Rerailer for small travelling crane

The rerailer comprises a fixed seat, a supporting seat, a jacking jack, a transverse moving jack and an adjusting seat, the supporting seat is installed on the fixed seat in a sliding mode, at least one jacking jack is installed on the top of the supporting seat, a plurality of positioning holes are formed in the fixed seat in the moving direction of the supporting seat, and the transverse moving jack is installed in the positioning holes. A plurality of positioning holes are formed in the supporting seat at intervals, a plurality of protruding positioning blocks are arranged at the bottom of the adjusting seat, the positioning blocks are installed in the corresponding positioning holes in a matched mode, a transverse moving jack is installed at the top of the adjusting seat and located on one side of the supporting seat, and an ejector rod of the transverse moving jack pushes the supporting seat to slide relative to the fixing seat. The beneficial effects of the utility model are that: compact structure, can