The folding arm crane assists the manipulator to load the intelligent balancer. The intelligent balancer is also called the intelligent hoist. It is used for lifting and handling materials. The assisting manipulator can complete the three-dimensional space transfer action such as heavy object grabbing, handling, flipping, docking, and fine-tuning the angle. It provides an ideal assistance handling and assembly tool for material on-line and production parts assembly. The power-assisted manipulator not only reduces the labor intensity of the operation and provides safe material handling, but also provides system solutions for special environments such as explosion-proof workshops and dangerous places where personnel cannot enter.