Sectional type vertical-axis wind power generation device

The utility model discloses a sectional type vertical-axis wind power generation device which comprises a vertically-arranged rotating shaft, and a horizontally-arranged fan blade mechanism is connected to the rotating shaft in the radial direction. A main transmission shaft is fixedly connected below the rotating shaft; the bottom of the main transmission shaft is connected with a horizontally-arranged rotary disc. The outer edge of the rotating disc is in transmission connection with a rotating body, and the rotating body is used for being in transmission connection with a rotor of a generator to enable the generator to generate electricity. Wherein the main transmission shaft is formed by butting a plurality of sections of sub-transmission shafts through connecting pieces; each connecting piece comprises a connecting sleeve and a flange fixed to the outer ring of the connecting sleeve, the connecting sleeves extend into the sub-transmission shafts, and the flanges are used for beingin butt joint with the a