Vertical axis straight blade lifting wind wheel with speed-limiting device

The invention discloses a speed-limiting device for a lifting vertical axis wind wheel, which comprises a wind wheel shaft and two or more than two lifting blades arranged on the wind wheel shaft; and a set of speed-limiting device is also arranged on the top of the wind wheel shaft. A damping blade in the speed-limiting device can deviate under the action of centrifugal force and generate the damping action to restrain the rotate speed of the wind wheel from increasing. When the rotate speed is higher, the deflection of the damping blade is larger and the generated damping moment is larger, so the rotate speed is restrained effectively from increasing at a high wind speed, so that the wind wheel continues running with high efficiency and at the high wind speed, the overload running of the wind wheel is protected, and the advantage that the vertical axis wind wheel can run at the wide wind speed is shown in a real sense.