Quantitative feeding device for building construction

The invention relates to the technical field of building construction, and discloses a quantitative feeding device for building construction, which comprises a feeding box, a supporting column is fixedly connected to the bottom surface of the feeding box, a laser distance measuring sensor is fixedly connected to the rear side surface of the inner wall of the feeding box, and a hydraulic rod is fixedly connected to the bottom surface of the inner wall of the feeding box. A hydraulic rod is fixedly connected to the top end of the feeding box, first sliding grooves are formed in the two sides of the feeding box, a feeding frame is fixedly connected to the front side face of the feeding box, and a material receiving plate is fixedly connected to the top end of the hydraulic rod. The stone entering the feeding box is quantified, the laser distance measuring sensor transmits a signal to the hydraulic rod, the hydraulic rod slowly ascends after receiving the signal to drive the material receiving plate to slowly asc