Hydroelectric power generation device

A hydropower generator comprising:

• a plurality of driving shafts arranged along a path through which a fluid flows;
• a plurality of blade assemblies respectively mounted on the plurality of driving shafts along a lengthwise direction of the plurality of driving shafts;
• a spinning supporter connected to rotatably support each driving shaft;
• and
• a power generator receiving a spinning force of the plurality of driving shafts and generating electricity,
• wherein each driving shaft comprises a pipe, and a coupling ring coupled to the pipe and having a shaft binding hole at an inner center thereof,
• wherein each blade assembly comprises at least one blade having a blade bracket in a blade portion, and a blade connecting member connected to the respective driving shaft and coupling with the blade bracket,
• wherein the blade connecting member comprises a bracket connector disposed at a center thereof to which the blade bracket is fastened, and a shaft binding protrusion protruding frontward and backward from the bracket connector and connected to the respective driving shaft, and
• wherein the blade bracket comprises a bracket coupling protrusion, the bracket connector comprises a bracket coupling groove in which the bracket coupling protrusion is inserted, the shaft binding protrusion comprises an uneven protrusion on an outer circumferential surface thereof, and the coupling ring comprises an uneven groove to be coupled with the uneven protrusion of the shaft binding protrusion on an inner circumferential surface of the shaft binding hole.