Steel jacket box with size-controllable bearing platform

The utility model discloses a bearing platform size controllable type steel cover box which comprises a bearing platform, the upper end of the bearing platform is provided with a steel cover box formed by a positioning section, a cover box section and a cover box corner in a surrounding mode, an interlayer is arranged in the positioning section, the cover box section and the cover box corner, and the middle of the interlayer is connected with a connecting structure in a sleeved mode. According to the steel jacket box with the size-controllable bearing platform, the positioning sections, the jacket box sections and the jacket box corners are mounted above the bearing platform, and the independent jacket box sections are assembled in the middles of the positioning sections and the jacket box corners, so that the steel jacket box on the bearing platform can be conveniently assembled, the size of the steel jacket box can be conveniently adapted, and the uniformity in the using process can be conveniently guarante