One-way pig driving fence door

The utility model discloses a one-way pig driving fence door, and relates to the technical field of pig driving fence doors, stand columns and handrails, a rotating plate is connected between the two stand columns through a rotating shaft, one side of each stand column is provided with a limiting block, the handrails are installed on the sides, away from the rotating plate, of the stand columns, and movable springs are installed in the stand columns through grooves. And one end of the movable spring is connected with an ejector rod. When the one-way pig driving fence door is used, a movable ring can be pushed to drive a connecting rod to extrude a wedge-shaped block, then the wedge-shaped block drives a clamping rod and a clamping block to move through an ejector rod, at the moment, one end of a handrail can be connected into a groove of a stand column in a butt joint mode, and after the movable ring is loosened, the ejector rod is reset through a movable spring; and then the clamping rod and the clamping blo