Gravel stock bin discharging equipment of concrete mixing plant

The utility model discloses a concrete mixing plant sandstone stock bin blanking device which comprises a sandstone stock bin barrel, a first supporting frame is fixedly connected to the side wall of the sandstone stock bin barrel, a discharging port is fixedly connected to the bottom end of the sandstone stock bin barrel, a driving motor is fixedly connected to the side wall of the discharging port, and a second supporting frame is fixedly connected to the side wall of the driving motor. A second supporting frame is arranged at the bottom end of the discharging port, and a belt conveying wheel is rotationally connected to the inner side wall of the second supporting frame. The driving motor, the transverse rod, the fixing ring and the drill rod are arranged, the transverse rod penetrates through the interior of the discharging port and can limit lateral displacement of the transverse rod, the transverse rod, the fixing ring and the drill rod are all made of steel and have good toughness and abrasion resistan