Overturning ladder stand from spillway bottom hole radial gate hinge support to bottom hole radial gate

The invention provides a turnover ladder stand from a spillway bottom hole radial gate hinge support to a bottom hole radial gate, which comprises a fixing device fixedly mounted in the hinge support, a ladder stand device hinged to the fixing device, a locking device for locking the ladder stand device, and a safety rope with one end connected to the ladder stand device, the other end of the safety rope is connected to the hinged support or a pier wall on the side of the hinged support; the locking device comprises a first locking ring fixed on the ladder stand device, a second locking ring fixed on the pier wall and a locking piece; the fixing device, the ladder stand device, the locking device and the safety rope are arranged, when the bottom hole radial gate needs to be overhauled, a maintainer loosens the safety rope to enable the ladder stand device to rotate anticlockwise, the end of the ladder stand device is in lap joint with the radial gate supporting arm of the bottom hole radial gate, the maintain