Steel dam bottom shaft flange connecting device

The utility model discloses a steel dam bottom shaft flange connecting device in the field of gates, which comprises a first hollow shaft and a second hollow shaft. A first outer flange and a second outer flange are fixed via outer ring bolts and respectively arranged at opposite ends of the first hollow shaft and the second hollow shaft, the first outer flange is fixedly connected with a first inner flange via inner ring bolts, the first inner flange and the first hollow shaft are welded together, and the outer diameter of the first inner flange is not larger than that of the first hollow shaft. The hollow shafts and the flanges are combined and connected into a bottom shaft, the problem of inconvenience of detachment and replacement for the bottom shaft and a hinge seat of an existing steel dam during installation and maintenance is solved, and the steel dam bottom shaft flange connecting device is applicable to steel dam gates using bottom shaft rotation to realize opening and closing of gate leaves.