Supporting and opening device for tail water gate of hydropower station

The utility model discloses a hydropower station tail water gate support opening device, which relates to the technical field of gate support and comprises a tail water gate, a support plate, I-shaped steel, a winch and a moving component. The moving assembly comprises a first sliding rail and a second sliding rail which are arranged below the supporting plate, a first transmission part arranged on the I-shaped steel and a first driving part connected with the first transmission part, and the first driving part is used for driving the first transmission part to move so that the I-shaped steel can move below the supporting plate to form a moving space; further, the tail water gate is driven by the winch to move upwards or downwards; the first driving piece is arranged to drive the first transmission piece to move, so that the two sets of I-shaped steel on the two sides of the supporting column are driven to move in the opposite direction, supporting can be provided for the supporting plate, and the tail water