Electromechanical pipeline upside-down lifting device suitable for square hole

The utility model discloses an electromechanical pipeline upside-down lifting device suitable for a square hole, which relates to the technical field of electromechanical installation and comprises a lifting assembly, a winch is arranged on one side of the lifting assembly, a balance beam is hoisted on a cable on the winch through a pulley, and an electromechanical pipeline is hoisted on the lower side of the balance beam through a steel cable hook. The lifting assembly comprises a left supporting frame and a right supporting frame, two supporting cross beams are arranged on the upper sides of the two supporting frames, pulley assemblies are arranged on the upper sides of the two supporting cross beams, U-shaped embracing clamps are arranged on the right sides of the two supporting cross beams, the two supporting frames comprise square steel, and steel plates are welded to the lower sides of the square steel. The two sets of supporting cross beams are of square steel structures, the two sets of supporting cro