Formwork climbing device for cable-stayed bridge tower construction

The invention relates to the field of bridge building construction, in particular to a climbing formwork device for cable-stayed bridge tower construction. Comprising a vertical climbing rod and an outer wall formwork installed on the vertical climbing rod, a horizontally-arranged gap bridge connecting plate is fixedly connected to the upper end of the outer wall formwork, a strip-shaped through hole is formed in the gap bridge connecting plate, the length direction of the through hole is perpendicular to the outer wall formwork, a sliding block is installed in the through hole in a sliding mode, and the sliding block is fixedly connected with an inner wall formwork. The inner wall formwork is located below the gap bridge connecting plate and is parallel to the outer wall formwork. A sliding block driving mechanism for pushing the sliding block to move in the through hole is fixedly mounted on the upper surface of the gap bridge connecting plate; a limiting sleeve is arranged on the upper surface of the gap b