Pull rod assembly for high-load-bearing luggage case

The utility model relates to the technical field of luggage case assemblies, and discloses a pull rod assembly for a high-load-bearing luggage case, which comprises an outer rod, the inner wall of the outer rod is connected with an inner rod in a sliding manner, one side of the outer rod is provided with a clamping groove, the inner wall of the clamping groove is connected with a sliding block in a sliding manner, one end of the sliding block is fixedly connected with a connecting rod, and the other end of the sliding block is fixedly connected with the connecting rod. A torsional spring is fixedly connected to the joint of the sliding block and one side of the connecting rod, the top end of the connecting rod is fixedly connected to the bottom end of a supporting frame, a spring is fixedly connected to the top end of the supporting frame, and the top end of the spring is fixedly connected to the top end of the interior of a spring frame. According to the utility model, the button is pressed to drive the cros