Mining supporting device

The utility model discloses a mining supporting device, which belongs to the technical field of mine supporting structures and comprises a vertically arranged supporting rod, a top beam is horizontally and fixedly connected to the top end of the supporting rod, a longitudinal beam is fixedly connected to the outer surface of the top beam, a plurality of threaded holes are vertically formed in the longitudinal beam in a penetrating manner, and threaded rods are arranged at the threaded holes in a threaded fit manner. The bottom ends of the multiple threaded rods are coaxially and fixedly connected with worm wheels, the same sides of the multiple worm wheels are provided with worms, the worms are meshed with the worm wheels, the same sides of the multiple threaded rods are further provided with rotating rods, the rotating rods are coaxially and fixedly connected with the multiple worms, and the inner side of the supporting rod is further provided with a storage guiding assembly. Through the arrangement, the mul