This invention discloses a heavy-duty
robotic arm with a rotating gripper, comprising a support frame, a longitudinal transfer frame, a longitudinal transfer frame drive mechanism, a transverse transfer frame, a transverse transfer frame drive mechanism, a
vertical transfer frame, a
vertical transfer frame drive mechanism, a rotating base, a rotating drive mechanism, a gripper
assembly, and a balance cylinder. The support frame is raised off the ground, with a passageway below it. The upper and lower parts of the rotating base are respectively a fixed part and a rotating part. The fixed part is connected to the lower end of the
vertical transfer frame by planar distributed springs, and the gripper
assembly is located at the lower end of the rotating part. A lifting hook is hinged to the lower end of the balance cylinder, and the lifting hook supports the ground hook on the lower side of the edge of the rotating part, with the two in rolling contact. The gripper
assembly, rotating base, and vertical transfer frame are supported on the transverse transfer frame by the balance cylinder. The balance cylinder has an accumulator; when the rotating part descends, the accumulator provides resistance, and when the rotating part rises, the accumulator provides assistance. This invention is adaptable to materials coming from all directions, facilitates the gripping of heavy parts, facilitates stacking, has high operating efficiency, and significantly reduces equipment and operating costs, making it suitable for widespread use.