Lateral entry type parapet wall roof drain assembly for transformer substation steel structure drainage construction

The utility model relates to the technical field of transformer substation building structures, in particular to a transformer substation steel structure drainage construction side entry type parapet wall roof drain assembly which comprises a roof drain, a sleeve is arranged in the roof drain, the shape of the sleeve is the same as that of the roof drain, and the sleeve is arranged in a sliding mode relative to the inner wall of the roof drain. And a smaller gap is formed between the two clamping blocks and is used for clamping the waterproof coiled material. When the structure is adopted, the waterproof coiled material extends into the roof drain, the waterproof coiled material is pressed into the roof drain through the sleeve, the waterproof coiled material can cover the connecting position of the roof drain and the wall, namely the water inlet position of the roof drain, water leakage at the water inlet position is avoided, the waterproof coiled material can be clamped through the sleeve and the roof drain