Installation device of fresh air system pipeline

The utility model belongs to the technical field of pipeline installation, and particularly relates to a fresh air system pipeline installation device which comprises a hoisting plate, a hoisting circular plate is fixed to the center of the bottom face of the hoisting plate, a circular ring groove is formed in the upper portion of the outer wall of the hoisting circular plate, a hoisting assembly is arranged below the hoisting plate, and the hoisting assembly comprises a threaded sleeve. A sleeve circular plate is fixed to one end of the threaded sleeve, and a hoisting circular groove is formed in the top face of the sleeve circular plate. The degree of the hoisting lead screw penetrating into the threaded sleeve can be adjusted through the spiral threaded sleeve, then the relative length of the threaded sleeve and the hoisting lead screw assembly is adjusted, and the first hoop semi-ring and the second hoop semi-ring serve as main structures for hoisting and fixing a pipeline and are installed at one end of