Multi-environment anti-deformation detection device for steel structure

The utility model discloses a multi-environment anti-deformation detection device for a steel structure, which is characterized in that an arched frame is fixedly assembled at the upper end of a waste water collecting box, extremely cold environment changing structures are fixedly assembled on the front and rear side walls of the arched frame, and an acid rain environment changing structure is assembled on the arched frame; extremely hot environment changing structures are uniformly inserted into the upper surface of the arched frame, the output end of a hydraulic cylinder on the upper surface of the arched frame penetrates through the arched frame and is fixedly assembled with an extrusion head, and port shielding structures are assembled at the left and right ends of the arched frame; a condensation pipe in the prior art is replaced by the extremely cold environment change structure, the extremely cold environment change structure can exactly achieve the refrigeration effect, and the simulation requirement