Modularized supporting unit of steel structure

The utility model provides a steel structure modularized supporting unit which comprises a cubic frame formed by tailor-welding profile steel. Plane connecting plates are respectively arranged on six surfaces of the cubic frame; a dot matrix bolt hole group is formed in the center of each plane connecting plate body; the lattice bolt hole groups are used for connecting any adjacent plane connecting plate bodies of the adjacent steel structure modular supporting units in a multipoint, concentric and fastened matched mode through fastening assemblies. The steel structure supporting device is simple in structure, stable in supporting, safe and reliable, can be used as a standard part for modular combination and use, achieves supporting of steel structure components, particularly meets the requirements of steel structure supporting and general assembly jig frame supporting of various structural forms, and is ideal in universality and suitable for popularization. 提供一种钢结构模块化支撑单元，包括用型钢拼焊而成的立方体框架；立方体框架的六个面分别设有平面连接板；每