Polyurethane elastic buffer base plate as well as production device and preparation method thereof

The invention discloses a polyurethane elastic buffer base plate and a production device and a preparation method thereof.The polyurethane elastic buffer base plate sequentially comprises a connecting layer, a polyurethane microporous elastic layer, a supporting framework and a protective layer from top to bottom, and the connecting layer is a three-dimensional net-shaped object at least partially embedded in the upper surface of the polyurethane microporous elastic layer; the supporting framework is integrally embedded into the lower surface of the polyurethane microporous elastic layer, and the protective layer is connected to the lower surface of the polyurethane microporous elastic layer. According to the polyurethane elastic buffer base plate, the problem of railway ballast pulverization is solved, the stability of a ballast track is improved, the maintenance frequency is reduced, the railway ballast screening frequency is reduced, the safety and continuity of track operation are improved, and the operat