Support erecting device for building construction

The utility model discloses a support erecting device for building construction, which comprises an auxiliary device arranged on the outer side of the middle end of a main body frame and comprising a main support, an auxiliary support and an auxiliary support. The lifting device comprises a lifting frame, the lifting frame is arranged in the main body frame in a sliding mode, an electric sliding table is arranged on the lifting frame in a sliding mode, a rotating table is arranged on the electric sliding table in a rotating mode, a base plate is fixedly arranged on the rotating table, and a clamping device is fixedly arranged on the base plate; the clamping device slides and rotates on the ascending frame and is used for clamping a steel pipe needed for building a support and assisting in building construction of the support, and the clamping device moves and rotates the steel pipe to the angle meeting the requirement for building construction of the support. The technical problem that in the prior art, the w