With the advantage of taking materials in two-way, it largely saves the space at the line side. The AGV can tow a group of H-Frames from 1 to 4, which enables the synchronized steering of H-Frame with AGV. This actuator can realize the automation of materials taking, delivering and loading with the automatic line-feeding system. The whole process is automatic, flexible and convenient, not restricted by the space. It is a cutting-edge technology of in-house logistics.