Aerial track assembly

The utility model provides an air track assembly which comprises an air track assembly, the air track assembly is composed of a plurality of groups of air track mechanisms which are matched with one another, and each group of air track mechanism comprises a long-strip-shaped shell and an air track conveying unit which can adapt to the length of the long-strip-shaped shell through adjustment. The long-strip-shaped shell can be installed below an indoor ceiling through the hoisting assembly, and the aerial track conveying unit is installed in the long-strip-shaped shell. According to the air track assembly provided by the utility model, the air track conveying unit which can be adjusted to adapt to the length of the long-strip-shaped shell is arranged, so that the overall length of the air track assembly can be adjusted, and the air track assembly can be matched with blood collection tube conveying lines with different lengths; and meanwhile, the arranged long-strip-shaped shell can be installed below an indoor