hook A and a rail lifting hook B are arranged between the rail lifting supporting columns located on the two sides, the rail lifting hook A and the rail lifting hook B are correspondingly arranged, and the distances between the rail lifting hook A and the rail lifting hook B and the ends of the corresponding sides are kept the same. The upper portion of the rail lifting hook A and the upper portion of the rail lifting hook B are detachably connected with the supporting cross arm, a connecting plate is connected to the position, close to the lower portion, of the middle of the rail lifting hook A and the position, close to the lower portion, of the middle of the rail lifting hook B, and the two ends of the connecting plate are detachably connected with the rail lifting hook