Fabricated precast beam preparation device and preparation method thereof

The invention provides an assembly type precast beam preparation device and a preparation method thereof. The two sides of a bottom plate are connected with side plates, the bottom plate is provided with at least two partition plates, the tops of the two partition plates are connected with a cover plate, the cover plate and the two ends of the bottom plate are connected with end plates to form a precast beam mold, and the bottom plate is connected with the two side plates and the two end plates in a sealed mode. Three sealed cavities are formed in the mold through the two partition plates, a plurality of grouting openings are formed in the cover plate, a grouting opening and an exhaust hole are formed in the position of each sealed cavity, and a plug is arranged on each exhaust hole. The ultra-high performance concrete is used for preparing the shell of the precast beam, and the common concrete is used for filling, so that the problem of high production cost of the ultra-high performance concrete is solved, t