Anti-corrosion steel structure of crane

The anti-corrosion steel structure of the crane comprises a steel mounting sleeve A, an adjusting rod and a fixed bottom plate, a steel mounting sleeve B is fixedly mounted at the top of the fixed bottom plate, an adjusting rotating pin B is fixedly mounted on the surface of one side of the steel mounting sleeve B, an adjusting rotating pin A is fixedly mounted on the surface of one side of the steel mounting sleeve A, and an adjusting rotating pin B is fixedly mounted on the surface of one side of the adjusting rotating pin A; and stable supporting plates are fixedly mounted on the surfaces of the two sides of the steel mounting sleeve A, adjusting rods are fixedly mounted at the bottoms of the stable supporting plates, and hydraulic lifting cylinders are fixedly mounted at the bottoms of the adjusting rods. The adjusting rotating pin B is twisted, loosened and taken out, so that the extension steel rod is in a movable state, the extension steel rod is adjusted according to the height needing to be adjusted,