Adjustable fixing support for air pipe installation

The invention relates to the technical field of air pipe installation, and particularly discloses an adjustable fixing support for air pipe installation, the adjustable fixing support comprises a support frame, side face adjusting assemblies, hoisting assemblies and pressing assemblies, the whole support frame is of a strip-shaped structure, and the side face adjusting assemblies, the hoisting assemblies and the pressing assemblies are arranged in pairs; each side face adjusting assembly comprises a sleeve, a lower vertical plate and a lower connecting plate, the supporting frame is sleeved with the sleeve, and the two side face adjusting assemblies are located at the two ends of the supporting frame respectively. The lower vertical plate is arranged on the upper side of the sleeve; the lower connecting plate is arranged on the side surface of the lower vertical plate; the hoisting assembly comprises an upper vertical plate, a fixing plate and an upper connecting plate, the fixing plate is arranged at the top