All-purpose spanning frame capable of being assembled

The invention, which relates to the technical field of electric power circuit installation, discloses an assembled universal crossing frame comprising a supporting keel and a telescopic shielding net. The supporting keels comprise longitudinal keels and horizontal keels, the longitudinal keels are arranged on the periphery of an obstacle and are perpendicular to the ground, protective pins are arranged at the bottoms of the longitudinal keels, scaffolds are arranged on the longitudinal keels, and horizontal tie bars are arranged between the adjacent longitudinal keels; the horizontal keel is arranged at the top end of the longitudinal keel and connected with the longitudinal keel to form a keel support, a telescopic shielding net used for shielding obstacles is arranged on the horizontal keel, and the supporting keel is fixed to the ground in an auxiliary mode through an auxiliary pull wire; the telescopic shielding net comprises a telescopic net and main stay wires arranged on the periphery of the telescopic