High-speed rail box girder internal mold production equipment and construction method

The invention discloses high-speed rail box girder internal formwork production equipment which comprises a platform and a box girder, the box girder is composed of a top formwork and a pair of side formworks, the high-speed rail box girder internal formwork production equipment further comprises a heightening base, a turnover mechanism and two formwork supports, the heightening base is fixedly installed on the platform, the top formwork is fixedly installed on the top of the heightening base, and the turnover mechanism is installed on the top of the heightening base. The side formworks are located on the two sides of the heightening base respectively, supports are fixedly installed on the portions, on the two sides of the heightening base, of the upper portion of the platform, the middles of the side formworks are movably hinged to the tops of the supports in the corresponding positions respectively, and the turnover mechanism is used for driving the side formworks to conduct mold opening and closing actions