| 摘要 |
The present invention provides a connecting device for connecting a hub (104) and a main shaft (112) of a wind turbine (100). The connecting device comprises at least one sensor bolt (201) connecting the hub (104) and the main shaft (112), wherein a stress detection element (203) is mounted inside the sensor bolt (201). The stress detection element (203) is adapted to detect a length variation of the sensor bolt (201) and to output a sensor signal indicative of the length variation of the sensor bolt (201). A signal output device is used for outputting the sensor signal which is indicative of a stress applied to the sensor bolt (201). |
