Grid rudder folding and unfolding device and carrier rocket

The invention provides a grid rudder folding and unfolding device and a carrier rocket, and relates to the technical field of flying device flight attitude control, the grid rudder folding and unfolding device comprises a rudder shaft assembly, a folding and unfolding mechanism and a swing mechanism, one end of the rudder shaft assembly is hinged to a grid rudder through a first hinge shaft, and the other end of the rudder shaft assembly is connected with a rocket body; one end of the folding and unfolding mechanism is connected with the rudder shaft assembly, the other end of the folding and unfolding mechanism is hinged to the grid rudder through a second hinge shaft, the first hinge shaft and the second hinge shaft are arranged in parallel and at an interval, and the folding and unfolding mechanism drives the grid rudder to fold/unfold around the first hinge shaft and the second hinge shaft relative to the rocket body; the swinging mechanism is arranged on the rocket body, and the driving end of the swingi