Broken stone spreader for road construction

The invention relates to a broken stone spreader for road construction, which belongs to the technical field of road construction, and is characterized in that two groups of spreaders are arranged ona walking rack in parallel front and back, and slide left and right along the walking rack by virtue of a matched driving device to form a spreading width adjusting structure; the spreader adopts a material bin separation structure, broken stones uniformly fall to a discharge port of a blanking bin by means of an auger of a material receiving bin, then, under the driving of a rotary material distributing roller, the broken stones are shifted by material shifting plates to be spread to the ground through the discharging port, and the material carrying amount of each time is the volume between the two material shifting plates. The material shifting plates and dust leaking holes communicated with inner holes of the material shifting plates are evenly distributed on the periphery of the rotarymaterial distributing rol