Balance beam for lifting platform truss

The utility model discloses a balance beam for lifting a platform truss. The balance beam comprises a main beam (1), an operation platform (2) and a counter weight rack (3), wherein the operation platform (2) is arranged above the main beam (1); the counter weight rack (3) is suspended on the main beam (1); a lifting ear plate (4) is arranged on the main beam. The balance beam is capable of unilaterally lifting the platform truss; the platform truss is adjusted into a horizontal state by using the main beam and a counter weight and is then lifted; when being lifted, the platform truss is not hindered by a tower member obstruction and can be directly installed to a position of a tower in need of installation, a suspending operation of an installation person in the air is not needed, thus the safety of aloft work is improved and the installation efficiency is improved. By using the method, the lifting is safe and efficient, upper members can be firstly installed when a perfect plan of lower accessories or measu