Sand and stone matching system for concrete production

The invention discloses a sand and stone matching system for concrete production. The sand and stone matching system for the concrete production includes a storage bin, a sand and stone mixing deviceand a first conveying machine; the storage bin includes a sand bin and a stone bin; a discharging opening of the storage bin is provided with a first controllable gate; the sand and stone mixing device includes a sand conveying machine, a stone conveying machine, a stone baffle and a sand baffle, wherein the stone baffle is arranged under the sand conveying machine, and the sand baffle is arrangedunder the stone conveying machine; an upwards inclined conveying section is arranged on the terminal of the sand conveying machine, the terminal of the sand conveying machine and the terminal of thestone conveying machine are arranged at the two sides of the first conveying machine respectively and are opposite to each other, and the baffles are used for making sand or stones which falls from the sand conveying machine or