Gap measuring gauge of upper frame and lower frame of hydraulic fan-shaped section

The utility model relates to a gap measuring gauge of an upper frame and a lower frame of a hydraulic fan-shaped section, which comprises a measuring arm, a hoisting hole, two support frames, two fastening blocks, a reference block, two upper frame reference blocks and a lower frame reference block, wherein the measuring arm is I-shaped steel provided with a work surface, one end of the measuring arm is provided with the hosting hole, the two support frames are arranged at one end of the work surface of the measuring arm, the two fastening blocks are respectively fixed on the outer end surfaces of the two support frames, bolt holes are formed on the fastening blocks, the reference block is arranged at the other end of the work surface of the measuring arm, the two upper frame reference blocks are arranged on the upper frame, and correspond to the reference block arranged on the work surface of the measuring arm, and the lower frame reference block is arranged on the lower frame, corresponds to the fastening b