Metal turnover box folding mechanism with spring box

A metal turnover box folding mechanism with a spring box is characterized by comprising stand column legs, cornerites, the spring box, a cover plate and keys. The cornerites are in a U shape, and are provided with long holes and key grooves. A square space is defined by welding the cornerites and the cover plate, the stand column legs are installed inside the square space, and the keys are welded on the stand column legs. The spring box is welded inside the stand column legs, and a part of the spring box is located outside the stand column legs. The metal turnover box folding mechanism with the spring box has the advantages of being reliable in folding performance, high in technical content, safe, reliable, convenient to operate and low in cost.