Auxiliary tool for separating coupling of vertical water-turbine generator set

The utility model relates to a coupling separation auxiliary tool for a vertical water-turbine generator set, which belongs to the technical field of water-turbine generator set structures and comprises a baffle plate, a nut and a screw rod matched with the nut. By means of the handle arranged on the screw rotating disc, the screw can be rotated in a more labor-saving mode, and flange separation is completed; the gasket on the baffle can effectively reduce abrasion of the tail end of the screw to the baffle when the tail end of the screw reaches the baffle, and the service life is prolonged; the opening clamp spring is arranged above the nut, so that the screw rod can abut against threads through the clamping teeth without falling after reaching a target position, and the non-return function is achieved; the baffle and the nut are fixed to the upper flange and the lower flange of the coupling respectively, the screw abuts against the baffle on the other side, separation force is generated between the flanges,