Pig blocking door mounting structure

The utility model discloses a pig blocking door installation structure which comprises a first stand column, a second stand column, a pig blocking door, a hinge structure and a first vertical limiting structure. The second stand column is arranged on one side of the first stand column in parallel. The pig blocking door is arranged between the two first stand columns and the two second stand columns. The hinge structure is used for connecting the pig blocking door and the first stand column to achieve rotary connection, the hinge structure is provided with a first U-shaped buckle, the first U-shaped buckle is matched with the first stand column, and connection between the hinge structure and the first stand column is achieved through matching of the first U-shaped buckle and the first stand column. The first vertical limiting structure is arranged between the first U-shaped buckle and the first stand column and used for preventing the hinge structure from sliding up and down along the first stand column. Accor