Air volume measuring device for mining large fan

The utility model discloses an air volume measuring device for a mining large fan. The measuring device comprises a thermosensitive wind speed sensor, a sensor fixing hoop, a steel wire rope, a measuring point section positioning disc, a steel wire rope disc and a steel wire rope fixing mechanism, the measuring point section positioning disc is arranged at the center of an air inlet or an air outlet of an air duct and is of a hollow circular ring structure, a plurality of semicircular rings are evenly distributed on the periphery of the outer portion of the circular ring, the thermosensitive air speed sensors are evenly distributed on the steel wire rope, and one end of the steel wire rope is fixedly connected to the semicircular rings of the measuring point section positioning disc. And the other end of the steel wire rope is wound in the steel wire rope disc and is tensioned and fixed through a steel wire rope fixing mechanism which is arranged at the edge of the fan shell. According to the scheme, on one h