Beam body connecting device for widening bridge

The invention relates to the technical field of bridge widening, and discloses a beam body connecting device for bridge widening, which comprises a track structure arranged along the width direction of the existing beam body, a hanging bracket structure arranged on the track structure, and a guniting structure arranged on the hanging bracket structure, the hanging bracket structure comprises a telescopic frame in sliding connection with the interior of the fixed table, and a hanging hook matched with a to-be-spliced beam body is arranged at the end, close to the to-be-spliced beam body, of the telescopic frame. The guniting structure comprises a moving table which is erected on the telescopic frame and can move along the telescopic frame; a conveying pipeline is arranged on the moving table and comprises a horizontal telescopic section and a vertical telescopic section which are sequentially connected from top to bottom, and an electric push rod for driving the vertical telescopic section to vertically stretc