Multifunctional workbench for HVAC installation in buildings

The invention provides a multifunctional workbench for HVAC installation in buildings, wherein the multifunctional workbench comprises a base platform, a lifting seat, a rotating table, a clamping component driving unit and a pair of clamping components. The lifting seat is arranged on the base platform. The lifting seat comprises an installation plate and a lifting bracket connected to the lowerend of the installation plate. The lower end of the lifting bracket is arranged inside an accommodating chamber of the base platform. The rotating table is rotatably arranged on the installation plate. The clamping component driving unit is arranged inside the rotating table. The clamping components are correspondingly arranged on the clamping component driving unit. By means of the multifunctional workbench for the HVAC installation in buildings, the technical problems that existing HVAC pipelines can not be lifted and rotated flexibly during installing and welding, fixation of the HVAC pipelines is unstable, the dev