Fecha de publicación: 19/03/2024 Fuente: WIPO "circular economy" The utility model discloses a concrete production quantitative material injection device, a support mechanism comprises support legs, the top ends of the support legs are fixedly connected with a material storage tank, one side of the material storage tank is fixedly connected with a support frame I, the top of the support frame I is fixedly connected with a motor I, and the motor I is fixedly connected with a motor II. A second supporting frame is fixedly connected to the side, away from the first supporting frame, of the material storage tank, a second motor is fixedly connected to the top of the second supporting frame, first device boxes are symmetrically and fixedly connected to the inner wall of the material storage tank, and a second device box is fixedly connected to the position, below the first device boxes, of the material storage tank; according to the utility model, the volume of the storage tank can be changed by arranging the quantifying plate I, the quantifying plate II and the measuring line so as to obtain a more accurate raw material volume, so that the quality of concrete manufactured every time can be accurately kept consistent when the concrete is manufactured, and the concrete with different qualities cannot be generated; and the production quality is improved while the working efficiency is improved.