Trash blocking float device for garbage to automatically pass through dam

The utility model discloses a trash holding float device for trash to automatically pass through a dam, and belongs to the technical field of trash holding floats. Comprising a first supporting rod, a second supporting rod, a driving set and a bearing assembly, the end of the first supporting rod is hinged to the end of the second supporting rod, the second supporting rod is horizontally arranged, the first supporting rod is vertically arranged, the second supporting rod is arranged underwater, and the first supporting rod is connected with a dam body; extending structures are arranged at the ends, away from the hinge, of the first supporting rod and the second supporting rod. By arranging the extension structure, the vertical heights of the first supporting rod and the first extension rod and the horizontal lengths of the second supporting rod and the second extension rod can be changed according to actual working conditions, so that the running direction of the driving set is changed, the moving direction o