Cable-stayed bridge steel cable tensioning device convenient to disassemble and assemble

The utility model belongs to the technical field of bridge steel cable tensioning, and particularly relates to a cable-stayed bridge steel cable tensioning device convenient to disassemble and assemble, which comprises a supporting leg and a fixing mechanism, the fixing mechanism is slidably arranged in the supporting leg, and a supporting plate, a sliding column, a connecting column I and a connecting column II are arranged in the fixing mechanism. The supporting plates are symmetrically arranged at the two ends of the steel pull rod, the sliding columns are symmetrically arranged on the supporting plates, the connecting columns I are arranged at one ends of the sliding columns, the connecting columns I and the connecting columns II are connected in a sliding mode, the connecting columns II move to drive the connecting columns I to move, then the sliding columns are driven to move to be close to the steel pull rod, and the connecting position of the steel pull rod is limited. The tensioning device can be tra