Stationary pollution source sampling encircling type fixing frame

The utility model discloses an encircling type fixed frame for sampling a stationary pollution source. The utility model aims to solve the problems that stationary pollution source detection is completed by using an insertion type flue gas tester, a sampling pipe of the tester needs to be inserted into a chimney or a detection opening of an exhaust funnel during detection, a detector needs to lift the device by hand all the time for continuous sampling, and the detection time is as long as several hours; and detection personnel are too tired. The clamp comprises an H-shaped connecting plate (3), two clamping arms (1), a movable plate (4), a screw (5), a U-shaped clamping rod (6) and two connecting rods (2), one ends of the two clamping arms are hinged to the H-shaped connecting plate, the movable plate and the H-shaped connecting plate are arranged in parallel, the end of the movable plate is hinged to one ends of the connecting rods, and the other ends of the connecting rods are hinged to the clamping arms.